EchoControllerJerseyTest.java

public class EchoControllerJerseyTest extends JerseyTest {

  @Override
  protected Application configure() {
    return new ResourceConfig(EchoController.class);
  }

  @Test
  public void echo() throws Exception {
    String input = "input";
    String reverse = new StringBuilder(input).reverse().toString();

    Response response = target("echo")
        .path(input)
        .request()
        .get();

    assertEquals(Status.OK.getStatusCode(), response.getStatus());
    assertEquals(MediaType.APPLICATION_JSON_TYPE, response.getMediaType());
    assertEquals(reverse, response.readEntity(Echo.class).getEcho());  }

}