public function testRender($articleId = null, $expectArray = [])
{
/* setup */
$commentForm = new View\CommentForm($this->_registry, $this->_language);
/* actual */
$actual = $commentForm->render($articleId);
/* compare */
$this->assertStringStartsWith($expectArray['start'], $actual);
$this->assertStringEndsWith($expectArray['end'], $actual);
}