@Test public void testGetInterpolator() {

	// Arrange:
	final Animator mockAnimator = mock(Animator.class);
	final AnimatorWrapper wrapper = new AnimatorWrapper(mockAnimator);
	final TimeInterpolator mockInterpolator = mock(TimeInterpolator.class);
	when(mockAnimator.getInterpolator()).thenReturn(mockInterpolator);
	// Act + Assert:
	assertThat(wrapper.getInterpolator(), is(mockInterpolator));
	verify(mockAnimator).getInterpolator();
}