tpl/transform: Add a comments test for Remarshal

See #4521

diff --git a/tpl/transform/remarshal_test.go b/tpl/transform/remarshal_test.go
index 78980e62cd21b6c5f3cebb4046eb97d3eeae0644..5e3ed8b34cae6f3b8247825890e471324ecee6f1 100644 (file)
--- a/tpl/transform/remarshal_test.go
+++ b/tpl/transform/remarshal_test.go
@@ -108,6 +108,48 @@ title: Test Metadata
 
 }
 
+func TestRemarshalComments(t *testing.T) {
+       t.Parallel()
+
+       ns := New(newDeps(viper.New()))
+       assert := require.New(t)
+
+       input := `
+Hugo = "Rules"
+               
+# It really does!
+
+[m]
+# A comment
+a = "b"
+
+`
+
+       expected := `
+Hugo = "Rules"
+               
+[m]
+  a = "b"
+`
+
+       for _, format := range []string{"json", "yaml", "toml"} {
+               fromTo := fmt.Sprintf("%s => %s", "toml", format)
+
+               converted := input
+               var err error
+               // Do a round-trip conversion
+               for _, toFormat := range []string{format, "toml"} {
+                       converted, err = ns.Remarshal(toFormat, converted)
+                       assert.NoError(err, fromTo)
+               }
+
+               diff := helpers.DiffStrings(expected, converted)
+               if len(diff) > 0 {
+                       t.Fatalf("[%s] Expected \n%v\ngot\n%v\ndiff:\n%v\n", fromTo, expected, converted, diff)
+               }
+       }
+}
+
 func TestTestRemarshalError(t *testing.T) {
        t.Parallel()