1/*
2 * Copyright (C) 2016 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.support.v7.app;
18
19import static android.support.test.espresso.Espresso.onView;
20import static android.support.test.espresso.assertion.ViewAssertions.matches;
21import static android.support.test.espresso.matcher.ViewMatchers.withId;
22import static android.support.test.espresso.matcher.ViewMatchers.withText;
23import static android.support.v7.app.NightModeActivity.TOP_ACTIVITY;
24import static android.support.v7.testutils.TestUtilsMatchers.isBackground;
25
26import static org.junit.Assert.assertFalse;
27
28import android.app.Instrumentation;
29import android.support.test.InstrumentationRegistry;
30import android.support.test.filters.LargeTest;
31import android.support.test.rule.ActivityTestRule;
32import android.support.test.runner.AndroidJUnit4;
33import android.support.v4.content.ContextCompat;
34import android.support.v7.appcompat.test.R;
35
36import org.junit.Before;
37import org.junit.Rule;
38import org.junit.Test;
39import org.junit.runner.RunWith;
40
41@LargeTest
42@RunWith(AndroidJUnit4.class)
43public class NightModeTestCase {
44    @Rule
45    public final ActivityTestRule<NightModeActivity> mActivityTestRule;
46
47    private static final String STRING_DAY = "DAY";
48    private static final String STRING_NIGHT = "NIGHT";
49
50    public NightModeTestCase() {
51        mActivityTestRule = new ActivityTestRule<>(NightModeActivity.class);
52    }
53
54    @Before
55    public void setup() {
56        // By default we'll set the night mode to NO, which allows us to make better
57        // assumptions in the test below
58        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
59    }
60
61    @Test
62    public void testLocalDayNightModeRecreatesActivity() throws Throwable {
63        // Verify first that we're in day mode
64        onView(withId(R.id.text_night_mode)).check(matches(withText(STRING_DAY)));
65
66        // Now force the local night mode to be yes (aka night mode)
67        setLocalNightModeAndWaitForRecreate(
68                mActivityTestRule.getActivity(), AppCompatDelegate.MODE_NIGHT_YES);
69
70        // Now check the text has changed, signifying that night resources are being used
71        onView(withId(R.id.text_night_mode)).check(matches(withText(STRING_NIGHT)));
72    }
73
74    @Test
75    public void testColorConvertedDrawableChangesWithNightMode() throws Throwable {
76        final NightModeActivity activity = mActivityTestRule.getActivity();
77        final int dayColor = ContextCompat.getColor(activity, R.color.color_sky_day);
78        final int nightColor = ContextCompat.getColor(activity, R.color.color_sky_night);
79
80        // Loop through and switching from day to night and vice-versa multiple times. It needs
81        // to be looped since the issue is with drawable caching, therefore we need to prime the
82        // cache for the issue to happen
83        for (int i = 0; i < 5; i++) {
84            // First force it to not be night mode
85            setLocalNightModeAndWaitForRecreate(TOP_ACTIVITY, AppCompatDelegate.MODE_NIGHT_NO);
86            // ... and verify first that we're in day mode
87            onView(withId(R.id.view_background)).check(matches(isBackground(dayColor)));
88
89            // Now force the local night mode to be yes (aka night mode)
90            setLocalNightModeAndWaitForRecreate(TOP_ACTIVITY, AppCompatDelegate.MODE_NIGHT_YES);
91            // ... and verify first that we're in night mode
92            onView(withId(R.id.view_background)).check(matches(isBackground(nightColor)));
93        }
94    }
95
96    @Test
97    public void testNightModeAutoRecreatesOnTimeChange() throws Throwable {
98        // Create a fake TwilightManager and set it as the app instance
99        final FakeTwilightManager twilightManager = new FakeTwilightManager();
100        TwilightManager.setInstance(twilightManager);
101
102        final NightModeActivity activity = mActivityTestRule.getActivity();
103        final AppCompatDelegateImplV14 delegate = (AppCompatDelegateImplV14) activity.getDelegate();
104
105        // Verify that we're currently in day mode
106        onView(withId(R.id.text_night_mode)).check(matches(withText(STRING_DAY)));
107
108        // Now set MODE_NIGHT_AUTO so that we will change to night mode automatically
109        setLocalNightModeAndWaitForRecreate(activity, AppCompatDelegate.MODE_NIGHT_AUTO);
110
111        // Assert that the original Activity has not been destroyed yet
112        assertFalse(activity.isDestroyed());
113
114        // Now update the fake twilight manager to be in night and trigger a fake 'time' change
115        mActivityTestRule.runOnUiThread(new Runnable() {
116            @Override
117            public void run() {
118                twilightManager.setIsNight(true);
119                delegate.getAutoNightModeManager().dispatchTimeChanged();
120            }
121        });
122
123        // Now wait for the recreate
124        InstrumentationRegistry.getInstrumentation().waitForIdleSync();
125
126        // Now check that the text has changed, signifying that night resources are being used
127        onView(withId(R.id.text_night_mode)).check(matches(withText(STRING_NIGHT)));
128    }
129
130    @Test
131    public void testNightModeAutoRecreatesOnResume() throws Throwable {
132        // Create a fake TwilightManager and set it as the app instance
133        final FakeTwilightManager twilightManager = new FakeTwilightManager();
134        TwilightManager.setInstance(twilightManager);
135
136        final NightModeActivity activity = mActivityTestRule.getActivity();
137
138        // Set MODE_NIGHT_AUTO so that we will change to night mode automatically
139        setLocalNightModeAndWaitForRecreate(activity, AppCompatDelegate.MODE_NIGHT_AUTO);
140        // Verify that we're currently in day mode
141        onView(withId(R.id.text_night_mode)).check(matches(withText(STRING_DAY)));
142
143        mActivityTestRule.runOnUiThread(new Runnable() {
144            @Override
145            public void run() {
146                final Instrumentation instrumentation =
147                        InstrumentationRegistry.getInstrumentation();
148                // Now fool the Activity into thinking that it has gone into the background
149                instrumentation.callActivityOnPause(activity);
150                instrumentation.callActivityOnStop(activity);
151
152                // Now update the twilight manager while the Activity is in the 'background'
153                twilightManager.setIsNight(true);
154
155                // Now tell the Activity that it has gone into the foreground again
156                instrumentation.callActivityOnStart(activity);
157                instrumentation.callActivityOnResume(activity);
158            }
159        });
160
161        // finally check that the text has changed, signifying that night resources are being used
162        onView(withId(R.id.text_night_mode)).check(matches(withText(STRING_NIGHT)));
163    }
164
165    private static class FakeTwilightManager extends TwilightManager {
166        private boolean mIsNight;
167
168        FakeTwilightManager() {
169            super(null, null);
170        }
171
172        @Override
173        boolean isNight() {
174            return mIsNight;
175        }
176
177        void setIsNight(boolean night) {
178            mIsNight = night;
179        }
180    }
181
182    private void setLocalNightModeAndWaitForRecreate(final AppCompatActivity activity,
183            @AppCompatDelegate.NightMode final int nightMode) throws Throwable {
184        final Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
185        mActivityTestRule.runOnUiThread(new Runnable() {
186            @Override
187            public void run() {
188                activity.getDelegate().setLocalNightMode(nightMode);
189            }
190        });
191        instrumentation.waitForIdleSync();
192    }
193}
194