mock resource in service java (mockito)

Question

I am doing some tests for the class Export I need to mock a method so I made a mockito (I am new to Mockito)

public Class ExportServiceImpl implements ExportService{

   @Autowired
   Service service

   public void export(){

      String exportString = service.getPath();
      domoreStuff() ....

  }

And

  public Class ServiceImpl implements Service(){

      public String getPath(){
          return "thePath";
      }
  }

I need to mock the getPath() method so I did in the TestNG

 public class ExportTestNG(){

    public textExport(){

     Service serviceMock = Mockito.mock(Service.class);
     Mockito.when(serviceMock.getData()).thenReturn("theNewPath");
     System.out.println("serviceMock.getData() : " + serviceMock.getData()); // prints "theNewPath", OK

     exportService.export();  // the getData() is not the mockito one

    }
 }

I may have not correclt mockito and I may not have understood how it works. Any idea ?

possible duplicate of [Injecting Mockito mocks into a Spring bean](http://stackoverflow.com/questions/2457239/injecting-mockito-mocks-into-a-spring-bean) — Mike B, Apr 30 '14 at 16:34

score 4 · Answer 1 · answered Apr 30 '14 at 16:45

4

You can use Mockito to inject the mocks for you and avoid having to add setter methods.

@RunWith(MockitoJUnitRunner.class)
public class ExportTestNG(){

    @InjectMocks
    private ExportServiceImpl exportService;

    @Mock
    private Service serviceMock;

    @Before
    public void setup() {
        MockitoAnnotations.initMocks(this);
    }

    public textExport(){                            
        Mockito.when(serviceMock.getData()).thenReturn("theNewPath");
        exportService.export(); 
    }
}

answered Apr 30 '14 at 16:45

Mike B

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+1 Adding a setter that's only used in a test is a nasty habit. :P – Don Branson Apr 30 '14 at 16:57
1

I need to add Autowired in addition to InjectMocks in exportService and it works ! – Makoto May 05 '14 at 07:27
You don't need the initMocks call, thouugh. @RunWith covers that. – Don Branson May 09 '14 at 02:12

DwB · Accepted Answer · 2014-04-30T16:39:41.710

0

You need to wire the mock service into the exportService object. If you have a setter for the service member variable then do this:

exportService.setService(serviceMock);// add this line.
exportService.export();

If you don't have a setter you will need to perform the wiring before calling export. Options for this include:

Set the value of the service member variable using reflection.
Write a test-only version of the Service and use a test-only version of the spring configuration xml files.
Something else (that I have never done and thus don't know about).

edited Apr 30 '14 at 16:39

answered Apr 30 '14 at 16:34

DwB

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"Write a test-only version of the Service " NO! Then you're testing code that's never used, and not testing the code that is used. Waste of time. – Don Branson Apr 30 '14 at 17:06
2

a test only version of the service is to support the testing of the exportService, just like using a Mocking library. The code being tested is not the test only version of the service but the class that is using the test only version of the service. – DwB Apr 30 '14 at 18:16
Ah, a mock service then. That's normally what it would be called. – Don Branson May 01 '14 at 20:39

mock resource in service java (mockito)

2 Answers2