@Deployment(testable = false)
public static WebArchive createDeployment() {
    return ShrinkWrap.create(WebArchive.class)
            .addClasses(MyEndpoint.class,
                    MyEndpointConfiguration.class,
                    MyMessage.class,
                    MyMessageEncoder.class,
                    MyMessageDecoder.class);
}

@Test
public void testEndpoint() throws URISyntaxException, DeploymentException, IOException, InterruptedException {
    final String JSON = "{\"apple\":\"red\",\"banana\":\"yellow\"}";
    Session session = connectToServer(MyClient.class);
    assertNotNull(session);
    assertTrue(MyClient.latch.await(2, TimeUnit.SECONDS));
    assertEquals(JSON, MyClient.response.toString());
}