Add ANC data and domain.

The same as ag/26232404, but with the fixed comments

Flag: aconfig new_volume_panel DISABLED
Test: atest AncSliceRepositoryTest
Test: atest AncSliceInteractorTest
Test: atest AncAvailabilityCriteriaTest
Bug: 324392591
Change-Id: Idc22bc5005d6ec9d2713d32f892ab1dffbd6061b

packages/SystemUI/multivalentTests/src/com/android/systemui/volume/panel/component/anc/data/repository/AncSliceRepositoryTest.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc.data.repository
+
+import android.bluetooth.BluetoothDevice
+import android.net.Uri
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.settingslib.bluetooth.CachedBluetoothDevice
+import com.android.settingslib.media.BluetoothMediaDevice
+import com.android.settingslib.media.MediaDevice
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.coroutines.collectLastValue
+import com.android.systemui.kosmos.testScope
+import com.android.systemui.testKosmos
+import com.android.systemui.util.mockito.any
+import com.android.systemui.util.mockito.mock
+import com.android.systemui.util.mockito.whenever
+import com.android.systemui.volume.localMediaRepository
+import com.android.systemui.volume.localMediaRepositoryFactory
+import com.android.systemui.volume.panel.component.anc.FakeSliceFactory
+import com.android.systemui.volume.panel.component.anc.sliceViewManager
+import com.google.common.truth.Truth.assertThat
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.runCurrent
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@OptIn(ExperimentalCoroutinesApi::class)
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class AncSliceRepositoryTest : SysuiTestCase() {
+
+    private val kosmos = testKosmos()
+
+    private lateinit var underTest: AncSliceRepository
+
+    @Before
+    fun setup() {
+        with(kosmos) {
+            val slice = FakeSliceFactory.createSlice(hasError = false, hasSliceItem = true)
+            whenever(sliceViewManager.bindSlice(any<Uri>())).thenReturn(slice)
+
+            underTest =
+                AncSliceRepositoryImpl(
+                    localMediaRepositoryFactory,
+                    testScope.testScheduler,
+                    sliceViewManager,
+                )
+        }
+    }
+
+    @Test
+    fun noConnectedDevice_noSlice() {
+        with(kosmos) {
+            testScope.runTest {
+                localMediaRepository.updateCurrentConnectedDevice(null)
+
+                val slice by collectLastValue(underTest.ancSlice(1))
+                runCurrent()
+
+                assertThat(slice).isNull()
+            }
+        }
+    }
+
+    @Test
+    fun connectedDevice_sliceReturned() {
+        with(kosmos) {
+            testScope.runTest {
+                localMediaRepository.updateCurrentConnectedDevice(createMediaDevice())
+
+                val slice by collectLastValue(underTest.ancSlice(1))
+                runCurrent()
+
+                assertThat(slice).isNotNull()
+            }
+        }
+    }
+
+    private fun createMediaDevice(sliceUri: String = "content://test.slice"): MediaDevice {
+        val bluetoothDevice: BluetoothDevice = mock {
+            whenever(getMetadata(any()))
+                .thenReturn(
+                    ("<HEARABLE_CONTROL_SLICE_WITH_WIDTH>" +
+                            sliceUri +
+                            "</HEARABLE_CONTROL_SLICE_WITH_WIDTH>")
+                        .toByteArray()
+                )
+        }
+        val cachedBluetoothDevice: CachedBluetoothDevice = mock {
+            whenever(device).thenReturn(bluetoothDevice)
+        }
+        return mock<BluetoothMediaDevice> {
+            whenever(cachedDevice).thenReturn(cachedBluetoothDevice)
+        }
+    }
+}

packages/SystemUI/multivalentTests/src/com/android/systemui/volume/panel/component/anc/domain/AncAvailabilityCriteriaTest.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc.domain
+
+import android.net.Uri
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.coroutines.collectLastValue
+import com.android.systemui.kosmos.testScope
+import com.android.systemui.testKosmos
+import com.android.systemui.util.mockito.any
+import com.android.systemui.util.mockito.mock
+import com.android.systemui.util.mockito.whenever
+import com.android.systemui.volume.panel.component.anc.FakeSliceFactory
+import com.android.systemui.volume.panel.component.anc.ancSliceInteractor
+import com.android.systemui.volume.panel.component.anc.ancSliceRepository
+import com.android.systemui.volume.panel.component.anc.sliceViewManager
+import com.google.common.truth.Truth.assertThat
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.runCurrent
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@OptIn(ExperimentalCoroutinesApi::class)
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class AncAvailabilityCriteriaTest : SysuiTestCase() {
+
+    private val kosmos = testKosmos()
+
+    private lateinit var underTest: AncAvailabilityCriteria
+
+    @Before
+    fun setup() {
+        with(kosmos) {
+            whenever(sliceViewManager.bindSlice(any<Uri>())).thenReturn(mock {})
+
+            underTest = AncAvailabilityCriteria(ancSliceInteractor)
+        }
+    }
+
+    @Test
+    fun noSlice_unavailable() {
+        with(kosmos) {
+            testScope.runTest {
+                ancSliceRepository.putSlice(1, null)
+
+                val isAvailable by collectLastValue(underTest.isAvailable())
+                runCurrent()
+
+                assertThat(isAvailable).isFalse()
+            }
+        }
+    }
+
+    @Test
+    fun hasSlice_available() {
+        with(kosmos) {
+            testScope.runTest {
+                ancSliceRepository.putSlice(
+                    1,
+                    FakeSliceFactory.createSlice(hasError = false, hasSliceItem = true)
+                )
+
+                val isAvailable by collectLastValue(underTest.isAvailable())
+                runCurrent()
+
+                assertThat(isAvailable).isTrue()
+            }
+        }
+    }
+}

packages/SystemUI/multivalentTests/src/com/android/systemui/volume/panel/component/anc/domain/interactor/AncSliceInteractorTest.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc.domain.interactor
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.coroutines.collectLastValue
+import com.android.systemui.kosmos.testScope
+import com.android.systemui.testKosmos
+import com.android.systemui.volume.panel.component.anc.FakeSliceFactory
+import com.android.systemui.volume.panel.component.anc.ancSliceRepository
+import com.google.common.truth.Truth.assertThat
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.runCurrent
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@OptIn(ExperimentalCoroutinesApi::class)
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class AncSliceInteractorTest : SysuiTestCase() {
+
+    private val kosmos = testKosmos()
+
+    private lateinit var underTest: AncSliceInteractor
+
+    @Before
+    fun setup() {
+        with(kosmos) {
+            underTest = AncSliceInteractor(ancSliceRepository, testScope.backgroundScope)
+        }
+    }
+
+    @Test
+    fun errorSlice_returnsNull() {
+        with(kosmos) {
+            testScope.runTest {
+                ancSliceRepository.putSlice(
+                    1,
+                    FakeSliceFactory.createSlice(hasError = true, hasSliceItem = true)
+                )
+
+                val slice by collectLastValue(underTest.ancSlice)
+                runCurrent()
+
+                assertThat(slice).isNull()
+            }
+        }
+    }
+
+    @Test
+    fun noSliceItem_returnsNull() {
+        with(kosmos) {
+            testScope.runTest {
+                ancSliceRepository.putSlice(
+                    1,
+                    FakeSliceFactory.createSlice(hasError = false, hasSliceItem = false)
+                )
+
+                val slice by collectLastValue(underTest.ancSlice)
+                runCurrent()
+
+                assertThat(slice).isNull()
+            }
+        }
+    }
+
+    @Test
+    fun sliceItem_noError_returnsSlice() {
+        with(kosmos) {
+            testScope.runTest {
+                ancSliceRepository.putSlice(
+                    1,
+                    FakeSliceFactory.createSlice(hasError = false, hasSliceItem = true)
+                )
+
+                val slice by collectLastValue(underTest.ancSlice)
+                runCurrent()
+
+                assertThat(slice).isNotNull()
+            }
+        }
+    }
+}

packages/SystemUI/src/com/android/systemui/slice/SliceViewManagerExt.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.slice
+
+import android.net.Uri
+import androidx.slice.Slice
+import androidx.slice.SliceViewManager
+import com.android.systemui.common.coroutine.ConflatedCallbackFlow
+import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.launch
+
+/**
+ * Returns updating [Slice] for a [sliceUri]. It's null when there is no slice available for the
+ * provided Uri. This can change overtime because of external changes (like device being
+ * connected/disconnected).
+ */
+fun SliceViewManager.sliceForUri(sliceUri: Uri): Flow<Slice?> =
+    ConflatedCallbackFlow.conflatedCallbackFlow {
+        val callback = SliceViewManager.SliceCallback { launch { send(it) } }
+
+        val slice = bindSlice(sliceUri)
+        send(slice)
+        registerSliceCallback(sliceUri, callback)
+        awaitClose { unregisterSliceCallback(sliceUri, callback) }
+    }

packages/SystemUI/src/com/android/systemui/volume/dagger/AncModule.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.dagger
+
+import android.content.Context
+import androidx.slice.SliceViewManager
+import com.android.systemui.dagger.SysUISingleton
+import com.android.systemui.dagger.qualifiers.Application
+import com.android.systemui.volume.panel.component.anc.data.repository.AncSliceRepository
+import com.android.systemui.volume.panel.component.anc.data.repository.AncSliceRepositoryImpl
+import dagger.Module
+import dagger.Provides
+
+/** Dagger module that provides ANC controlling backend. */
+@Module
+interface AncModule {
+
+    companion object {
+        @Provides
+        @SysUISingleton
+        fun provideAncSliceRepository(
+            @Application context: Context,
+            implFactory: AncSliceRepositoryImpl.Factory
+        ): AncSliceRepository = implFactory.create(SliceViewManager.getInstance(context))
+    }
+}

packages/SystemUI/src/com/android/systemui/volume/dagger/VolumeModule.java

@@ -57,6 +57,7 @@ import dagger.multibindings.IntoSet;
 @Module(
         includes = {
                 AudioModule.class,
+                AncModule.class,
                 CaptioningModule.class,
                 MediaDevicesModule.class
         },

packages/SystemUI/src/com/android/systemui/volume/panel/component/anc/data/repository/AncSliceRepository.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc.data.repository
+
+import android.bluetooth.BluetoothDevice
+import android.net.Uri
+import androidx.slice.Slice
+import androidx.slice.SliceViewManager
+import com.android.settingslib.bluetooth.BluetoothUtils
+import com.android.settingslib.media.BluetoothMediaDevice
+import com.android.systemui.dagger.qualifiers.Background
+import com.android.systemui.slice.sliceForUri
+import com.android.systemui.volume.panel.component.mediaoutput.data.repository.LocalMediaRepositoryFactory
+import dagger.assisted.Assisted
+import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
+import kotlin.coroutines.CoroutineContext
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.map
+
+/** Provides ANC slice data */
+interface AncSliceRepository {
+
+    /**
+     * ANC slice with a given width. Emits null when there is no ANC slice available. This can mean
+     * that:
+     * - there is no supported device connected;
+     * - there is no slice provider for the uri;
+     */
+    fun ancSlice(width: Int): Flow<Slice?>
+}
+
+@OptIn(ExperimentalCoroutinesApi::class)
+class AncSliceRepositoryImpl
+@AssistedInject
+constructor(
+    mediaRepositoryFactory: LocalMediaRepositoryFactory,
+    @Background private val backgroundCoroutineContext: CoroutineContext,
+    @Assisted private val sliceViewManager: SliceViewManager,
+) : AncSliceRepository {
+
+    private val localMediaRepository = mediaRepositoryFactory.create(null)
+
+    override fun ancSlice(width: Int): Flow<Slice?> {
+        return localMediaRepository.currentConnectedDevice
+            .map { (it as? BluetoothMediaDevice)?.cachedDevice?.device?.getExtraControlUri(width) }
+            .distinctUntilChanged()
+            .flatMapLatest { sliceUri ->
+                sliceUri ?: return@flatMapLatest flowOf(null)
+                sliceViewManager.sliceForUri(sliceUri)
+            }
+            .flowOn(backgroundCoroutineContext)
+    }
+
+    private fun BluetoothDevice.getExtraControlUri(width: Int): Uri? {
+        val uri: String? = BluetoothUtils.getControlUriMetaData(this)
+        uri ?: return null
+
+        return if (uri.isEmpty()) {
+            null
+        } else {
+            Uri.parse(
+                "$uri$width" +
+                    "&version=${SliceParameters.VERSION}" +
+                    "&is_collapsed=${SliceParameters.IS_COLLAPSED}"
+            )
+        }
+    }
+
+    @AssistedFactory
+    interface Factory {
+        fun create(sliceViewManager: SliceViewManager): AncSliceRepositoryImpl
+    }
+
+    private object SliceParameters {
+        /**
+         * Slice version
+         * 1) legacy slice
+         * 2) new slice
+         */
+        const val VERSION = 2
+
+        /**
+         * Collapsed slice shows a single button, and expanded shows a row buttons. Supported since
+         * [VERSION]==2.
+         */
+        const val IS_COLLAPSED = false
+    }
+}

packages/SystemUI/src/com/android/systemui/volume/panel/component/anc/domain/AncAvailabilityCriteria.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc.domain
+
+import com.android.systemui.volume.panel.component.anc.domain.interactor.AncSliceInteractor
+import com.android.systemui.volume.panel.dagger.scope.VolumePanelScope
+import com.android.systemui.volume.panel.domain.ComponentAvailabilityCriteria
+import javax.inject.Inject
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+
+/** Determines if ANC component is available for the Volume Panel. */
+@VolumePanelScope
+class AncAvailabilityCriteria
+@Inject
+constructor(
+    private val ancSliceInteractor: AncSliceInteractor,
+) : ComponentAvailabilityCriteria {
+
+    override fun isAvailable(): Flow<Boolean> = ancSliceInteractor.ancSlice.map { it != null }
+}

packages/SystemUI/src/com/android/systemui/volume/panel/component/anc/domain/interactor/AncSliceInteractor.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc.domain.interactor
+
+import android.app.slice.Slice.HINT_ERROR
+import android.app.slice.SliceItem.FORMAT_SLICE
+import androidx.slice.Slice
+import com.android.systemui.volume.panel.component.anc.data.repository.AncSliceRepository
+import com.android.systemui.volume.panel.dagger.scope.VolumePanelScope
+import javax.inject.Inject
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.shareIn
+
+/** Provides a valid slice from [AncSliceRepository]. */
+@OptIn(ExperimentalCoroutinesApi::class)
+@VolumePanelScope
+class AncSliceInteractor
+@Inject
+constructor(
+    private val ancSliceRepository: AncSliceRepository,
+    scope: CoroutineScope,
+) {
+
+    // Start with a positive width to check is the Slice is available.
+    private val width = MutableStateFlow(1)
+
+    /** Provides a valid ANC slice. */
+    val ancSlice: SharedFlow<Slice?> =
+        width
+            .flatMapLatest { width -> ancSliceRepository.ancSlice(width) }
+            .map { slice ->
+                if (slice?.isValidSlice() == true) {
+                    slice
+                } else {
+                    null
+                }
+            }
+            .shareIn(scope, SharingStarted.Eagerly, replay = 1)
+
+    /** Updates the width of the [ancSlice] */
+    fun changeWidth(newWidth: Int) {
+        width.value = newWidth
+    }
+
+    private fun Slice.isValidSlice(): Boolean {
+        if (hints.contains(HINT_ERROR)) {
+            return false
+        }
+        for (item in items) {
+            if (item.format == FORMAT_SLICE) {
+                return true
+            }
+        }
+        return false
+    }
+}

packages/SystemUI/tests/utils/src/com/android/systemui/volume/panel/component/anc/FakeSliceFactory.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc
+
+import androidx.slice.Slice
+import androidx.slice.SliceItem
+import com.android.systemui.util.mockito.mock
+import com.android.systemui.util.mockito.whenever
+
+object FakeSliceFactory {
+
+    fun createSlice(hasError: Boolean, hasSliceItem: Boolean): Slice {
+        return mock {
+            val sliceItem: SliceItem = mock {
+                whenever(format).thenReturn(android.app.slice.SliceItem.FORMAT_SLICE)
+            }
+
+            whenever(items)
+                .thenReturn(
+                    buildList {
+                        if (hasSliceItem) {
+                            add(sliceItem)
+                        }
+                    }
+                )
+
+            whenever(hints)
+                .thenReturn(
+                    buildList {
+                        if (hasError) {
+                            add(android.app.slice.Slice.HINT_ERROR)
+                        }
+                    }
+                )
+        }
+    }
+}

packages/SystemUI/tests/utils/src/com/android/systemui/volume/panel/component/anc/VolumePanelAncKosmos.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc
+
+import androidx.slice.SliceViewManager
+import com.android.systemui.kosmos.Kosmos
+import com.android.systemui.kosmos.testScope
+import com.android.systemui.util.mockito.mock
+import com.android.systemui.volume.panel.component.anc.data.repository.FakeAncSliceRepository
+import com.android.systemui.volume.panel.component.anc.domain.interactor.AncSliceInteractor
+
+var Kosmos.sliceViewManager: SliceViewManager by Kosmos.Fixture { mock {} }
+val Kosmos.ancSliceRepository by Kosmos.Fixture { FakeAncSliceRepository() }
+val Kosmos.ancSliceInteractor by
+    Kosmos.Fixture { AncSliceInteractor(ancSliceRepository, testScope.backgroundScope) }

packages/SystemUI/tests/utils/src/com/android/systemui/volume/panel/component/anc/data/repository/FakeAncSliceRepository.kt

+/*
+ * Copyright (C) 2024 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.android.systemui.volume.panel.component.anc.data.repository
+
+import androidx.slice.Slice
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+
+class FakeAncSliceRepository : AncSliceRepository {
+
+    private val sliceByWidth = mutableMapOf<Int, MutableStateFlow<Slice?>>()
+
+    override fun ancSlice(width: Int): Flow<Slice?> =
+        sliceByWidth.getOrPut(width) { MutableStateFlow(null) }
+
+    fun putSlice(width: Int, slice: Slice?) {
+        sliceByWidth.getOrPut(width) { MutableStateFlow(null) }.value = slice
+    }
+}