go.blog/cover: new article about test coverage

R=adg
https://golang.org/cl/14566048

1 files changed, 22 insertions, 0 deletions

diff --git a/content/cover/pkg_test.go b/content/cover/pkg_test.go
new file mode 100644
index 0000000..8bf4b0c
--- /dev/null
+++ b/content/cover/pkg_test.go
@@ -0,0 +1,22 @@
+package size
+
+import "testing"
+
+type Test struct {
+	in  int
+	out string
+}
+
+var tests = []Test{
+	{-1, "negative"},
+	{5, "small"},
+}
+
+func TestSize(t *testing.T) {
+	for i, test := range tests {
+		size := Size(test.in)
+		if size != test.out {
+			t.Errorf("#%d: Size(%d)=%s; want %s", i, test.in, size, test.out)
+		}
+	}
+}