Add BluetoothLeAudioModePreferenceControllerTest

Bug: 273153850
Test: make RunSettingsRoboTests ROBOTEST_FILTER=BluetoothLeAudioModePreferenceControllerTest
Change-Id: I967764848c953a9156981e121e924d5a18617d2f

src/com/android/settings/development/BluetoothLeAudioModePreferenceController.java

@@ -26,6 +26,7 @@ import android.text.TextUtils;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 
@@ -50,8 +51,9 @@ public class BluetoothLeAudioModePreferenceController
 
     private final String[] mListValues;
     private final String[] mListSummaries;
-    @Nullable private String mNewMode;
-
+    @VisibleForTesting
+    @Nullable String mNewMode;
+    @VisibleForTesting
     BluetoothAdapter mBluetoothAdapter;
 
     boolean mChanged = false;

tests/robotests/src/com/android/settings/development/BluetoothLeAudioModePreferenceControllerTest.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2022 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.development;
+
+import static com.android.settings.development.BluetoothLeAudioModePreferenceController
+        .LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.bluetooth.BluetoothAdapter;
+import android.content.Context;
+import android.os.SystemProperties;
+
+import androidx.preference.ListPreference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class BluetoothLeAudioModePreferenceControllerTest {
+
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+    @Mock
+    private DevelopmentSettingsDashboardFragment mFragment;
+    @Mock
+    private BluetoothAdapter mBluetoothAdapter;
+    @Mock
+    private ListPreference mPreference;
+
+    private Context mContext;
+    private BluetoothLeAudioModePreferenceController mController;
+    private String[] mListValues;
+    private String[] mListSummaries;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mListValues = mContext.getResources().getStringArray(
+                R.array.bluetooth_leaudio_mode_values);
+        mListSummaries = mContext.getResources().getStringArray(
+                R.array.bluetooth_leaudio_mode);
+        mController = spy(new BluetoothLeAudioModePreferenceController(mContext, mFragment));
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey()))
+                .thenReturn(mPreference);
+        mController.mBluetoothAdapter = mBluetoothAdapter;
+        mController.displayPreference(mPreferenceScreen);
+    }
+
+    @Test
+    public void onRebootDialogConfirmed_changeLeAudioMode_shouldSetLeAudioMode() {
+        mController.mChanged = true;
+        SystemProperties.set(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, mListValues[0]);
+        mController.mNewMode = mListValues[1];
+
+        mController.onRebootDialogConfirmed();
+        assertThat(SystemProperties.get(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, mListValues[0])
+                        .equals(mController.mNewMode)).isTrue();
+    }
+
+    @Test
+    public void onRebootDialogConfirmed_notChangeLeAudioMode_shouldNotSetLeAudioMode() {
+        mController.mChanged = false;
+        SystemProperties.set(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, mListValues[0]);
+        mController.mNewMode = mListValues[1];
+
+        mController.onRebootDialogConfirmed();
+        assertThat(SystemProperties.get(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, mListValues[0])
+                        .equals(mController.mNewMode)).isFalse();
+    }
+
+    @Test
+    public void onRebootDialogCanceled_shouldNotSetLeAudioMode() {
+        mController.mChanged = true;
+        SystemProperties.set(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, mListValues[0]);
+        mController.mNewMode = mListValues[1];
+
+        mController.onRebootDialogCanceled();
+        assertThat(SystemProperties.get(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, mListValues[0])
+                        .equals(mController.mNewMode)).isFalse();
+    }
+}