--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\EventDispatcher\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\EventDispatcher\Event;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+abstract class AbstractEventDispatcherTest extends TestCase
+{
+ /* Some pseudo events */
+ const preFoo = 'pre.foo';
+ const postFoo = 'post.foo';
+ const preBar = 'pre.bar';
+ const postBar = 'post.bar';
+
+ /**
+ * @var EventDispatcher
+ */
+ private $dispatcher;
+
+ private $listener;
+
+ protected function setUp()
+ {
+ $this->dispatcher = $this->createEventDispatcher();
+ $this->listener = new TestEventListener();
+ }
+
+ protected function tearDown()
+ {
+ $this->dispatcher = null;
+ $this->listener = null;
+ }
+
+ abstract protected function createEventDispatcher();
+
+ public function testInitialState()
+ {
+ $this->assertEquals(array(), $this->dispatcher->getListeners());
+ $this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
+ $this->assertFalse($this->dispatcher->hasListeners(self::postFoo));
+ }
+
+ public function testAddListener()
+ {
+ $this->dispatcher->addListener('pre.foo', array($this->listener, 'preFoo'));
+ $this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'));
+ $this->assertTrue($this->dispatcher->hasListeners());
+ $this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
+ $this->assertTrue($this->dispatcher->hasListeners(self::postFoo));
+ $this->assertCount(1, $this->dispatcher->getListeners(self::preFoo));
+ $this->assertCount(1, $this->dispatcher->getListeners(self::postFoo));
+ $this->assertCount(2, $this->dispatcher->getListeners());
+ }
+
+ public function testGetListenersSortsByPriority()
+ {
+ $listener1 = new TestEventListener();
+ $listener2 = new TestEventListener();
+ $listener3 = new TestEventListener();
+ $listener1->name = '1';
+ $listener2->name = '2';
+ $listener3->name = '3';
+
+ $this->dispatcher->addListener('pre.foo', array($listener1, 'preFoo'), -10);
+ $this->dispatcher->addListener('pre.foo', array($listener2, 'preFoo'), 10);
+ $this->dispatcher->addListener('pre.foo', array($listener3, 'preFoo'));
+
+ $expected = array(
+ array($listener2, 'preFoo'),
+ array($listener3, 'preFoo'),
+ array($listener1, 'preFoo'),
+ );
+
+ $this->assertSame($expected, $this->dispatcher->getListeners('pre.foo'));
+ }
+
+ public function testGetAllListenersSortsByPriority()
+ {
+ $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);
+
+ $expected = array(
+ 'pre.foo' => array($listener3, $listener2, $listener1),
+ 'post.foo' => array($listener6, $listener5, $listener4),
+ );
+
+ $this->assertSame($expected, $this->dispatcher->getListeners());
+ }
+
+ public function testGetListenerPriority()
+ {
+ $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()
+ {
+ $this->dispatcher->addListener('pre.foo', array($this->listener, 'preFoo'));
+ $this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'));
+ $this->dispatcher->dispatch(self::preFoo);
+ $this->assertTrue($this->listener->preFooInvoked);
+ $this->assertFalse($this->listener->postFooInvoked);
+ $this->assertInstanceOf('Symfony\Component\EventDispatcher\Event', $this->dispatcher->dispatch('noevent'));
+ $this->assertInstanceOf('Symfony\Component\EventDispatcher\Event', $this->dispatcher->dispatch(self::preFoo));
+ $event = new Event();
+ $return = $this->dispatcher->dispatch(self::preFoo, $event);
+ $this->assertSame($event, $return);
+ }
+
+ /**
+ * @group legacy
+ */
+ public function testLegacyDispatch()
+ {
+ $event = new Event();
+ $this->dispatcher->dispatch(self::preFoo, $event);
+ $this->assertEquals('pre.foo', $event->getName());
+ }
+
+ public function testDispatchForClosure()
+ {
+ $invoked = 0;
+ $listener = function () use (&$invoked) {
+ ++$invoked;
+ };
+ $this->dispatcher->addListener('pre.foo', $listener);
+ $this->dispatcher->addListener('post.foo', $listener);
+ $this->dispatcher->dispatch(self::preFoo);
+ $this->assertEquals(1, $invoked);
+ }
+
+ public function testStopEventPropagation()
+ {
+ $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
+ $this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'), 10);
+ $this->dispatcher->addListener('post.foo', array($otherListener, 'preFoo'));
+ $this->dispatcher->dispatch(self::postFoo);
+ $this->assertTrue($this->listener->postFooInvoked);
+ $this->assertFalse($otherListener->postFooInvoked);
+ }
+
+ public function testDispatchByPriority()
+ {
+ $invoked = array();
+ $listener1 = function () use (&$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(self::preFoo);
+ $this->assertEquals(array('3', '2', '1'), $invoked);
+ }
+
+ public function testRemoveListener()
+ {
+ $this->dispatcher->addListener('pre.bar', $this->listener);
+ $this->assertTrue($this->dispatcher->hasListeners(self::preBar));
+ $this->dispatcher->removeListener('pre.bar', $this->listener);
+ $this->assertFalse($this->dispatcher->hasListeners(self::preBar));
+ $this->dispatcher->removeListener('notExists', $this->listener);
+ }
+
+ public function testAddSubscriber()
+ {
+ $eventSubscriber = new TestEventSubscriber();
+ $this->dispatcher->addSubscriber($eventSubscriber);
+ $this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
+ $this->assertTrue($this->dispatcher->hasListeners(self::postFoo));
+ }
+
+ public function testAddSubscriberWithPriorities()
+ {
+ $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::preFoo));
+ $this->assertCount(2, $listeners);
+ $this->assertInstanceOf('Symfony\Component\EventDispatcher\Tests\TestEventSubscriberWithPriorities', $listeners[0][0]);
+ }
+
+ public function testAddSubscriberWithMultipleListeners()
+ {
+ $eventSubscriber = new TestEventSubscriberWithMultipleListeners();
+ $this->dispatcher->addSubscriber($eventSubscriber);
+
+ $listeners = $this->dispatcher->getListeners('pre.foo');
+ $this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
+ $this->assertCount(2, $listeners);
+ $this->assertEquals('preFoo2', $listeners[0][1]);
+ }
+
+ public function testRemoveSubscriber()
+ {
+ $eventSubscriber = new TestEventSubscriber();
+ $this->dispatcher->addSubscriber($eventSubscriber);
+ $this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
+ $this->assertTrue($this->dispatcher->hasListeners(self::postFoo));
+ $this->dispatcher->removeSubscriber($eventSubscriber);
+ $this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
+ $this->assertFalse($this->dispatcher->hasListeners(self::postFoo));
+ }
+
+ public function testRemoveSubscriberWithPriorities()
+ {
+ $eventSubscriber = new TestEventSubscriberWithPriorities();
+ $this->dispatcher->addSubscriber($eventSubscriber);
+ $this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
+ $this->dispatcher->removeSubscriber($eventSubscriber);
+ $this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
+ }
+
+ public function testRemoveSubscriberWithMultipleListeners()
+ {
+ $eventSubscriber = new TestEventSubscriberWithMultipleListeners();
+ $this->dispatcher->addSubscriber($eventSubscriber);
+ $this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
+ $this->assertCount(2, $this->dispatcher->getListeners(self::preFoo));
+ $this->dispatcher->removeSubscriber($eventSubscriber);
+ $this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
+ }
+
+ /**
+ * @group legacy
+ */
+ public function testLegacyEventReceivesTheDispatcherInstance()
+ {
+ $dispatcher = null;
+ $this->dispatcher->addListener('test', function ($event) use (&$dispatcher) {
+ $dispatcher = $event->getDispatcher();
+ });
+ $this->dispatcher->dispatch('test');
+ $this->assertSame($this->dispatcher, $dispatcher);
+ }
+
+ public function testEventReceivesTheDispatcherInstanceAsArgument()
+ {
+ $listener = new TestWithDispatcher();
+ $this->dispatcher->addListener('test', array($listener, 'foo'));
+ $this->assertNull($listener->name);
+ $this->assertNull($listener->dispatcher);
+ $this->dispatcher->dispatch('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()
+ {
+ $dispatcher = $this->createEventDispatcher();
+ $dispatcher->addListener('bug.62976', new CallableClass());
+ $dispatcher->removeListener('bug.62976', function () {});
+ $this->assertTrue($dispatcher->hasListeners('bug.62976'));
+ }
+
+ public function testHasListenersWhenAddedCallbackListenerIsRemoved()
+ {
+ $listener = function () {};
+ $this->dispatcher->addListener('foo', $listener);
+ $this->dispatcher->removeListener('foo', $listener);
+ $this->assertFalse($this->dispatcher->hasListeners());
+ }
+
+ public function testGetListenersWhenAddedCallbackListenerIsRemoved()
+ {
+ $listener = function () {};
+ $this->dispatcher->addListener('foo', $listener);
+ $this->dispatcher->removeListener('foo', $listener);
+ $this->assertSame(array(), $this->dispatcher->getListeners());
+ }
+
+ public function testHasListenersWithoutEventsReturnsFalseAfterHasListenersWithEventHasBeenCalled()
+ {
+ $this->assertFalse($this->dispatcher->hasListeners('foo'));
+ $this->assertFalse($this->dispatcher->hasListeners());
+ }
+}
+
+class CallableClass
+{
+ public function __invoke()
+ {
+ }
+}
+
+class TestEventListener
+{
+ public $preFooInvoked = false;
+ public $postFooInvoked = false;
+
+ /* Listener methods */
+
+ public function preFoo(Event $e)
+ {
+ $this->preFooInvoked = true;
+ }
+
+ public function postFoo(Event $e)
+ {
+ $this->postFooInvoked = true;
+
+ $e->stopPropagation();
+ }
+}
+
+class TestWithDispatcher
+{
+ public $name;
+ public $dispatcher;
+
+ public function foo(Event $e, $name, $dispatcher)
+ {
+ $this->name = $name;
+ $this->dispatcher = $dispatcher;
+ }
+}
+
+class TestEventSubscriber implements EventSubscriberInterface
+{
+ public static function getSubscribedEvents()
+ {
+ return array('pre.foo' => 'preFoo', 'post.foo' => 'postFoo');
+ }
+}
+
+class TestEventSubscriberWithPriorities implements EventSubscriberInterface
+{
+ public static function getSubscribedEvents()
+ {
+ return array(
+ 'pre.foo' => array('preFoo', 10),
+ 'post.foo' => array('postFoo'),
+ );
+ }
+}
+
+class TestEventSubscriberWithMultipleListeners implements EventSubscriberInterface
+{
+ public static function getSubscribedEvents()
+ {
+ return array('pre.foo' => array(
+ array('preFoo1'),
+ array('preFoo2', 10),
+ ));
+ }
+}
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