@Test public void testRemoveAd() { AMItemService instance = new AMItemService(); Whitebox.setInternalState(instance, "storeService", storeService); Ad.Status status = Ad.Status.OK; String adId = "1234"; // Setting up EasyMock.expect(storeService.removeMarketAd(adId)).andReturn(status); PowerMock.replayAll(); Ad.Status response = instance.removeAd(adId); PowerMock.verifyAll(); Assert.assertTrue(response.equals(status)); }