@Test public void testIsRunning() {

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