| /* |
| * Copyright 2023 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.camera.view |
| |
| import android.content.Context |
| import android.os.Build |
| import android.view.Window |
| import androidx.camera.core.CameraSelector |
| import androidx.camera.core.ImageCapture |
| import androidx.camera.core.ImageCapture.ScreenFlashUiCompleter |
| import androidx.camera.core.ImageCapture.ScreenFlashUiControl |
| import androidx.test.core.app.ApplicationProvider |
| import com.google.common.truth.Truth.assertThat |
| import org.junit.Assert |
| import org.junit.Assume |
| import org.junit.Before |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.robolectric.RobolectricTestRunner |
| import org.robolectric.annotation.Config |
| import org.robolectric.annotation.internal.DoNotInstrument |
| import org.robolectric.shadows.ShadowWindow |
| |
| @RunWith(RobolectricTestRunner::class) |
| @DoNotInstrument |
| @Config(minSdk = Build.VERSION_CODES.LOLLIPOP) |
| class ScreenFlashViewTest { |
| private val noOpUiCompleter = ScreenFlashUiCompleter {} |
| |
| private val appContext = ApplicationProvider.getApplicationContext<Context>() |
| private lateinit var screenFlashView: ScreenFlashView |
| private lateinit var window: Window |
| |
| @Before |
| fun setUp() { |
| screenFlashView = ScreenFlashView(appContext) |
| createWindow() |
| } |
| |
| private fun createWindow() { |
| try { |
| window = ShadowWindow.create(appContext) |
| } catch (e: ClassNotFoundException) { |
| Assume.assumeTrue("Failed to create shadow window", false) |
| } |
| } |
| |
| private fun getScreenFlashUiControlAfterSettingWindow( |
| assumeNoFailure: Boolean |
| ): ScreenFlashUiControl? { |
| screenFlashView.setScreenFlashWindow(window) |
| val uiControl = screenFlashView.screenFlashUiControl |
| if (assumeNoFailure) { |
| Assume.assumeTrue("Failed to create ScreenFlashUiControl", uiControl != null) |
| } |
| return uiControl |
| } |
| |
| @Test |
| fun isTransparentByDefault() { |
| assertThat(screenFlashView.alpha).isEqualTo(0f) |
| } |
| |
| @Test |
| fun canProvideValidScreenFlashUiControl() { |
| val uiControl = getScreenFlashUiControlAfterSettingWindow(false) |
| assertThat(uiControl).isNotNull() |
| } |
| |
| @Test |
| fun providesSameScreenFlashUiControlIfSameWindowSetAgain() { |
| val prevUiControl = getScreenFlashUiControlAfterSettingWindow(false) |
| val newUiControl = getScreenFlashUiControlAfterSettingWindow(false) |
| assertThat(newUiControl).isEqualTo(prevUiControl) |
| } |
| |
| @Test |
| fun providesNewScreenFlashUiControlIfNewWindowSet() { |
| val prevUiControl = getScreenFlashUiControlAfterSettingWindow(false) |
| createWindow() |
| val newUiControl = getScreenFlashUiControlAfterSettingWindow(false) |
| assertThat(newUiControl).isNotEqualTo(prevUiControl) |
| } |
| |
| @Test |
| fun isFullyVisible_whenApplyScreenFlashUiInvoked() { |
| val uiControl = getScreenFlashUiControlAfterSettingWindow(true) |
| uiControl!!.applyScreenFlashUi(noOpUiCompleter) |
| assertThat(screenFlashView.alpha).isEqualTo(1f) |
| } |
| |
| @Test |
| fun windowBrightnessMaximized_whenApplyScreenFlashUiInvoked() { |
| val uiControl = getScreenFlashUiControlAfterSettingWindow(true) |
| uiControl!!.applyScreenFlashUi(noOpUiCompleter) |
| assertThat(window.attributes.screenBrightness).isEqualTo(1f) |
| } |
| |
| @Test |
| fun isTransparent_whenScreenFlashUiClearedAfterApply() { |
| val uiControl = getScreenFlashUiControlAfterSettingWindow(true) |
| uiControl!!.applyScreenFlashUi(noOpUiCompleter) |
| uiControl.clearScreenFlashUi() |
| assertThat(screenFlashView.alpha).isEqualTo(0f) |
| } |
| |
| @Test |
| fun windowBrightnessRestored_whenScreenFlashUiClearedAfterApply() { |
| val initialBrightness = 0.5f |
| val layoutParam = window.attributes |
| layoutParam.screenBrightness = initialBrightness |
| window.setAttributes(layoutParam) |
| val uiControl = getScreenFlashUiControlAfterSettingWindow(true) |
| uiControl!!.applyScreenFlashUi(noOpUiCompleter) |
| uiControl.clearScreenFlashUi() |
| assertThat(window.attributes.screenBrightness).isEqualTo(initialBrightness) |
| } |
| |
| @Test |
| fun validScreenFlashUiControlSetToCameraController_whenWindowSetAndThenControllerSet() { |
| val cameraController = LifecycleCameraController(appContext) |
| |
| screenFlashView.setScreenFlashWindow(window) |
| screenFlashView.setController(cameraController) |
| |
| assertThat(cameraController.screenFlashUiInfoByPriority?.screenFlashUiControl).isNotNull() |
| } |
| |
| @Test |
| fun validScreenFlashUiControlSetToCameraController_whenControllerSetAndThenWindowSet() { |
| val cameraController = LifecycleCameraController(appContext) |
| |
| screenFlashView.setController(cameraController) |
| screenFlashView.setScreenFlashWindow(window) |
| |
| assertThat(cameraController.screenFlashUiInfoByPriority?.screenFlashUiControl).isNotNull() |
| } |
| |
| @Test |
| fun nullScreenFlashUiControlSetToCameraController_whenControllerSetButNoWindowSet() { |
| val cameraController = LifecycleCameraController(appContext) |
| |
| screenFlashView.setController(cameraController) |
| |
| assertThat(cameraController.screenFlashUiInfoByPriority?.screenFlashUiControl).isNull() |
| } |
| |
| @Test |
| fun throwException_whenControllerSetWithScreenFlashModeButNoWindowSet() { |
| val cameraController = LifecycleCameraController(appContext) |
| cameraController.cameraSelector = CameraSelector.DEFAULT_FRONT_CAMERA |
| cameraController.imageCaptureFlashMode = ImageCapture.FLASH_MODE_SCREEN |
| |
| Assert.assertThrows(IllegalStateException::class.java) { |
| screenFlashView.setController(cameraController) |
| } |
| } |
| } |
