@Test
  public void testNoExtensionsConfigurator() throws Exception {
    URI uri = baseServerUri.resolve("/no-extensions");

    try (BlockheadClient client = new BlockheadClient(uri)) {
      client.addExtensions("identity");
      client.connect();
      client.sendStandardRequest();
      HttpResponse response = client.readResponseHeader();
      Assert.assertThat("response.extensions", response.getExtensionsHeader(), nullValue());
    }
  }
  @Test
  public void testAccessRequestCookies() throws Exception {
    BlockheadClient client = new BlockheadClient(server.getServerUri());
    client.setTimeout(1, TimeUnit.SECONDS);

    try {
      client.connect();
      client.sendStandardRequest();
      client.expectUpgradeResponse();

      client.write(new TextFrame().setPayload("info"));

      EventQueue<WebSocketFrame> frames = client.readFrames(1, 1, TimeUnit.SECONDS);
      WebSocketFrame resp = frames.poll();
      String textMsg = resp.getPayloadAsUTF8();

      assertThat(
          "DecoratedObjectFactory", textMsg, containsString("Object is a DecoratedObjectFactory"));
      assertThat("decorators.size", textMsg, containsString("Decorators.size = [1]"));
      assertThat(
          "decorator type",
          textMsg,
          containsString("decorator[] = " + DummyLegacyDecorator.class.getName()));
    } finally {
      client.close();
    }
  }
  @Test
  public void testCaptureRequestHeadersConfigurator() throws Exception {
    URI uri = baseServerUri.resolve("/capture-request-headers");

    try (BlockheadClient client = new BlockheadClient(uri)) {
      client.addHeader("X-Dummy: Bogus\r\n");
      client.connect();
      client.sendStandardRequest();
      client.expectUpgradeResponse();

      client.write(new TextFrame().setPayload("X-Dummy"));
      IncomingFramesCapture capture = client.readFrames(1, TimeUnit.SECONDS, 1);
      WebSocketFrame frame = capture.getFrames().poll();
      Assert.assertThat(
          "Frame Response", frame.getPayloadAsUTF8(), is("Request Header [X-Dummy]: \"Bogus\""));
    }
  }