public function itBehavesLikeMustacheRenderer()
 {
     $mustache_renderer = new MustacheRenderer($this->templates_dir);
     $mustache_output = $mustache_renderer->renderToString('valid-template', $this->presenter);
     $debug_output = $this->renderer->renderToString('valid-template', $this->presenter);
     $this->assertEqual($debug_output, $mustache_output);
 }
 private function fetchFollowUps()
 {
     $changesets = $this->getFollowupsContent($this->artifact);
     $presenter = new Tracker_Artifact_Presenter_FollowUpCommentsPresenter($changesets);
     return $this->renderer->renderToString('follow-ups', $presenter);
 }