Rolando Payán Mosqueda
--- a/core/modules/media/tests/src/Functional/FieldFormatter/OEmbedFormatterTest.php
+++ b/core/modules/media/tests/src/Functional/FieldFormatter/OEmbedFormatterTest.php
+    ResourceController::setResourceUrl('https://vimeo.com/7073899', $this->getFixturesDirectory() . '/video_vimeo.json');
+    UrlResolver::setEndpointUrl('https://vimeo.com/7073899', 'video_vimeo.json');
+
+    $entity = Media::create([
+      'bundle' => $media_type->id(),
+      $source_field->getName() => 'https://vimeo.com/7073899',
+    ]);
+    $entity->save();
+
+    $this->drupalGet($entity->toUrl());
+    $assert = $this->assertSession();
+    $assert->statusCodeEquals(200);
+    // Check that the width and height attributes are not empty.
+    $element = $assert->elementExists('css', 'iframe');
+    $this->assertNotEmpty($element->getAttribute('width'));
+    $this->assertNotEmpty($element->getAttribute('height'));