facebook / php-graph-sdk

        $this->assertInstanceOf(\DateTime::class, $graphNodeAsArray['date']);

    }

    public function testReturningACollectionAsJasonWillSafelyRepresentDateTimes()

    {

        $graphNode = new GraphNode([

            'id' => '123',

            'date' => new \DateTime('2014-07-15T03:44:53+0000'),

        ]);

        $graphNodeAsString = $graphNode->asJson();

        $this->assertEquals('{"id":"123","date":"2014-07-15T03:44:53+0000"}', $graphNodeAsString);

    }

    public function testAnExistingPropertyCanBeAccessed()

    {

        $this->assertEquals(['foo', 'bar'], $graphNode->asArray());

    }

    public function testACollectionCanBeConvertedToProperJson()

    {

        $graphNode = new GraphNode(['foo', 'bar', 123]);

        $graphNodeAsString = $graphNode->asJson();

        $this->assertEquals('["foo","bar",123]', $graphNodeAsString);

    }

    public function testACollectionCanBeCounted()

    {