1/*
2 * Copyright 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 androidx.fragment.app;
18
19import static org.hamcrest.CoreMatchers.is;
20import static org.hamcrest.MatcherAssert.assertThat;
21import static org.junit.Assert.assertTrue;
22
23import android.os.Build;
24import android.support.test.filters.MediumTest;
25import android.support.test.filters.SdkSuppress;
26import android.support.test.rule.ActivityTestRule;
27import android.support.test.runner.AndroidJUnit4;
28
29import androidx.fragment.app.test.NonConfigOnStopActivity;
30import androidx.testutils.FragmentActivityUtils;
31
32import org.junit.Rule;
33import org.junit.Test;
34import org.junit.runner.RunWith;
35
36@MediumTest
37@RunWith(AndroidJUnit4.class)
38public class FragmentManagerNonConfigTest {
39
40    @Rule
41    public ActivityTestRule<NonConfigOnStopActivity> mActivityRule =
42            new ActivityTestRule<>(NonConfigOnStopActivity.class);
43
44    /**
45     * When a fragment is added during onStop(), it shouldn't show up in non-config
46     * state when restored before P, because OnSaveInstanceState was already called.
47     */
48    @Test
49    @SdkSuppress(maxSdkVersion = Build.VERSION_CODES.O_MR1)
50    public void nonConfigStop() throws Throwable {
51        FragmentActivity activity = FragmentActivityUtils.recreateActivity(mActivityRule,
52                mActivityRule.getActivity());
53
54        // A fragment was added in onStop(), but we shouldn't see it here...
55        assertTrue(activity.getSupportFragmentManager().getFragments().isEmpty());
56    }
57
58    /**
59     * When a fragment is added during onStop(), it shouldn't show up in non-config
60     * state when restored after (>=) P, because OnSaveInstanceState isn't yet called.
61     */
62    @Test
63    @SdkSuppress(minSdkVersion = Build.VERSION_CODES.P)
64    public void nonConfigStopSavingFragment() throws Throwable {
65        FragmentActivity activity = FragmentActivityUtils.recreateActivity(mActivityRule,
66                mActivityRule.getActivity());
67
68        assertThat(activity.getSupportFragmentManager().getFragments().size(), is(1));
69    }
70}
71