Santos Cordon | 64a8627 | 2019-11-28 11:24:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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.display; |
| 18 | |
| 19 | import static org.junit.Assert.assertEquals; |
| 20 | import static org.mockito.ArgumentMatchers.eq; |
| 21 | import static org.mockito.Mockito.any; |
| 22 | import static org.mockito.Mockito.anyFloat; |
| 23 | import static org.mockito.Mockito.anyInt; |
| 24 | import static org.mockito.Mockito.verify; |
| 25 | import static org.mockito.Mockito.when; |
| 26 | |
| 27 | import android.content.Context; |
| 28 | import android.content.pm.PackageManager; |
| 29 | import android.hardware.Sensor; |
| 30 | import android.hardware.SensorEventListener; |
| 31 | import android.hardware.SensorManager; |
| 32 | import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; |
| 33 | import android.os.Handler; |
| 34 | |
| 35 | import androidx.test.InstrumentationRegistry; |
| 36 | import androidx.test.filters.SmallTest; |
| 37 | import androidx.test.runner.AndroidJUnit4; |
| 38 | |
| 39 | import org.junit.Before; |
| 40 | import org.junit.Test; |
| 41 | import org.junit.runner.RunWith; |
| 42 | import org.mockito.ArgumentCaptor; |
| 43 | import org.mockito.Mock; |
| 44 | import org.mockito.MockitoAnnotations; |
| 45 | |
| 46 | @SmallTest |
| 47 | @RunWith(AndroidJUnit4.class) |
| 48 | public class AutomaticBrightnessControllerTest { |
| 49 | |
| 50 | private static final int BRIGHTNESS_MIN = 1; |
| 51 | private static final int BRIGHTNESS_MAX = 255; |
| 52 | private static final int LIGHT_SENSOR_RATE = 20; |
| 53 | private static final int INITIAL_LIGHT_SENSOR_RATE = 20; |
| 54 | private static final int BRIGHTENING_LIGHT_DEBOUNCE_CONFIG = 0; |
| 55 | private static final int DARKENING_LIGHT_DEBOUNCE_CONFIG = 0; |
| 56 | private static final int SHORT_TERM_MODEL_TIMEOUT = 0; |
| 57 | private static final float DOZE_SCALE_FACTOR = 0.0f; |
| 58 | private static final boolean RESET_AMBIENT_LUX_AFTER_WARMUP_CONFIG = false; |
| 59 | |
| 60 | private Context mContext; |
| 61 | @Mock SensorManager mSensorManager; |
| 62 | @Mock BrightnessMappingStrategy mBrightnessMappingStrategy; |
| 63 | @Mock HysteresisLevels mAmbientBrightnessThresholds; |
| 64 | @Mock HysteresisLevels mScreenBrightnessThresholds; |
| 65 | @Mock PackageManager mPackageManager; |
| 66 | @Mock Handler mNoopHandler; |
| 67 | |
| 68 | private static final int LIGHT_SENSOR_WARMUP_TIME = 0; |
| 69 | @Before |
| 70 | public void setUp() { |
| 71 | MockitoAnnotations.initMocks(this); |
| 72 | |
| 73 | mContext = InstrumentationRegistry.getContext(); |
| 74 | } |
| 75 | |
| 76 | private AutomaticBrightnessController setupController(Sensor lightSensor) { |
| 77 | AutomaticBrightnessController controller = new AutomaticBrightnessController( |
| 78 | new AutomaticBrightnessController.Injector() { |
| 79 | @Override |
| 80 | public Handler getBackgroundThreadHandler() { |
| 81 | return mNoopHandler; |
| 82 | } |
| 83 | }, |
| 84 | () -> { }, mContext.getMainLooper(), mSensorManager, lightSensor, |
| 85 | mBrightnessMappingStrategy, LIGHT_SENSOR_WARMUP_TIME, BRIGHTNESS_MIN, |
| 86 | BRIGHTNESS_MAX, DOZE_SCALE_FACTOR, LIGHT_SENSOR_RATE, INITIAL_LIGHT_SENSOR_RATE, |
| 87 | BRIGHTENING_LIGHT_DEBOUNCE_CONFIG, DARKENING_LIGHT_DEBOUNCE_CONFIG, |
| 88 | RESET_AMBIENT_LUX_AFTER_WARMUP_CONFIG, mAmbientBrightnessThresholds, |
| 89 | mScreenBrightnessThresholds, SHORT_TERM_MODEL_TIMEOUT, mPackageManager); |
| 90 | controller.setLoggingEnabled(true); |
| 91 | |
| 92 | // Configure the brightness controller and grab an instance of the sensor listener, |
| 93 | // through which we can deliver fake (for test) sensor values. |
| 94 | controller.configure(true /* enable */, null /* configuration */, |
| 95 | 0 /* brightness */, false /* userChangedBrightness */, 0 /* adjustment */, |
| 96 | false /* userChanged */, DisplayPowerRequest.POLICY_BRIGHT); |
| 97 | |
| 98 | return controller; |
| 99 | } |
| 100 | |
| 101 | @Test |
| 102 | public void testNoHysteresisAtMinBrightness() throws Exception { |
| 103 | Sensor lightSensor = TestUtils.createSensor(Sensor.TYPE_LIGHT, "Light Sensor"); |
| 104 | AutomaticBrightnessController controller = setupController(lightSensor); |
| 105 | |
| 106 | ArgumentCaptor<SensorEventListener> listenerCaptor = |
| 107 | ArgumentCaptor.forClass(SensorEventListener.class); |
| 108 | verify(mSensorManager).registerListener(listenerCaptor.capture(), eq(lightSensor), |
| 109 | eq(INITIAL_LIGHT_SENSOR_RATE * 1000), any(Handler.class)); |
| 110 | SensorEventListener listener = listenerCaptor.getValue(); |
| 111 | |
| 112 | // Set up system to return 5 as a brightness value |
| 113 | float lux1 = 100.0f; |
| 114 | float normalizedBrightness1 = 0.02f; |
| 115 | when(mAmbientBrightnessThresholds.getBrighteningThreshold(lux1)) |
| 116 | .thenReturn(lux1); |
| 117 | when(mAmbientBrightnessThresholds.getDarkeningThreshold(lux1)) |
| 118 | .thenReturn(lux1); |
| 119 | when(mBrightnessMappingStrategy.getBrightness(eq(lux1), eq(null), anyInt())) |
| 120 | .thenReturn(normalizedBrightness1); |
| 121 | |
| 122 | // This is the important bit: When the new brightness is set, make sure the new |
| 123 | // brightening threshold is beyond the maximum brightness value...so that we can test that |
| 124 | // our threshold clamping works. |
| 125 | when(mScreenBrightnessThresholds.getBrighteningThreshold(5)).thenReturn(1.0f); |
| 126 | |
| 127 | // Send new sensor value and verify |
| 128 | listener.onSensorChanged(TestUtils.createSensorEvent(lightSensor, (int) lux1)); |
| 129 | assertEquals(5, controller.getAutomaticScreenBrightness()); |
| 130 | |
| 131 | |
| 132 | // Set up system to return 255 as a brightness value |
| 133 | float lux2 = 10.0f; |
| 134 | float normalizedBrightness2 = 0.0f; |
| 135 | when(mAmbientBrightnessThresholds.getBrighteningThreshold(lux2)) |
| 136 | .thenReturn(lux2); |
| 137 | when(mAmbientBrightnessThresholds.getDarkeningThreshold(lux2)) |
| 138 | .thenReturn(lux2); |
| 139 | when(mBrightnessMappingStrategy.getBrightness(anyFloat(), eq(null), anyInt())) |
| 140 | .thenReturn(normalizedBrightness2); |
| 141 | |
| 142 | // Send new sensor value and verify |
| 143 | listener.onSensorChanged(TestUtils.createSensorEvent(lightSensor, (int) lux2)); |
| 144 | assertEquals(1, controller.getAutomaticScreenBrightness()); |
| 145 | } |
| 146 | |
| 147 | @Test |
| 148 | public void testNoHysteresisAtMaxBrightness() throws Exception { |
| 149 | Sensor lightSensor = TestUtils.createSensor(Sensor.TYPE_LIGHT, "Light Sensor"); |
| 150 | AutomaticBrightnessController controller = setupController(lightSensor); |
| 151 | |
| 152 | ArgumentCaptor<SensorEventListener> listenerCaptor = |
| 153 | ArgumentCaptor.forClass(SensorEventListener.class); |
| 154 | verify(mSensorManager).registerListener(listenerCaptor.capture(), eq(lightSensor), |
| 155 | eq(INITIAL_LIGHT_SENSOR_RATE * 1000), any(Handler.class)); |
| 156 | SensorEventListener listener = listenerCaptor.getValue(); |
| 157 | |
| 158 | // Set up system to return 250 as a brightness value |
| 159 | float lux1 = 100.0f; |
| 160 | float normalizedBrightness1 = 0.98f; |
| 161 | when(mAmbientBrightnessThresholds.getBrighteningThreshold(lux1)) |
| 162 | .thenReturn(lux1); |
| 163 | when(mAmbientBrightnessThresholds.getDarkeningThreshold(lux1)) |
| 164 | .thenReturn(lux1); |
| 165 | when(mBrightnessMappingStrategy.getBrightness(eq(lux1), eq(null), anyInt())) |
| 166 | .thenReturn(normalizedBrightness1); |
| 167 | |
| 168 | // This is the important bit: When the new brightness is set, make sure the new |
| 169 | // brightening threshold is beyond the maximum brightness value...so that we can test that |
| 170 | // our threshold clamping works. |
| 171 | when(mScreenBrightnessThresholds.getBrighteningThreshold(250)).thenReturn(260.0f); |
| 172 | |
| 173 | // Send new sensor value and verify |
| 174 | listener.onSensorChanged(TestUtils.createSensorEvent(lightSensor, (int) lux1)); |
| 175 | assertEquals(250, controller.getAutomaticScreenBrightness()); |
| 176 | |
| 177 | |
| 178 | // Set up system to return 255 as a brightness value |
| 179 | float lux2 = 110.0f; |
| 180 | float normalizedBrightness2 = 1.0f; |
| 181 | when(mAmbientBrightnessThresholds.getBrighteningThreshold(lux2)) |
| 182 | .thenReturn(lux2); |
| 183 | when(mAmbientBrightnessThresholds.getDarkeningThreshold(lux2)) |
| 184 | .thenReturn(lux2); |
| 185 | when(mBrightnessMappingStrategy.getBrightness(anyFloat(), eq(null), anyInt())) |
| 186 | .thenReturn(normalizedBrightness2); |
| 187 | |
| 188 | // Send new sensor value and verify |
| 189 | listener.onSensorChanged(TestUtils.createSensorEvent(lightSensor, (int) lux2)); |
| 190 | assertEquals(255, controller.getAutomaticScreenBrightness()); |
| 191 | } |
| 192 | } |