370 lines
13 KiB
PHP
370 lines
13 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\EventDispatcher\Tests;
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use Symfony\Component\EventDispatcher\Event;
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use Symfony\Component\EventDispatcher\EventSubscriberInterface;
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abstract class AbstractEventDispatcherTest extends \PHPUnit_Framework_TestCase
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{
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/* Some pseudo events */
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const preFoo = 'pre.foo';
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const postFoo = 'post.foo';
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const preBar = 'pre.bar';
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const postBar = 'post.bar';
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/**
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* @var EventDispatcher
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*/
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private $dispatcher;
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private $listener;
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protected function setUp()
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{
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$this->dispatcher = $this->createEventDispatcher();
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$this->listener = new TestEventListener();
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}
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protected function tearDown()
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{
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$this->dispatcher = null;
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$this->listener = null;
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}
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abstract protected function createEventDispatcher();
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public function testInitialState()
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{
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$this->assertEquals(array(), $this->dispatcher->getListeners());
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$this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
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$this->assertFalse($this->dispatcher->hasListeners(self::postFoo));
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}
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public function testAddListener()
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{
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$this->dispatcher->addListener('pre.foo', array($this->listener, 'preFoo'));
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$this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'));
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$this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
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$this->assertTrue($this->dispatcher->hasListeners(self::postFoo));
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$this->assertCount(1, $this->dispatcher->getListeners(self::preFoo));
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$this->assertCount(1, $this->dispatcher->getListeners(self::postFoo));
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$this->assertCount(2, $this->dispatcher->getListeners());
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}
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public function testGetListenersSortsByPriority()
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{
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$listener1 = new TestEventListener();
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$listener2 = new TestEventListener();
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$listener3 = new TestEventListener();
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$listener1->name = '1';
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$listener2->name = '2';
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$listener3->name = '3';
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$this->dispatcher->addListener('pre.foo', array($listener1, 'preFoo'), -10);
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$this->dispatcher->addListener('pre.foo', array($listener2, 'preFoo'), 10);
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$this->dispatcher->addListener('pre.foo', array($listener3, 'preFoo'));
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$expected = array(
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array($listener2, 'preFoo'),
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array($listener3, 'preFoo'),
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array($listener1, 'preFoo'),
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);
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$this->assertSame($expected, $this->dispatcher->getListeners('pre.foo'));
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}
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public function testGetAllListenersSortsByPriority()
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{
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$listener1 = new TestEventListener();
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$listener2 = new TestEventListener();
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$listener3 = new TestEventListener();
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$listener4 = new TestEventListener();
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$listener5 = new TestEventListener();
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$listener6 = new TestEventListener();
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$this->dispatcher->addListener('pre.foo', $listener1, -10);
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$this->dispatcher->addListener('pre.foo', $listener2);
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$this->dispatcher->addListener('pre.foo', $listener3, 10);
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$this->dispatcher->addListener('post.foo', $listener4, -10);
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$this->dispatcher->addListener('post.foo', $listener5);
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$this->dispatcher->addListener('post.foo', $listener6, 10);
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$expected = array(
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'pre.foo' => array($listener3, $listener2, $listener1),
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'post.foo' => array($listener6, $listener5, $listener4),
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);
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$this->assertSame($expected, $this->dispatcher->getListeners());
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}
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public function testDispatch()
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{
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$this->dispatcher->addListener('pre.foo', array($this->listener, 'preFoo'));
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$this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'));
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$this->dispatcher->dispatch(self::preFoo);
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$this->assertTrue($this->listener->preFooInvoked);
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$this->assertFalse($this->listener->postFooInvoked);
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$this->assertInstanceOf('Symfony\Component\EventDispatcher\Event', $this->dispatcher->dispatch('noevent'));
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$this->assertInstanceOf('Symfony\Component\EventDispatcher\Event', $this->dispatcher->dispatch(self::preFoo));
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$event = new Event();
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$return = $this->dispatcher->dispatch(self::preFoo, $event);
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$this->assertEquals('pre.foo', $event->getName());
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$this->assertSame($event, $return);
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}
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public function testDispatchForClosure()
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{
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$invoked = 0;
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$listener = function () use (&$invoked) {
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$invoked++;
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};
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$this->dispatcher->addListener('pre.foo', $listener);
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$this->dispatcher->addListener('post.foo', $listener);
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$this->dispatcher->dispatch(self::preFoo);
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$this->assertEquals(1, $invoked);
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}
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public function testStopEventPropagation()
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{
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$otherListener = new TestEventListener();
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// postFoo() stops the propagation, so only one listener should
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// be executed
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// Manually set priority to enforce $this->listener to be called first
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$this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'), 10);
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$this->dispatcher->addListener('post.foo', array($otherListener, 'preFoo'));
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$this->dispatcher->dispatch(self::postFoo);
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$this->assertTrue($this->listener->postFooInvoked);
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$this->assertFalse($otherListener->postFooInvoked);
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}
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public function testDispatchByPriority()
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{
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$invoked = array();
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$listener1 = function () use (&$invoked) {
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$invoked[] = '1';
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};
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$listener2 = function () use (&$invoked) {
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$invoked[] = '2';
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};
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$listener3 = function () use (&$invoked) {
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$invoked[] = '3';
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};
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$this->dispatcher->addListener('pre.foo', $listener1, -10);
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$this->dispatcher->addListener('pre.foo', $listener2);
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$this->dispatcher->addListener('pre.foo', $listener3, 10);
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$this->dispatcher->dispatch(self::preFoo);
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$this->assertEquals(array('3', '2', '1'), $invoked);
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}
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public function testRemoveListener()
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{
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$this->dispatcher->addListener('pre.bar', $this->listener);
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$this->assertTrue($this->dispatcher->hasListeners(self::preBar));
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$this->dispatcher->removeListener('pre.bar', $this->listener);
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$this->assertFalse($this->dispatcher->hasListeners(self::preBar));
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$this->dispatcher->removeListener('notExists', $this->listener);
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}
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public function testAddSubscriber()
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{
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$eventSubscriber = new TestEventSubscriber();
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$this->dispatcher->addSubscriber($eventSubscriber);
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$this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
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$this->assertTrue($this->dispatcher->hasListeners(self::postFoo));
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}
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public function testAddSubscriberWithPriorities()
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{
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$eventSubscriber = new TestEventSubscriber();
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$this->dispatcher->addSubscriber($eventSubscriber);
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$eventSubscriber = new TestEventSubscriberWithPriorities();
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$this->dispatcher->addSubscriber($eventSubscriber);
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$listeners = $this->dispatcher->getListeners('pre.foo');
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$this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
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$this->assertCount(2, $listeners);
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$this->assertInstanceOf('Symfony\Component\EventDispatcher\Tests\TestEventSubscriberWithPriorities', $listeners[0][0]);
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}
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public function testAddSubscriberWithMultipleListeners()
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{
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$eventSubscriber = new TestEventSubscriberWithMultipleListeners();
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$this->dispatcher->addSubscriber($eventSubscriber);
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$listeners = $this->dispatcher->getListeners('pre.foo');
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$this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
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$this->assertCount(2, $listeners);
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$this->assertEquals('preFoo2', $listeners[0][1]);
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}
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public function testRemoveSubscriber()
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{
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$eventSubscriber = new TestEventSubscriber();
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$this->dispatcher->addSubscriber($eventSubscriber);
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$this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
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$this->assertTrue($this->dispatcher->hasListeners(self::postFoo));
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$this->dispatcher->removeSubscriber($eventSubscriber);
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$this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
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$this->assertFalse($this->dispatcher->hasListeners(self::postFoo));
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}
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public function testRemoveSubscriberWithPriorities()
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{
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$eventSubscriber = new TestEventSubscriberWithPriorities();
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$this->dispatcher->addSubscriber($eventSubscriber);
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$this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
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$this->dispatcher->removeSubscriber($eventSubscriber);
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$this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
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}
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public function testRemoveSubscriberWithMultipleListeners()
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{
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$eventSubscriber = new TestEventSubscriberWithMultipleListeners();
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$this->dispatcher->addSubscriber($eventSubscriber);
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$this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
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$this->assertCount(2, $this->dispatcher->getListeners(self::preFoo));
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$this->dispatcher->removeSubscriber($eventSubscriber);
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$this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
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}
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public function testEventReceivesTheDispatcherInstance()
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{
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$dispatcher = null;
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$this->dispatcher->addListener('test', function ($event) use (&$dispatcher) {
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$dispatcher = $event->getDispatcher();
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});
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$this->dispatcher->dispatch('test');
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$this->assertSame($this->dispatcher, $dispatcher);
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}
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public function testEventReceivesTheDispatcherInstanceAsArgument()
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{
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$listener = new TestWithDispatcher();
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$this->dispatcher->addListener('test', array($listener, 'foo'));
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$this->assertNull($listener->name);
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$this->assertNull($listener->dispatcher);
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$this->dispatcher->dispatch('test');
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$this->assertEquals('test', $listener->name);
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$this->assertSame($this->dispatcher, $listener->dispatcher);
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}
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/**
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* @see https://bugs.php.net/bug.php?id=62976
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*
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* This bug affects:
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* - The PHP 5.3 branch for versions < 5.3.18
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* - The PHP 5.4 branch for versions < 5.4.8
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* - The PHP 5.5 branch is not affected
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*/
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public function testWorkaroundForPhpBug62976()
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{
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$dispatcher = $this->createEventDispatcher();
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$dispatcher->addListener('bug.62976', new CallableClass());
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$dispatcher->removeListener('bug.62976', function () {});
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$this->assertTrue($dispatcher->hasListeners('bug.62976'));
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}
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public function testHasListenersWhenAddedCallbackListenerIsRemoved()
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{
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$listener = function () {};
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$this->dispatcher->addListener('foo', $listener);
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$this->dispatcher->removeListener('foo', $listener);
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$this->assertFalse($this->dispatcher->hasListeners());
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}
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public function testGetListenersWhenAddedCallbackListenerIsRemoved()
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{
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$listener = function () {};
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$this->dispatcher->addListener('foo', $listener);
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$this->dispatcher->removeListener('foo', $listener);
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$this->assertSame(array(), $this->dispatcher->getListeners());
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}
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public function testHasListenersWithoutEventsReturnsFalseAfterHasListenersWithEventHasBeenCalled()
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{
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$this->assertFalse($this->dispatcher->hasListeners('foo'));
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$this->assertFalse($this->dispatcher->hasListeners());
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}
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}
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class CallableClass
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{
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public function __invoke()
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{
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}
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}
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class TestEventListener
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{
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public $preFooInvoked = false;
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public $postFooInvoked = false;
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/* Listener methods */
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public function preFoo(Event $e)
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{
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$this->preFooInvoked = true;
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}
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public function postFoo(Event $e)
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{
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$this->postFooInvoked = true;
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$e->stopPropagation();
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}
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}
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class TestWithDispatcher
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{
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public $name;
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public $dispatcher;
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public function foo(Event $e, $name, $dispatcher)
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{
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$this->name = $name;
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$this->dispatcher = $dispatcher;
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}
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}
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class TestEventSubscriber implements EventSubscriberInterface
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{
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public static function getSubscribedEvents()
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{
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return array('pre.foo' => 'preFoo', 'post.foo' => 'postFoo');
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}
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}
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class TestEventSubscriberWithPriorities implements EventSubscriberInterface
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{
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public static function getSubscribedEvents()
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{
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return array(
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'pre.foo' => array('preFoo', 10),
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'post.foo' => array('postFoo'),
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);
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}
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}
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class TestEventSubscriberWithMultipleListeners implements EventSubscriberInterface
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{
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public static function getSubscribedEvents()
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{
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return array('pre.foo' => array(
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array('preFoo1'),
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array('preFoo2', 10),
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));
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}
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}
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