Test that a queue entry is added for a post

References #328

web/modules/custom/blog/tests/src/Kernel/PushToSocialMediaTest.php

@@ -0,0 +1,56 @@
+<?php
+
+// phpcs:disable Drupal.Commenting.DocComment, Drupal.NamingConventions.ValidFunctionName
+
+namespace Drupal\Tests\opdavies_blog\Kernel;
+
+use Drupal\Core\Queue\QueueInterface;
+use Drupal\KernelTests\Core\Entity\EntityKernelTestBase;
+use Drupal\Tests\node\Traits\NodeCreationTrait;
+
+final class PushToSocialMediaTest extends EntityKernelTestBase {
+
+  use NodeCreationTrait;
+
+  public static $modules = [
+    // Core.
+    'node',
+    'taxonomy',
+    'link',
+
+    // Contrib.
+    'discoverable_entity_bundle_classes',
+    'hook_event_dispatcher',
+    'core_event_dispatcher',
+
+    // Custom.
+    'opdavies_blog',
+    'opdavies_blog_test',
+  ];
+
+  private QueueInterface $queue;
+
+  /** @test */
+  public function a_post_is_pushed_to_social_media_once_published(): void {
+    $this->assertSame(0, $this->queue->numberOfItems());
+
+    $this->createNode([
+      'title' => 'Ignoring PHPCS sniffs within PHPUnit tests',
+      'type' => 'post',
+    ]);
+
+    $this->assertSame(1, $this->queue->numberOfItems());
+  }
+
+  protected function setUp() {
+    parent::setUp();
+
+    $this->installConfig(['filter', 'opdavies_blog_test']);
+
+    $this->installSchema('node', ['node_access']);
+
+    $this->queue = $this->container->get('queue')
+      ->get('push_post_to_social_media');
+  }
+
+}