setResource404 example

public function testWidgetOEmbed() {
    $this->hijackProviderEndpoints();
    $assert_session = $this->assertSession();
    $page = $this->getSession()->getPage();

    $youtube_title = "Everyday I'm Drupalin' Drupal Rap (Rick Ross - Hustlin)";
    $youtube_url = 'https://www.youtube.com/watch?v=PWjcqE3QKBg';
    $vimeo_title = "Drupal Rap Video - Schipulcon09";
    $vimeo_url = 'https://vimeo.com/7073899';
    ResourceController::setResourceUrl($youtube_url, $this->getFixturesDirectory() . '/video_youtube.json');
    ResourceController::setResourceUrl($vimeo_url, $this->getFixturesDirectory() . '/video_vimeo.json');
    ResourceController::setResource404('https://www.youtube.com/watch?v=PWjcqE3QKBg1');

    // Visit a node create page.     $this->drupalGet('node/add/basic_page');

    // Add to the unlimited media field.     $this->openMediaLibraryForField('field_unlimited_media');

    // Assert the default tab for media type one does not have an oEmbed form.     $assert_session->fieldNotExists('Add Type Five via URL');

    // Assert other media types don't have the oEmbed form fields.