private void assertIncoming(byte[] raw, String... expectedTextDatas) {
    WebSocketPolicy policy = WebSocketPolicy.newClientPolicy();

    DeflateFrameExtension ext = new DeflateFrameExtension();
    ext.setBufferPool(bufferPool);
    ext.setPolicy(policy);

    ExtensionConfig config = ExtensionConfig.parse("deflate-frame");
    ext.setConfig(config);

    // Setup capture of incoming frames
    IncomingFramesCapture capture = new IncomingFramesCapture();

    // Wire up stack
    ext.setNextIncomingFrames(capture);

    Parser parser = new UnitParser(policy);
    parser.configureFromExtensions(Collections.singletonList(ext));
    parser.setIncomingFramesHandler(ext);

    parser.parse(ByteBuffer.wrap(raw));

    int len = expectedTextDatas.length;
    capture.assertFrameCount(len);
    capture.assertHasFrame(OpCode.TEXT, len);

    int i = 0;
    for (WebSocketFrame actual : capture.getFrames()) {
      String prefix = "Frame[" + i + "]";
      Assert.assertThat(prefix + ".opcode", actual.getOpCode(), is(OpCode.TEXT));
      Assert.assertThat(prefix + ".fin", actual.isFin(), is(true));
      Assert.assertThat(
          prefix + ".rsv1", actual.isRsv1(), is(false)); // RSV1 should be unset at this point
      Assert.assertThat(prefix + ".rsv2", actual.isRsv2(), is(false));
      Assert.assertThat(prefix + ".rsv3", actual.isRsv3(), is(false));

      ByteBuffer expected = BufferUtil.toBuffer(expectedTextDatas[i], StandardCharsets.UTF_8);
      Assert.assertThat(
          prefix + ".payloadLength", actual.getPayloadLength(), is(expected.remaining()));
      ByteBufferAssert.assertEquals(prefix + ".payload", expected, actual.getPayload().slice());
      i++;
    }
  }