1/*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import android.support.test.InstrumentationRegistry;
20import android.support.test.annotation.UiThreadTest;
21import android.support.test.filters.SmallTest;
22import android.support.test.runner.AndroidJUnit4;
23
24import org.junit.Test;
25import org.junit.runner.RunWith;
26
27@RunWith(AndroidJUnit4.class)
28@SmallTest
29public class DateTimeViewTest {
30
31    @UiThreadTest
32    @Test
33    public void additionalOnDetachedFromWindow_noException() {
34        final DateTimeView dateTimeView = new DateTimeView(InstrumentationRegistry.getContext());
35        dateTimeView.onAttachedToWindow();
36        dateTimeView.onAttachedToWindow();
37        // Even there is an additional detach (abnormal), DateTimeView should not unregister
38        // receiver again that raises "java.lang.IllegalArgumentException: Receiver not registered".
39        dateTimeView.onDetachedFromWindow();
40    }
41}
42