DrawableCrossFadeViewAnimationTest.java 文件源码

@Test
public void testSetsTransitionDrawableIfPreviousIsNotNull() {
  Drawable previous = new ColorDrawable(Color.WHITE);
  when(harness.adapter.getCurrentDrawable()).thenReturn(previous);
  harness.animation.transition(harness.current, harness.adapter);

  verify(harness.adapter).setDrawable(any(TransitionDrawable.class));
}