facebook / facebook-php-sdk-v4

        $this->assertFalse($shouldFail, 'Expected the invalid ISO 8601 format to fail.');

    }

    public function testATimeStampCanBeConvertedToADateTimeObject()

    {

        $someTimeStampFromGraph = 1405547020;

        $graphNode = new GraphNode();

        $dateTime = $graphNode->castToDateTime($someTimeStampFromGraph);

        $prettyDate = $dateTime->format(\DateTime::RFC1036);

        $timeStamp = $dateTime->getTimestamp();

        $this->assertInstanceOf('DateTime', $dateTime);

        $this->assertEquals('Wed, 16 Jul 14 23:43:40 +0200', $prettyDate);

        $this->assertEquals(1405547020, $timeStamp);

    }

    public function testAGraphDateStringCanBeConvertedToADateTimeObject()

    {

        $this->assertEquals(1405547020, $timeStamp);

    }

    public function testAGraphDateStringCanBeConvertedToADateTimeObject()

    {

        $someDateStringFromGraph = '2014-07-15T03:44:53+0000';

        $graphNode = new GraphNode();

        $dateTime = $graphNode->castToDateTime($someDateStringFromGraph);

        $prettyDate = $dateTime->format(\DateTime::RFC1036);

        $timeStamp = $dateTime->getTimestamp();

        $this->assertInstanceOf('DateTime', $dateTime);

        $this->assertEquals('Tue, 15 Jul 14 03:44:53 +0000', $prettyDate);

        $this->assertEquals(1405395893, $timeStamp);

    }

    public function testUncastingAGraphNodeWillUncastTheDateTimeObject()

    {