CODEWITHSUNDEEP
javaspringunit-testingjunitmockito
user1999453
user1999453

Reputation: 1433

How to mock the return of a public method called in a private method inSpring

I have a private method called getSubject in a class which i have just implemented. I am trying to carry out a unit test on the private method but my issue is that the private method getSubject is calling another method getSubjectOracle() (note:getSubjectOracle is a public method in a jar file) which returns a String subject. A pseoudocode is shown below:

public class Service{

    private oracleDao

    //setter for oracle dao avilable


    private String getSubject(String id,Stringountry){

        String subject = oracleDao.getSubjectOracle(String id,String country)

        return subject;

    }

}

Any idea how i can mock the return of the method oracleDao.getSubjectOracle(String id,String country) in order to carry unit test for method getSubject(String id, String country) pls?

I have search online of helpful resouces but could not get any.

Thanks in advance.

Upvotes: 0

Views: 1845

Answers (2)

Sotirios Delimanolis
Sotirios Delimanolis

Reputation: 280112

If you are trying to test Service, then you have to mock oracleDao as well and make its getSubjectOracle() method return the String you want.

I'm assuming you aren't testing getSubject() but a method that calls getSubject().

Upvotes: 1

Andreas Gnyp
Andreas Gnyp

Reputation: 1840

One way could be to write a setter for oracleDao. There you can set a mock instead of the real thing. For example write your own oracleDao that does what you want. In the @Before method you would inject the mock oracleDao.

All this is nicer with a framework like Mockito. It would look like this:

@Mock
YourDaoThing mock;

@Before
public setUp(){
  MockitoAnnotation.initMocks(this);
  service = new Service();
  service.setDao(mock);
}

@Test
public testGetSubject(){
  String someString = "whatever";
  when(mock.getSubjectOracle(id,country)).thenReturn(someString)

  assertEquals(expect, service.callToTheMethodYouTest())

}

Upvotes: 1

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