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// Copyright 2020 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package testutil
import (
"encoding/json"
"flag"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"runtime"
"testing"
"github.com/stretchr/testify/assert"
)
var updateRegex = flag.String("update", "", "Update testdata of tests matching the given regex")
// Update returns true if update regex matches given test name.
func Update(name string) bool {
if updateRegex == nil || *updateRegex == "" {
return false
}
return regexp.MustCompile(*updateRegex).MatchString(name)
}
// AssertGolden compares what's got and what's in the golden file. It updates
// the golden file on-demand. It does nothing when the runtime is "windows".
func AssertGolden(t testing.TB, path string, update bool, got interface{}) {
if runtime.GOOS == "windows" {
t.Skip("Skipping testing on Windows")
return
}
t.Helper()
data := marshal(t, got)
if update {
err := os.MkdirAll(filepath.Dir(path), os.ModePerm)
if err != nil {
t.Fatalf("create directories for golden file %q: %v", path, err)
}
err = ioutil.WriteFile(path, data, 0640)
if err != nil {
t.Fatalf("update golden file %q: %v", path, err)
}
}
golden, err := ioutil.ReadFile(path)
if err != nil {
t.Fatalf("read golden file %q: %v", path, err)
}
assert.Equal(t, string(golden), string(data))
}
func marshal(t testing.TB, v interface{}) []byte {
t.Helper()
switch v2 := v.(type) {
case string:
return []byte(v2)
case []byte:
return v2
default:
data, err := json.MarshalIndent(v, "", " ")
if err != nil {
t.Fatal(err)
}
return data
}
}
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