Jersey - How to mock service

Question

I am using \"Jersey Test Framework\" for unit testing my webservice.

Here is my resource class :

import javax.ws.rs.GET;
import javax.ws.rs.Path;
imp         


        

Answer 1

Here is how I did it with Jersey 2.20, Spring 4.1.4 RELEASE, Mockito 1.10.8, and TestNG 6.8.8.

@Test
public class CasesResourceTest extends JerseyTestNg.ContainerPerMethodTest {

    @Mock
    private CaseService caseService;

    @Mock
    private CaseConverter caseConverter;    

    @Mock
    private CaseRepository caseRepository;

    private CasesResource casesResource;

    @Override
    protected Application configure() {

        MockitoAnnotations.initMocks(this);
        casesResource = new CasesResource();

        AbstractBinder binder = new AbstractBinder() {

            @Override
            protected void configure() {
                bindFactory(new InstanceFactory(caseConverter)).to(CaseConverter.class);
                bindFactory(new InstanceFactory(caseService)).to(CaseService.class);
            }
        };

        return new ResourceConfig()
            .register(binder)
            .register(casesResource)
            .property("contextConfigLocation", "solve-scm-rest/test-context.xml");
    }

    public void getAllCases() throws Exception {

        when(caseService.getAll()).thenReturn(Lists.newArrayList(new solve.scm.domain.Case()));
        when(caseConverter.convertToApi(any(solve.scm.domain.Case.class))).thenReturn(new Case());

        Collection cases = target("/cases").request().get(new GenericType>(){});

        verify(caseService, times(1)).getAll();
        verify(caseConverter, times(1)).convertToApi(any(solve.scm.domain.Case.class));

        assertThat(cases).hasSize(1);
    }
}

You also need this class which makes the binding code above a bit easier:

public class InstanceFactory implements Factory {

    private T instance;

    public InstanceFactory(T instance) {
        this.instance = instance;
    }

    @Override
    public void dispose(T t) {
    }

    @Override
    public T provide() {
        return instance;
    }

}

Edited as pr. request. This is the contents of my test-context.xml:

It turns out that my test-context.xml does not instantiate any beans nor scan any packages, in fact, it does not do anything at all. I guess I just put it there in case I might need it.