How to mock static method in Java?

Question

I have a class FileGenerator, and I\'m writing a test for the generateFile() method that should do the following:

1) it should call the sta

Answer 1

Working example:

@RunWith(PowerMockRunner.class)
@PrepareForTest({ClassStaticA.class, ClassStaticB.class})
public class ClassStaticMethodsTest {

    @Test
    public void testMockStaticMethod() {
        PowerMock.mockStatic(ClassStaticA.class);
        EasyMock.expect(ClassStaticA.getMessageStaticMethod()).andReturn("mocked message");
        PowerMock.replay(ClassStaticA.class);
        assertEquals("mocked message", ClassStaticA.getMessageStaticMethod());
    }

Answer 2

I have no experience with PowerMock, but since you didn't get an answer yet I'm just been reading through the documentation to see if I can help you a bit on your way.

I found that you need to prepare PowerMock so that I knows which static methods it needs to prepare to be mocked. Like so:

@RunWith(PowerMockRunner.class)
@PrepareForTest(BlockAbstractFactory.class) // <<=== Like that
public class testFileGenerator {
    // rest of you class
}

Here you can find more information.

Does that help?