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/*
* Copyright (C) 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 com.google.jetpackcamera.feature.preview
import android.content.ContentResolver
import androidx.camera.core.Preview.SurfaceProvider
import com.google.jetpackcamera.domain.camera.test.FakeCameraUseCase
import com.google.jetpackcamera.settings.model.FlashMode
import com.google.jetpackcamera.settings.test.FakeSettingsRepository
import junit.framework.TestCase.assertEquals
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.test.StandardTestDispatcher
import kotlinx.coroutines.test.advanceUntilIdle
import kotlinx.coroutines.test.runTest
import kotlinx.coroutines.test.setMain
import org.junit.Before
import org.junit.Test
import org.mockito.Mockito.mock
@OptIn(ExperimentalCoroutinesApi::class)
class PreviewViewModelTest {
private val cameraUseCase = FakeCameraUseCase()
private lateinit var previewViewModel: PreviewViewModel
@Before
fun setup() = runTest(StandardTestDispatcher()) {
Dispatchers.setMain(StandardTestDispatcher())
previewViewModel = PreviewViewModel(cameraUseCase, FakeSettingsRepository)
advanceUntilIdle()
}
@Test
fun getPreviewUiState() = runTest(StandardTestDispatcher()) {
advanceUntilIdle()
val uiState = previewViewModel.previewUiState.value
assertEquals(CameraState.READY, uiState.cameraState)
}
@Test
fun runCamera() = runTest(StandardTestDispatcher()) {
val surfaceProvider: SurfaceProvider = mock(SurfaceProvider::class.java)
previewViewModel.runCamera(surfaceProvider)
advanceUntilIdle()
assertEquals(cameraUseCase.previewStarted, true)
}
@Test
fun captureImage() = runTest(StandardTestDispatcher()) {
val surfaceProvider: SurfaceProvider = mock(SurfaceProvider::class.java)
previewViewModel.runCamera(surfaceProvider)
previewViewModel.captureImage()
advanceUntilIdle()
assertEquals(cameraUseCase.numPicturesTaken, 1)
}
@Test
fun captureImageWithUri() = runTest(StandardTestDispatcher()) {
val surfaceProvider: SurfaceProvider = mock(SurfaceProvider::class.java)
val contentResolver: ContentResolver = mock(ContentResolver::class.java)
previewViewModel.runCamera(surfaceProvider)
previewViewModel.captureImage(contentResolver, null) {}
advanceUntilIdle()
assertEquals(cameraUseCase.numPicturesTaken, 1)
}
@Test
fun startVideoRecording() = runTest(StandardTestDispatcher()) {
previewViewModel.runCamera(mock(SurfaceProvider::class.java))
previewViewModel.startVideoRecording()
advanceUntilIdle()
assertEquals(cameraUseCase.recordingInProgress, true)
}
@Test
fun stopVideoRecording() = runTest(StandardTestDispatcher()) {
previewViewModel.runCamera(mock(SurfaceProvider::class.java))
previewViewModel.startVideoRecording()
advanceUntilIdle()
previewViewModel.stopVideoRecording()
assertEquals(cameraUseCase.recordingInProgress, false)
}
@Test
fun setFlash() = runTest(StandardTestDispatcher()) {
previewViewModel.runCamera(mock(SurfaceProvider::class.java))
previewViewModel.setFlash(FlashMode.AUTO)
advanceUntilIdle()
assertEquals(
previewViewModel.previewUiState.value.currentCameraSettings.flashMode,
FlashMode.AUTO
)
}
@Test
fun flipCamera() = runTest(StandardTestDispatcher()) {
// initial default value should be back
previewViewModel.runCamera(mock(SurfaceProvider::class.java))
assertEquals(
previewViewModel.previewUiState.value.currentCameraSettings.isFrontCameraFacing,
false
)
previewViewModel.flipCamera()
advanceUntilIdle()
// ui state and camera should both be true now
assertEquals(
previewViewModel.previewUiState.value.currentCameraSettings.isFrontCameraFacing,
true
)
assertEquals(true, cameraUseCase.isLensFacingFront)
}
}
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