Testing my UserService class, but need to mock a method that gets called at the same time

Question

I am testing my userService classes method, but the method I am testing makes a call to another method.

@Test
public void testSomething() {
  HelloWorldResponse hwResponse = ....;

  expect(userDaoMock.helloWorldCall(....).andReturn(hwResponse);

  reploy();

  UserResponseCode response = userService.register(user);

  assertEquals(UserResponseCode.OK, response);
}

Now say my register method makes a call to another method in my userService class, how can I mock that call?

From what I understand I can't do that since I am not wrapping the entire userService class in a mock right?

Update

When I debug my register methods' junit test, I see this:

SomeThing thing = helloWorldCall(...);  // userService.helloWorldCall(...);

Now the method helloWorldCall just returns what a userDao returns, and I have already mocked that in my test, but for some reason it is returning null when I trace execution, so thing == null.

Why is it null, shouldn't it have the value that is returned by my mock?

The UserService#helloWorldCall code is below, again it simply returns what the userDao returns which again I have mocked as you can see above which returns that response I hard coded in my unit test. Why is it null when I trace/debug the unit test?

public HelloWordResponse helloWorldCall(...) {
  return userDao.helloWorldCall(..)
}

Why do you need to the mock out the method if it's also in userService? — jeff, Nov 10 '12 at 21:03
@jeff see my updates, the return value is null even though I am mocking the response. — Blankman, Nov 10 '12 at 21:18
Where is the code where you wire userDaoMock into the userService being tested? — jeff, Nov 10 '12 at 21:27

score 0 · Answer 1 · answered Nov 10 '12 at 21:26

0

It kills the scope here, however you could use Spring and work with different contexts. Both your actual service and you mock implement the same interface. In your tests you would wire the mock and at runtime the actuall implementation.

answered Nov 10 '12 at 21:26

Udo Held

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score 0 · Accepted Answer · answered Nov 26 '12 at 03:07

0

I am using a mockscontrol

private IMocksControl mockMaker;

So I have to use

mockMaker.replay();
mockMaker.verify();

It works now since I had many different mock objects.

answered Nov 26 '12 at 03:07

Blankman

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Testing my UserService class, but need to mock a method that gets called at the same time

2 Answers2