@Test public void testConfigureTransitionsWithUnspecifiedTransitions() {

	// Arrange:
	final Activity mockActivity = mock(TestActivity.class);
	final Window mockWindow = mock(Window.class);
	when(mockWindow.getDecorView()).thenReturn(null);
	when(mockActivity.getWindow()).thenReturn(mockWindow);
	final BaseNavigationalTransition navTransition = new TestTransition();
	// Act:
	navTransition.configureTransitions(mockActivity);
	// Assert:
	verifyZeroInteractions(mockWindow);
}