Add a testing trait for Message Consumer testing

src/Testing/IlluminateMessageConsumerTesting.php

@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Dflydev\EventSauce\SupportForLaravel\Testing;
+
+use Dflydev\EventSauce\Support\LazyMessageDispatching\LazyMessageDispatcher;
+use Dflydev\EventSauce\SupportForLaravel\EventSauceConfiguration;
+use EventSauce\EventSourcing\InMemoryMessageRepository;
+use EventSauce\EventSourcing\MessageConsumer;
+
+/**
+ * @method void afterApplicationCreated(callable $callback)
+ *
+ * @property \Illuminate\Foundation\Application $app
+ */
+trait IlluminateMessageConsumerTesting
+{
+    private InMemoryMessageRepository $messageRepositoryForMessageConsumerTesting;
+
+    /**
+     * @return MessageConsumer[]
+     */
+    abstract public static function getMessageConsumerClassesToTest(): array;
+
+    public function configureMessageConsumerTesting(): void
+    {
+    }
+
+    protected function setInMemoryMessageRepositoryForMessageConsumerTesting(InMemoryMessageRepository $messageRepositoryForMessageConsumerTesting): void
+    {
+        if (isset($this->messageRepositoryForMessageConsumerTesting)) {
+            throw new \LogicException('Message repository for message consumer testing already set.');
+        }
+
+        $this->messageRepositoryForMessageConsumerTesting = $messageRepositoryForMessageConsumerTesting;
+    }
+
+    protected function getInMemoryMessageRepositoryForMessageConsumerTesting(): InMemoryMessageRepository
+    {
+        if (!isset($this->messageRepositoryForMessageConsumerTesting)) {
+            $this->messageRepositoryForMessageConsumerTesting = new InMemoryMessageRepository();
+        }
+
+        return $this->messageRepositoryForMessageConsumerTesting;
+    }
+
+    /**
+     * @before
+     */
+    public function configureContainerForMessageConsumerTesting(): void
+    {
+        $this->afterApplicationCreated(function () {
+            $transactionalMessageDispatcher = new LazyMessageDispatcher($this->app, ...$this->getMessageConsumerClassesToTest());
+
+            EventSauceConfiguration::configureForTesting($this->app)
+                ->fakeMessageRepository($this->getInMemoryMessageRepositoryForMessageConsumerTesting())
+                ->fakeMessageDispatching()
+                ->fakeTransactionalMessageDispatcher($transactionalMessageDispatcher);
+
+            $this->configureMessageConsumerTesting();
+        });
+    }
+}