class ContainerAwareEventDispatcherTest

class ContainerAwareEventDispatcherTest extends TestCase {
    use ExpectDeprecationTrait;
    
    /* Some pseudo events */
    const PRE_FOO = 'pre.foo';
    const POST_FOO = 'post.foo';
    const PRE_BAR = 'pre.bar';
    const POST_BAR = 'post.bar';
    
    /**
     * @var \Symfony\Component\EventDispatcher\EventDispatcher
     */
    private $dispatcher;
    private $listener;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        $this->dispatcher = $this->createEventDispatcher();
        $this->listener = new TestEventListener();
    }
    
    /**
     * {@inheritdoc}
     */
    protected function tearDown() : void {
        $this->dispatcher = NULL;
        $this->listener = NULL;
    }
    protected function createEventDispatcher() {
        $container = new Container();
        return new ContainerAwareEventDispatcher($container);
    }
    public function testGetListenersWithCallables() : void {
        // When passing in callables exclusively as listeners into the event
        // dispatcher constructor, the event dispatcher must not attempt to
        // resolve any services.
        $container = $this->getMockBuilder(ContainerInterface::class)
            ->getMock();
        $container->expects($this->never())
            ->method($this->anything());
        $firstListener = new CallableClass();
        $secondListener = function () {
        };
        $thirdListener = [
            new TestEventListener(),
            'preFoo',
        ];
        $listeners = [
            'test_event' => [
                0 => [
                    [
                        'callable' => $firstListener,
                    ],
                    [
                        'callable' => $secondListener,
                    ],
                    [
                        'callable' => $thirdListener,
                    ],
                ],
            ],
        ];
        $dispatcher = new ContainerAwareEventDispatcher($container, $listeners);
        $actualListeners = $dispatcher->getListeners();
        $expectedListeners = [
            'test_event' => [
                $firstListener,
                $secondListener,
                $thirdListener,
            ],
        ];
        $this->assertSame($expectedListeners, $actualListeners);
    }
    public function testDispatchWithCallables() : void {
        // When passing in callables exclusively as listeners into the event
        // dispatcher constructor, the event dispatcher must not attempt to
        // resolve any services.
        $container = $this->getMockBuilder(ContainerInterface::class)
            ->getMock();
        $container->expects($this->never())
            ->method($this->anything());
        $firstListener = new CallableClass();
        $secondListener = function () {
        };
        $thirdListener = [
            new TestEventListener(),
            'preFoo',
        ];
        $listeners = [
            'test_event' => [
                0 => [
                    [
                        'callable' => $firstListener,
                    ],
                    [
                        'callable' => $secondListener,
                    ],
                    [
                        'callable' => $thirdListener,
                    ],
                ],
            ],
        ];
        $dispatcher = new ContainerAwareEventDispatcher($container, $listeners);
        $dispatcher->dispatch(new Event(), 'test_event');
        $this->assertTrue($thirdListener[0]->preFooInvoked);
    }
    public function testGetListenersWithServices() : void {
        $container = new ContainerBuilder();
        $container->register('listener_service', TestEventListener::class);
        $listeners = [
            'test_event' => [
                0 => [
                    [
                        'service' => [
                            'listener_service',
                            'preFoo',
                        ],
                    ],
                ],
            ],
        ];
        $dispatcher = new ContainerAwareEventDispatcher($container, $listeners);
        $actualListeners = $dispatcher->getListeners();
        $listenerService = $container->get('listener_service');
        $expectedListeners = [
            'test_event' => [
                [
                    $listenerService,
                    'preFoo',
                ],
            ],
        ];
        $this->assertSame($expectedListeners, $actualListeners);
    }
    
    /**
     * Tests dispatching Symfony events with core's event dispatcher.
     */
    public function testSymfonyEventDispatching() : void {
        $container = new ContainerBuilder();
        $dispatcher = new ContainerAwareEventDispatcher($container, []);
        $dispatcher->dispatch(new GenericEvent());
    }
    public function testDispatchWithServices() : void {
        $container = new ContainerBuilder();
        $container->register('listener_service', TestEventListener::class);
        $listeners = [
            'test_event' => [
                0 => [
                    [
                        'service' => [
                            'listener_service',
                            'preFoo',
                        ],
                    ],
                ],
            ],
        ];
        $dispatcher = new ContainerAwareEventDispatcher($container, $listeners);
        $dispatcher->dispatch(new Event(), 'test_event');
        $listenerService = $container->get('listener_service');
        $this->assertTrue($listenerService->preFooInvoked);
    }
    public function testRemoveService() : void {
        $container = new ContainerBuilder();
        $container->register('listener_service', TestEventListener::class);
        $container->register('other_listener_service', TestEventListener::class);
        $listeners = [
            'test_event' => [
                0 => [
                    [
                        'service' => [
                            'listener_service',
                            'preFoo',
                        ],
                    ],
                    [
                        'service' => [
                            'other_listener_service',
                            'preFoo',
                        ],
                    ],
                ],
            ],
        ];
        $dispatcher = new ContainerAwareEventDispatcher($container, $listeners);
        $listenerService = $container->get('listener_service');
        $dispatcher->removeListener('test_event', [
            $listenerService,
            'preFoo',
        ]);
        // Ensure that other service was not initialized during removal of the
        // listener service.
        $this->assertFalse($container->initialized('other_listener_service'));
        $dispatcher->dispatch(new Event(), 'test_event');
        $this->assertFalse($listenerService->preFooInvoked);
        $otherService = $container->get('other_listener_service');
        $this->assertTrue($otherService->preFooInvoked);
    }
    public function testGetListenerPriorityWithServices() : void {
        $container = new ContainerBuilder();
        $container->register('listener_service', TestEventListener::class);
        $listeners = [
            'test_event' => [
                5 => [
                    [
                        'service' => [
                            'listener_service',
                            'preFoo',
                        ],
                    ],
                ],
            ],
        ];
        $dispatcher = new ContainerAwareEventDispatcher($container, $listeners);
        $listenerService = $container->get('listener_service');
        $actualPriority = $dispatcher->getListenerPriority('test_event', [
            $listenerService,
            'preFoo',
        ]);
        $this->assertSame(5, $actualPriority);
    }
    public function testInitialState() : void {
        $this->assertEquals([], $this->dispatcher
            ->getListeners());
        $this->assertFalse($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->assertFalse($this->dispatcher
            ->hasListeners(self::POST_FOO));
    }
    public function testAddListener() : void {
        $this->dispatcher
            ->addListener('pre.foo', [
            $this->listener,
            'preFoo',
        ]);
        $this->dispatcher
            ->addListener('post.foo', [
            $this->listener,
            'postFoo',
        ]);
        $this->assertTrue($this->dispatcher
            ->hasListeners());
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::POST_FOO));
        $this->assertCount(1, $this->dispatcher
            ->getListeners(self::PRE_FOO));
        $this->assertCount(1, $this->dispatcher
            ->getListeners(self::POST_FOO));
        $this->assertCount(2, $this->dispatcher
            ->getListeners());
    }
    public function testGetListenersSortsByPriority() : void {
        $listener1 = new TestEventListener();
        $listener2 = new TestEventListener();
        $listener3 = new TestEventListener();
        $listener1->name = '1';
        $listener2->name = '2';
        $listener3->name = '3';
        $this->dispatcher
            ->addListener('pre.foo', [
            $listener1,
            'preFoo',
        ], -10);
        $this->dispatcher
            ->addListener('pre.foo', [
            $listener2,
            'preFoo',
        ], 10);
        $this->dispatcher
            ->addListener('pre.foo', [
            $listener3,
            'preFoo',
        ]);
        $expected = [
            [
                $listener2,
                'preFoo',
            ],
            [
                $listener3,
                'preFoo',
            ],
            [
                $listener1,
                'preFoo',
            ],
        ];
        $this->assertSame($expected, $this->dispatcher
            ->getListeners('pre.foo'));
    }
    public function testGetAllListenersSortsByPriority() : void {
        $listener1 = new TestEventListener();
        $listener2 = new TestEventListener();
        $listener3 = new TestEventListener();
        $listener4 = new TestEventListener();
        $listener5 = new TestEventListener();
        $listener6 = new TestEventListener();
        $this->dispatcher
            ->addListener('pre.foo', $listener1, -10);
        $this->dispatcher
            ->addListener('pre.foo', $listener2);
        $this->dispatcher
            ->addListener('pre.foo', $listener3, 10);
        $this->dispatcher
            ->addListener('post.foo', $listener4, -10);
        $this->dispatcher
            ->addListener('post.foo', $listener5);
        $this->dispatcher
            ->addListener('post.foo', $listener6, 10);
        $expected = [
            'pre.foo' => [
                $listener3,
                $listener2,
                $listener1,
            ],
            'post.foo' => [
                $listener6,
                $listener5,
                $listener4,
            ],
        ];
        $this->assertSame($expected, $this->dispatcher
            ->getListeners());
    }
    public function testGetListenerPriority() : void {
        $listener1 = new TestEventListener();
        $listener2 = new TestEventListener();
        $this->dispatcher
            ->addListener('pre.foo', $listener1, -10);
        $this->dispatcher
            ->addListener('pre.foo', $listener2);
        $this->assertSame(-10, $this->dispatcher
            ->getListenerPriority('pre.foo', $listener1));
        $this->assertSame(0, $this->dispatcher
            ->getListenerPriority('pre.foo', $listener2));
        $this->assertNull($this->dispatcher
            ->getListenerPriority('pre.bar', $listener2));
        $this->assertNull($this->dispatcher
            ->getListenerPriority('pre.foo', function () {
        }));
    }
    public function testDispatch() : void {
        $this->dispatcher
            ->addListener('pre.foo', [
            $this->listener,
            'preFoo',
        ]);
        $this->dispatcher
            ->addListener('post.foo', [
            $this->listener,
            'postFoo',
        ]);
        $this->dispatcher
            ->dispatch(new Event(), self::PRE_FOO);
        $this->assertTrue($this->listener->preFooInvoked);
        $this->assertFalse($this->listener->postFooInvoked);
        $this->assertInstanceOf(Event::class, $this->dispatcher
            ->dispatch(new Event(), 'no_event'));
        $this->assertInstanceOf(Event::class, $this->dispatcher
            ->dispatch(new Event(), self::PRE_FOO));
        // Any kind of object can be dispatched, not only instances of Event.
        $this->assertInstanceOf(\stdClass::class, $this->dispatcher
            ->dispatch(new \stdClass(), self::PRE_FOO));
        $event = new Event();
        $return = $this->dispatcher
            ->dispatch($event, self::PRE_FOO);
        $this->assertSame($event, $return);
    }
    public function testDispatchForClosure() : void {
        $invoked = 0;
        $listener = function () use (&$invoked) {
            ++$invoked;
        };
        $this->dispatcher
            ->addListener('pre.foo', $listener);
        $this->dispatcher
            ->addListener('post.foo', $listener);
        $this->dispatcher
            ->dispatch(new Event(), self::PRE_FOO);
        $this->assertEquals(1, $invoked);
    }
    public function testStopEventPropagation() : void {
        $otherListener = new TestEventListener();
        // postFoo() stops the propagation, so only one listener should
        // be executed
        // Manually set priority to enforce $this->listener to be called first
        $this->dispatcher
            ->addListener('post.foo', [
            $this->listener,
            'postFoo',
        ], 10);
        $this->dispatcher
            ->addListener('post.foo', [
            $otherListener,
            'postFoo',
        ]);
        $this->dispatcher
            ->dispatch(new Event(), self::POST_FOO);
        $this->assertTrue($this->listener->postFooInvoked);
        $this->assertFalse($otherListener->postFooInvoked);
    }
    public function testDispatchByPriority() : void {
        $invoked = [];
        $listener1 = function () use (&$invoked) {
            $invoked[] = '1';
        };
        $listener2 = function () use (&$invoked) {
            $invoked[] = '2';
        };
        $listener3 = function () use (&$invoked) {
            $invoked[] = '3';
        };
        $this->dispatcher
            ->addListener('pre.foo', $listener1, -10);
        $this->dispatcher
            ->addListener('pre.foo', $listener2);
        $this->dispatcher
            ->addListener('pre.foo', $listener3, 10);
        $this->dispatcher
            ->dispatch(new Event(), self::PRE_FOO);
        $this->assertEquals([
            '3',
            '2',
            '1',
        ], $invoked);
    }
    public function testRemoveListener() : void {
        $this->dispatcher
            ->addListener('pre.bar', $this->listener);
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::PRE_BAR));
        $this->dispatcher
            ->removeListener('pre.bar', $this->listener);
        $this->assertFalse($this->dispatcher
            ->hasListeners(self::PRE_BAR));
        $this->dispatcher
            ->removeListener('notExists', $this->listener);
    }
    public function testAddSubscriber() : void {
        $eventSubscriber = new TestEventSubscriber();
        $this->dispatcher
            ->addSubscriber($eventSubscriber);
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::POST_FOO));
    }
    public function testAddSubscriberWithPriorities() : void {
        $eventSubscriber = new TestEventSubscriber();
        $this->dispatcher
            ->addSubscriber($eventSubscriber);
        $eventSubscriber = new TestEventSubscriberWithPriorities();
        $this->dispatcher
            ->addSubscriber($eventSubscriber);
        $listeners = $this->dispatcher
            ->getListeners('pre.foo');
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->assertCount(2, $listeners);
        $this->assertInstanceOf(TestEventSubscriberWithPriorities::class, $listeners[0][0]);
    }
    public function testAddSubscriberWithMultipleListeners() : void {
        $eventSubscriber = new TestEventSubscriberWithMultipleListeners();
        $this->dispatcher
            ->addSubscriber($eventSubscriber);
        $listeners = $this->dispatcher
            ->getListeners('pre.foo');
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->assertCount(2, $listeners);
        $this->assertEquals('preFoo2', $listeners[0][1]);
    }
    public function testRemoveSubscriber() : void {
        $eventSubscriber = new TestEventSubscriber();
        $this->dispatcher
            ->addSubscriber($eventSubscriber);
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::POST_FOO));
        $this->dispatcher
            ->removeSubscriber($eventSubscriber);
        $this->assertFalse($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->assertFalse($this->dispatcher
            ->hasListeners(self::POST_FOO));
    }
    public function testRemoveSubscriberWithPriorities() : void {
        $eventSubscriber = new TestEventSubscriberWithPriorities();
        $this->dispatcher
            ->addSubscriber($eventSubscriber);
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->dispatcher
            ->removeSubscriber($eventSubscriber);
        $this->assertFalse($this->dispatcher
            ->hasListeners(self::PRE_FOO));
    }
    public function testRemoveSubscriberWithMultipleListeners() : void {
        $eventSubscriber = new TestEventSubscriberWithMultipleListeners();
        $this->dispatcher
            ->addSubscriber($eventSubscriber);
        $this->assertTrue($this->dispatcher
            ->hasListeners(self::PRE_FOO));
        $this->assertCount(2, $this->dispatcher
            ->getListeners(self::PRE_FOO));
        $this->dispatcher
            ->removeSubscriber($eventSubscriber);
        $this->assertFalse($this->dispatcher
            ->hasListeners(self::PRE_FOO));
    }
    public function testEventReceivesTheDispatcherInstanceAsArgument() : void {
        $listener = new TestWithDispatcher();
        $this->dispatcher
            ->addListener('test', [
            $listener,
            'foo',
        ]);
        $this->assertNull($listener->name);
        $this->assertNull($listener->dispatcher);
        $this->dispatcher
            ->dispatch(new Event(), 'test');
        $this->assertEquals('test', $listener->name);
        $this->assertSame($this->dispatcher, $listener->dispatcher);
    }
    
    /**
     * @see https://bugs.php.net/bug.php?id=62976
     *
     * This bug affects:
     *  - The PHP 5.3 branch for versions < 5.3.18
     *  - The PHP 5.4 branch for versions < 5.4.8
     *  - The PHP 5.5 branch is not affected
     */
    public function testWorkaroundForPhpBug62976() : void {
        $dispatcher = $this->createEventDispatcher();
        $dispatcher->addListener('bug.62976', new CallableClass());
        $dispatcher->removeListener('bug.62976', function () {
        });
        $this->assertTrue($dispatcher->hasListeners('bug.62976'));
    }
    public function testHasListenersWhenAddedCallbackListenerIsRemoved() : void {
        $listener = function () {
        };
        $this->dispatcher
            ->addListener('foo', $listener);
        $this->dispatcher
            ->removeListener('foo', $listener);
        $this->assertFalse($this->dispatcher
            ->hasListeners());
    }
    public function testGetListenersWhenAddedCallbackListenerIsRemoved() : void {
        $listener = function () {
        };
        $this->dispatcher
            ->addListener('foo', $listener);
        $this->dispatcher
            ->removeListener('foo', $listener);
        $this->assertSame([], $this->dispatcher
            ->getListeners());
    }
    public function testHasListenersWithoutEventsReturnsFalseAfterHasListenersWithEventHasBeenCalled() : void {
        $this->assertFalse($this->dispatcher
            ->hasListeners('foo'));
        $this->assertFalse($this->dispatcher
            ->hasListeners());
    }
    public function testHasListenersIsLazy() : void {
        $called = 0;
        $listener = [
            function () use (&$called) {
                ++$called;
            },
            'onFoo',
        ];
        $this->dispatcher
            ->addListener('foo', $listener);
        $this->assertTrue($this->dispatcher
            ->hasListeners());
        $this->assertTrue($this->dispatcher
            ->hasListeners('foo'));
        $this->assertSame(0, $called);
    }
    public function testDispatchLazyListener() : void {
        $called = 0;
        $factory = function () use (&$called) {
            ++$called;
            return new TestWithDispatcher();
        };
        $this->dispatcher
            ->addListener('foo', [
            $factory,
            'foo',
        ]);
        $this->assertSame(0, $called);
        $this->dispatcher
            ->dispatch(new Event(), 'foo');
        $this->dispatcher
            ->dispatch(new Event(), 'foo');
        $this->assertSame(1, $called);
    }
    public function testRemoveFindsLazyListeners() : void {
        $test = new TestWithDispatcher();
        $factory = function () use ($test) {
            return $test;
        };
        $this->dispatcher
            ->addListener('foo', [
            $factory,
            'foo',
        ]);
        $this->assertTrue($this->dispatcher
            ->hasListeners('foo'));
        $this->dispatcher
            ->removeListener('foo', [
            $test,
            'foo',
        ]);
        $this->assertFalse($this->dispatcher
            ->hasListeners('foo'));
        $this->dispatcher
            ->addListener('foo', [
            $test,
            'foo',
        ]);
        $this->assertTrue($this->dispatcher
            ->hasListeners('foo'));
        $this->dispatcher
            ->removeListener('foo', [
            $factory,
            'foo',
        ]);
        $this->assertFalse($this->dispatcher
            ->hasListeners('foo'));
    }
    public function testPriorityFindsLazyListeners() : void {
        $test = new TestWithDispatcher();
        $factory = function () use ($test) {
            return $test;
        };
        $this->dispatcher
            ->addListener('foo', [
            $factory,
            'foo',
        ], 3);
        $this->assertSame(3, $this->dispatcher
            ->getListenerPriority('foo', [
            $test,
            'foo',
        ]));
        $this->dispatcher
            ->removeListener('foo', [
            $factory,
            'foo',
        ]);
        $this->dispatcher
            ->addListener('foo', [
            $test,
            'foo',
        ], 5);
        $this->assertSame(5, $this->dispatcher
            ->getListenerPriority('foo', [
            $factory,
            'foo',
        ]));
    }
    public function testGetLazyListeners() : void {
        $test = new TestWithDispatcher();
        $factory = function () use ($test) {
            return $test;
        };
        $this->dispatcher
            ->addListener('foo', [
            $factory,
            'foo',
        ], 3);
        $this->assertSame([
            [
                $test,
                'foo',
            ],
        ], $this->dispatcher
            ->getListeners('foo'));
        $this->dispatcher
            ->removeListener('foo', [
            $test,
            'foo',
        ]);
        $this->dispatcher
            ->addListener('bar', [
            $factory,
            'foo',
        ], 3);
        $this->assertSame([
            'bar' => [
                [
                    $test,
                    'foo',
                ],
            ],
        ], $this->dispatcher
            ->getListeners());
    }

}