Add icon picker for zen modes

Bug: 333901673
Test: atest ZenModeIconPickerListPreferenceControllerTest
Flag: android.app.modes_ui
Change-Id: Ib6faaac7c93b25423d18dbdcd0a2310de15fa86f

tests/robotests/src/com/android/settings/notification/modes/ZenModeIconPickerListPreferenceControllerTest.java

@@ -0,0 +1,91 @@
+/*
+ * 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.settings.notification.modes;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.AutomaticZenRule;
+import android.content.Context;
+import android.net.Uri;
+
+import androidx.preference.PreferenceScreen;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settingslib.widget.LayoutPreference;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class ZenModeIconPickerListPreferenceControllerTest {
+
+    private static final ZenMode ZEN_MODE = new ZenMode(
+            "mode_id",
+            new AutomaticZenRule.Builder("mode name", Uri.parse("mode")).build(),
+            /* isActive= */ false);
+
+    private ZenModesBackend mBackend;
+    private ZenModeIconPickerListPreferenceController mController;
+    private PreferenceScreen mPreferenceScreen;
+    private RecyclerView mRecyclerView;
+
+    @Before
+    public void setUp() {
+        Context context = RuntimeEnvironment.getApplication();
+        mBackend = mock(ZenModesBackend.class);
+
+        DashboardFragment fragment = mock(DashboardFragment.class);
+        mController = new ZenModeIconPickerListPreferenceController(
+                RuntimeEnvironment.getApplication(), "icon_list", fragment, mBackend);
+
+        mRecyclerView = new RecyclerView(context);
+        mRecyclerView.setId(R.id.icon_list);
+        LayoutPreference layoutPreference = new LayoutPreference(context, mRecyclerView);
+        mPreferenceScreen = mock(PreferenceScreen.class);
+        when(mPreferenceScreen.findPreference(eq("icon_list"))).thenReturn(layoutPreference);
+    }
+
+    @Test
+    public void displayPreference_loadsIcons() {
+        mController.displayPreference(mPreferenceScreen);
+
+        assertThat(mRecyclerView.getAdapter()).isNotNull();
+        assertThat(mRecyclerView.getAdapter().getItemCount()).isEqualTo(20);
+    }
+
+    @Test
+    public void selectIcon_updatesMode() {
+        mController.setZenMode(ZEN_MODE);
+
+        mController.onIconSelected(R.drawable.ic_android);
+
+        ArgumentCaptor<ZenMode> captor = ArgumentCaptor.forClass(ZenMode.class);
+        verify(mBackend).updateMode(captor.capture());
+        assertThat(captor.getValue().getRule().getIconResId()).isEqualTo(R.drawable.ic_android);
+    }
+}