Merge "Add test for regression in Animators" into udc-dev

        mActivityRule.runOnUiThread(() -> {});

    }

    @Test

    public void restartValueAnimator() throws Throwable {

        CountDownLatch latch = new CountDownLatch(1);

        ValueAnimator.AnimatorUpdateListener listener = new ValueAnimator.AnimatorUpdateListener() {

            @Override

            public void onAnimationUpdate(ValueAnimator animation) {

                if (((float) animation.getAnimatedValue()) != A1_START_VALUE) {

                    latch.countDown();

                }

            }

        };

        a1.addUpdateListener(listener);

        mActivityRule.runOnUiThread(() -> {

            a1.start();

        });

        // wait for a change in the value

        assertTrue(latch.await(2, TimeUnit.SECONDS));

        mActivityRule.runOnUiThread(() -> {

            a1.start();

            assertEquals(A1_START_VALUE, a1.getAnimatedValue());

        });

    }

    class MyUpdateListener implements ValueAnimator.AnimatorUpdateListener {

        boolean wasRunning = false;

        long firstRunningFrameTime = -1;