Improve user experience for outdated comments (#29050)

Try to improve #28949

1. Make `ctx.Data["ShowOutdatedComments"] = true` by default: it brings
consistent user experience, and sometimes the "outdated (source
changed)" comments are still valuable.
2. Show a friendly message if the comment won't show, then the end users
won't fell that "the comment disappears" (it is the special case when
`ShowOutdatedComments = false`)

1 files changed, 13 insertions, 2 deletions

diff --git a/modules/contexttest/context_tests.go b/modules/contexttest/context_tests.go
index 9ca028bb6e..c9bacf259f 100644
--- a/modules/contexttest/context_tests.go
+++ b/modules/contexttest/context_tests.go
@@ -40,8 +40,19 @@ func mockRequest(t *testing.T, reqPath string) *http.Request {
 	return req
 }
 
+type MockContextOption struct {
+	Render context.Render
+}
+
 // MockContext mock context for unit tests
-func MockContext(t *testing.T, reqPath string) (*context.Context, *httptest.ResponseRecorder) {
+func MockContext(t *testing.T, reqPath string, opts ...MockContextOption) (*context.Context, *httptest.ResponseRecorder) {
+	var opt MockContextOption
+	if len(opts) > 0 {
+		opt = opts[0]
+	}
+	if opt.Render == nil {
+		opt.Render = &MockRender{}
+	}
 	resp := httptest.NewRecorder()
 	req := mockRequest(t, reqPath)
 	base, baseCleanUp := context.NewBaseContext(resp, req)
@@ -49,7 +60,7 @@ func MockContext(t *testing.T, reqPath string) (*context.Context, *httptest.Resp
 	base.Data = middleware.GetContextData(req.Context())
 	base.Locale = &translation.MockLocale{}
 
-	ctx := context.NewWebContext(base, &MockRender{}, nil)
+	ctx := context.NewWebContext(base, opt.Render, nil)
 
 	chiCtx := chi.NewRouteContext()
 	ctx.Base.AppendContextValue(chi.RouteCtxKey, chiCtx)