SettableDrawableTest.java 文件源码

@Test
public void testSetCurrent() {
  Drawable.Callback callback = mock(Drawable.Callback.class);
  mSettableDrawable.setCallback(callback);
  mSettableDrawable.setDrawable(mUnderlyingDrawable1);
  verify(mUnderlyingDrawable0).setCallback(null);
  verify(mUnderlyingDrawable1).setCallback(isNotNull(Drawable.Callback.class));
  verify(callback).invalidateDrawable(mSettableDrawable);
}