PowerMocking static does not return expected object

Question

I have a problem mocking Calendar.getInstance(). As you now this method returns a Calendar - the object I am mocking.

Right now my code looks like this:

Answer 1

It seems that you need to add the target test class in the PrepareForTest tag:
@PrepareForTest({ Calendar.class, Surveillance.class })

@RunWith(PowerMockRunner.class)
@PrepareForTest({ Calendar.class, Surveillance.class })
public class SurveillanceDatabaseTest {
    @Test
    public void testFailingDatabase() throws Exception {
        mockStatic(Calendar.class);
        Calendar calendar = new GregorianCalendar();
        calendar.add(Calendar.HOUR, 1);
        when(Calendar.getInstance()).thenReturn(calendar);
        final Surveillance surveillance = new Surveillance();
        surveillance.checkDatabase();
   }
}

Even Tom Tresansky's example above will need it if we move the Surveillance class to somewhere outside MockCalendarTest class.