fix: ensure event listeners are registered within service provider (Pod-Point#77)

* chore: add test for service provider event registration

* fix: call register within event service provider

Author: oaklees

src/EventServiceProvider.php

@@ -20,6 +20,8 @@ class EventServiceProvider extends ServiceProvider
      */
     public function register()
     {
+        parent::register();
+
         $this->registerSnsBroadcaster();
 
         $this->registerSqsSnsQueueConnector();

tests/EventServiceProviderTest.php

@@ -2,6 +2,7 @@
 
 namespace PodPoint\AwsPubSub\Tests;
 
+use Illuminate\Support\Facades\Event;
 use PodPoint\AwsPubSub\EventServiceProvider;
 
 class EventServiceProviderTest extends TestCase
@@ -128,4 +129,23 @@ public function it_can_make_sure_some_aws_credentials_are_provided_and_valid(arr
         $this->assertArrayHasKey('foo', $config);
         $this->assertArrayNotHasKey('credentials', $config);
     }
+
+    /**
+     * @test
+     */
+    public function it_can_register_listeners_when_listen_array_is_populated()
+    {
+        $this->app->register(TestPubSubEventServiceProvider::class);
+
+        $this->assertCount(1, Event::getListeners('foo'));
+        $this->assertCount(2, Event::getListeners('bar'));
+    }
+}
+
+class TestPubSubEventServiceProvider extends EventServiceProvider
+{
+    protected $listen = [
+        'foo' => ['bar'],
+        'bar' => ['baz', 'qux'],
+    ];
 }