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      1 /*
      2  * Copyright (C) 2017 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 
     17 package com.android.server.power;
     18 
     19 import android.content.Context;
     20 import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest;
     21 import android.os.PowerManager;
     22 import android.os.PowerSaveState;
     23 import android.test.AndroidTestCase;
     24 import android.test.suitebuilder.annotation.SmallTest;
     25 import android.text.TextUtils;
     26 import java.io.File;
     27 import java.io.FileWriter;
     28 import java.io.IOException;
     29 import java.io.OutputStreamWriter;
     30 import org.junit.Rule;
     31 import org.junit.rules.TemporaryFolder;
     32 import org.mockito.Mock;
     33 import org.mockito.MockitoAnnotations;
     34 
     35 import static android.os.PowerManagerInternal.WAKEFULNESS_ASLEEP;
     36 import static android.os.PowerManagerInternal.WAKEFULNESS_AWAKE;
     37 import static android.os.PowerManagerInternal.WAKEFULNESS_DOZING;
     38 import static android.os.PowerManagerInternal.WAKEFULNESS_DREAMING;
     39 import static com.google.common.truth.Truth.assertThat;
     40 import static org.mockito.Matchers.anyBoolean;
     41 import static org.mockito.Matchers.eq;
     42 import static org.mockito.Mockito.when;
     43 
     44 /**
     45  * Tests for {@link com.android.server.power.PowerManagerService}
     46  */
     47 public class PowerManagerServiceTest extends AndroidTestCase {
     48     private static final float PRECISION = 0.001f;
     49     private static final float BRIGHTNESS_FACTOR = 0.7f;
     50     private static final boolean BATTERY_SAVER_ENABLED = true;
     51     private static final String LAST_REBOOT_REASON = "last_reboot_reason";
     52 
     53     private @Mock BatterySaverPolicy mBatterySaverPolicy;
     54     private PowerManagerService mService;
     55     private PowerSaveState mPowerSaveState;
     56     private DisplayPowerRequest mDisplayPowerRequest;
     57     private File mTempReason;
     58 
     59     @Rule
     60     public TemporaryFolder temporaryFolder = new TemporaryFolder();
     61 
     62     public void setUp() throws Exception {
     63         super.setUp();
     64         MockitoAnnotations.initMocks(this);
     65 
     66         mPowerSaveState = new PowerSaveState.Builder()
     67                 .setBatterySaverEnabled(BATTERY_SAVER_ENABLED)
     68                 .setBrightnessFactor(BRIGHTNESS_FACTOR)
     69                 .build();
     70         when(mBatterySaverPolicy.getBatterySaverPolicy(
     71                 eq(BatterySaverPolicy.ServiceType.SCREEN_BRIGHTNESS), anyBoolean()))
     72                 .thenReturn(mPowerSaveState);
     73         mDisplayPowerRequest = new DisplayPowerRequest();
     74         mService = new PowerManagerService(getContext(), mBatterySaverPolicy);
     75         temporaryFolder.create();
     76         mTempReason = temporaryFolder.newFile(LAST_REBOOT_REASON);
     77     }
     78 
     79     @SmallTest
     80     public void testUpdatePowerScreenPolicy_UpdateDisplayPowerRequest() {
     81         mService.updatePowerRequestFromBatterySaverPolicy(mDisplayPowerRequest);
     82         assertThat(mDisplayPowerRequest.lowPowerMode).isEqualTo(BATTERY_SAVER_ENABLED);
     83         assertThat(mDisplayPowerRequest.screenLowPowerBrightnessFactor)
     84                 .isWithin(PRECISION).of(BRIGHTNESS_FACTOR);
     85     }
     86 
     87     @SmallTest
     88     public void testGetLastShutdownReasonInternal() {
     89         try {
     90             FileWriter writer = new FileWriter(mTempReason);
     91             writer.append("thermal-shutdown\n");
     92             writer.close();
     93         } catch (IOException e) {
     94             e.printStackTrace();
     95         }
     96         int reason = mService.getLastShutdownReasonInternal(mTempReason);
     97         assertThat(reason).isEqualTo(PowerManager.SHUTDOWN_REASON_THERMAL_SHUTDOWN);
     98     }
     99 
    100     @SmallTest
    101     public void testGetDesiredScreenPolicy_WithVR() throws Exception {
    102         // Brighten up the screen
    103         mService.setWakefulnessLocked(WAKEFULNESS_AWAKE, 0);
    104         assertThat(mService.getDesiredScreenPolicyLocked()).isEqualTo(
    105                 DisplayPowerRequest.POLICY_BRIGHT);
    106 
    107         // Move to VR
    108         mService.setVrModeEnabled(true);
    109         assertThat(mService.getDesiredScreenPolicyLocked()).isEqualTo(
    110                 DisplayPowerRequest.POLICY_VR);
    111 
    112         // Then take a nap
    113         mService.setWakefulnessLocked(WAKEFULNESS_ASLEEP, 0);
    114         assertThat(mService.getDesiredScreenPolicyLocked()).isEqualTo(
    115                 DisplayPowerRequest.POLICY_OFF);
    116 
    117         // Wake up to VR
    118         mService.setWakefulnessLocked(WAKEFULNESS_AWAKE, 0);
    119         assertThat(mService.getDesiredScreenPolicyLocked()).isEqualTo(
    120                 DisplayPowerRequest.POLICY_VR);
    121 
    122         // And back to normal
    123         mService.setVrModeEnabled(false);
    124         assertThat(mService.getDesiredScreenPolicyLocked()).isEqualTo(
    125                 DisplayPowerRequest.POLICY_BRIGHT);
    126 
    127     }
    128 }
    129