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<?php |
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namespace EventSauce\EventSourcing; |
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use Exception; |
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use function get_class; |
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use PHPUnit\Framework\TestCase; |
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use EventSauce\Time\Clock; |
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use EventSauce\Time\TestClock; |
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abstract class AggregateRootTestCase extends TestCase |
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{ |
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/** |
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* @var InMemoryMessageRepository |
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*/ |
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private $messageRepository; |
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/** |
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* @var AggregateRootRepository |
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*/ |
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private $repository; |
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/** |
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* @var CommandHandler |
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*/ |
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private $commandHandler; |
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/** |
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* @var Exception|null |
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*/ |
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private $caughtException; |
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/** |
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* @var Event[] |
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*/ |
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private $expectedEvents = []; |
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/** |
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* @var Exception|null |
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*/ |
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private $theExpectedException; |
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/** |
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* @var TestClock |
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*/ |
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private $clock; |
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/** |
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* @var bool |
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*/ |
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private $assertedScenario = false; |
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/** |
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* @before |
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*/ |
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protected function setUpEventStore() |
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{ |
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$className = $this->aggregateRootClassName(); |
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$this->clock = new TestClock(); |
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$this->messageRepository = new InMemoryMessageRepository($this->messageDispatcher()); |
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$this->repository = new AggregateRootRepository($className, $this->messageRepository, new DelegatingMessageDecorator()); |
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$this->commandHandler = $this->commandHandler($this->repository, $this->clock); |
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$this->expectedEvents = []; |
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$this->assertedScenario = false; |
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$this->theExpectedException = null; |
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$this->caughtException = null; |
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} |
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/** |
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* @after |
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*/ |
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protected function assertScenario() |
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{ |
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// @codeCoverageIgnoreStart |
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if ($this->assertedScenario) { |
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return; |
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} |
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// @codeCoverageIgnoreEnd |
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$this->assertExpectedException($this->theExpectedException, $this->caughtException); |
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$this->assertLastCommitEqualsEvents(... $this->expectedEvents); |
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$this->messageRepository->purgeLastCommit(); |
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$this->assertedScenario = true; |
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} |
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abstract protected function aggregateRootClassName(): string; |
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abstract protected function commandHandler(AggregateRootRepository $repository, Clock $clock): CommandHandler; |
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/** |
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* @return $this |
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*/ |
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protected function given(Event ... $events) |
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{ |
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$this->repository->persist(... $events); |
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$this->messageRepository->purgeLastCommit(); |
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return $this; |
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} |
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/** |
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* @return $this |
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*/ |
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protected function when(Command $command) |
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{ |
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try { |
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$this->commandHandler->handle($command); |
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} catch (Exception $exception) { |
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$this->caughtException = $exception; |
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} |
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return $this; |
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} |
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/** |
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* @return $this |
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*/ |
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protected function then(Event ... $events) |
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{ |
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$this->expectedEvents = $events; |
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return $this; |
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} |
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/** |
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* @return $this |
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*/ |
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public function thenWeAreSorry(Exception $expectedException) |
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{ |
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$this->theExpectedException = $expectedException; |
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return $this; |
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} |
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/** |
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* @return $this |
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*/ |
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protected function thenNothingShouldHaveHappened() |
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{ |
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$this->expectedEvents = []; |
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return $this; |
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} |
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protected function assertLastCommitEqualsEvents(Event ... $events) |
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{ |
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self::assertEquals($events, $this->messageRepository->lastCommit()); |
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} |
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private function assertExpectedException(Exception $expectedException = null, Exception $caughtException = null) |
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{ |
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$this->theExpectedException = null; |
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$this->caughtException = null; |
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if ($expectedException == $caughtException) { |
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return; |
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} |
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if ($expectedException === null || get_class($expectedException) !== get_class($caughtException)) { |
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throw $caughtException; |
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} |
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self::assertEquals([$expectedException], [$caughtException]); |
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} |
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protected function pointInTime(): PointInTime |
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{ |
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return $this->clock->pointInTime(); |
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} |
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private function messageDispatcher(): MessageDispatcher |
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{ |
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return new SynchronousMessageDispatcher(... $this->consumers()); |
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} |
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private function consumers(): array |
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{ |
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return []; |
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} |
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} |
EventSaucePHP /
EventSauce
