How to get instance of javax.ws.rs.core.UriInfo

Question

Is there any implementation of javax.ws.rs.core.UriInfo which I can use to create an instance quickly for testing. This interface is long, I just need to test s

Answer 1

I was writing integration tests, so cannot use mock stuff

I used some code for jersey tests

http://www.programcreek.com/java-api-examples/index.php?source_dir=JerseyTest-master/jersey-tests/src/test/java/com/sun/jersey/impl/uri/UriPathHttpRequestTest.java

WebApplicationImpl wai = new WebApplicationImpl();
ContainerRequest r = new TestHttpRequestContext(wai,
            "GET", null,
            "/mycontextpath/rest/data", "/mycontextpath/");
UriInfo uriInfo = new WebApplicationContext(wai, r, null);
myresources.setUriInfo(uriInfo);

and

private static class TestHttpRequestContext extends ContainerRequest {
    public TestHttpRequestContext(
            WebApplication wa,
            String method,
            InputStream entity,
            String completeUri,
            String baseUri) {
        super(wa, method, URI.create(baseUri), URI.create(completeUri), new InBoundHeaders(), entity);
    }
}

If you get any errors about request scope beans see request scoped beans in spring testing

Answer 2

You either mock it, or use something like http://arquillian.org/

Answer 3

You simply inject it with the @Context annotation, as a field or method parameter.

@Path("resource")
public class Resource {
    @Context
    UriInfo uriInfo;

    public Response doSomthing(@Context UriInfo uriInfo) {

    }
}

Other than your resource classes, it can also be injected into other providers, like ContainerRequestContext, ContextResolver, MessageBodyReader etc.

EDIT

Actually I want to write a junit test for a function similar to your doSomthing() function.

I didn't pick that up in your post. But a couple options I can think of for unit tests

1. Simply create a stub, implementing only the methods you use.

2. Use a Mocking framework like Mockito, and mock the UriInfo. Example

   @Path("test")
   public class TestResource { 
       public String doSomthing(@Context UriInfo uriInfo){
           return uriInfo.getAbsolutePath().toString();
       }
   }
   [...]
   @Test
   public void doTest() {
       UriInfo uriInfo = Mockito.mock(UriInfo.class);
       Mockito.when(uriInfo.getAbsolutePath())
           .thenReturn(URI.create("http://localhost:8080/test"));
       TestResource resource = new TestResource();
       String response = resource.doSomthing(uriInfo);
       Assert.assertEquals("http://localhost:8080/test", response);
   }
   

   You'll need to add this dependency

   <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-all</artifactId>
       <version>1.9.0</version>
   </dependency>
   

If you want to do an integration test, where the actual UriInfo is injected, you should look into Jersey Test Framework

Here's a complete example with the Jersey Test Framework

public class ResourceTest extends JerseyTest {

    @Path("test")
    public static class TestResource {
        @GET
        public Response doSomthing(@Context UriInfo uriInfo) {
            return Response.ok(uriInfo.getAbsolutePath().toString()).build();
        }
    }

    @Override
    public Application configure() {
        return new ResourceConfig(TestResource.class);
    }

    @Test
    public void test() {
        String response = target("test").request().get(String.class);
        Assert.assertTrue(response.contains("test"));
    }
}

Just add this dependency

<dependency>
    <groupId>org.glassfish.jersey.test-framework.providers</groupId>
    <artifactId>jersey-test-framework-provider-inmemory</artifactId>
    <version>${jersey2.version}</version>
</dependency>

It uses an in-memory container, which is the most efficient for small tests. There are other containers with Servlet support if needed. Just see the link I posted above.