refactor(codegen): generalize comment replacement logic

Replace the specific RequireComment method with a more flexible Replace
method that allows arbitrary string replacements in comments, while
preserving "*assert.CollectT". Update template usage to leverage the new
Replace method for generating require comments.

Signed-off-by: a2not <[email protected]>

Author: a2not

_codegen/main.go

@@ -296,15 +296,15 @@ func (f *testFunc) CommentWithoutT(receiver string) string {
 	return strings.Replace(f.Comment(), search, replace, -1)
 }
 
-func (f *testFunc) RequireComment(comment string) string {
-	// replace "assert." with "require.", but preserve "*assert.CollectT"
+func (f *testFunc) Replace(comment, search, replace string) string {
+	// replace strings, but preserve "*assert.CollectT"
 	const (
 		assertCollectT            = "*assert.CollectT"
 		assertCollectTPlaceholder = "__COLLECT_T_PLACEHOLDER__"
 	)
 
 	protected := strings.ReplaceAll(comment, assertCollectT, assertCollectTPlaceholder)
-	result := strings.ReplaceAll(protected, "assert.", "require.")
+	result := strings.ReplaceAll(protected, search, replace)
 	return strings.ReplaceAll(result, assertCollectTPlaceholder, assertCollectT)
 }
 

require/require.go.tmpl

@@ -1,4 +1,4 @@
-{{ .RequireComment .Comment }}
+{{ .Replace .Comment "assert." "require." }}
 func {{.DocInfo.Name}}(t TestingT, {{.Params}}) {
 	if h, ok := t.(tHelper); ok { h.Helper() }
 	if assert.{{.DocInfo.Name}}(t, {{.ForwardedParams}}) { return }