vendor: check in vendors

Bye bye glide...

40 files changed, 4769 insertions, 0 deletions

diff --git a/vendor/github.com/smartystreets/assertions/LICENSE.md b/vendor/github.com/smartystreets/assertions/LICENSE.md
new file mode 100644
index 00000000..48a3731c
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/LICENSE.md
@@ -0,0 +1,23 @@
+Copyright (c) 2015 SmartyStreets, LLC
+
+Permission is hereby granted, free of charge, to any person obtaining a copy 
+of this software and associated documentation files (the "Software"), to deal 
+in the Software without restriction, including without limitation the rights 
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
+copies of the Software, and to permit persons to whom the Software is 
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all 
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+SOFTWARE.
+
+NOTE: Various optional and subordinate components carry their own licensing
+requirements and restrictions.  Use of those components is subject to the terms
+and conditions outlined the respective license of each component.
diff --git a/vendor/github.com/smartystreets/assertions/README.md b/vendor/github.com/smartystreets/assertions/README.md
new file mode 100644
index 00000000..58383bb0
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/README.md
@@ -0,0 +1,575 @@
+# assertions
+--
+    import "github.com/smartystreets/assertions"
+
+Package assertions contains the implementations for all assertions which are
+referenced in goconvey's `convey` package
+(github.com/smartystreets/goconvey/convey) and gunit
+(github.com/smartystreets/gunit) for use with the So(...) method. They can also
+be used in traditional Go test functions and even in applications.
+
+Many of the assertions lean heavily on work done by Aaron Jacobs in his
+excellent oglematchers library. (https://github.com/jacobsa/oglematchers) The
+ShouldResemble assertion leans heavily on work done by Daniel Jacques in his
+very helpful go-render library. (https://github.com/luci/go-render)
+
+## Usage
+
+#### func  GoConveyMode
+
+```go
+func GoConveyMode(yes bool)
+```
+GoConveyMode provides control over JSON serialization of failures. When using
+the assertions in this package from the convey package JSON results are very
+helpful and can be rendered in a DIFF view. In that case, this function will be
+called with a true value to enable the JSON serialization. By default, the
+assertions in this package will not serializer a JSON result, making standalone
+ussage more convenient.
+
+#### func  ShouldAlmostEqual
+
+```go
+func ShouldAlmostEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldAlmostEqual makes sure that two parameters are close enough to being
+equal. The acceptable delta may be specified with a third argument, or a very
+small default delta will be used.
+
+#### func  ShouldBeBetween
+
+```go
+func ShouldBeBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldBeBetween receives exactly three parameters: an actual value, a lower
+bound, and an upper bound. It ensures that the actual value is between both
+bounds (but not equal to either of them).
+
+#### func  ShouldBeBetweenOrEqual
+
+```go
+func ShouldBeBetweenOrEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldBeBetweenOrEqual receives exactly three parameters: an actual value, a
+lower bound, and an upper bound. It ensures that the actual value is between
+both bounds or equal to one of them.
+
+#### func  ShouldBeBlank
+
+```go
+func ShouldBeBlank(actual interface{}, expected ...interface{}) string
+```
+ShouldBeBlank receives exactly 1 string parameter and ensures that it is equal
+to "".
+
+#### func  ShouldBeChronological
+
+```go
+func ShouldBeChronological(actual interface{}, expected ...interface{}) string
+```
+ShouldBeChronological receives a []time.Time slice and asserts that the are in
+chronological order starting with the first time.Time as the earliest.
+
+#### func  ShouldBeEmpty
+
+```go
+func ShouldBeEmpty(actual interface{}, expected ...interface{}) string
+```
+ShouldBeEmpty receives a single parameter (actual) and determines whether or not
+calling len(actual) would return `0`. It obeys the rules specified by the len
+function for determining length: http://golang.org/pkg/builtin/#len
+
+#### func  ShouldBeFalse
+
+```go
+func ShouldBeFalse(actual interface{}, expected ...interface{}) string
+```
+ShouldBeFalse receives a single parameter and ensures that it is false.
+
+#### func  ShouldBeGreaterThan
+
+```go
+func ShouldBeGreaterThan(actual interface{}, expected ...interface{}) string
+```
+ShouldBeGreaterThan receives exactly two parameters and ensures that the first
+is greater than the second.
+
+#### func  ShouldBeGreaterThanOrEqualTo
+
+```go
+func ShouldBeGreaterThanOrEqualTo(actual interface{}, expected ...interface{}) string
+```
+ShouldBeGreaterThanOrEqualTo receives exactly two parameters and ensures that
+the first is greater than or equal to the second.
+
+#### func  ShouldBeIn
+
+```go
+func ShouldBeIn(actual interface{}, expected ...interface{}) string
+```
+ShouldBeIn receives at least 2 parameters. The first is a proposed member of the
+collection that is passed in either as the second parameter, or of the
+collection that is comprised of all the remaining parameters. This assertion
+ensures that the proposed member is in the collection (using ShouldEqual).
+
+#### func  ShouldBeLessThan
+
+```go
+func ShouldBeLessThan(actual interface{}, expected ...interface{}) string
+```
+ShouldBeLessThan receives exactly two parameters and ensures that the first is
+less than the second.
+
+#### func  ShouldBeLessThanOrEqualTo
+
+```go
+func ShouldBeLessThanOrEqualTo(actual interface{}, expected ...interface{}) string
+```
+ShouldBeLessThan receives exactly two parameters and ensures that the first is
+less than or equal to the second.
+
+#### func  ShouldBeNil
+
+```go
+func ShouldBeNil(actual interface{}, expected ...interface{}) string
+```
+ShouldBeNil receives a single parameter and ensures that it is nil.
+
+#### func  ShouldBeTrue
+
+```go
+func ShouldBeTrue(actual interface{}, expected ...interface{}) string
+```
+ShouldBeTrue receives a single parameter and ensures that it is true.
+
+#### func  ShouldBeZeroValue
+
+```go
+func ShouldBeZeroValue(actual interface{}, expected ...interface{}) string
+```
+ShouldBeZeroValue receives a single parameter and ensures that it is the Go
+equivalent of the default value, or "zero" value.
+
+#### func  ShouldContain
+
+```go
+func ShouldContain(actual interface{}, expected ...interface{}) string
+```
+ShouldContain receives exactly two parameters. The first is a slice and the
+second is a proposed member. Membership is determined using ShouldEqual.
+
+#### func  ShouldContainKey
+
+```go
+func ShouldContainKey(actual interface{}, expected ...interface{}) string
+```
+ShouldContainKey receives exactly two parameters. The first is a map and the
+second is a proposed key. Keys are compared with a simple '=='.
+
+#### func  ShouldContainSubstring
+
+```go
+func ShouldContainSubstring(actual interface{}, expected ...interface{}) string
+```
+ShouldContainSubstring receives exactly 2 string parameters and ensures that the
+first contains the second as a substring.
+
+#### func  ShouldEndWith
+
+```go
+func ShouldEndWith(actual interface{}, expected ...interface{}) string
+```
+ShouldEndWith receives exactly 2 string parameters and ensures that the first
+ends with the second.
+
+#### func  ShouldEqual
+
+```go
+func ShouldEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldEqual receives exactly two parameters and does an equality check.
+
+#### func  ShouldEqualTrimSpace
+
+```go
+func ShouldEqualTrimSpace(actual interface{}, expected ...interface{}) string
+```
+ShouldEqualTrimSpace receives exactly 2 string parameters and ensures that the
+first is equal to the second after removing all leading and trailing whitespace
+using strings.TrimSpace(first).
+
+#### func  ShouldEqualWithout
+
+```go
+func ShouldEqualWithout(actual interface{}, expected ...interface{}) string
+```
+ShouldEqualWithout receives exactly 3 string parameters and ensures that the
+first is equal to the second after removing all instances of the third from the
+first using strings.Replace(first, third, "", -1).
+
+#### func  ShouldHappenAfter
+
+```go
+func ShouldHappenAfter(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenAfter receives exactly 2 time.Time arguments and asserts that the
+first happens after the second.
+
+#### func  ShouldHappenBefore
+
+```go
+func ShouldHappenBefore(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenBefore receives exactly 2 time.Time arguments and asserts that the
+first happens before the second.
+
+#### func  ShouldHappenBetween
+
+```go
+func ShouldHappenBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenBetween receives exactly 3 time.Time arguments and asserts that the
+first happens between (not on) the second and third.
+
+#### func  ShouldHappenOnOrAfter
+
+```go
+func ShouldHappenOnOrAfter(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenOnOrAfter receives exactly 2 time.Time arguments and asserts that
+the first happens on or after the second.
+
+#### func  ShouldHappenOnOrBefore
+
+```go
+func ShouldHappenOnOrBefore(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenOnOrBefore receives exactly 2 time.Time arguments and asserts that
+the first happens on or before the second.
+
+#### func  ShouldHappenOnOrBetween
+
+```go
+func ShouldHappenOnOrBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenOnOrBetween receives exactly 3 time.Time arguments and asserts that
+the first happens between or on the second and third.
+
+#### func  ShouldHappenWithin
+
+```go
+func ShouldHappenWithin(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenWithin receives a time.Time, a time.Duration, and a time.Time (3
+arguments) and asserts that the first time.Time happens within or on the
+duration specified relative to the other time.Time.
+
+#### func  ShouldHaveLength
+
+```go
+func ShouldHaveLength(actual interface{}, expected ...interface{}) string
+```
+ShouldHaveLength receives 2 parameters. The first is a collection to check the
+length of, the second being the expected length. It obeys the rules specified by
+the len function for determining length: http://golang.org/pkg/builtin/#len
+
+#### func  ShouldHaveSameTypeAs
+
+```go
+func ShouldHaveSameTypeAs(actual interface{}, expected ...interface{}) string
+```
+ShouldHaveSameTypeAs receives exactly two parameters and compares their
+underlying types for equality.
+
+#### func  ShouldImplement
+
+```go
+func ShouldImplement(actual interface{}, expectedList ...interface{}) string
+```
+ShouldImplement receives exactly two parameters and ensures that the first
+implements the interface type of the second.
+
+#### func  ShouldNotAlmostEqual
+
+```go
+func ShouldNotAlmostEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldNotAlmostEqual is the inverse of ShouldAlmostEqual
+
+#### func  ShouldNotBeBetween
+
+```go
+func ShouldNotBeBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeBetween receives exactly three parameters: an actual value, a lower
+bound, and an upper bound. It ensures that the actual value is NOT between both
+bounds.
+
+#### func  ShouldNotBeBetweenOrEqual
+
+```go
+func ShouldNotBeBetweenOrEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeBetweenOrEqual receives exactly three parameters: an actual value, a
+lower bound, and an upper bound. It ensures that the actual value is nopt
+between the bounds nor equal to either of them.
+
+#### func  ShouldNotBeBlank
+
+```go
+func ShouldNotBeBlank(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeBlank receives exactly 1 string parameter and ensures that it is
+equal to "".
+
+#### func  ShouldNotBeEmpty
+
+```go
+func ShouldNotBeEmpty(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeEmpty receives a single parameter (actual) and determines whether or
+not calling len(actual) would return a value greater than zero. It obeys the
+rules specified by the `len` function for determining length:
+http://golang.org/pkg/builtin/#len
+
+#### func  ShouldNotBeIn
+
+```go
+func ShouldNotBeIn(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeIn receives at least 2 parameters. The first is a proposed member of
+the collection that is passed in either as the second parameter, or of the
+collection that is comprised of all the remaining parameters. This assertion
+ensures that the proposed member is NOT in the collection (using ShouldEqual).
+
+#### func  ShouldNotBeNil
+
+```go
+func ShouldNotBeNil(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeNil receives a single parameter and ensures that it is not nil.
+
+#### func  ShouldNotContain
+
+```go
+func ShouldNotContain(actual interface{}, expected ...interface{}) string
+```
+ShouldNotContain receives exactly two parameters. The first is a slice and the
+second is a proposed member. Membership is determinied using ShouldEqual.
+
+#### func  ShouldNotContainKey
+
+```go
+func ShouldNotContainKey(actual interface{}, expected ...interface{}) string
+```
+ShouldNotContainKey receives exactly two parameters. The first is a map and the
+second is a proposed absent key. Keys are compared with a simple '=='.
+
+#### func  ShouldNotContainSubstring
+
+```go
+func ShouldNotContainSubstring(actual interface{}, expected ...interface{}) string
+```
+ShouldNotContainSubstring receives exactly 2 string parameters and ensures that
+the first does NOT contain the second as a substring.
+
+#### func  ShouldNotEndWith
+
+```go
+func ShouldNotEndWith(actual interface{}, expected ...interface{}) string
+```
+ShouldEndWith receives exactly 2 string parameters and ensures that the first
+does not end with the second.
+
+#### func  ShouldNotEqual
+
+```go
+func ShouldNotEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldNotEqual receives exactly two parameters and does an inequality check.
+
+#### func  ShouldNotHappenOnOrBetween
+
+```go
+func ShouldNotHappenOnOrBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldNotHappenOnOrBetween receives exactly 3 time.Time arguments and asserts
+that the first does NOT happen between or on the second or third.
+
+#### func  ShouldNotHappenWithin
+
+```go
+func ShouldNotHappenWithin(actual interface{}, expected ...interface{}) string
+```
+ShouldNotHappenWithin receives a time.Time, a time.Duration, and a time.Time (3
+arguments) and asserts that the first time.Time does NOT happen within or on the
+duration specified relative to the other time.Time.
+
+#### func  ShouldNotHaveSameTypeAs
+
+```go
+func ShouldNotHaveSameTypeAs(actual interface{}, expected ...interface{}) string
+```
+ShouldNotHaveSameTypeAs receives exactly two parameters and compares their
+underlying types for inequality.
+
+#### func  ShouldNotImplement
+
+```go
+func ShouldNotImplement(actual interface{}, expectedList ...interface{}) string
+```
+ShouldNotImplement receives exactly two parameters and ensures that the first
+does NOT implement the interface type of the second.
+
+#### func  ShouldNotPanic
+
+```go
+func ShouldNotPanic(actual interface{}, expected ...interface{}) (message string)
+```
+ShouldNotPanic receives a void, niladic function and expects to execute the
+function without any panic.
+
+#### func  ShouldNotPanicWith
+
+```go
+func ShouldNotPanicWith(actual interface{}, expected ...interface{}) (message string)
+```
+ShouldNotPanicWith receives a void, niladic function and expects to recover a
+panic whose content differs from the second argument.
+
+#### func  ShouldNotPointTo
+
+```go
+func ShouldNotPointTo(actual interface{}, expected ...interface{}) string
+```
+ShouldNotPointTo receives exactly two parameters and checks to see that they
+point to different addresess.
+
+#### func  ShouldNotResemble
+
+```go
+func ShouldNotResemble(actual interface{}, expected ...interface{}) string
+```
+ShouldNotResemble receives exactly two parameters and does an inverse deep equal
+check (see reflect.DeepEqual)
+
+#### func  ShouldNotStartWith
+
+```go
+func ShouldNotStartWith(actual interface{}, expected ...interface{}) string
+```
+ShouldNotStartWith receives exactly 2 string parameters and ensures that the
+first does not start with the second.
+
+#### func  ShouldPanic
+
+```go
+func ShouldPanic(actual interface{}, expected ...interface{}) (message string)
+```
+ShouldPanic receives a void, niladic function and expects to recover a panic.
+
+#### func  ShouldPanicWith
+
+```go
+func ShouldPanicWith(actual interface{}, expected ...interface{}) (message string)
+```
+ShouldPanicWith receives a void, niladic function and expects to recover a panic
+with the second argument as the content.
+
+#### func  ShouldPointTo
+
+```go
+func ShouldPointTo(actual interface{}, expected ...interface{}) string
+```
+ShouldPointTo receives exactly two parameters and checks to see that they point
+to the same address.
+
+#### func  ShouldResemble
+
+```go
+func ShouldResemble(actual interface{}, expected ...interface{}) string
+```
+ShouldResemble receives exactly two parameters and does a deep equal check (see
+reflect.DeepEqual)
+
+#### func  ShouldStartWith
+
+```go
+func ShouldStartWith(actual interface{}, expected ...interface{}) string
+```
+ShouldStartWith receives exactly 2 string parameters and ensures that the first
+starts with the second.
+
+#### func  So
+
+```go
+func So(actual interface{}, assert assertion, expected ...interface{}) (bool, string)
+```
+So is a convenience function (as opposed to an inconvenience function?) for
+running assertions on arbitrary arguments in any context, be it for testing or
+even application logging. It allows you to perform assertion-like behavior (and
+get nicely formatted messages detailing discrepancies) but without the program
+blowing up or panicking. All that is required is to import this package and call
+`So` with one of the assertions exported by this package as the second
+parameter. The first return parameter is a boolean indicating if the assertion
+was true. The second return parameter is the well-formatted message showing why
+an assertion was incorrect, or blank if the assertion was correct.
+
+Example:
+
+    if ok, message := So(x, ShouldBeGreaterThan, y); !ok {
+         log.Println(message)
+    }
+
+#### type Assertion
+
+```go
+type Assertion struct {
+}
+```
+
+
+#### func  New
+
+```go
+func New(t testingT) *Assertion
+```
+New swallows the *testing.T struct and prints failed assertions using t.Error.
+Example: assertions.New(t).So(1, should.Equal, 1)
+
+#### func (*Assertion) Failed
+
+```go
+func (this *Assertion) Failed() bool
+```
+Failed reports whether any calls to So (on this Assertion instance) have failed.
+
+#### func (*Assertion) So
+
+```go
+func (this *Assertion) So(actual interface{}, assert assertion, expected ...interface{}) bool
+```
+So calls the standalone So function and additionally, calls t.Error in failure
+scenarios.
+
+#### type FailureView
+
+```go
+type FailureView struct {
+	Message  string `json:"Message"`
+	Expected string `json:"Expected"`
+	Actual   string `json:"Actual"`
+}
+```
+
+This struct is also declared in
+github.com/smartystreets/goconvey/convey/reporting. The json struct tags should
+be equal in both declarations.
+
+#### type Serializer
+
+```go
+type Serializer interface {
+	// contains filtered or unexported methods
+}
+```
diff --git a/vendor/github.com/smartystreets/assertions/assertions.goconvey b/vendor/github.com/smartystreets/assertions/assertions.goconvey
new file mode 100644
index 00000000..e76cf275
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/assertions.goconvey
@@ -0,0 +1,3 @@
+#ignore
+-timeout=1s
+-coverpkg=github.com/smartystreets/assertions,github.com/smartystreets/assertions/internal/oglematchers
\ No newline at end of file
diff --git a/vendor/github.com/smartystreets/assertions/collections.go b/vendor/github.com/smartystreets/assertions/collections.go
new file mode 100644
index 00000000..d7f407e9
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/collections.go
@@ -0,0 +1,244 @@
+package assertions
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/smartystreets/assertions/internal/oglematchers"
+)
+
+// ShouldContain receives exactly two parameters. The first is a slice and the
+// second is a proposed member. Membership is determined using ShouldEqual.
+func ShouldContain(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	if matchError := oglematchers.Contains(expected[0]).Matches(actual); matchError != nil {
+		typeName := reflect.TypeOf(actual)
+
+		if fmt.Sprintf("%v", matchError) == "which is not a slice or array" {
+			return fmt.Sprintf(shouldHaveBeenAValidCollection, typeName)
+		}
+		return fmt.Sprintf(shouldHaveContained, typeName, expected[0])
+	}
+	return success
+}
+
+// ShouldNotContain receives exactly two parameters. The first is a slice and the
+// second is a proposed member. Membership is determinied using ShouldEqual.
+func ShouldNotContain(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	typeName := reflect.TypeOf(actual)
+
+	if matchError := oglematchers.Contains(expected[0]).Matches(actual); matchError != nil {
+		if fmt.Sprintf("%v", matchError) == "which is not a slice or array" {
+			return fmt.Sprintf(shouldHaveBeenAValidCollection, typeName)
+		}
+		return success
+	}
+	return fmt.Sprintf(shouldNotHaveContained, typeName, expected[0])
+}
+
+// ShouldContainKey receives exactly two parameters. The first is a map and the
+// second is a proposed key. Keys are compared with a simple '=='.
+func ShouldContainKey(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	keys, isMap := mapKeys(actual)
+	if !isMap {
+		return fmt.Sprintf(shouldHaveBeenAValidMap, reflect.TypeOf(actual))
+	}
+
+	if !keyFound(keys, expected[0]) {
+		return fmt.Sprintf(shouldHaveContainedKey, reflect.TypeOf(actual), expected)
+	}
+
+	return ""
+}
+
+// ShouldNotContainKey receives exactly two parameters. The first is a map and the
+// second is a proposed absent key. Keys are compared with a simple '=='.
+func ShouldNotContainKey(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	keys, isMap := mapKeys(actual)
+	if !isMap {
+		return fmt.Sprintf(shouldHaveBeenAValidMap, reflect.TypeOf(actual))
+	}
+
+	if keyFound(keys, expected[0]) {
+		return fmt.Sprintf(shouldNotHaveContainedKey, reflect.TypeOf(actual), expected)
+	}
+
+	return ""
+}
+
+func mapKeys(m interface{}) ([]reflect.Value, bool) {
+	value := reflect.ValueOf(m)
+	if value.Kind() != reflect.Map {
+		return nil, false
+	}
+	return value.MapKeys(), true
+}
+func keyFound(keys []reflect.Value, expectedKey interface{}) bool {
+	found := false
+	for _, key := range keys {
+		if key.Interface() == expectedKey {
+			found = true
+		}
+	}
+	return found
+}
+
+// ShouldBeIn receives at least 2 parameters. The first is a proposed member of the collection
+// that is passed in either as the second parameter, or of the collection that is comprised
+// of all the remaining parameters. This assertion ensures that the proposed member is in
+// the collection (using ShouldEqual).
+func ShouldBeIn(actual interface{}, expected ...interface{}) string {
+	if fail := atLeast(1, expected); fail != success {
+		return fail
+	}
+
+	if len(expected) == 1 {
+		return shouldBeIn(actual, expected[0])
+	}
+	return shouldBeIn(actual, expected)
+}
+func shouldBeIn(actual interface{}, expected interface{}) string {
+	if matchError := oglematchers.Contains(actual).Matches(expected); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenIn, actual, reflect.TypeOf(expected))
+	}
+	return success
+}
+
+// ShouldNotBeIn receives at least 2 parameters. The first is a proposed member of the collection
+// that is passed in either as the second parameter, or of the collection that is comprised
+// of all the remaining parameters. This assertion ensures that the proposed member is NOT in
+// the collection (using ShouldEqual).
+func ShouldNotBeIn(actual interface{}, expected ...interface{}) string {
+	if fail := atLeast(1, expected); fail != success {
+		return fail
+	}
+
+	if len(expected) == 1 {
+		return shouldNotBeIn(actual, expected[0])
+	}
+	return shouldNotBeIn(actual, expected)
+}
+func shouldNotBeIn(actual interface{}, expected interface{}) string {
+	if matchError := oglematchers.Contains(actual).Matches(expected); matchError == nil {
+		return fmt.Sprintf(shouldNotHaveBeenIn, actual, reflect.TypeOf(expected))
+	}
+	return success
+}
+
+// ShouldBeEmpty receives a single parameter (actual) and determines whether or not
+// calling len(actual) would return `0`. It obeys the rules specified by the len
+// function for determining length: http://golang.org/pkg/builtin/#len
+func ShouldBeEmpty(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	if actual == nil {
+		return success
+	}
+
+	value := reflect.ValueOf(actual)
+	switch value.Kind() {
+	case reflect.Slice:
+		if value.Len() == 0 {
+			return success
+		}
+	case reflect.Chan:
+		if value.Len() == 0 {
+			return success
+		}
+	case reflect.Map:
+		if value.Len() == 0 {
+			return success
+		}
+	case reflect.String:
+		if value.Len() == 0 {
+			return success
+		}
+	case reflect.Ptr:
+		elem := value.Elem()
+		kind := elem.Kind()
+		if (kind == reflect.Slice || kind == reflect.Array) && elem.Len() == 0 {
+			return success
+		}
+	}
+
+	return fmt.Sprintf(shouldHaveBeenEmpty, actual)
+}
+
+// ShouldNotBeEmpty receives a single parameter (actual) and determines whether or not
+// calling len(actual) would return a value greater than zero. It obeys the rules
+// specified by the `len` function for determining length: http://golang.org/pkg/builtin/#len
+func ShouldNotBeEmpty(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	if empty := ShouldBeEmpty(actual, expected...); empty != success {
+		return success
+	}
+	return fmt.Sprintf(shouldNotHaveBeenEmpty, actual)
+}
+
+// ShouldHaveLength receives 2 parameters. The first is a collection to check
+// the length of, the second being the expected length. It obeys the rules
+// specified by the len function for determining length:
+// http://golang.org/pkg/builtin/#len
+func ShouldHaveLength(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	var expectedLen int64
+	lenValue := reflect.ValueOf(expected[0])
+	switch lenValue.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		expectedLen = lenValue.Int()
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		expectedLen = int64(lenValue.Uint())
+	default:
+		return fmt.Sprintf(shouldHaveBeenAValidInteger, reflect.TypeOf(expected[0]))
+	}
+
+	if expectedLen < 0 {
+		return fmt.Sprintf(shouldHaveBeenAValidLength, expected[0])
+	}
+
+	value := reflect.ValueOf(actual)
+	switch value.Kind() {
+	case reflect.Slice,
+		reflect.Chan,
+		reflect.Map,
+		reflect.String:
+		if int64(value.Len()) == expectedLen {
+			return success
+		} else {
+			return fmt.Sprintf(shouldHaveHadLength, actual, value.Len(), expectedLen)
+		}
+	case reflect.Ptr:
+		elem := value.Elem()
+		kind := elem.Kind()
+		if kind == reflect.Slice || kind == reflect.Array {
+			if int64(elem.Len()) == expectedLen {
+				return success
+			} else {
+				return fmt.Sprintf(shouldHaveHadLength, actual, elem.Len(), expectedLen)
+			}
+		}
+	}
+	return fmt.Sprintf(shouldHaveBeenAValidCollection, reflect.TypeOf(actual))
+}
diff --git a/vendor/github.com/smartystreets/assertions/doc.go b/vendor/github.com/smartystreets/assertions/doc.go
new file mode 100644
index 00000000..5720fc29
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/doc.go
@@ -0,0 +1,105 @@
+// Package assertions contains the implementations for all assertions which
+// are referenced in goconvey's `convey` package
+// (github.com/smartystreets/goconvey/convey) and gunit (github.com/smartystreets/gunit)
+// for use with the So(...) method.
+// They can also be used in traditional Go test functions and even in
+// applications.
+//
+// Many of the assertions lean heavily on work done by Aaron Jacobs in his excellent oglematchers library.
+// (https://github.com/jacobsa/oglematchers)
+// The ShouldResemble assertion leans heavily on work done by Daniel Jacques in his very helpful go-render library.
+// (https://github.com/luci/go-render)
+package assertions
+
+import (
+	"fmt"
+	"runtime"
+)
+
+// By default we use a no-op serializer. The actual Serializer provides a JSON
+// representation of failure results on selected assertions so the goconvey
+// web UI can display a convenient diff.
+var serializer Serializer = new(noopSerializer)
+
+// GoConveyMode provides control over JSON serialization of failures. When
+// using the assertions in this package from the convey package JSON results
+// are very helpful and can be rendered in a DIFF view. In that case, this function
+// will be called with a true value to enable the JSON serialization. By default,
+// the assertions in this package will not serializer a JSON result, making
+// standalone ussage more convenient.
+func GoConveyMode(yes bool) {
+	if yes {
+		serializer = newSerializer()
+	} else {
+		serializer = new(noopSerializer)
+	}
+}
+
+type testingT interface {
+	Error(args ...interface{})
+}
+
+type Assertion struct {
+	t      testingT
+	failed bool
+}
+
+// New swallows the *testing.T struct and prints failed assertions using t.Error.
+// Example: assertions.New(t).So(1, should.Equal, 1)
+func New(t testingT) *Assertion {
+	return &Assertion{t: t}
+}
+
+// Failed reports whether any calls to So (on this Assertion instance) have failed.
+func (this *Assertion) Failed() bool {
+	return this.failed
+}
+
+// So calls the standalone So function and additionally, calls t.Error in failure scenarios.
+func (this *Assertion) So(actual interface{}, assert assertion, expected ...interface{}) bool {
+	ok, result := So(actual, assert, expected...)
+	if !ok {
+		this.failed = true
+		_, file, line, _ := runtime.Caller(1)
+		this.t.Error(fmt.Sprintf("\n%s:%d\n%s", file, line, result))
+	}
+	return ok
+}
+
+// So is a convenience function (as opposed to an inconvenience function?)
+// for running assertions on arbitrary arguments in any context, be it for testing or even
+// application logging. It allows you to perform assertion-like behavior (and get nicely
+// formatted messages detailing discrepancies) but without the program blowing up or panicking.
+// All that is required is to import this package and call `So` with one of the assertions
+// exported by this package as the second parameter.
+// The first return parameter is a boolean indicating if the assertion was true. The second
+// return parameter is the well-formatted message showing why an assertion was incorrect, or
+// blank if the assertion was correct.
+//
+// Example:
+//
+//   if ok, message := So(x, ShouldBeGreaterThan, y); !ok {
+//        log.Println(message)
+//   }
+//
+func So(actual interface{}, assert assertion, expected ...interface{}) (bool, string) {
+	if result := so(actual, assert, expected...); len(result) == 0 {
+		return true, result
+	} else {
+		return false, result
+	}
+}
+
+// so is like So, except that it only returns the string message, which is blank if the
+// assertion passed. Used to facilitate testing.
+func so(actual interface{}, assert func(interface{}, ...interface{}) string, expected ...interface{}) string {
+	return assert(actual, expected...)
+}
+
+// assertion is an alias for a function with a signature that the So()
+// function can handle. Any future or custom assertions should conform to this
+// method signature. The return value should be an empty string if the assertion
+// passes and a well-formed failure message if not.
+type assertion func(actual interface{}, expected ...interface{}) string
+
+////////////////////////////////////////////////////////////////////////////
diff --git a/vendor/github.com/smartystreets/assertions/equality.go b/vendor/github.com/smartystreets/assertions/equality.go
new file mode 100644
index 00000000..2b6049c3
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/equality.go
@@ -0,0 +1,280 @@
+package assertions
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+	"strings"
+
+	"github.com/smartystreets/assertions/internal/oglematchers"
+	"github.com/smartystreets/assertions/internal/go-render/render"
+)
+
+// default acceptable delta for ShouldAlmostEqual
+const defaultDelta = 0.0000000001
+
+// ShouldEqual receives exactly two parameters and does an equality check.
+func ShouldEqual(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	return shouldEqual(actual, expected[0])
+}
+func shouldEqual(actual, expected interface{}) (message string) {
+	defer func() {
+		if r := recover(); r != nil {
+			message = serializer.serialize(expected, actual, fmt.Sprintf(shouldHaveBeenEqual, expected, actual))
+			return
+		}
+	}()
+
+	if matchError := oglematchers.Equals(expected).Matches(actual); matchError != nil {
+		expectedSyntax := fmt.Sprintf("%v", expected)
+		actualSyntax := fmt.Sprintf("%v", actual)
+		if expectedSyntax == actualSyntax && reflect.TypeOf(expected) != reflect.TypeOf(actual) {
+			message = fmt.Sprintf(shouldHaveBeenEqualTypeMismatch, expected, expected, actual, actual)
+		} else {
+			message = fmt.Sprintf(shouldHaveBeenEqual, expected, actual)
+		}
+		message = serializer.serialize(expected, actual, message)
+		return
+	}
+
+	return success
+}
+
+// ShouldNotEqual receives exactly two parameters and does an inequality check.
+func ShouldNotEqual(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if ShouldEqual(actual, expected[0]) == success {
+		return fmt.Sprintf(shouldNotHaveBeenEqual, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldAlmostEqual makes sure that two parameters are close enough to being equal.
+// The acceptable delta may be specified with a third argument,
+// or a very small default delta will be used.
+func ShouldAlmostEqual(actual interface{}, expected ...interface{}) string {
+	actualFloat, expectedFloat, deltaFloat, err := cleanAlmostEqualInput(actual, expected...)
+
+	if err != "" {
+		return err
+	}
+
+	if math.Abs(actualFloat-expectedFloat) <= deltaFloat {
+		return success
+	} else {
+		return fmt.Sprintf(shouldHaveBeenAlmostEqual, actualFloat, expectedFloat)
+	}
+}
+
+// ShouldNotAlmostEqual is the inverse of ShouldAlmostEqual
+func ShouldNotAlmostEqual(actual interface{}, expected ...interface{}) string {
+	actualFloat, expectedFloat, deltaFloat, err := cleanAlmostEqualInput(actual, expected...)
+
+	if err != "" {
+		return err
+	}
+
+	if math.Abs(actualFloat-expectedFloat) > deltaFloat {
+		return success
+	} else {
+		return fmt.Sprintf(shouldHaveNotBeenAlmostEqual, actualFloat, expectedFloat)
+	}
+}
+
+func cleanAlmostEqualInput(actual interface{}, expected ...interface{}) (float64, float64, float64, string) {
+	deltaFloat := 0.0000000001
+
+	if len(expected) == 0 {
+		return 0.0, 0.0, 0.0, "This assertion requires exactly one comparison value and an optional delta (you provided neither)"
+	} else if len(expected) == 2 {
+		delta, err := getFloat(expected[1])
+
+		if err != nil {
+			return 0.0, 0.0, 0.0, "delta must be a numerical type"
+		}
+
+		deltaFloat = delta
+	} else if len(expected) > 2 {
+		return 0.0, 0.0, 0.0, "This assertion requires exactly one comparison value and an optional delta (you provided more values)"
+	}
+
+	actualFloat, err := getFloat(actual)
+
+	if err != nil {
+		return 0.0, 0.0, 0.0, err.Error()
+	}
+
+	expectedFloat, err := getFloat(expected[0])
+
+	if err != nil {
+		return 0.0, 0.0, 0.0, err.Error()
+	}
+
+	return actualFloat, expectedFloat, deltaFloat, ""
+}
+
+// returns the float value of any real number, or error if it is not a numerical type
+func getFloat(num interface{}) (float64, error) {
+	numValue := reflect.ValueOf(num)
+	numKind := numValue.Kind()
+
+	if numKind == reflect.Int ||
+		numKind == reflect.Int8 ||
+		numKind == reflect.Int16 ||
+		numKind == reflect.Int32 ||
+		numKind == reflect.Int64 {
+		return float64(numValue.Int()), nil
+	} else if numKind == reflect.Uint ||
+		numKind == reflect.Uint8 ||
+		numKind == reflect.Uint16 ||
+		numKind == reflect.Uint32 ||
+		numKind == reflect.Uint64 {
+		return float64(numValue.Uint()), nil
+	} else if numKind == reflect.Float32 ||
+		numKind == reflect.Float64 {
+		return numValue.Float(), nil
+	} else {
+		return 0.0, errors.New("must be a numerical type, but was " + numKind.String())
+	}
+}
+
+// ShouldResemble receives exactly two parameters and does a deep equal check (see reflect.DeepEqual)
+func ShouldResemble(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+
+	if matchError := oglematchers.DeepEquals(expected[0]).Matches(actual); matchError != nil {
+		return serializer.serializeDetailed(expected[0], actual,
+			fmt.Sprintf(shouldHaveResembled, render.Render(expected[0]), render.Render(actual)))
+	}
+
+	return success
+}
+
+// ShouldNotResemble receives exactly two parameters and does an inverse deep equal check (see reflect.DeepEqual)
+func ShouldNotResemble(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	} else if ShouldResemble(actual, expected[0]) == success {
+		return fmt.Sprintf(shouldNotHaveResembled, render.Render(actual), render.Render(expected[0]))
+	}
+	return success
+}
+
+// ShouldPointTo receives exactly two parameters and checks to see that they point to the same address.
+func ShouldPointTo(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	return shouldPointTo(actual, expected[0])
+
+}
+func shouldPointTo(actual, expected interface{}) string {
+	actualValue := reflect.ValueOf(actual)
+	expectedValue := reflect.ValueOf(expected)
+
+	if ShouldNotBeNil(actual) != success {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "first", "nil")
+	} else if ShouldNotBeNil(expected) != success {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "second", "nil")
+	} else if actualValue.Kind() != reflect.Ptr {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "first", "not")
+	} else if expectedValue.Kind() != reflect.Ptr {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "second", "not")
+	} else if ShouldEqual(actualValue.Pointer(), expectedValue.Pointer()) != success {
+		actualAddress := reflect.ValueOf(actual).Pointer()
+		expectedAddress := reflect.ValueOf(expected).Pointer()
+		return serializer.serialize(expectedAddress, actualAddress, fmt.Sprintf(shouldHavePointedTo,
+			actual, actualAddress,
+			expected, expectedAddress))
+	}
+	return success
+}
+
+// ShouldNotPointTo receives exactly two parameters and checks to see that they point to different addresess.
+func ShouldNotPointTo(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	compare := ShouldPointTo(actual, expected[0])
+	if strings.HasPrefix(compare, shouldBePointers) {
+		return compare
+	} else if compare == success {
+		return fmt.Sprintf(shouldNotHavePointedTo, actual, expected[0], reflect.ValueOf(actual).Pointer())
+	}
+	return success
+}
+
+// ShouldBeNil receives a single parameter and ensures that it is nil.
+func ShouldBeNil(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual == nil {
+		return success
+	} else if interfaceHasNilValue(actual) {
+		return success
+	}
+	return fmt.Sprintf(shouldHaveBeenNil, actual)
+}
+func interfaceHasNilValue(actual interface{}) bool {
+	value := reflect.ValueOf(actual)
+	kind := value.Kind()
+	nilable := kind == reflect.Slice ||
+		kind == reflect.Chan ||
+		kind == reflect.Func ||
+		kind == reflect.Ptr ||
+		kind == reflect.Map
+
+	// Careful: reflect.Value.IsNil() will panic unless it's an interface, chan, map, func, slice, or ptr
+	// Reference: http://golang.org/pkg/reflect/#Value.IsNil
+	return nilable && value.IsNil()
+}
+
+// ShouldNotBeNil receives a single parameter and ensures that it is not nil.
+func ShouldNotBeNil(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if ShouldBeNil(actual) == success {
+		return fmt.Sprintf(shouldNotHaveBeenNil, actual)
+	}
+	return success
+}
+
+// ShouldBeTrue receives a single parameter and ensures that it is true.
+func ShouldBeTrue(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual != true {
+		return fmt.Sprintf(shouldHaveBeenTrue, actual)
+	}
+	return success
+}
+
+// ShouldBeFalse receives a single parameter and ensures that it is false.
+func ShouldBeFalse(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual != false {
+		return fmt.Sprintf(shouldHaveBeenFalse, actual)
+	}
+	return success
+}
+
+// ShouldBeZeroValue receives a single parameter and ensures that it is
+// the Go equivalent of the default value, or "zero" value.
+func ShouldBeZeroValue(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+	zeroVal := reflect.Zero(reflect.TypeOf(actual)).Interface()
+	if !reflect.DeepEqual(zeroVal, actual) {
+		return serializer.serialize(zeroVal, actual, fmt.Sprintf(shouldHaveBeenZeroValue, actual))
+	}
+	return success
+}
diff --git a/vendor/github.com/smartystreets/assertions/filter.go b/vendor/github.com/smartystreets/assertions/filter.go
new file mode 100644
index 00000000..ee368a97
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/filter.go
@@ -0,0 +1,23 @@
+package assertions
+
+import "fmt"
+
+const (
+	success                = ""
+	needExactValues        = "This assertion requires exactly %d comparison values (you provided %d)."
+	needNonEmptyCollection = "This assertion requires at least 1 comparison value (you provided 0)."
+)
+
+func need(needed int, expected []interface{}) string {
+	if len(expected) != needed {
+		return fmt.Sprintf(needExactValues, needed, len(expected))
+	}
+	return success
+}
+
+func atLeast(minimum int, expected []interface{}) string {
+	if len(expected) < 1 {
+		return needNonEmptyCollection
+	}
+	return success
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/go-render/LICENSE b/vendor/github.com/smartystreets/assertions/internal/go-render/LICENSE
new file mode 100644
index 00000000..6280ff0e
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/go-render/LICENSE
@@ -0,0 +1,27 @@
+// Copyright (c) 2015 The Chromium Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/smartystreets/assertions/internal/go-render/render/render.go b/vendor/github.com/smartystreets/assertions/internal/go-render/render/render.go
new file mode 100644
index 00000000..e070a6b3
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/go-render/render/render.go
@@ -0,0 +1,327 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package render
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"sort"
+	"strconv"
+)
+
+var implicitTypeMap = map[reflect.Kind]string{
+	reflect.Bool:       "bool",
+	reflect.String:     "string",
+	reflect.Int:        "int",
+	reflect.Int8:       "int8",
+	reflect.Int16:      "int16",
+	reflect.Int32:      "int32",
+	reflect.Int64:      "int64",
+	reflect.Uint:       "uint",
+	reflect.Uint8:      "uint8",
+	reflect.Uint16:     "uint16",
+	reflect.Uint32:     "uint32",
+	reflect.Uint64:     "uint64",
+	reflect.Float32:    "float32",
+	reflect.Float64:    "float64",
+	reflect.Complex64:  "complex64",
+	reflect.Complex128: "complex128",
+}
+
+// Render converts a structure to a string representation. Unline the "%#v"
+// format string, this resolves pointer types' contents in structs, maps, and
+// slices/arrays and prints their field values.
+func Render(v interface{}) string {
+	buf := bytes.Buffer{}
+	s := (*traverseState)(nil)
+	s.render(&buf, 0, reflect.ValueOf(v))
+	return buf.String()
+}
+
+// renderPointer is called to render a pointer value.
+//
+// This is overridable so that the test suite can have deterministic pointer
+// values in its expectations.
+var renderPointer = func(buf *bytes.Buffer, p uintptr) {
+	fmt.Fprintf(buf, "0x%016x", p)
+}
+
+// traverseState is used to note and avoid recursion as struct members are being
+// traversed.
+//
+// traverseState is allowed to be nil. Specifically, the root state is nil.
+type traverseState struct {
+	parent *traverseState
+	ptr    uintptr
+}
+
+func (s *traverseState) forkFor(ptr uintptr) *traverseState {
+	for cur := s; cur != nil; cur = cur.parent {
+		if ptr == cur.ptr {
+			return nil
+		}
+	}
+
+	fs := &traverseState{
+		parent: s,
+		ptr:    ptr,
+	}
+	return fs
+}
+
+func (s *traverseState) render(buf *bytes.Buffer, ptrs int, v reflect.Value) {
+	if v.Kind() == reflect.Invalid {
+		buf.WriteString("nil")
+		return
+	}
+	vt := v.Type()
+
+	// If the type being rendered is a potentially recursive type (a type that
+	// can contain itself as a member), we need to avoid recursion.
+	//
+	// If we've already seen this type before, mark that this is the case and
+	// write a recursion placeholder instead of actually rendering it.
+	//
+	// If we haven't seen it before, fork our `seen` tracking so any higher-up
+	// renderers will also render it at least once, then mark that we've seen it
+	// to avoid recursing on lower layers.
+	pe := uintptr(0)
+	vk := vt.Kind()
+	switch vk {
+	case reflect.Ptr:
+		// Since structs and arrays aren't pointers, they can't directly be
+		// recursed, but they can contain pointers to themselves. Record their
+		// pointer to avoid this.
+		switch v.Elem().Kind() {
+		case reflect.Struct, reflect.Array:
+			pe = v.Pointer()
+		}
+
+	case reflect.Slice, reflect.Map:
+		pe = v.Pointer()
+	}
+	if pe != 0 {
+		s = s.forkFor(pe)
+		if s == nil {
+			buf.WriteString("<REC(")
+			writeType(buf, ptrs, vt)
+			buf.WriteString(")>")
+			return
+		}
+	}
+
+	switch vk {
+	case reflect.Struct:
+		writeType(buf, ptrs, vt)
+		buf.WriteRune('{')
+		for i := 0; i < vt.NumField(); i++ {
+			if i > 0 {
+				buf.WriteString(", ")
+			}
+			buf.WriteString(vt.Field(i).Name)
+			buf.WriteRune(':')
+
+			s.render(buf, 0, v.Field(i))
+		}
+		buf.WriteRune('}')
+
+	case reflect.Slice:
+		if v.IsNil() {
+			writeType(buf, ptrs, vt)
+			buf.WriteString("(nil)")
+			return
+		}
+		fallthrough
+
+	case reflect.Array:
+		writeType(buf, ptrs, vt)
+		buf.WriteString("{")
+		for i := 0; i < v.Len(); i++ {
+			if i > 0 {
+				buf.WriteString(", ")
+			}
+
+			s.render(buf, 0, v.Index(i))
+		}
+		buf.WriteRune('}')
+
+	case reflect.Map:
+		writeType(buf, ptrs, vt)
+		if v.IsNil() {
+			buf.WriteString("(nil)")
+		} else {
+			buf.WriteString("{")
+
+			mkeys := v.MapKeys()
+			tryAndSortMapKeys(vt, mkeys)
+
+			for i, mk := range mkeys {
+				if i > 0 {
+					buf.WriteString(", ")
+				}
+
+				s.render(buf, 0, mk)
+				buf.WriteString(":")
+				s.render(buf, 0, v.MapIndex(mk))
+			}
+			buf.WriteRune('}')
+		}
+
+	case reflect.Ptr:
+		ptrs++
+		fallthrough
+	case reflect.Interface:
+		if v.IsNil() {
+			writeType(buf, ptrs, v.Type())
+			buf.WriteRune('(')
+			fmt.Fprint(buf, "nil")
+			buf.WriteRune(')')
+		} else {
+			s.render(buf, ptrs, v.Elem())
+		}
+
+	case reflect.Chan, reflect.Func, reflect.UnsafePointer:
+		writeType(buf, ptrs, vt)
+		buf.WriteRune('(')
+		renderPointer(buf, v.Pointer())
+		buf.WriteRune(')')
+
+	default:
+		tstr := vt.String()
+		implicit := ptrs == 0 && implicitTypeMap[vk] == tstr
+		if !implicit {
+			writeType(buf, ptrs, vt)
+			buf.WriteRune('(')
+		}
+
+		switch vk {
+		case reflect.String:
+			fmt.Fprintf(buf, "%q", v.String())
+		case reflect.Bool:
+			fmt.Fprintf(buf, "%v", v.Bool())
+
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			fmt.Fprintf(buf, "%d", v.Int())
+
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			fmt.Fprintf(buf, "%d", v.Uint())
+
+		case reflect.Float32, reflect.Float64:
+			fmt.Fprintf(buf, "%g", v.Float())
+
+		case reflect.Complex64, reflect.Complex128:
+			fmt.Fprintf(buf, "%g", v.Complex())
+		}
+
+		if !implicit {
+			buf.WriteRune(')')
+		}
+	}
+}
+
+func writeType(buf *bytes.Buffer, ptrs int, t reflect.Type) {
+	parens := ptrs > 0
+	switch t.Kind() {
+	case reflect.Chan, reflect.Func, reflect.UnsafePointer:
+		parens = true
+	}
+
+	if parens {
+		buf.WriteRune('(')
+		for i := 0; i < ptrs; i++ {
+			buf.WriteRune('*')
+		}
+	}
+
+	switch t.Kind() {
+	case reflect.Ptr:
+		if ptrs == 0 {
+			// This pointer was referenced from within writeType (e.g., as part of
+			// rendering a list), and so hasn't had its pointer asterisk accounted
+			// for.
+			buf.WriteRune('*')
+		}
+		writeType(buf, 0, t.Elem())
+
+	case reflect.Interface:
+		if n := t.Name(); n != "" {
+			buf.WriteString(t.String())
+		} else {
+			buf.WriteString("interface{}")
+		}
+
+	case reflect.Array:
+		buf.WriteRune('[')
+		buf.WriteString(strconv.FormatInt(int64(t.Len()), 10))
+		buf.WriteRune(']')
+		writeType(buf, 0, t.Elem())
+
+	case reflect.Slice:
+		if t == reflect.SliceOf(t.Elem()) {
+			buf.WriteString("[]")
+			writeType(buf, 0, t.Elem())
+		} else {
+			// Custom slice type, use type name.
+			buf.WriteString(t.String())
+		}
+
+	case reflect.Map:
+		if t == reflect.MapOf(t.Key(), t.Elem()) {
+			buf.WriteString("map[")
+			writeType(buf, 0, t.Key())
+			buf.WriteRune(']')
+			writeType(buf, 0, t.Elem())
+		} else {
+			// Custom map type, use type name.
+			buf.WriteString(t.String())
+		}
+
+	default:
+		buf.WriteString(t.String())
+	}
+
+	if parens {
+		buf.WriteRune(')')
+	}
+}
+
+type sortableValueSlice struct {
+	kind     reflect.Kind
+	elements []reflect.Value
+}
+
+func (s *sortableValueSlice) Len() int {
+	return len(s.elements)
+}
+
+func (s *sortableValueSlice) Less(i, j int) bool {
+	switch s.kind {
+	case reflect.String:
+		return s.elements[i].String() < s.elements[j].String()
+
+	case reflect.Int:
+		return s.elements[i].Int() < s.elements[j].Int()
+
+	default:
+		panic(fmt.Errorf("unsupported sort kind: %s", s.kind))
+	}
+}
+
+func (s *sortableValueSlice) Swap(i, j int) {
+	s.elements[i], s.elements[j] = s.elements[j], s.elements[i]
+}
+
+func tryAndSortMapKeys(mt reflect.Type, k []reflect.Value) {
+	// Try our stock sortable values.
+	switch mt.Key().Kind() {
+	case reflect.String, reflect.Int:
+		vs := &sortableValueSlice{
+			kind:     mt.Key().Kind(),
+			elements: k,
+		}
+		sort.Sort(vs)
+	}
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/LICENSE b/vendor/github.com/smartystreets/assertions/internal/oglematchers/LICENSE
new file mode 100644
index 00000000..d6456956
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/README.md b/vendor/github.com/smartystreets/assertions/internal/oglematchers/README.md
new file mode 100644
index 00000000..215a2bb7
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/README.md
@@ -0,0 +1,58 @@
+[![GoDoc](https://godoc.org/github.com/smartystreets/assertions/internal/oglematchers?status.svg)](https://godoc.org/github.com/smartystreets/assertions/internal/oglematchers)
+
+`oglematchers` is a package for the Go programming language containing a set of
+matchers, useful in a testing or mocking framework, inspired by and mostly
+compatible with [Google Test][googletest] for C++ and
+[Google JS Test][google-js-test]. The package is used by the
+[ogletest][ogletest] testing framework and [oglemock][oglemock] mocking
+framework, which may be more directly useful to you, but can be generically used
+elsewhere as well.
+
+A "matcher" is simply an object with a `Matches` method defining a set of golang
+values matched by the matcher, and a `Description` method describing that set.
+For example, here are some matchers:
+
+```go
+// Numbers
+Equals(17.13)
+LessThan(19)
+
+// Strings
+Equals("taco")
+HasSubstr("burrito")
+MatchesRegex("t.*o")
+
+// Combining matchers
+AnyOf(LessThan(17), GreaterThan(19))
+```
+
+There are lots more; see [here][reference] for a reference. You can also add
+your own simply by implementing the `oglematchers.Matcher` interface.
+
+
+Installation
+------------
+
+First, make sure you have installed Go 1.0.2 or newer. See
+[here][golang-install] for instructions.
+
+Use the following command to install `oglematchers` and keep it up to date:
+
+    go get -u github.com/smartystreets/assertions/internal/oglematchers
+
+
+Documentation
+-------------
+
+See [here][reference] for documentation. Alternatively, you can install the
+package and then use `godoc`:
+
+    godoc github.com/smartystreets/assertions/internal/oglematchers
+
+
+[reference]: http://godoc.org/github.com/smartystreets/assertions/internal/oglematchers
+[golang-install]: http://golang.org/doc/install.html
+[googletest]: http://code.google.com/p/googletest/
+[google-js-test]: http://code.google.com/p/google-js-test/
+[ogletest]: http://github.com/smartystreets/assertions/internal/ogletest
+[oglemock]: http://github.com/smartystreets/assertions/internal/oglemock
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/all_of.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/all_of.go
new file mode 100644
index 00000000..d93a9740
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/all_of.go
@@ -0,0 +1,70 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"strings"
+)
+
+// AllOf accepts a set of matchers S and returns a matcher that follows the
+// algorithm below when considering a candidate c:
+//
+//  1. Return true if for every Matcher m in S, m matches c.
+//
+//  2. Otherwise, if there is a matcher m in S such that m returns a fatal
+//     error for c, return that matcher's error message.
+//
+//  3. Otherwise, return false with the error from some wrapped matcher.
+//
+// This is akin to a logical AND operation for matchers.
+func AllOf(matchers ...Matcher) Matcher {
+	return &allOfMatcher{matchers}
+}
+
+type allOfMatcher struct {
+	wrappedMatchers []Matcher
+}
+
+func (m *allOfMatcher) Description() string {
+	// Special case: the empty set.
+	if len(m.wrappedMatchers) == 0 {
+		return "is anything"
+	}
+
+	// Join the descriptions for the wrapped matchers.
+	wrappedDescs := make([]string, len(m.wrappedMatchers))
+	for i, wrappedMatcher := range m.wrappedMatchers {
+		wrappedDescs[i] = wrappedMatcher.Description()
+	}
+
+	return strings.Join(wrappedDescs, ", and ")
+}
+
+func (m *allOfMatcher) Matches(c interface{}) (err error) {
+	for _, wrappedMatcher := range m.wrappedMatchers {
+		if wrappedErr := wrappedMatcher.Matches(c); wrappedErr != nil {
+			err = wrappedErr
+
+			// If the error is fatal, return immediately with this error.
+			_, ok := wrappedErr.(*FatalError)
+			if ok {
+				return
+			}
+		}
+	}
+
+	return
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/any.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/any.go
new file mode 100644
index 00000000..f6991ec1
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/any.go
@@ -0,0 +1,32 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// Any returns a matcher that matches any value.
+func Any() Matcher {
+	return &anyMatcher{}
+}
+
+type anyMatcher struct {
+}
+
+func (m *anyMatcher) Description() string {
+	return "is anything"
+}
+
+func (m *anyMatcher) Matches(c interface{}) error {
+	return nil
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/any_of.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/any_of.go
new file mode 100644
index 00000000..2918b51f
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/any_of.go
@@ -0,0 +1,94 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// AnyOf accepts a set of values S and returns a matcher that follows the
+// algorithm below when considering a candidate c:
+//
+//  1. If there exists a value m in S such that m implements the Matcher
+//     interface and m matches c, return true.
+//
+//  2. Otherwise, if there exists a value v in S such that v does not implement
+//     the Matcher interface and the matcher Equals(v) matches c, return true.
+//
+//  3. Otherwise, if there is a value m in S such that m implements the Matcher
+//     interface and m returns a fatal error for c, return that fatal error.
+//
+//  4. Otherwise, return false.
+//
+// This is akin to a logical OR operation for matchers, with non-matchers x
+// being treated as Equals(x).
+func AnyOf(vals ...interface{}) Matcher {
+	// Get ahold of a type variable for the Matcher interface.
+	var dummy *Matcher
+	matcherType := reflect.TypeOf(dummy).Elem()
+
+	// Create a matcher for each value, or use the value itself if it's already a
+	// matcher.
+	wrapped := make([]Matcher, len(vals))
+	for i, v := range vals {
+		t := reflect.TypeOf(v)
+		if t != nil && t.Implements(matcherType) {
+			wrapped[i] = v.(Matcher)
+		} else {
+			wrapped[i] = Equals(v)
+		}
+	}
+
+	return &anyOfMatcher{wrapped}
+}
+
+type anyOfMatcher struct {
+	wrapped []Matcher
+}
+
+func (m *anyOfMatcher) Description() string {
+	wrappedDescs := make([]string, len(m.wrapped))
+	for i, matcher := range m.wrapped {
+		wrappedDescs[i] = matcher.Description()
+	}
+
+	return fmt.Sprintf("or(%s)", strings.Join(wrappedDescs, ", "))
+}
+
+func (m *anyOfMatcher) Matches(c interface{}) (err error) {
+	err = errors.New("")
+
+	// Try each matcher in turn.
+	for _, matcher := range m.wrapped {
+		wrappedErr := matcher.Matches(c)
+
+		// Return immediately if there's a match.
+		if wrappedErr == nil {
+			err = nil
+			return
+		}
+
+		// Note the fatal error, if any.
+		if _, isFatal := wrappedErr.(*FatalError); isFatal {
+			err = wrappedErr
+		}
+	}
+
+	return
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/contains.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/contains.go
new file mode 100644
index 00000000..2f326dbc
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/contains.go
@@ -0,0 +1,61 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// Return a matcher that matches arrays slices with at least one element that
+// matches the supplied argument. If the argument x is not itself a Matcher,
+// this is equivalent to Contains(Equals(x)).
+func Contains(x interface{}) Matcher {
+	var result containsMatcher
+	var ok bool
+
+	if result.elementMatcher, ok = x.(Matcher); !ok {
+		result.elementMatcher = Equals(x)
+	}
+
+	return &result
+}
+
+type containsMatcher struct {
+	elementMatcher Matcher
+}
+
+func (m *containsMatcher) Description() string {
+	return fmt.Sprintf("contains: %s", m.elementMatcher.Description())
+}
+
+func (m *containsMatcher) Matches(candidate interface{}) error {
+	// The candidate must be a slice or an array.
+	v := reflect.ValueOf(candidate)
+	if v.Kind() != reflect.Slice && v.Kind() != reflect.Array {
+		return NewFatalError("which is not a slice or array")
+	}
+
+	// Check each element.
+	for i := 0; i < v.Len(); i++ {
+		elem := v.Index(i)
+		if matchErr := m.elementMatcher.Matches(elem.Interface()); matchErr == nil {
+			return nil
+		}
+	}
+
+	return fmt.Errorf("")
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go
new file mode 100644
index 00000000..1d91baef
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go
@@ -0,0 +1,88 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+var byteSliceType reflect.Type = reflect.TypeOf([]byte{})
+
+// DeepEquals returns a matcher that matches based on 'deep equality', as
+// defined by the reflect package. This matcher requires that values have
+// identical types to x.
+func DeepEquals(x interface{}) Matcher {
+	return &deepEqualsMatcher{x}
+}
+
+type deepEqualsMatcher struct {
+	x interface{}
+}
+
+func (m *deepEqualsMatcher) Description() string {
+	xDesc := fmt.Sprintf("%v", m.x)
+	xValue := reflect.ValueOf(m.x)
+
+	// Special case: fmt.Sprintf presents nil slices as "[]", but
+	// reflect.DeepEqual makes a distinction between nil and empty slices. Make
+	// this less confusing.
+	if xValue.Kind() == reflect.Slice && xValue.IsNil() {
+		xDesc = "<nil slice>"
+	}
+
+	return fmt.Sprintf("deep equals: %s", xDesc)
+}
+
+func (m *deepEqualsMatcher) Matches(c interface{}) error {
+	// Make sure the types match.
+	ct := reflect.TypeOf(c)
+	xt := reflect.TypeOf(m.x)
+
+	if ct != xt {
+		return NewFatalError(fmt.Sprintf("which is of type %v", ct))
+	}
+
+	// Special case: handle byte slices more efficiently.
+	cValue := reflect.ValueOf(c)
+	xValue := reflect.ValueOf(m.x)
+
+	if ct == byteSliceType && !cValue.IsNil() && !xValue.IsNil() {
+		xBytes := m.x.([]byte)
+		cBytes := c.([]byte)
+
+		if bytes.Equal(cBytes, xBytes) {
+			return nil
+		}
+
+		return errors.New("")
+	}
+
+	// Defer to the reflect package.
+	if reflect.DeepEqual(m.x, c) {
+		return nil
+	}
+
+	// Special case: if the comparison failed because c is the nil slice, given
+	// an indication of this (since its value is printed as "[]").
+	if cValue.Kind() == reflect.Slice && cValue.IsNil() {
+		return errors.New("which is nil")
+	}
+
+	return errors.New("")
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/elements_are.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/elements_are.go
new file mode 100644
index 00000000..2941847c
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/elements_are.go
@@ -0,0 +1,91 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// Given a list of arguments M, ElementsAre returns a matcher that matches
+// arrays and slices A where all of the following hold:
+//
+//  *  A is the same length as M.
+//
+//  *  For each i < len(A) where M[i] is a matcher, A[i] matches M[i].
+//
+//  *  For each i < len(A) where M[i] is not a matcher, A[i] matches
+//     Equals(M[i]).
+//
+func ElementsAre(M ...interface{}) Matcher {
+	// Copy over matchers, or convert to Equals(x) for non-matcher x.
+	subMatchers := make([]Matcher, len(M))
+	for i, x := range M {
+		if matcher, ok := x.(Matcher); ok {
+			subMatchers[i] = matcher
+			continue
+		}
+
+		subMatchers[i] = Equals(x)
+	}
+
+	return &elementsAreMatcher{subMatchers}
+}
+
+type elementsAreMatcher struct {
+	subMatchers []Matcher
+}
+
+func (m *elementsAreMatcher) Description() string {
+	subDescs := make([]string, len(m.subMatchers))
+	for i, sm := range m.subMatchers {
+		subDescs[i] = sm.Description()
+	}
+
+	return fmt.Sprintf("elements are: [%s]", strings.Join(subDescs, ", "))
+}
+
+func (m *elementsAreMatcher) Matches(candidates interface{}) error {
+	// The candidate must be a slice or an array.
+	v := reflect.ValueOf(candidates)
+	if v.Kind() != reflect.Slice && v.Kind() != reflect.Array {
+		return NewFatalError("which is not a slice or array")
+	}
+
+	// The length must be correct.
+	if v.Len() != len(m.subMatchers) {
+		return errors.New(fmt.Sprintf("which is of length %d", v.Len()))
+	}
+
+	// Check each element.
+	for i, subMatcher := range m.subMatchers {
+		c := v.Index(i)
+		if matchErr := subMatcher.Matches(c.Interface()); matchErr != nil {
+			// Return an errors indicating which element doesn't match. If the
+			// matcher error was fatal, make this one fatal too.
+			err := errors.New(fmt.Sprintf("whose element %d doesn't match", i))
+			if _, isFatal := matchErr.(*FatalError); isFatal {
+				err = NewFatalError(err.Error())
+			}
+
+			return err
+		}
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/equals.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/equals.go
new file mode 100644
index 00000000..a510707b
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/equals.go
@@ -0,0 +1,541 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+)
+
+// Equals(x) returns a matcher that matches values v such that v and x are
+// equivalent. This includes the case when the comparison v == x using Go's
+// built-in comparison operator is legal (except for structs, which this
+// matcher does not support), but for convenience the following rules also
+// apply:
+//
+//  *  Type checking is done based on underlying types rather than actual
+//     types, so that e.g. two aliases for string can be compared:
+//
+//         type stringAlias1 string
+//         type stringAlias2 string
+//
+//         a := "taco"
+//         b := stringAlias1("taco")
+//         c := stringAlias2("taco")
+//
+//         ExpectTrue(a == b)  // Legal, passes
+//         ExpectTrue(b == c)  // Illegal, doesn't compile
+//
+//         ExpectThat(a, Equals(b))  // Passes
+//         ExpectThat(b, Equals(c))  // Passes
+//
+//  *  Values of numeric type are treated as if they were abstract numbers, and
+//     compared accordingly. Therefore Equals(17) will match int(17),
+//     int16(17), uint(17), float32(17), complex64(17), and so on.
+//
+// If you want a stricter matcher that contains no such cleverness, see
+// IdenticalTo instead.
+//
+// Arrays are supported by this matcher, but do not participate in the
+// exceptions above. Two arrays compared with this matcher must have identical
+// types, and their element type must itself be comparable according to Go's ==
+// operator.
+func Equals(x interface{}) Matcher {
+	v := reflect.ValueOf(x)
+
+	// This matcher doesn't support structs.
+	if v.Kind() == reflect.Struct {
+		panic(fmt.Sprintf("oglematchers.Equals: unsupported kind %v", v.Kind()))
+	}
+
+	// The == operator is not defined for non-nil slices.
+	if v.Kind() == reflect.Slice && v.Pointer() != uintptr(0) {
+		panic(fmt.Sprintf("oglematchers.Equals: non-nil slice"))
+	}
+
+	return &equalsMatcher{v}
+}
+
+type equalsMatcher struct {
+	expectedValue reflect.Value
+}
+
+////////////////////////////////////////////////////////////////////////
+// Numeric types
+////////////////////////////////////////////////////////////////////////
+
+func isSignedInteger(v reflect.Value) bool {
+	k := v.Kind()
+	return k >= reflect.Int && k <= reflect.Int64
+}
+
+func isUnsignedInteger(v reflect.Value) bool {
+	k := v.Kind()
+	return k >= reflect.Uint && k <= reflect.Uintptr
+}
+
+func isInteger(v reflect.Value) bool {
+	return isSignedInteger(v) || isUnsignedInteger(v)
+}
+
+func isFloat(v reflect.Value) bool {
+	k := v.Kind()
+	return k == reflect.Float32 || k == reflect.Float64
+}
+
+func isComplex(v reflect.Value) bool {
+	k := v.Kind()
+	return k == reflect.Complex64 || k == reflect.Complex128
+}
+
+func checkAgainstInt64(e int64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		if c.Int() == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		u := c.Uint()
+		if u <= math.MaxInt64 && int64(u) == e {
+			err = nil
+		}
+
+	// Turn around the various floating point types so that the checkAgainst*
+	// functions for them can deal with precision issues.
+	case isFloat(c), isComplex(c):
+		return Equals(c.Interface()).Matches(e)
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstUint64(e uint64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		i := c.Int()
+		if i >= 0 && uint64(i) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if c.Uint() == e {
+			err = nil
+		}
+
+	// Turn around the various floating point types so that the checkAgainst*
+	// functions for them can deal with precision issues.
+	case isFloat(c), isComplex(c):
+		return Equals(c.Interface()).Matches(e)
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstFloat32(e float32, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		if float32(c.Int()) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if float32(c.Uint()) == e {
+			err = nil
+		}
+
+	case isFloat(c):
+		// Compare using float32 to avoid a false sense of precision; otherwise
+		// e.g. Equals(float32(0.1)) won't match float32(0.1).
+		if float32(c.Float()) == e {
+			err = nil
+		}
+
+	case isComplex(c):
+		comp := c.Complex()
+		rl := real(comp)
+		im := imag(comp)
+
+		// Compare using float32 to avoid a false sense of precision; otherwise
+		// e.g. Equals(float32(0.1)) won't match (0.1 + 0i).
+		if im == 0 && float32(rl) == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstFloat64(e float64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	ck := c.Kind()
+
+	switch {
+	case isSignedInteger(c):
+		if float64(c.Int()) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if float64(c.Uint()) == e {
+			err = nil
+		}
+
+	// If the actual value is lower precision, turn the comparison around so we
+	// apply the low-precision rules. Otherwise, e.g. Equals(0.1) may not match
+	// float32(0.1).
+	case ck == reflect.Float32 || ck == reflect.Complex64:
+		return Equals(c.Interface()).Matches(e)
+
+		// Otherwise, compare with double precision.
+	case isFloat(c):
+		if c.Float() == e {
+			err = nil
+		}
+
+	case isComplex(c):
+		comp := c.Complex()
+		rl := real(comp)
+		im := imag(comp)
+
+		if im == 0 && rl == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstComplex64(e complex64, c reflect.Value) (err error) {
+	err = errors.New("")
+	realPart := real(e)
+	imaginaryPart := imag(e)
+
+	switch {
+	case isInteger(c) || isFloat(c):
+		// If we have no imaginary part, then we should just compare against the
+		// real part. Otherwise, we can't be equal.
+		if imaginaryPart != 0 {
+			return
+		}
+
+		return checkAgainstFloat32(realPart, c)
+
+	case isComplex(c):
+		// Compare using complex64 to avoid a false sense of precision; otherwise
+		// e.g. Equals(0.1 + 0i) won't match float32(0.1).
+		if complex64(c.Complex()) == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstComplex128(e complex128, c reflect.Value) (err error) {
+	err = errors.New("")
+	realPart := real(e)
+	imaginaryPart := imag(e)
+
+	switch {
+	case isInteger(c) || isFloat(c):
+		// If we have no imaginary part, then we should just compare against the
+		// real part. Otherwise, we can't be equal.
+		if imaginaryPart != 0 {
+			return
+		}
+
+		return checkAgainstFloat64(realPart, c)
+
+	case isComplex(c):
+		if c.Complex() == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+////////////////////////////////////////////////////////////////////////
+// Other types
+////////////////////////////////////////////////////////////////////////
+
+func checkAgainstBool(e bool, c reflect.Value) (err error) {
+	if c.Kind() != reflect.Bool {
+		err = NewFatalError("which is not a bool")
+		return
+	}
+
+	err = errors.New("")
+	if c.Bool() == e {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstChan(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "chan int".
+	typeStr := fmt.Sprintf("%s %s", e.Type().ChanDir(), e.Type().Elem())
+
+	// Make sure c is a chan of the correct type.
+	if c.Kind() != reflect.Chan ||
+		c.Type().ChanDir() != e.Type().ChanDir() ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstFunc(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a function.
+	if c.Kind() != reflect.Func {
+		err = NewFatalError("which is not a function")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstMap(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a map.
+	if c.Kind() != reflect.Map {
+		err = NewFatalError("which is not a map")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstPtr(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "*int".
+	typeStr := fmt.Sprintf("*%v", e.Type().Elem())
+
+	// Make sure c is a pointer of the correct type.
+	if c.Kind() != reflect.Ptr ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstSlice(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "[]int".
+	typeStr := fmt.Sprintf("[]%v", e.Type().Elem())
+
+	// Make sure c is a slice of the correct type.
+	if c.Kind() != reflect.Slice ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstString(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a string.
+	if c.Kind() != reflect.String {
+		err = NewFatalError("which is not a string")
+		return
+	}
+
+	err = errors.New("")
+	if c.String() == e.String() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstArray(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "[2]int".
+	typeStr := fmt.Sprintf("%v", e.Type())
+
+	// Make sure c is the correct type.
+	if c.Type() != e.Type() {
+		err = NewFatalError(fmt.Sprintf("which is not %s", typeStr))
+		return
+	}
+
+	// Check for equality.
+	if e.Interface() != c.Interface() {
+		err = errors.New("")
+		return
+	}
+
+	return
+}
+
+func checkAgainstUnsafePointer(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a pointer.
+	if c.Kind() != reflect.UnsafePointer {
+		err = NewFatalError("which is not a unsafe.Pointer")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkForNil(c reflect.Value) (err error) {
+	err = errors.New("")
+
+	// Make sure it is legal to call IsNil.
+	switch c.Kind() {
+	case reflect.Invalid:
+	case reflect.Chan:
+	case reflect.Func:
+	case reflect.Interface:
+	case reflect.Map:
+	case reflect.Ptr:
+	case reflect.Slice:
+
+	default:
+		err = NewFatalError("which cannot be compared to nil")
+		return
+	}
+
+	// Ask whether the value is nil. Handle a nil literal (kind Invalid)
+	// specially, since it's not legal to call IsNil there.
+	if c.Kind() == reflect.Invalid || c.IsNil() {
+		err = nil
+	}
+	return
+}
+
+////////////////////////////////////////////////////////////////////////
+// Public implementation
+////////////////////////////////////////////////////////////////////////
+
+func (m *equalsMatcher) Matches(candidate interface{}) error {
+	e := m.expectedValue
+	c := reflect.ValueOf(candidate)
+	ek := e.Kind()
+
+	switch {
+	case ek == reflect.Bool:
+		return checkAgainstBool(e.Bool(), c)
+
+	case isSignedInteger(e):
+		return checkAgainstInt64(e.Int(), c)
+
+	case isUnsignedInteger(e):
+		return checkAgainstUint64(e.Uint(), c)
+
+	case ek == reflect.Float32:
+		return checkAgainstFloat32(float32(e.Float()), c)
+
+	case ek == reflect.Float64:
+		return checkAgainstFloat64(e.Float(), c)
+
+	case ek == reflect.Complex64:
+		return checkAgainstComplex64(complex64(e.Complex()), c)
+
+	case ek == reflect.Complex128:
+		return checkAgainstComplex128(complex128(e.Complex()), c)
+
+	case ek == reflect.Chan:
+		return checkAgainstChan(e, c)
+
+	case ek == reflect.Func:
+		return checkAgainstFunc(e, c)
+
+	case ek == reflect.Map:
+		return checkAgainstMap(e, c)
+
+	case ek == reflect.Ptr:
+		return checkAgainstPtr(e, c)
+
+	case ek == reflect.Slice:
+		return checkAgainstSlice(e, c)
+
+	case ek == reflect.String:
+		return checkAgainstString(e, c)
+
+	case ek == reflect.Array:
+		return checkAgainstArray(e, c)
+
+	case ek == reflect.UnsafePointer:
+		return checkAgainstUnsafePointer(e, c)
+
+	case ek == reflect.Invalid:
+		return checkForNil(c)
+	}
+
+	panic(fmt.Sprintf("equalsMatcher.Matches: unexpected kind: %v", ek))
+}
+
+func (m *equalsMatcher) Description() string {
+	// Special case: handle nil.
+	if !m.expectedValue.IsValid() {
+		return "is nil"
+	}
+
+	return fmt.Sprintf("%v", m.expectedValue.Interface())
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/error.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/error.go
new file mode 100644
index 00000000..8a078e36
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/error.go
@@ -0,0 +1,51 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// Error returns a matcher that matches non-nil values implementing the
+// built-in error interface for whom the return value of Error() matches the
+// supplied matcher.
+//
+// For example:
+//
+//     err := errors.New("taco burrito")
+//
+//     Error(Equals("taco burrito"))  // matches err
+//     Error(HasSubstr("taco"))       // matches err
+//     Error(HasSubstr("enchilada"))  // doesn't match err
+//
+func Error(m Matcher) Matcher {
+	return &errorMatcher{m}
+}
+
+type errorMatcher struct {
+	wrappedMatcher Matcher
+}
+
+func (m *errorMatcher) Description() string {
+	return "error " + m.wrappedMatcher.Description()
+}
+
+func (m *errorMatcher) Matches(c interface{}) error {
+	// Make sure that c is an error.
+	e, ok := c.(error)
+	if !ok {
+		return NewFatalError("which is not an error")
+	}
+
+	// Pass on the error text to the wrapped matcher.
+	return m.wrappedMatcher.Matches(e.Error())
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go
new file mode 100644
index 00000000..4b9d103a
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go
@@ -0,0 +1,39 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// GreaterOrEqual returns a matcher that matches integer, floating point, or
+// strings values v such that v >= x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// GreaterOrEqual will panic.
+func GreaterOrEqual(x interface{}) Matcher {
+	desc := fmt.Sprintf("greater than or equal to %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("greater than or equal to \"%s\"", x)
+	}
+
+	return transformDescription(Not(LessThan(x)), desc)
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go
new file mode 100644
index 00000000..3eef3217
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go
@@ -0,0 +1,39 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// GreaterThan returns a matcher that matches integer, floating point, or
+// strings values v such that v > x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// GreaterThan will panic.
+func GreaterThan(x interface{}) Matcher {
+	desc := fmt.Sprintf("greater than %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("greater than \"%s\"", x)
+	}
+
+	return transformDescription(Not(LessOrEqual(x)), desc)
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as.go
new file mode 100644
index 00000000..3b286f73
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as.go
@@ -0,0 +1,37 @@
+// Copyright 2015 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// HasSameTypeAs returns a matcher that matches values with exactly the same
+// type as the supplied prototype.
+func HasSameTypeAs(p interface{}) Matcher {
+	expected := reflect.TypeOf(p)
+	pred := func(c interface{}) error {
+		actual := reflect.TypeOf(c)
+		if actual != expected {
+			return fmt.Errorf("which has type %v", actual)
+		}
+
+		return nil
+	}
+
+	return NewMatcher(pred, fmt.Sprintf("has type %v", expected))
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/has_substr.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/has_substr.go
new file mode 100644
index 00000000..bf5bd6ae
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/has_substr.go
@@ -0,0 +1,46 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// HasSubstr returns a matcher that matches strings containing s as a
+// substring.
+func HasSubstr(s string) Matcher {
+	return NewMatcher(
+		func(c interface{}) error { return hasSubstr(s, c) },
+		fmt.Sprintf("has substring \"%s\"", s))
+}
+
+func hasSubstr(needle string, c interface{}) error {
+	v := reflect.ValueOf(c)
+	if v.Kind() != reflect.String {
+		return NewFatalError("which is not a string")
+	}
+
+	// Perform the substring search.
+	haystack := v.String()
+	if strings.Contains(haystack, needle) {
+		return nil
+	}
+
+	return errors.New("")
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/identical_to.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/identical_to.go
new file mode 100644
index 00000000..ae6460ed
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/identical_to.go
@@ -0,0 +1,134 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+// Is the type comparable according to the definition here?
+//
+//     http://weekly.golang.org/doc/go_spec.html#Comparison_operators
+//
+func isComparable(t reflect.Type) bool {
+	switch t.Kind() {
+	case reflect.Array:
+		return isComparable(t.Elem())
+
+	case reflect.Struct:
+		for i := 0; i < t.NumField(); i++ {
+			if !isComparable(t.Field(i).Type) {
+				return false
+			}
+		}
+
+		return true
+
+	case reflect.Slice, reflect.Map, reflect.Func:
+		return false
+	}
+
+	return true
+}
+
+// Should the supplied type be allowed as an argument to IdenticalTo?
+func isLegalForIdenticalTo(t reflect.Type) (bool, error) {
+	// Allow the zero type.
+	if t == nil {
+		return true, nil
+	}
+
+	// Reference types are always okay; we compare pointers.
+	switch t.Kind() {
+	case reflect.Slice, reflect.Map, reflect.Func, reflect.Chan:
+		return true, nil
+	}
+
+	// Reject other non-comparable types.
+	if !isComparable(t) {
+		return false, errors.New(fmt.Sprintf("%v is not comparable", t))
+	}
+
+	return true, nil
+}
+
+// IdenticalTo(x) returns a matcher that matches values v with type identical
+// to x such that:
+//
+//  1. If v and x are of a reference type (slice, map, function, channel), then
+//     they are either both nil or are references to the same object.
+//
+//  2. Otherwise, if v and x are not of a reference type but have a valid type,
+//     then v == x.
+//
+// If v and x are both the invalid type (which results from the predeclared nil
+// value, or from nil interface variables), then the matcher is satisfied.
+//
+// This function will panic if x is of a value type that is not comparable. For
+// example, x cannot be an array of functions.
+func IdenticalTo(x interface{}) Matcher {
+	t := reflect.TypeOf(x)
+
+	// Reject illegal arguments.
+	if ok, err := isLegalForIdenticalTo(t); !ok {
+		panic("IdenticalTo: " + err.Error())
+	}
+
+	return &identicalToMatcher{x}
+}
+
+type identicalToMatcher struct {
+	x interface{}
+}
+
+func (m *identicalToMatcher) Description() string {
+	t := reflect.TypeOf(m.x)
+	return fmt.Sprintf("identical to <%v> %v", t, m.x)
+}
+
+func (m *identicalToMatcher) Matches(c interface{}) error {
+	// Make sure the candidate's type is correct.
+	t := reflect.TypeOf(m.x)
+	if ct := reflect.TypeOf(c); t != ct {
+		return NewFatalError(fmt.Sprintf("which is of type %v", ct))
+	}
+
+	// Special case: two values of the invalid type are always identical.
+	if t == nil {
+		return nil
+	}
+
+	// Handle reference types.
+	switch t.Kind() {
+	case reflect.Slice, reflect.Map, reflect.Func, reflect.Chan:
+		xv := reflect.ValueOf(m.x)
+		cv := reflect.ValueOf(c)
+		if xv.Pointer() == cv.Pointer() {
+			return nil
+		}
+
+		return errors.New("which is not an identical reference")
+	}
+
+	// Are the values equal?
+	if m.x == c {
+		return nil
+	}
+
+	return errors.New("")
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go
new file mode 100644
index 00000000..8402cdea
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go
@@ -0,0 +1,41 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// LessOrEqual returns a matcher that matches integer, floating point, or
+// strings values v such that v <= x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// LessOrEqual will panic.
+func LessOrEqual(x interface{}) Matcher {
+	desc := fmt.Sprintf("less than or equal to %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("less than or equal to \"%s\"", x)
+	}
+
+	// Put LessThan last so that its error messages will be used in the event of
+	// failure.
+	return transformDescription(AnyOf(Equals(x), LessThan(x)), desc)
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_than.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_than.go
new file mode 100644
index 00000000..8258e45d
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_than.go
@@ -0,0 +1,152 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+)
+
+// LessThan returns a matcher that matches integer, floating point, or strings
+// values v such that v < x. Comparison is not defined between numeric and
+// string types, but is defined between all integer and floating point types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// LessThan will panic.
+func LessThan(x interface{}) Matcher {
+	v := reflect.ValueOf(x)
+	kind := v.Kind()
+
+	switch {
+	case isInteger(v):
+	case isFloat(v):
+	case kind == reflect.String:
+
+	default:
+		panic(fmt.Sprintf("LessThan: unexpected kind %v", kind))
+	}
+
+	return &lessThanMatcher{v}
+}
+
+type lessThanMatcher struct {
+	limit reflect.Value
+}
+
+func (m *lessThanMatcher) Description() string {
+	// Special case: make it clear that strings are strings.
+	if m.limit.Kind() == reflect.String {
+		return fmt.Sprintf("less than \"%s\"", m.limit.String())
+	}
+
+	return fmt.Sprintf("less than %v", m.limit.Interface())
+}
+
+func compareIntegers(v1, v2 reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(v1) && isSignedInteger(v2):
+		if v1.Int() < v2.Int() {
+			err = nil
+		}
+		return
+
+	case isSignedInteger(v1) && isUnsignedInteger(v2):
+		if v1.Int() < 0 || uint64(v1.Int()) < v2.Uint() {
+			err = nil
+		}
+		return
+
+	case isUnsignedInteger(v1) && isSignedInteger(v2):
+		if v1.Uint() <= math.MaxInt64 && int64(v1.Uint()) < v2.Int() {
+			err = nil
+		}
+		return
+
+	case isUnsignedInteger(v1) && isUnsignedInteger(v2):
+		if v1.Uint() < v2.Uint() {
+			err = nil
+		}
+		return
+	}
+
+	panic(fmt.Sprintf("compareIntegers: %v %v", v1, v2))
+}
+
+func getFloat(v reflect.Value) float64 {
+	switch {
+	case isSignedInteger(v):
+		return float64(v.Int())
+
+	case isUnsignedInteger(v):
+		return float64(v.Uint())
+
+	case isFloat(v):
+		return v.Float()
+	}
+
+	panic(fmt.Sprintf("getFloat: %v", v))
+}
+
+func (m *lessThanMatcher) Matches(c interface{}) (err error) {
+	v1 := reflect.ValueOf(c)
+	v2 := m.limit
+
+	err = errors.New("")
+
+	// Handle strings as a special case.
+	if v1.Kind() == reflect.String && v2.Kind() == reflect.String {
+		if v1.String() < v2.String() {
+			err = nil
+		}
+		return
+	}
+
+	// If we get here, we require that we are dealing with integers or floats.
+	v1Legal := isInteger(v1) || isFloat(v1)
+	v2Legal := isInteger(v2) || isFloat(v2)
+	if !v1Legal || !v2Legal {
+		err = NewFatalError("which is not comparable")
+		return
+	}
+
+	// Handle the various comparison cases.
+	switch {
+	// Both integers
+	case isInteger(v1) && isInteger(v2):
+		return compareIntegers(v1, v2)
+
+	// At least one float32
+	case v1.Kind() == reflect.Float32 || v2.Kind() == reflect.Float32:
+		if float32(getFloat(v1)) < float32(getFloat(v2)) {
+			err = nil
+		}
+		return
+
+	// At least one float64
+	case v1.Kind() == reflect.Float64 || v2.Kind() == reflect.Float64:
+		if getFloat(v1) < getFloat(v2) {
+			err = nil
+		}
+		return
+	}
+
+	// We shouldn't get here.
+	panic(fmt.Sprintf("lessThanMatcher.Matches: Shouldn't get here: %v %v", v1, v2))
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/matcher.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/matcher.go
new file mode 100644
index 00000000..78159a07
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/matcher.go
@@ -0,0 +1,86 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package oglematchers provides a set of matchers useful in a testing or
+// mocking framework. These matchers are inspired by and mostly compatible with
+// Google Test for C++ and Google JS Test.
+//
+// This package is used by github.com/smartystreets/assertions/internal/ogletest and
+// github.com/smartystreets/assertions/internal/oglemock, which may be more directly useful if you're not
+// writing your own testing package or defining your own matchers.
+package oglematchers
+
+// A Matcher is some predicate implicitly defining a set of values that it
+// matches. For example, GreaterThan(17) matches all numeric values greater
+// than 17, and HasSubstr("taco") matches all strings with the substring
+// "taco".
+//
+// Matchers are typically exposed to tests via constructor functions like
+// HasSubstr. In order to implement such a function you can either define your
+// own matcher type or use NewMatcher.
+type Matcher interface {
+	// Check whether the supplied value belongs to the the set defined by the
+	// matcher. Return a non-nil error if and only if it does not.
+	//
+	// The error describes why the value doesn't match. The error text is a
+	// relative clause that is suitable for being placed after the value. For
+	// example, a predicate that matches strings with a particular substring may,
+	// when presented with a numerical value, return the following error text:
+	//
+	//     "which is not a string"
+	//
+	// Then the failure message may look like:
+	//
+	//     Expected: has substring "taco"
+	//     Actual:   17, which is not a string
+	//
+	// If the error is self-apparent based on the description of the matcher, the
+	// error text may be empty (but the error still non-nil). For example:
+	//
+	//     Expected: 17
+	//     Actual:   19
+	//
+	// If you are implementing a new matcher, see also the documentation on
+	// FatalError.
+	Matches(candidate interface{}) error
+
+	// Description returns a string describing the property that values matching
+	// this matcher have, as a verb phrase where the subject is the value. For
+	// example, "is greather than 17" or "has substring "taco"".
+	Description() string
+}
+
+// FatalError is an implementation of the error interface that may be returned
+// from matchers, indicating the error should be propagated. Returning a
+// *FatalError indicates that the matcher doesn't process values of the
+// supplied type, or otherwise doesn't know how to handle the value.
+//
+// For example, if GreaterThan(17) returned false for the value "taco" without
+// a fatal error, then Not(GreaterThan(17)) would return true. This is
+// technically correct, but is surprising and may mask failures where the wrong
+// sort of matcher is accidentally used. Instead, GreaterThan(17) can return a
+// fatal error, which will be propagated by Not().
+type FatalError struct {
+	errorText string
+}
+
+// NewFatalError creates a FatalError struct with the supplied error text.
+func NewFatalError(s string) *FatalError {
+	return &FatalError{s}
+}
+
+func (e *FatalError) Error() string {
+	return e.errorText
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp.go
new file mode 100644
index 00000000..1ed63f30
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp.go
@@ -0,0 +1,69 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"regexp"
+)
+
+// MatchesRegexp returns a matcher that matches strings and byte slices whose
+// contents match the supplied regular expression. The semantics are those of
+// regexp.Match. In particular, that means the match is not implicitly anchored
+// to the ends of the string: MatchesRegexp("bar") will match "foo bar baz".
+func MatchesRegexp(pattern string) Matcher {
+	re, err := regexp.Compile(pattern)
+	if err != nil {
+		panic("MatchesRegexp: " + err.Error())
+	}
+
+	return &matchesRegexpMatcher{re}
+}
+
+type matchesRegexpMatcher struct {
+	re *regexp.Regexp
+}
+
+func (m *matchesRegexpMatcher) Description() string {
+	return fmt.Sprintf("matches regexp \"%s\"", m.re.String())
+}
+
+func (m *matchesRegexpMatcher) Matches(c interface{}) (err error) {
+	v := reflect.ValueOf(c)
+	isString := v.Kind() == reflect.String
+	isByteSlice := v.Kind() == reflect.Slice && v.Elem().Kind() == reflect.Uint8
+
+	err = errors.New("")
+
+	switch {
+	case isString:
+		if m.re.MatchString(v.String()) {
+			err = nil
+		}
+
+	case isByteSlice:
+		if m.re.Match(v.Bytes()) {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not a string or []byte")
+	}
+
+	return
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/new_matcher.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/new_matcher.go
new file mode 100644
index 00000000..c9d8398e
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/new_matcher.go
@@ -0,0 +1,43 @@
+// Copyright 2015 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// Create a matcher with the given description and predicate function, which
+// will be invoked to handle calls to Matchers.
+//
+// Using this constructor may be a convenience over defining your own type that
+// implements Matcher if you do not need any logic in your Description method.
+func NewMatcher(
+	predicate func(interface{}) error,
+	description string) Matcher {
+	return &predicateMatcher{
+		predicate:   predicate,
+		description: description,
+	}
+}
+
+type predicateMatcher struct {
+	predicate   func(interface{}) error
+	description string
+}
+
+func (pm *predicateMatcher) Matches(c interface{}) error {
+	return pm.predicate(c)
+}
+
+func (pm *predicateMatcher) Description() string {
+	return pm.description
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/not.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/not.go
new file mode 100644
index 00000000..623789fe
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/not.go
@@ -0,0 +1,53 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Not returns a matcher that inverts the set of values matched by the wrapped
+// matcher. It does not transform the result for values for which the wrapped
+// matcher returns a fatal error.
+func Not(m Matcher) Matcher {
+	return &notMatcher{m}
+}
+
+type notMatcher struct {
+	wrapped Matcher
+}
+
+func (m *notMatcher) Matches(c interface{}) (err error) {
+	err = m.wrapped.Matches(c)
+
+	// Did the wrapped matcher say yes?
+	if err == nil {
+		return errors.New("")
+	}
+
+	// Did the wrapped matcher return a fatal error?
+	if _, isFatal := err.(*FatalError); isFatal {
+		return err
+	}
+
+	// The wrapped matcher returned a non-fatal error.
+	return nil
+}
+
+func (m *notMatcher) Description() string {
+	return fmt.Sprintf("not(%s)", m.wrapped.Description())
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/panics.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/panics.go
new file mode 100644
index 00000000..d2cfc978
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/panics.go
@@ -0,0 +1,74 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+// Panics matches zero-arg functions which, when invoked, panic with an error
+// that matches the supplied matcher.
+//
+// NOTE(jacobsa): This matcher cannot detect the case where the function panics
+// using panic(nil), by design of the language. See here for more info:
+//
+//     http://goo.gl/9aIQL
+//
+func Panics(m Matcher) Matcher {
+	return &panicsMatcher{m}
+}
+
+type panicsMatcher struct {
+	wrappedMatcher Matcher
+}
+
+func (m *panicsMatcher) Description() string {
+	return "panics with: " + m.wrappedMatcher.Description()
+}
+
+func (m *panicsMatcher) Matches(c interface{}) (err error) {
+	// Make sure c is a zero-arg function.
+	v := reflect.ValueOf(c)
+	if v.Kind() != reflect.Func || v.Type().NumIn() != 0 {
+		err = NewFatalError("which is not a zero-arg function")
+		return
+	}
+
+	// Call the function and check its panic error.
+	defer func() {
+		if e := recover(); e != nil {
+			err = m.wrappedMatcher.Matches(e)
+
+			// Set a clearer error message if the matcher said no.
+			if err != nil {
+				wrappedClause := ""
+				if err.Error() != "" {
+					wrappedClause = ", " + err.Error()
+				}
+
+				err = errors.New(fmt.Sprintf("which panicked with: %v%s", e, wrappedClause))
+			}
+		}
+	}()
+
+	v.Call([]reflect.Value{})
+
+	// If we get here, the function didn't panic.
+	err = errors.New("which didn't panic")
+	return
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/pointee.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/pointee.go
new file mode 100644
index 00000000..c5383f24
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/pointee.go
@@ -0,0 +1,65 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+// Return a matcher that matches non-nil pointers whose pointee matches the
+// wrapped matcher.
+func Pointee(m Matcher) Matcher {
+	return &pointeeMatcher{m}
+}
+
+type pointeeMatcher struct {
+	wrapped Matcher
+}
+
+func (m *pointeeMatcher) Matches(c interface{}) (err error) {
+	// Make sure the candidate is of the appropriate type.
+	cv := reflect.ValueOf(c)
+	if !cv.IsValid() || cv.Kind() != reflect.Ptr {
+		return NewFatalError("which is not a pointer")
+	}
+
+	// Make sure the candidate is non-nil.
+	if cv.IsNil() {
+		return NewFatalError("")
+	}
+
+	// Defer to the wrapped matcher. Fix up empty errors so that failure messages
+	// are more helpful than just printing a pointer for "Actual".
+	pointee := cv.Elem().Interface()
+	err = m.wrapped.Matches(pointee)
+	if err != nil && err.Error() == "" {
+		s := fmt.Sprintf("whose pointee is %v", pointee)
+
+		if _, ok := err.(*FatalError); ok {
+			err = NewFatalError(s)
+		} else {
+			err = errors.New(s)
+		}
+	}
+
+	return err
+}
+
+func (m *pointeeMatcher) Description() string {
+	return fmt.Sprintf("pointee(%s)", m.wrapped.Description())
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go
new file mode 100644
index 00000000..f79d0c03
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go
@@ -0,0 +1,36 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// transformDescription returns a matcher that is equivalent to the supplied
+// one, except that it has the supplied description instead of the one attached
+// to the existing matcher.
+func transformDescription(m Matcher, newDesc string) Matcher {
+	return &transformDescriptionMatcher{newDesc, m}
+}
+
+type transformDescriptionMatcher struct {
+	desc string
+	wrappedMatcher Matcher
+}
+
+func (m *transformDescriptionMatcher) Description() string {
+	return m.desc
+}
+
+func (m *transformDescriptionMatcher) Matches(c interface{}) error {
+	return m.wrappedMatcher.Matches(c)
+}
diff --git a/vendor/github.com/smartystreets/assertions/messages.go b/vendor/github.com/smartystreets/assertions/messages.go
new file mode 100644
index 00000000..ae1a1511
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/messages.go
@@ -0,0 +1,94 @@
+package assertions
+
+const ( // equality
+	shouldHaveBeenEqual             = "Expected: '%v'\nActual:   '%v'\n(Should be equal)"
+	shouldNotHaveBeenEqual          = "Expected     '%v'\nto NOT equal '%v'\n(but it did)!"
+	shouldHaveBeenEqualTypeMismatch = "Expected: '%v' (%T)\nActual:   '%v' (%T)\n(Should be equal, type mismatch)"
+	shouldHaveBeenAlmostEqual       = "Expected '%v' to almost equal '%v' (but it didn't)!"
+	shouldHaveNotBeenAlmostEqual    = "Expected '%v' to NOT almost equal '%v' (but it did)!"
+	shouldHaveResembled             = "Expected: '%#v'\nActual:   '%#v'\n(Should resemble)!"
+	shouldHaveResembledTypeMismatch = "Expected: '%#v' (%T)\nActual:   '%#v' (%T)\n(Should resemble, type mismatch)"
+	shouldNotHaveResembled          = "Expected        '%#v'\nto NOT resemble '%#v'\n(but it did)!"
+	shouldBePointers                = "Both arguments should be pointers "
+	shouldHaveBeenNonNilPointer     = shouldBePointers + "(the %s was %s)!"
+	shouldHavePointedTo             = "Expected '%+v' (address: '%v') and '%+v' (address: '%v') to be the same address (but their weren't)!"
+	shouldNotHavePointedTo          = "Expected '%+v' and '%+v' to be different references (but they matched: '%v')!"
+	shouldHaveBeenNil               = "Expected: nil\nActual:   '%v'"
+	shouldNotHaveBeenNil            = "Expected '%+v' to NOT be nil (but it was)!"
+	shouldHaveBeenTrue              = "Expected: true\nActual:   %v"
+	shouldHaveBeenFalse             = "Expected: false\nActual:   %v"
+	shouldHaveBeenZeroValue         = "'%+v' should have been the zero value" //"Expected: (zero value)\nActual:   %v"
+)
+
+const ( // quantity comparisons
+	shouldHaveBeenGreater            = "Expected '%v' to be greater than '%v' (but it wasn't)!"
+	shouldHaveBeenGreaterOrEqual     = "Expected '%v' to be greater than or equal to '%v' (but it wasn't)!"
+	shouldHaveBeenLess               = "Expected '%v' to be less than '%v' (but it wasn't)!"
+	shouldHaveBeenLessOrEqual        = "Expected '%v' to be less than or equal to '%v' (but it wasn't)!"
+	shouldHaveBeenBetween            = "Expected '%v' to be between '%v' and '%v' (but it wasn't)!"
+	shouldNotHaveBeenBetween         = "Expected '%v' NOT to be between '%v' and '%v' (but it was)!"
+	shouldHaveDifferentUpperAndLower = "The lower and upper bounds must be different values (they were both '%v')."
+	shouldHaveBeenBetweenOrEqual     = "Expected '%v' to be between '%v' and '%v' or equal to one of them (but it wasn't)!"
+	shouldNotHaveBeenBetweenOrEqual  = "Expected '%v' NOT to be between '%v' and '%v' or equal to one of them (but it was)!"
+)
+
+const ( // collections
+	shouldHaveContained            = "Expected the container (%v) to contain: '%v' (but it didn't)!"
+	shouldNotHaveContained         = "Expected the container (%v) NOT to contain: '%v' (but it did)!"
+	shouldHaveContainedKey         = "Expected the %v to contain the key: %v (but it didn't)!"
+	shouldNotHaveContainedKey      = "Expected the %v NOT to contain the key: %v (but it did)!"
+	shouldHaveBeenIn               = "Expected '%v' to be in the container (%v), but it wasn't!"
+	shouldNotHaveBeenIn            = "Expected '%v' NOT to be in the container (%v), but it was!"
+	shouldHaveBeenAValidCollection = "You must provide a valid container (was %v)!"
+	shouldHaveBeenAValidMap        = "You must provide a valid map type (was %v)!"
+	shouldHaveBeenEmpty            = "Expected %+v to be empty (but it wasn't)!"
+	shouldNotHaveBeenEmpty         = "Expected %+v to NOT be empty (but it was)!"
+	shouldHaveBeenAValidInteger    = "You must provide a valid integer (was %v)!"
+	shouldHaveBeenAValidLength     = "You must provide a valid positive integer (was %v)!"
+	shouldHaveHadLength            = "Expected %+v (length: %v) to have length equal to '%v', but it wasn't!"
+)
+
+const ( // strings
+	shouldHaveStartedWith           = "Expected      '%v'\nto start with '%v'\n(but it didn't)!"
+	shouldNotHaveStartedWith        = "Expected          '%v'\nNOT to start with '%v'\n(but it did)!"
+	shouldHaveEndedWith             = "Expected    '%v'\nto end with '%v'\n(but it didn't)!"
+	shouldNotHaveEndedWith          = "Expected        '%v'\nNOT to end with '%v'\n(but it did)!"
+	shouldAllBeStrings              = "All arguments to this assertion must be strings (you provided: %v)."
+	shouldBothBeStrings             = "Both arguments to this assertion must be strings (you provided %v and %v)."
+	shouldBeString                  = "The argument to this assertion must be a string (you provided %v)."
+	shouldHaveContainedSubstring    = "Expected '%s' to contain substring '%s' (but it didn't)!"
+	shouldNotHaveContainedSubstring = "Expected '%s' NOT to contain substring '%s' (but it did)!"
+	shouldHaveBeenBlank             = "Expected '%s' to be blank (but it wasn't)!"
+	shouldNotHaveBeenBlank          = "Expected value to NOT be blank (but it was)!"
+)
+
+const ( // panics
+	shouldUseVoidNiladicFunction = "You must provide a void, niladic function as the first argument!"
+	shouldHavePanickedWith       = "Expected func() to panic with '%v' (but it panicked with '%v')!"
+	shouldHavePanicked           = "Expected func() to panic (but it didn't)!"
+	shouldNotHavePanicked        = "Expected func() NOT to panic (error: '%+v')!"
+	shouldNotHavePanickedWith    = "Expected func() NOT to panic with '%v' (but it did)!"
+)
+
+const ( // type checking
+	shouldHaveBeenA    = "Expected '%v' to be: '%v' (but was: '%v')!"
+	shouldNotHaveBeenA = "Expected '%v' to NOT be: '%v' (but it was)!"
+
+	shouldHaveImplemented             = "Expected: '%v interface support'\nActual:   '%v' does not implement the interface!"
+	shouldNotHaveImplemented          = "Expected         '%v'\nto NOT implement '%v'\n(but it did)!"
+	shouldCompareWithInterfacePointer = "The expected value must be a pointer to an interface type (eg. *fmt.Stringer)"
+	shouldNotBeNilActual              = "The actual value was 'nil' and should be a value or a pointer to a value!"
+)
+
+const ( // time comparisons
+	shouldUseTimes                   = "You must provide time instances as arguments to this assertion."
+	shouldUseTimeSlice               = "You must provide a slice of time instances as the first argument to this assertion."
+	shouldUseDurationAndTime         = "You must provide a duration and a time as arguments to this assertion."
+	shouldHaveHappenedBefore         = "Expected '%v' to happen before '%v' (it happened '%v' after)!"
+	shouldHaveHappenedAfter          = "Expected '%v' to happen after '%v' (it happened '%v' before)!"
+	shouldHaveHappenedBetween        = "Expected '%v' to happen between '%v' and '%v' (it happened '%v' outside threshold)!"
+	shouldNotHaveHappenedOnOrBetween = "Expected '%v' to NOT happen on or between '%v' and '%v' (but it did)!"
+
+	// format params: incorrect-index, previous-index, previous-time, incorrect-index, incorrect-time
+	shouldHaveBeenChronological = "The 'Time' at index [%d] should have happened after the previous one (but it didn't!):\n  [%d]: %s\n  [%d]: %s (see, it happened before!)"
+)
diff --git a/vendor/github.com/smartystreets/assertions/panic.go b/vendor/github.com/smartystreets/assertions/panic.go
new file mode 100644
index 00000000..7e75db17
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/panic.go
@@ -0,0 +1,115 @@
+package assertions
+
+import "fmt"
+
+// ShouldPanic receives a void, niladic function and expects to recover a panic.
+func ShouldPanic(actual interface{}, expected ...interface{}) (message string) {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	action, _ := actual.(func())
+
+	if action == nil {
+		message = shouldUseVoidNiladicFunction
+		return
+	}
+
+	defer func() {
+		recovered := recover()
+		if recovered == nil {
+			message = shouldHavePanicked
+		} else {
+			message = success
+		}
+	}()
+	action()
+
+	return
+}
+
+// ShouldNotPanic receives a void, niladic function and expects to execute the function without any panic.
+func ShouldNotPanic(actual interface{}, expected ...interface{}) (message string) {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	action, _ := actual.(func())
+
+	if action == nil {
+		message = shouldUseVoidNiladicFunction
+		return
+	}
+
+	defer func() {
+		recovered := recover()
+		if recovered != nil {
+			message = fmt.Sprintf(shouldNotHavePanicked, recovered)
+		} else {
+			message = success
+		}
+	}()
+	action()
+
+	return
+}
+
+// ShouldPanicWith receives a void, niladic function and expects to recover a panic with the second argument as the content.
+func ShouldPanicWith(actual interface{}, expected ...interface{}) (message string) {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	action, _ := actual.(func())
+
+	if action == nil {
+		message = shouldUseVoidNiladicFunction
+		return
+	}
+
+	defer func() {
+		recovered := recover()
+		if recovered == nil {
+			message = shouldHavePanicked
+		} else {
+			if equal := ShouldEqual(recovered, expected[0]); equal != success {
+				message = serializer.serialize(expected[0], recovered, fmt.Sprintf(shouldHavePanickedWith, expected[0], recovered))
+			} else {
+				message = success
+			}
+		}
+	}()
+	action()
+
+	return
+}
+
+// ShouldNotPanicWith receives a void, niladic function and expects to recover a panic whose content differs from the second argument.
+func ShouldNotPanicWith(actual interface{}, expected ...interface{}) (message string) {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	action, _ := actual.(func())
+
+	if action == nil {
+		message = shouldUseVoidNiladicFunction
+		return
+	}
+
+	defer func() {
+		recovered := recover()
+		if recovered == nil {
+			message = success
+		} else {
+			if equal := ShouldEqual(recovered, expected[0]); equal == success {
+				message = fmt.Sprintf(shouldNotHavePanickedWith, expected[0])
+			} else {
+				message = success
+			}
+		}
+	}()
+	action()
+
+	return
+}
diff --git a/vendor/github.com/smartystreets/assertions/quantity.go b/vendor/github.com/smartystreets/assertions/quantity.go
new file mode 100644
index 00000000..80789f0c
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/quantity.go
@@ -0,0 +1,141 @@
+package assertions
+
+import (
+	"fmt"
+
+	"github.com/smartystreets/assertions/internal/oglematchers"
+)
+
+// ShouldBeGreaterThan receives exactly two parameters and ensures that the first is greater than the second.
+func ShouldBeGreaterThan(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	if matchError := oglematchers.GreaterThan(expected[0]).Matches(actual); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenGreater, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldBeGreaterThanOrEqualTo receives exactly two parameters and ensures that the first is greater than or equal to the second.
+func ShouldBeGreaterThanOrEqualTo(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if matchError := oglematchers.GreaterOrEqual(expected[0]).Matches(actual); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenGreaterOrEqual, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldBeLessThan receives exactly two parameters and ensures that the first is less than the second.
+func ShouldBeLessThan(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if matchError := oglematchers.LessThan(expected[0]).Matches(actual); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenLess, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldBeLessThan receives exactly two parameters and ensures that the first is less than or equal to the second.
+func ShouldBeLessThanOrEqualTo(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if matchError := oglematchers.LessOrEqual(expected[0]).Matches(actual); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenLess, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldBeBetween receives exactly three parameters: an actual value, a lower bound, and an upper bound.
+// It ensures that the actual value is between both bounds (but not equal to either of them).
+func ShouldBeBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	lower, upper, fail := deriveBounds(expected)
+
+	if fail != success {
+		return fail
+	} else if !isBetween(actual, lower, upper) {
+		return fmt.Sprintf(shouldHaveBeenBetween, actual, lower, upper)
+	}
+	return success
+}
+
+// ShouldNotBeBetween receives exactly three parameters: an actual value, a lower bound, and an upper bound.
+// It ensures that the actual value is NOT between both bounds.
+func ShouldNotBeBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	lower, upper, fail := deriveBounds(expected)
+
+	if fail != success {
+		return fail
+	} else if isBetween(actual, lower, upper) {
+		return fmt.Sprintf(shouldNotHaveBeenBetween, actual, lower, upper)
+	}
+	return success
+}
+func deriveBounds(values []interface{}) (lower interface{}, upper interface{}, fail string) {
+	lower = values[0]
+	upper = values[1]
+
+	if ShouldNotEqual(lower, upper) != success {
+		return nil, nil, fmt.Sprintf(shouldHaveDifferentUpperAndLower, lower)
+	} else if ShouldBeLessThan(lower, upper) != success {
+		lower, upper = upper, lower
+	}
+	return lower, upper, success
+}
+func isBetween(value, lower, upper interface{}) bool {
+	if ShouldBeGreaterThan(value, lower) != success {
+		return false
+	} else if ShouldBeLessThan(value, upper) != success {
+		return false
+	}
+	return true
+}
+
+// ShouldBeBetweenOrEqual receives exactly three parameters: an actual value, a lower bound, and an upper bound.
+// It ensures that the actual value is between both bounds or equal to one of them.
+func ShouldBeBetweenOrEqual(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	lower, upper, fail := deriveBounds(expected)
+
+	if fail != success {
+		return fail
+	} else if !isBetweenOrEqual(actual, lower, upper) {
+		return fmt.Sprintf(shouldHaveBeenBetweenOrEqual, actual, lower, upper)
+	}
+	return success
+}
+
+// ShouldNotBeBetweenOrEqual receives exactly three parameters: an actual value, a lower bound, and an upper bound.
+// It ensures that the actual value is nopt between the bounds nor equal to either of them.
+func ShouldNotBeBetweenOrEqual(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	lower, upper, fail := deriveBounds(expected)
+
+	if fail != success {
+		return fail
+	} else if isBetweenOrEqual(actual, lower, upper) {
+		return fmt.Sprintf(shouldNotHaveBeenBetweenOrEqual, actual, lower, upper)
+	}
+	return success
+}
+
+func isBetweenOrEqual(value, lower, upper interface{}) bool {
+	if ShouldBeGreaterThanOrEqualTo(value, lower) != success {
+		return false
+	} else if ShouldBeLessThanOrEqualTo(value, upper) != success {
+		return false
+	}
+	return true
+}
diff --git a/vendor/github.com/smartystreets/assertions/serializer.go b/vendor/github.com/smartystreets/assertions/serializer.go
new file mode 100644
index 00000000..90ae3e3b
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/serializer.go
@@ -0,0 +1,69 @@
+package assertions
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/smartystreets/assertions/internal/go-render/render"
+)
+
+type Serializer interface {
+	serialize(expected, actual interface{}, message string) string
+	serializeDetailed(expected, actual interface{}, message string) string
+}
+
+type failureSerializer struct{}
+
+func (self *failureSerializer) serializeDetailed(expected, actual interface{}, message string) string {
+	view := FailureView{
+		Message:  message,
+		Expected: render.Render(expected),
+		Actual:   render.Render(actual),
+	}
+	serialized, err := json.Marshal(view)
+	if err != nil {
+		return message
+	}
+	return string(serialized)
+}
+
+func (self *failureSerializer) serialize(expected, actual interface{}, message string) string {
+	view := FailureView{
+		Message:  message,
+		Expected: fmt.Sprintf("%+v", expected),
+		Actual:   fmt.Sprintf("%+v", actual),
+	}
+	serialized, err := json.Marshal(view)
+	if err != nil {
+		return message
+	}
+	return string(serialized)
+}
+
+func newSerializer() *failureSerializer {
+	return &failureSerializer{}
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+// This struct is also declared in github.com/smartystreets/goconvey/convey/reporting.
+// The json struct tags should be equal in both declarations.
+type FailureView struct {
+	Message  string `json:"Message"`
+	Expected string `json:"Expected"`
+	Actual   string `json:"Actual"`
+}
+
+///////////////////////////////////////////////////////
+
+// noopSerializer just gives back the original message. This is useful when we are using
+// the assertions from a context other than the web UI, that requires the JSON structure
+// provided by the failureSerializer.
+type noopSerializer struct{}
+
+func (self *noopSerializer) serialize(expected, actual interface{}, message string) string {
+	return message
+}
+func (self *noopSerializer) serializeDetailed(expected, actual interface{}, message string) string {
+	return message
+}
diff --git a/vendor/github.com/smartystreets/assertions/strings.go b/vendor/github.com/smartystreets/assertions/strings.go
new file mode 100644
index 00000000..dbc3f047
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/strings.go
@@ -0,0 +1,227 @@
+package assertions
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// ShouldStartWith receives exactly 2 string parameters and ensures that the first starts with the second.
+func ShouldStartWith(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	value, valueIsString := actual.(string)
+	prefix, prefixIsString := expected[0].(string)
+
+	if !valueIsString || !prefixIsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	return shouldStartWith(value, prefix)
+}
+func shouldStartWith(value, prefix string) string {
+	if !strings.HasPrefix(value, prefix) {
+		shortval := value
+		if len(shortval) > len(prefix) {
+			shortval = shortval[:len(prefix)] + "..."
+		}
+		return serializer.serialize(prefix, shortval, fmt.Sprintf(shouldHaveStartedWith, value, prefix))
+	}
+	return success
+}
+
+// ShouldNotStartWith receives exactly 2 string parameters and ensures that the first does not start with the second.
+func ShouldNotStartWith(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	value, valueIsString := actual.(string)
+	prefix, prefixIsString := expected[0].(string)
+
+	if !valueIsString || !prefixIsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	return shouldNotStartWith(value, prefix)
+}
+func shouldNotStartWith(value, prefix string) string {
+	if strings.HasPrefix(value, prefix) {
+		if value == "" {
+			value = "<empty>"
+		}
+		if prefix == "" {
+			prefix = "<empty>"
+		}
+		return fmt.Sprintf(shouldNotHaveStartedWith, value, prefix)
+	}
+	return success
+}
+
+// ShouldEndWith receives exactly 2 string parameters and ensures that the first ends with the second.
+func ShouldEndWith(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	value, valueIsString := actual.(string)
+	suffix, suffixIsString := expected[0].(string)
+
+	if !valueIsString || !suffixIsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	return shouldEndWith(value, suffix)
+}
+func shouldEndWith(value, suffix string) string {
+	if !strings.HasSuffix(value, suffix) {
+		shortval := value
+		if len(shortval) > len(suffix) {
+			shortval = "..." + shortval[len(shortval)-len(suffix):]
+		}
+		return serializer.serialize(suffix, shortval, fmt.Sprintf(shouldHaveEndedWith, value, suffix))
+	}
+	return success
+}
+
+// ShouldEndWith receives exactly 2 string parameters and ensures that the first does not end with the second.
+func ShouldNotEndWith(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	value, valueIsString := actual.(string)
+	suffix, suffixIsString := expected[0].(string)
+
+	if !valueIsString || !suffixIsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	return shouldNotEndWith(value, suffix)
+}
+func shouldNotEndWith(value, suffix string) string {
+	if strings.HasSuffix(value, suffix) {
+		if value == "" {
+			value = "<empty>"
+		}
+		if suffix == "" {
+			suffix = "<empty>"
+		}
+		return fmt.Sprintf(shouldNotHaveEndedWith, value, suffix)
+	}
+	return success
+}
+
+// ShouldContainSubstring receives exactly 2 string parameters and ensures that the first contains the second as a substring.
+func ShouldContainSubstring(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	long, longOk := actual.(string)
+	short, shortOk := expected[0].(string)
+
+	if !longOk || !shortOk {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	if !strings.Contains(long, short) {
+		return serializer.serialize(expected[0], actual, fmt.Sprintf(shouldHaveContainedSubstring, long, short))
+	}
+	return success
+}
+
+// ShouldNotContainSubstring receives exactly 2 string parameters and ensures that the first does NOT contain the second as a substring.
+func ShouldNotContainSubstring(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	long, longOk := actual.(string)
+	short, shortOk := expected[0].(string)
+
+	if !longOk || !shortOk {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	if strings.Contains(long, short) {
+		return fmt.Sprintf(shouldNotHaveContainedSubstring, long, short)
+	}
+	return success
+}
+
+// ShouldBeBlank receives exactly 1 string parameter and ensures that it is equal to "".
+func ShouldBeBlank(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+	value, ok := actual.(string)
+	if !ok {
+		return fmt.Sprintf(shouldBeString, reflect.TypeOf(actual))
+	}
+	if value != "" {
+		return serializer.serialize("", value, fmt.Sprintf(shouldHaveBeenBlank, value))
+	}
+	return success
+}
+
+// ShouldNotBeBlank receives exactly 1 string parameter and ensures that it is equal to "".
+func ShouldNotBeBlank(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+	value, ok := actual.(string)
+	if !ok {
+		return fmt.Sprintf(shouldBeString, reflect.TypeOf(actual))
+	}
+	if value == "" {
+		return shouldNotHaveBeenBlank
+	}
+	return success
+}
+
+// ShouldEqualWithout receives exactly 3 string parameters and ensures that the first is equal to the second
+// after removing all instances of the third from the first using strings.Replace(first, third, "", -1).
+func ShouldEqualWithout(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualString, ok1 := actual.(string)
+	expectedString, ok2 := expected[0].(string)
+	replace, ok3 := expected[1].(string)
+
+	if !ok1 || !ok2 || !ok3 {
+		return fmt.Sprintf(shouldAllBeStrings, []reflect.Type{
+			reflect.TypeOf(actual),
+			reflect.TypeOf(expected[0]),
+			reflect.TypeOf(expected[1]),
+		})
+	}
+
+	replaced := strings.Replace(actualString, replace, "", -1)
+	if replaced == expectedString {
+		return ""
+	}
+
+	return fmt.Sprintf("Expected '%s' to equal '%s' but without any '%s' (but it didn't).", actualString, expectedString, replace)
+}
+
+// ShouldEqualTrimSpace receives exactly 2 string parameters and ensures that the first is equal to the second
+// after removing all leading and trailing whitespace using strings.TrimSpace(first).
+func ShouldEqualTrimSpace(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	actualString, valueIsString := actual.(string)
+	_, value2IsString := expected[0].(string)
+
+	if !valueIsString || !value2IsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	actualString = strings.TrimSpace(actualString)
+	return ShouldEqual(actualString, expected[0])
+}
diff --git a/vendor/github.com/smartystreets/assertions/time.go b/vendor/github.com/smartystreets/assertions/time.go
new file mode 100644
index 00000000..7e050261
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/time.go
@@ -0,0 +1,202 @@
+package assertions
+
+import (
+	"fmt"
+	"time"
+)
+
+// ShouldHappenBefore receives exactly 2 time.Time arguments and asserts that the first happens before the second.
+func ShouldHappenBefore(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	expectedTime, secondOk := expected[0].(time.Time)
+
+	if !firstOk || !secondOk {
+		return shouldUseTimes
+	}
+
+	if !actualTime.Before(expectedTime) {
+		return fmt.Sprintf(shouldHaveHappenedBefore, actualTime, expectedTime, actualTime.Sub(expectedTime))
+	}
+
+	return success
+}
+
+// ShouldHappenOnOrBefore receives exactly 2 time.Time arguments and asserts that the first happens on or before the second.
+func ShouldHappenOnOrBefore(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	expectedTime, secondOk := expected[0].(time.Time)
+
+	if !firstOk || !secondOk {
+		return shouldUseTimes
+	}
+
+	if actualTime.Equal(expectedTime) {
+		return success
+	}
+	return ShouldHappenBefore(actualTime, expectedTime)
+}
+
+// ShouldHappenAfter receives exactly 2 time.Time arguments and asserts that the first happens after the second.
+func ShouldHappenAfter(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	expectedTime, secondOk := expected[0].(time.Time)
+
+	if !firstOk || !secondOk {
+		return shouldUseTimes
+	}
+	if !actualTime.After(expectedTime) {
+		return fmt.Sprintf(shouldHaveHappenedAfter, actualTime, expectedTime, expectedTime.Sub(actualTime))
+	}
+	return success
+}
+
+// ShouldHappenOnOrAfter receives exactly 2 time.Time arguments and asserts that the first happens on or after the second.
+func ShouldHappenOnOrAfter(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	expectedTime, secondOk := expected[0].(time.Time)
+
+	if !firstOk || !secondOk {
+		return shouldUseTimes
+	}
+	if actualTime.Equal(expectedTime) {
+		return success
+	}
+	return ShouldHappenAfter(actualTime, expectedTime)
+}
+
+// ShouldHappenBetween receives exactly 3 time.Time arguments and asserts that the first happens between (not on) the second and third.
+func ShouldHappenBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	min, secondOk := expected[0].(time.Time)
+	max, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseTimes
+	}
+
+	if !actualTime.After(min) {
+		return fmt.Sprintf(shouldHaveHappenedBetween, actualTime, min, max, min.Sub(actualTime))
+	}
+	if !actualTime.Before(max) {
+		return fmt.Sprintf(shouldHaveHappenedBetween, actualTime, min, max, actualTime.Sub(max))
+	}
+	return success
+}
+
+// ShouldHappenOnOrBetween receives exactly 3 time.Time arguments and asserts that the first happens between or on the second and third.
+func ShouldHappenOnOrBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	min, secondOk := expected[0].(time.Time)
+	max, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseTimes
+	}
+	if actualTime.Equal(min) || actualTime.Equal(max) {
+		return success
+	}
+	return ShouldHappenBetween(actualTime, min, max)
+}
+
+// ShouldNotHappenOnOrBetween receives exactly 3 time.Time arguments and asserts that the first
+// does NOT happen between or on the second or third.
+func ShouldNotHappenOnOrBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	min, secondOk := expected[0].(time.Time)
+	max, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseTimes
+	}
+	if actualTime.Equal(min) || actualTime.Equal(max) {
+		return fmt.Sprintf(shouldNotHaveHappenedOnOrBetween, actualTime, min, max)
+	}
+	if actualTime.After(min) && actualTime.Before(max) {
+		return fmt.Sprintf(shouldNotHaveHappenedOnOrBetween, actualTime, min, max)
+	}
+	return success
+}
+
+// ShouldHappenWithin receives a time.Time, a time.Duration, and a time.Time (3 arguments)
+// and asserts that the first time.Time happens within or on the duration specified relative to
+// the other time.Time.
+func ShouldHappenWithin(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	tolerance, secondOk := expected[0].(time.Duration)
+	threshold, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseDurationAndTime
+	}
+
+	min := threshold.Add(-tolerance)
+	max := threshold.Add(tolerance)
+	return ShouldHappenOnOrBetween(actualTime, min, max)
+}
+
+// ShouldNotHappenWithin receives a time.Time, a time.Duration, and a time.Time (3 arguments)
+// and asserts that the first time.Time does NOT happen within or on the duration specified relative to
+// the other time.Time.
+func ShouldNotHappenWithin(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	tolerance, secondOk := expected[0].(time.Duration)
+	threshold, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseDurationAndTime
+	}
+
+	min := threshold.Add(-tolerance)
+	max := threshold.Add(tolerance)
+	return ShouldNotHappenOnOrBetween(actualTime, min, max)
+}
+
+// ShouldBeChronological receives a []time.Time slice and asserts that the are
+// in chronological order starting with the first time.Time as the earliest.
+func ShouldBeChronological(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	times, ok := actual.([]time.Time)
+	if !ok {
+		return shouldUseTimeSlice
+	}
+
+	var previous time.Time
+	for i, current := range times {
+		if i > 0 && current.Before(previous) {
+			return fmt.Sprintf(shouldHaveBeenChronological,
+				i, i-1, previous.String(), i, current.String())
+		}
+		previous = current
+	}
+	return ""
+}
diff --git a/vendor/github.com/smartystreets/assertions/type.go b/vendor/github.com/smartystreets/assertions/type.go
new file mode 100644
index 00000000..3fc00f68
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/type.go
@@ -0,0 +1,112 @@
+package assertions
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// ShouldHaveSameTypeAs receives exactly two parameters and compares their underlying types for equality.
+func ShouldHaveSameTypeAs(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	first := reflect.TypeOf(actual)
+	second := reflect.TypeOf(expected[0])
+
+	if equal := ShouldEqual(first, second); equal != success {
+		return serializer.serialize(second, first, fmt.Sprintf(shouldHaveBeenA, actual, second, first))
+	}
+	return success
+}
+
+// ShouldNotHaveSameTypeAs receives exactly two parameters and compares their underlying types for inequality.
+func ShouldNotHaveSameTypeAs(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	first := reflect.TypeOf(actual)
+	second := reflect.TypeOf(expected[0])
+
+	if equal := ShouldEqual(first, second); equal == success {
+		return fmt.Sprintf(shouldNotHaveBeenA, actual, second)
+	}
+	return success
+}
+
+// ShouldImplement receives exactly two parameters and ensures
+// that the first implements the interface type of the second.
+func ShouldImplement(actual interface{}, expectedList ...interface{}) string {
+	if fail := need(1, expectedList); fail != success {
+		return fail
+	}
+
+	expected := expectedList[0]
+	if fail := ShouldBeNil(expected); fail != success {
+		return shouldCompareWithInterfacePointer
+	}
+
+	if fail := ShouldNotBeNil(actual); fail != success {
+		return shouldNotBeNilActual
+	}
+
+	var actualType reflect.Type
+	if reflect.TypeOf(actual).Kind() != reflect.Ptr {
+		actualType = reflect.PtrTo(reflect.TypeOf(actual))
+	} else {
+		actualType = reflect.TypeOf(actual)
+	}
+
+	expectedType := reflect.TypeOf(expected)
+	if fail := ShouldNotBeNil(expectedType); fail != success {
+		return shouldCompareWithInterfacePointer
+	}
+
+	expectedInterface := expectedType.Elem()
+
+	if actualType == nil {
+		return fmt.Sprintf(shouldHaveImplemented, expectedInterface, actual)
+	}
+
+	if !actualType.Implements(expectedInterface) {
+		return fmt.Sprintf(shouldHaveImplemented, expectedInterface, actualType)
+	}
+	return success
+}
+
+// ShouldNotImplement receives exactly two parameters and ensures
+// that the first does NOT implement the interface type of the second.
+func ShouldNotImplement(actual interface{}, expectedList ...interface{}) string {
+	if fail := need(1, expectedList); fail != success {
+		return fail
+	}
+
+	expected := expectedList[0]
+	if fail := ShouldBeNil(expected); fail != success {
+		return shouldCompareWithInterfacePointer
+	}
+
+	if fail := ShouldNotBeNil(actual); fail != success {
+		return shouldNotBeNilActual
+	}
+
+	var actualType reflect.Type
+	if reflect.TypeOf(actual).Kind() != reflect.Ptr {
+		actualType = reflect.PtrTo(reflect.TypeOf(actual))
+	} else {
+		actualType = reflect.TypeOf(actual)
+	}
+
+	expectedType := reflect.TypeOf(expected)
+	if fail := ShouldNotBeNil(expectedType); fail != success {
+		return shouldCompareWithInterfacePointer
+	}
+
+	expectedInterface := expectedType.Elem()
+
+	if actualType.Implements(expectedInterface) {
+		return fmt.Sprintf(shouldNotHaveImplemented, actualType, expectedInterface)
+	}
+	return success
+}