Viewing file:  EventDispatcherTest.php (11.89 KB) -rw-r--r--
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<?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 Symfony\Component\EventDispatcher\Event;
use Symfony\Component\EventDispatcher\EventDispatcher;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
class EventDispatcherTest extends \PHPUnit_Framework_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 = new EventDispatcher();
$this->listener = new TestEventListener();
}
protected function tearDown()
{
$this->dispatcher = null;
$this->listener = null;
}
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(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 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->assertEquals('pre.foo', $event->getName());
$this->assertSame($event, $return);
}
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));
}
public function testEventReceivesTheDispatcherInstance()
{
$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 = new EventDispatcher();
$dispatcher->addListener('bug.62976', new CallableClass());
$dispatcher->removeListener('bug.62976', function () {});
$this->assertTrue($dispatcher->hasListeners('bug.62976'));
}
}
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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