Google\Cloud\Tests\Snippets\PubSub\MessageTest::testPublishTime PHP Method

    public function testPublishTime()
    {
        $snippet = $this->snippetFromMethod(Message::class, 'publishTime');
        $snippet->addLocal('message', $this->message);
        $res = $snippet->invoke('time');
        $this->assertEquals($this->msg['publishTime'], $res->returnVal()->format('c'));
    }