class ResourceFetcherTest

class ResourceFetcherTest extends UnitTestCase {
  
  /**
   * Tests that resources are fetched with a hard-coded timeout.
   */
  public function testFetchTimeout() : void {
    $url = 'https://example.com/oembed?url=resource';
    $headers = [
      'Content-Type' => [
        'text/javascript',
      ],
    ];
    $body = Json::encode([
      'version' => '1.0',
      'type' => 'video',
      'html' => 'test',
    ]);
    $response = new Response(200, $headers, $body);
    $client = $this->prophesize(Client::class);
    $client->request('GET', $url, [
      RequestOptions::TIMEOUT => 5,
    ])
      ->shouldBeCalled()
      ->willReturn($response);
    $fetcher = new ResourceFetcher($client->reveal(), $this->createMock('\\Drupal\\media\\OEmbed\\ProviderRepositoryInterface'), new NullBackend('default'));
    $fetcher->fetchResource($url);
  }
  
  /**
   * Tests how the resource fetcher handles unknown Content-Type headers.
   *
   * @covers ::fetchResource
   */
  public function testUnknownContentTypeHeader() : void {
    $headers = [
      'Content-Type' => [
        'text/html',
      ],
    ];
    $body = Json::encode([
      'version' => '1.0',
      'type' => 'video',
      'html' => 'test',
    ]);
    $valid_response = new Response(200, $headers, $body);
    // Strip off the trailing '}' to produce a response that will cause a JSON
    // parse error.
    $invalid_response = new Response(200, $headers, rtrim($body, '}'));
    // A response that is valid JSON, but does not decode to an array, should
    // produce an exception as well.
    $non_array_response = new Response(200, $headers, '"Valid JSON, but not an array..."');
    $mock_handler = new MockHandler([
      $valid_response,
      $invalid_response,
      $non_array_response,
    ]);
    $client = new Client([
      'handler' => HandlerStack::create($mock_handler),
    ]);
    $providers = $this->createMock('\\Drupal\\media\\OEmbed\\ProviderRepositoryInterface');
    $fetcher = new ResourceFetcher($client, $providers, new NullBackend('default'));
    /** @var \Drupal\media\OEmbed\Resource $resource */
    $resource = $fetcher->fetchResource('valid');
    // The resource should have been successfully decoded as JSON.
    $this->assertSame('video', $resource->getType());
    $this->assertSame('test', $resource->getHtml());
    // Invalid JSON should throw an exception.
    try {
      $fetcher->fetchResource('invalid');
      $this->fail('Expected a ResourceException to be thrown for invalid JSON.');
    } catch (ResourceException $e) {
      $this->assertSame('Error decoding oEmbed resource: Syntax error', $e->getMessage());
    }
    // Valid JSON that does not produce an array should also throw an exception.
    $this->expectException(ResourceException::class);
    $this->expectExceptionMessage('The oEmbed resource could not be decoded.');
    $fetcher->fetchResource('non_array');
  }

}