Using mockito to test methods which throw uncaught custom exceptions

Question

How do I write a Mockito-based JUnit method to test this method adduser()? I tried writing one, but it's failing with an error message saying exception is not handled. The error is displayed for:

when(service.addUser("nginx")).thenReturn("apache"); 

Assume addUser() method in business class never catches any exception and rethrowing is not done.

class Business {     public User addUser() throws ServiceException{         User user = service.addUser("nginx");         return user;     } } 

TEST CASE METHOD :

Here in the test class I am mocking the service layer class with @Mock attribute and injecting it.

@Mock Service service;     @InjectMocks Business business = new Business();  @Test public void testAddUser() {     when(service.addUser("nginx")).thenReturn("apache");         User user = business.addUser("nginx");     assertNotNull(user); } 

Please tell me how to handle the exception scenario in the test case.

Answer 1

Declare the exception in the test method.

public void testAddUser() throws ServiceException { ... }