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<?php |
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declare(strict_types=1); |
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namespace ArpTest\EventDispatcher\Listener; |
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use Arp\EventDispatcher\Listener\Exception\EventListenerException; |
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use Arp\EventDispatcher\Listener\LazyListener; |
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use PHPUnit\Framework\MockObject\MockObject; |
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use PHPUnit\Framework\TestCase; |
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/** |
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* @author Alex Patterson <[email protected]> |
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* @package ArpTest\EventDispatcher\Listener |
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*/ |
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final class LazyListenerTest extends TestCase |
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{ |
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/** |
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* testIsCallable |
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* |
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* @covers \Arp\EventDispatcher\Listener\LazyListener::__construct |
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*/ |
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public function testIsCallable(): void |
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{ |
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$listener = new LazyListener(\stdClass::class, []); |
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$this->assertIsCallable($listener); |
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} |
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/** |
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* Assert that a new EventListenerException will be thrown if the lazy loaded event listener is not callable. |
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* |
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* @covers \Arp\EventDispatcher\Listener\LazyListener::__invoke |
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*/ |
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public function testInvokeWillThrowEventListenerExceptionIfLoadedListenerIsNotCallable(): void |
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{ |
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$className = \stdClass::class; |
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$factory = static function () { |
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return false; // our result is not a callable type. |
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}; |
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$listener = new LazyListener($className, [], $factory); |
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$this->expectException(EventListenerException::class); |
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$this->expectExceptionMessage(sprintf( |
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'The the lazy loaded event listener, using class \'%s\', is not callable.', |
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$className |
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)); |
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$event = new \stdClass(); |
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$listener($event); |
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} |
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/** |
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* Assert that the event listener will be created and invoked. |
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* |
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* @covers \Arp\EventDispatcher\Listener\LazyListener::__invoke |
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*/ |
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public function testInvokeWillCreateAndInvokeTheLazyEventListener(): void |
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{ |
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$expectedClassName = \stdClass::class; |
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$expectedEvent = new \stdClass(); |
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$expectedArgs = ['hello' => 'foo']; |
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$mockedListener = function ($passedEvent) use ($expectedEvent) { |
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$this->assertSame($passedEvent, $expectedEvent); |
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}; |
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$factory = function ($className, $arguments) use ($mockedListener, $expectedArgs, $expectedClassName) { |
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$this->assertSame($expectedClassName, $className); |
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$this->assertSame($expectedArgs, $arguments); |
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return $mockedListener; |
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}; |
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$lazyListener = new LazyListener($expectedClassName, $expectedArgs, $factory); |
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$lazyListener($expectedEvent); |
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} |
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/** |
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* Assert that the default factory will be used if no factory has been provided to the. |
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* |
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* @throws EventListenerException |
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* |
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* @covers \Arp\EventDispatcher\Listener\LazyListener::__invoke |
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*/ |
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public function testDefaultFactoryWillBeUsedWhenOneIsNotProvidedViaConstruct(): void |
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{ |
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$expectedClassName = 'Foo'; |
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$expectedArguments = ['foo' => 'bar', 'bar' => 123]; |
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$expectedEvent = new \stdClass(); |
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$defaultListener = function (object $event) use ($expectedEvent) { |
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$this->assertSame($expectedEvent, $event); |
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}; |
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$defaultListenerFactory = function ( |
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string $className, |
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array $arguments = [] |
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) use ( |
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$expectedClassName, |
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$expectedArguments, |
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$defaultListener |
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) { |
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$this->assertSame($expectedClassName, $className); |
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$this->assertSame($expectedArguments, $arguments); |
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return $defaultListener; |
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}; |
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/** @var LazyListener|MockObject $lazyListener */ |
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$lazyListener = $this->getMockBuilder(LazyListener::class) |
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->setConstructorArgs([$expectedClassName, $expectedArguments]) |
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->onlyMethods(['getDefaultListenerFactory']) |
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->getMock(); |
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$lazyListener->expects($this->once()) |
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->method('getDefaultListenerFactory') |
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->willReturn($defaultListenerFactory); |
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$lazyListener($expectedEvent); |
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} |
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/** |
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* Assert that the defaultFactory is created and lazy loaded listener is executed correctly. |
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* |
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* @return void |
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*/ |
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public function testDefaultFactoryCreatesAndInvokesLazyListenerMock(): void |
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{ |
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$event = new \stdClass(); |
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$className = LazyListenerMock::class; |
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$arguments = [ |
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$event, // bit of a hack but we need $event in the fake listener to assert something... |
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'foo' => 'bar', |
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'test' => 123, |
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]; |
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$lazyListener = new LazyListener($className, $arguments); |
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$lazyListener($event); |
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} |
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} |
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alex-patterson-webdev /
event-dispatcher
