How to mock void methods with Mockito

manpreet Best Answer 2 years ago

_x000D_ Take a look at the Mockito API docs. As the linked document mentions (Point # 12) you can use any of the doThrow(),doAnswer(),doNothing(),doReturn() family of methods from Mockito framework to mock void methods. For example, Mockito.doThrow(new Exception()).when(instance).methodName(); or if you want to combine it with follow-up behavior, Mockito.doThrow(new Exception()).doNothing().when(instance).methodName(); Presuming that you are looking at mocking the setter setState(String s) in the class World below is the code uses doAnswer method to mock the setState. World mockWorld = mock(World.class); doAnswer(new Answer() { public Void answer(InvocationOnMock invocation) { Object[] args = invocation.getArguments(); System.out.println("called with arguments: " + Arrays.toString(args)); return null; } }).when(mockWorld).setState(anyString());

REPLY

0 views

0 likes

0 shares

Facebook Twitter Linked In WhatsApp