class SerializerTest

class SerializerTest extends UnitTestCase {
    
    /**
     * The View instance.
     *
     * @var \Drupal\views\ViewExecutable|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $view;
    
    /**
     * The RestExport display handler.
     *
     * @var \Drupal\rest\Plugin\views\display\RestExport|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $displayHandler;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->view = $this->getMockBuilder(ViewExecutable::class)
            ->disableOriginalConstructor()
            ->getMock();
        // Make the view result empty so we don't have to mock the row plugin render
        // call.
        $this->view->result = [];
        $this->displayHandler = $this->getMockBuilder(RestExport::class)
            ->disableOriginalConstructor()
            ->getMock();
        $this->displayHandler
            ->expects($this->any())
            ->method('getContentType')
            ->willReturn('json');
    }
    
    /**
     * Tests that the symfony serializer receives style plugin from the render() method.
     *
     * @covers ::render
     */
    public function testSerializerReceivesOptions() {
        $mock_serializer = $this->prophesize(SerializerInterface::class);
        // This is the main expectation of the test. We want to make sure the
        // serializer options are passed to the SerializerInterface object.
        $mock_serializer->serialize([], 'json', Argument::that(function ($argument) {
            return isset($argument['views_style_plugin']) && $argument['views_style_plugin'] instanceof Serializer;
        }))
            ->willReturn()
            ->shouldBeCalled();
        $view_serializer_style = new Serializer([], 'dummy_serializer', [], $mock_serializer->reveal(), [
            'json',
            'xml',
        ], [
            'json' => 'serialization',
            'xml' => 'serialization',
        ]);
        $view_serializer_style->options = [
            'formats' => [
                'xml',
                'json',
            ],
        ];
        $view_serializer_style->view = $this->view;
        $view_serializer_style->displayHandler = $this->displayHandler;
        $view_serializer_style->render();
    }

}