only in patch2:
unchanged:
--- /dev/null
+++ b/core/modules/media/tests/src/Functional/MediaContextualLinksTest.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace Drupal\Tests\media\Functional;
+
+use Drupal\media\Entity\Media;
+
+/**
+ * Tests views contextual links on nodes.
+ *
+ * @group node
+ */
+class MediaContextualLinksTest extends MediaFunctionalTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = [
+    'system',
+    'node',
+    'field_ui',
+    'views_ui',
+    'media',
+    'media_test_source',
+    'contextual',
+  ];
+
+  /**
+   * Tests contextual links.
+   */
+  public function testMediaContextualLinks() {
+
+    // Create a media type.
+    $mediaType = $this->createMediaType();
+
+    // Create a media item.
+    $media = Media::create([
+      'bundle' => $mediaType->id(),
+      'name' => 'Unnamed',
+    ]);
+    $media->save();
+
+    $user = $this->drupalCreateUser([
+      'administer media',
+      'access contextual links',
+    ]);
+    $this->drupalLogin($user);
+
+    $this->drupalGet('media/' . $media->id());
+
+    $this->assertSession()->responseContains('data-contextual-id="media:media=' . $media->id() . ':');
+  }
+
+}