A jUnit test for Dropwizard/Jersey Resource

test resource dropwizard

public class HelloResourceTest {

    @Rule
    public ResourceTestRule resource = ResourceTestRule.builder()
            .addResource(new HelloResource()).build();

    @Test
    public void testGetGreeting() {
        String expected = "Hello world!";
        //Obtain client from @Rule.
        Client client = resource.client();
        //Get WebTarget from client using URI of root resource.
        WebTarget helloTarget = client.target("http://localhost:8080/hello");
        //To invoke response we use Invocation.Builder
        //and specify the media type of representation asked from resource.
        Invocation.Builder builder = helloTarget.request(MediaType.TEXT_PLAIN);
        //Obtain response.
        Response response = builder.get();

        //Do assertions.
        assertEquals(Response.Status.OK, response.getStatusInfo());
        String actual = response.readEntity(String.class);
        assertEquals(expected, actual);

    }
}