PowerMock 테스트, 객체 생성시 예외 발생

단위 테스트시에 객체 생성이 될 때, 예외가 발생을 하게 해야 하는 경우가 있다.

이런 경우에 PowerMock을 이용하여 테스트한다.

- 객체 생성시 예외 발생시키기 -

import org.junit.Test; import org.junit.runner.RunWith; import org.mockito.InjectMocks; import org.mockito.Mock; import org.mockito.runners.MockitoJUnitRunner; import org.powermock.core.classloader.annotations.PowerMockIgnore; import org.powermock.core.classloader.annotations.PrepareForTest; import org.powermock.modules.junit4.PowerMockRunner; import javax.servlet.ServletContext; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import static org.junit.Assert.assertNotNull; import static org.junit.Assert.assertNull; import static org.mockito.Mockito.mock; import static org.powermock.api.mockito.PowerMockito.whenNew; @PowerMockIgnore({"javax.crypto.*", "net.spy.memcached.*"}) @RunWith(PowerMockRunner.class) @PrepareForTest(value = {User.class, UserFactory.class}) public class UserFactoryTest { @InjectMocks private UserFactory userFactory; @Test public void createUser_예외_실패() throws Exception { // Given HttpServletRequest request = mock(HttpServletRequest.class); HttpServletResponse response = mock(HttpServletResponse.class); // When whenNew(User.class).withAnyArguments().thenThrow(new UnsupportedOperationException()); User user = userFactory.createUser(request, response); // Then assertNull(user); } }