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EventEmitterTest.php
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EventEmitterTest.php
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<?php
namespace Sabre\Event;
class EventEmitterTest extends \PHPUnit_Framework_TestCase {
function testInit() {
$ee = new EventEmitter();
$this->assertInstanceOf('Sabre\\Event\\EventEmitter', $ee);
}
function testListeners() {
$ee = new EventEmitter();
$callback1 = function() { };
$callback2 = function() { };
$ee->on('foo', $callback1, 200);
$ee->on('foo', $callback2, 100);
$this->assertEquals([$callback2, $callback1], $ee->listeners('foo'));
}
/**
* @depends testInit
*/
function testHandleEvent() {
$argResult = null;
$ee = new EventEmitter();
$ee->on('foo', function($arg) use (&$argResult) {
$argResult = $arg;
});
$this->assertTrue(
$ee->emit('foo', ['bar'])
);
$this->assertEquals('bar', $argResult);
}
/**
* @depends testHandleEvent
*/
function testCancelEvent() {
$argResult = 0;
$ee = new EventEmitter();
$ee->on('foo', function($arg) use (&$argResult) {
$argResult = 1;
return false;
});
$ee->on('foo', function($arg) use (&$argResult) {
$argResult = 2;
});
$this->assertFalse(
$ee->emit('foo', ['bar'])
);
$this->assertEquals(1, $argResult);
}
/**
* @depends testCancelEvent
*/
function testPriority() {
$argResult = 0;
$ee = new EventEmitter();
$ee->on('foo', function($arg) use (&$argResult) {
$argResult = 1;
return false;
});
$ee->on('foo', function($arg) use (&$argResult) {
$argResult = 2;
return false;
}, 1);
$this->assertFalse(
$ee->emit('foo', ['bar'])
);
$this->assertEquals(2, $argResult);
}
/**
* @depends testPriority
*/
function testPriority2() {
$result = [];
$ee = new EventEmitter();
$ee->on('foo', function() use (&$result) {
$result[] = 'a';
}, 200);
$ee->on('foo', function() use (&$result) {
$result[] = 'b';
}, 50);
$ee->on('foo', function() use (&$result) {
$result[] = 'c';
}, 300);
$ee->on('foo', function() use (&$result) {
$result[] = 'd';
});
$ee->emit('foo');
$this->assertEquals(['b', 'd', 'a', 'c'], $result);
}
function testRemoveListener() {
$result = false;
$callBack = function() use (&$result) {
$result = true;
};
$ee = new EventEmitter();
$ee->on('foo', $callBack);
$ee->emit('foo');
$this->assertTrue($result);
$result = false;
$this->assertTrue(
$ee->removeListener('foo', $callBack)
);
$ee->emit('foo');
$this->assertFalse($result);
}
function testRemoveUnknownListener() {
$result = false;
$callBack = function() use (&$result) {
$result = true;
};
$ee = new EventEmitter();
$ee->on('foo', $callBack);
$ee->emit('foo');
$this->assertTrue($result);
$result = false;
$this->assertFalse($ee->removeListener('bar', $callBack));
$ee->emit('foo');
$this->assertTrue($result);
}
function testRemoveListenerTwice() {
$result = false;
$callBack = function() use (&$result) {
$result = true;
};
$ee = new EventEmitter();
$ee->on('foo', $callBack);
$ee->emit('foo');
$this->assertTrue($result);
$result = false;
$this->assertTrue(
$ee->removeListener('foo', $callBack)
);
$this->assertFalse(
$ee->removeListener('foo', $callBack)
);
$ee->emit('foo');
$this->assertFalse($result);
}
function testRemoveAllListeners() {
$result = false;
$callBack = function() use (&$result) {
$result = true;
};
$ee = new EventEmitter();
$ee->on('foo', $callBack);
$ee->emit('foo');
$this->assertTrue($result);
$result = false;
$ee->removeAllListeners('foo');
$ee->emit('foo');
$this->assertFalse($result);
}
function testRemoveAllListenersNoArg() {
$result = false;
$callBack = function() use (&$result) {
$result = true;
};
$ee = new EventEmitter();
$ee->on('foo', $callBack);
$ee->emit('foo');
$this->assertTrue($result);
$result = false;
$ee->removeAllListeners();
$ee->emit('foo');
$this->assertFalse($result);
}
function testOnce() {
$result = 0;
$callBack = function() use (&$result) {
$result++;
};
$ee = new EventEmitter();
$ee->once('foo', $callBack);
$ee->emit('foo');
$ee->emit('foo');
$this->assertEquals(1, $result);
}
/**
* @depends testCancelEvent
*/
function testPriorityOnce() {
$argResult = 0;
$ee = new EventEmitter();
$ee->once('foo', function($arg) use (&$argResult) {
$argResult = 1;
return false;
});
$ee->once('foo', function($arg) use (&$argResult) {
$argResult = 2;
return false;
}, 1);
$this->assertFalse(
$ee->emit('foo', ['bar'])
);
$this->assertEquals(2, $argResult);
}
}

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