html/template: include itself while cloning
template.Clone() initialized template set incorrectly:
it didn't include itself.
* include itself in template set while cloning
* add a test
Fixes #12996
Change-Id: I932530e4f7f1bbebf833e12b000a5ce052bc9223
Reviewed-on: https://go-review.googlesource.com/16104
Reviewed-by: Andrew Gerrand <adg@golang.org>
diff --git a/src/html/template/template_test.go b/src/html/template/template_test.go
new file mode 100644
index 0000000..6f70d67
--- /dev/null
+++ b/src/html/template/template_test.go
@@ -0,0 +1,29 @@
+package template
+
+import (
+ "bytes"
+ "testing"
+)
+
+func TestTemplateClone(t *testing.T) {
+ // https://golang.org/issue/12996
+ orig := New("name")
+ clone, err := orig.Clone()
+ if err != nil {
+ t.Fatal(err)
+ }
+ if len(clone.Templates()) != len(orig.Templates()) {
+ t.Fatalf("Invalid lenth of t.Clone().Templates()")
+ }
+
+ const want = "stuff"
+ parsed := Must(clone.Parse(want))
+ var buf bytes.Buffer
+ err = parsed.Execute(&buf, nil)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if got := buf.String(); got != want {
+ t.Fatalf("got %q; want %q", got, want)
+ }
+}
