144 - Testing the Event Listener

app/Jobs/ProcessPosterImage.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Jobs;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Foundation\Bus\Dispatchable;
+
+class ProcessPosterImage implements ShouldQueue
+{
+    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
+
+    public $concert;
+
+    public function __construct($concert)
+    {
+        $this->concert = $concert;
+    }
+
+    public function handle()
+    {
+        //
+    }
+}

app/Listeners/SchedulePosterImageProcessing.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Listeners;
+
+use App\Events\ConcertAdded;
+use App\Jobs\ProcessPosterImage;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Contracts\Queue\ShouldQueue;
+
+class SchedulePosterImageProcessing
+{
+    public function handle(ConcertAdded $event)
+    {
+        if ($event->concert->hasPoster()) {
+            ProcessPosterImage::dispatch($event->concert);
+        }
+    }
+}

app/Providers/EventServiceProvider.php

@@ -13,8 +13,8 @@ class EventServiceProvider extends ServiceProvider
      * @var array
      */
     protected $listen = [
-        'App\Events\SomeEvent' => [
+        'App\Events\ConcertAdded' => [
-            'App\Listeners\EventListener',
+            'App\Listeners\SchedulePosterImageProcessing',
         ],
     ];
 

tests/Unit/Listeners/SchedulePosterImageProcessingTest.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Tests\Unit\Listeners;
+
+use Tests\TestCase;
+use App\Events\ConcertAdded;
+use App\Jobs\ProcessPosterImage;
+use Illuminate\Support\Facades\Queue;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+class SchedulePosterImageProcessingTest extends TestCase
+{
+    use RefreshDatabase;
+
+    /** @test */
+    function it_queues_a_job_to_process_a_poster_image_if_a_poster_image_is_present()
+    {
+        Queue::fake();
+
+        $concert = \ConcertFactory::createUnpublished([
+            'poster_image_path' => 'posters/example-poster.png',
+        ]);
+
+        ConcertAdded::dispatch($concert);
+
+        Queue::assertPushed(ProcessPosterImage::class, function ($job) use ($concert) {
+            return $job->concert->is($concert);
+        });
+    }
+
+    /** @test */
+    function a_job_is_not_queued_if_a_poster_is_not_present()
+    {
+        Queue::fake();
+
+        $concert = \ConcertFactory::createUnpublished([
+            'poster_image_path' => null,
+        ]);
+
+        ConcertAdded::dispatch($concert);
+
+        Queue::assertNotPushed(ProcessPosterImage::class);
+    }
+}