Provider example

  public function testResourcePassedToPreprocess() {
    $hash = $this->container->get('media.oembed.iframe_url_helper')
      ->getHash('', 0, 0);

    $url_resolver = $this->prophesize('\Drupal\media\OEmbed\UrlResolverInterface');
    $resource_fetcher = $this->prophesize('\Drupal\media\OEmbed\ResourceFetcherInterface');

    $provider = new Provider('YouTube', 'https://youtube.com', [
      [
        'url' => 'https://youtube.com/foo',
      ],
    ]);
    $resource = Resource::rich('<iframe src="https://youtube.com/watch?feature=oembed"></iframe>', 320, 240, $provider);

    $resource_fetcher->fetchResource(Argument::cetera())->willReturn($resource);

    $this->container->set('media.oembed.url_resolver', $url_resolver->reveal());
    $this->container->set('media.oembed.resource_fetcher', $resource_fetcher->reveal());

    

        $this->logger->warning('Remote oEmbed providers database returned invalid or empty list. Using previously stored data. This may contain out of date information.');
        return $stored['data'];
      }
      // We have no previous data and the current data is corrupt.       throw new ProviderException('Remote oEmbed providers database returned invalid or empty list.');
    }

    $keyed_providers = [];
    foreach ($providers as $provider) {
      try {
        $name = (string) $provider['provider_name'];
        $keyed_providers[$name] = new Provider($provider['provider_name'], $provider['provider_url'], $provider['endpoints']);
      }
      catch (ProviderException $e) {
        // Skip invalid providers, but log the exception message to help with         // debugging.         $this->logger->warning($e->getMessage());
      }
    }

    $this->keyValue->set('oembed_providers', [
      'data' => $keyed_providers,
      'expires' => $current_time + $this->maxAge,
    ]);

->setAbsolute()
      ->toString();

    /** @var \Drupal\media_test_oembed\ProviderRepository $provider_repository */
    $provider_repository = $this->container->get('media.oembed.provider_repository');

    foreach ($providers as &$provider) {
      foreach ($provider['endpoints'] as &$endpoint) {
        $endpoint['url'] = $endpoint_url;
      }
      $provider_repository->setProvider(
        new Provider($provider['provider_name'], $provider['provider_url'], $provider['endpoints'])
      );
    }
  }

}