PowerMock Cheat Sheet

A cheat sheet in English by Ranjit

9,371 views 2,991 downloads 15 Nov 2015 History

PRs

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Run the test using PowerMockito
@RunWith(PowerMockRunner.class)

Prepare to test static methods of a class
@PrepareForTest(StaticClass.class)

Mocks

Create a mock
PowerMockito.mock(ClassToMock.class)

Do nothing when a method is called
PowerMockito.doNothing().when(mock).someMethod()

Return this value when a method is called
PowerMockito.when(mock.someMethod()).thenReturn(value)

Return this value when a method is called with any arg of type String
PowerMockito.when(mock.someMethod(any(String.class)).thenReturn(value)

Verify

Method was called on mock once
Mockito.verify(mock).someMethod()

Method was called at least n times
Mockito.verify(mock, times(n)).someMethod()

Method was never called
Mockito.verify(mock, never()).someMethod()

Method was called atleast, atmost n times
Mockito.verify(mock, atLeastOnce()).someMethod()
Mockito.verify(mock, atLeast(n)).someMethod()
Mockito.verify(mock, atMost(n)).someMethod()

Statics

Mock all static methods of a class
PowerMockito.mockStatic(ClassWithStatics.class)

Do nothing when static method is called
PowerMockito.doNothing().when(ClassWithStatics.class)

Prepare to verify
PowerMockito.verifyStatic()

Private

Do nothing when a private method is called
PowerMockito.doNothing().when(obj, "privateMethod", param1, param2)

Return some value when a private method is called
PowerMockito.when(obj, "privateMethod", param1, param2).thenReturn(value)

Verify that a private method was called
PowerMockito.verifyPrivate(obj).invoke("privateMethod", new Object[] { param1, param2 });

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