Merge "Fix DateTimeViewTest illegal access error"

    @UiThreadTest

    @Test

    public void additionalOnDetachedFromWindow_noException() {

        final DateTimeView dateTimeView = new DateTimeView(InstrumentationRegistry.getContext());

        dateTimeView.onAttachedToWindow();

        dateTimeView.onAttachedToWindow();

        final TestDateTimeView dateTimeView = new TestDateTimeView();

        dateTimeView.attachedToWindow();

        dateTimeView.detachedFromWindow();

        // Even there is an additional detach (abnormal), DateTimeView should not unregister

        // receiver again that raises "java.lang.IllegalArgumentException: Receiver not registered".

        dateTimeView.onDetachedFromWindow();

        dateTimeView.detachedFromWindow();

    }

    private static class TestDateTimeView extends DateTimeView {

        TestDateTimeView() {

            super(InstrumentationRegistry.getContext());

        }

        void attachedToWindow() {

            super.onAttachedToWindow();

        }

        void detachedFromWindow() {

            super.onDetachedFromWindow();

        }

    }

}