If you want to stub out what INSTANCE returns, you can do it but it’s kind of nasty (using reflection & bytecode manipulation). I created & tested a simple project with three classes using the PowerMock 1.4.12 / Mockito 1.9.0. All classes were in the same package. SingletonObject.java public enum SingletonObject { INSTANCE; private int … Read more
You just need to change the mock method call to use doReturn. Example Partial Mocking of Private Method Test code @RunWith(PowerMockRunner.class) @PrepareForTest(MyClient.class) public class MyClientTest { @Test(expected = RuntimeException.class) public void testPublicAPI() throws Exception { MyClient classUnderTest = PowerMockito.spy(new MyClient()); // Change to this PowerMockito.doReturn(20).when(classUnderTest, “privateApi”, anyString(), anyInt()); classUnderTest.publicApi(); } } Console trace In publicApi … Read more
You need to put the class where the constructor is called into the @PrepareForTest annotation instead of the class which is being constructed – see Mock construction of new objects. In your case: ✗ @PrepareForTest(MyQueryClass.class) ✓ @PrepareForTest(A.class) More general: ✗ @PrepareForTest(NewInstanceClass.class) ✓ @PrepareForTest(ClassThatCreatesTheNewInstance.class)
The code you posted works for me with the latest version of Mockito and Powermockito. Maybe you haven’t prepared A? Try this: A.java public class A { private final String test; public A(String test) { this.test = test; } public String check() { return “checked ” + this.test; } } MockA.java import static org.hamcrest.MatcherAssert.assertThat; import … Read more
I don’t see a problem here. With the following code using the Mockito API, I managed to do just that : public class CodeWithPrivateMethod { public void meaningfulPublicApi() { if (doTheGamble(“Whatever”, 1 << 3)) { throw new RuntimeException(“boom”); } } private boolean doTheGamble(String whatever, int binary) { Random random = new Random(System.nanoTime()); boolean gamble = … Read more
What you want to do is a combination of part of 1 and all of 2. You need to use the PowerMockito.mockStatic to enable static mocking for all static methods of a class. This means make it possible to stub them using the when-thenReturn syntax. But the 2-argument overload of mockStatic you are using supplies … Read more