Menu
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.
283
Mockito provides the capability to a mock to throw exceptions, so exception handling can be tested. Take a look at the following code snippet. //add the behavior to throw exception doThrow(new Runtime Exception("divide operation not implemented")) .
Mockito provides following methods that can be used to mock void methods. doAnswer() : We can use this to perform some operations when a mocked object method is called that is returning void. doThrow() : We can use doThrow() when we want to stub a void method that throws exception.
For Mockito, there is no direct support to mock private and static methods. In order to test private methods, you will need to refactor the code to change the access to protected (or package) and you will have to avoid static/final methods.
Declare the exception in the test method.
public void testAddUser() throws ServiceException { ... } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
