Merge "Add developer menu to select max number of connected audio devices"

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

@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2018 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.BluetoothMaxConnectedAudioDevicesPreferenceController
+        .BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_PROPERTY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.os.SystemProperties;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.SettingsShadowSystemProperties;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH,
+        sdk = TestConfig.SDK_VERSION,
+        shadows = {SettingsShadowSystemProperties.class})
+public class BluetoothMaxConnectedAudioDevicesPreferenceControllerTest {
+
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+
+    private Context mContext;
+    private ListPreference mPreference;
+    private BluetoothMaxConnectedAudioDevicesPreferenceController mController;
+
+    /**
+     * 0: 1 device maximum (Default)
+     * 1: 2 devices maximum
+     * 2: 3 devices maximum
+     * 3: 4 devices maximum
+     * 4: 5 devices maximum
+     */
+    private String[] mListValues;
+    private String[] mListSummaries;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mPreference = new ListPreference(mContext);
+        mListValues = mContext.getResources().getStringArray(
+                R.array.bluetooth_max_connected_audio_devices_values);
+        mListSummaries = mContext.getResources().getStringArray(
+                R.array.bluetooth_max_connected_audio_devices);
+        mController = new BluetoothMaxConnectedAudioDevicesPreferenceController(mContext);
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey())).thenReturn(
+                mPreference);
+        mController.displayPreference(mPreferenceScreen);
+    }
+
+    @After
+    public void teardown() {
+        SettingsShadowSystemProperties.clear();
+    }
+
+    @Test
+    public void onPreferenceChange_setNumberOfDevices() {
+        for (int numberOfDevices = 0; numberOfDevices < mListValues.length; numberOfDevices++) {
+            mController.onPreferenceChange(mPreference, mListValues[numberOfDevices]);
+
+            final String currentValue = SystemProperties.get(
+                    BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_PROPERTY);
+
+            assertThat(currentValue).isEqualTo(mListValues[numberOfDevices]);
+        }
+    }
+
+    @Test
+    public void updateState_NumberOfDevicesUpdated_shouldSetPreference() {
+        for (int numberOfDevices = 0; numberOfDevices < mListValues.length; numberOfDevices++) {
+            SystemProperties.set(BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_PROPERTY,
+                    mListValues[numberOfDevices]);
+
+            mController.updateState(mPreference);
+
+            assertThat(mPreference.getValue()).isEqualTo(mListValues[numberOfDevices]);
+            assertThat(mPreference.getSummary()).isEqualTo(mListSummaries[numberOfDevices]);
+        }
+    }
+
+    @Test
+    public void updateState_noValueSet_shouldSetDefaultTo1device() {
+        SystemProperties.set(BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_PROPERTY, "garbage");
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.getValue()).isEqualTo(mListValues[0]);
+        assertThat(mPreference.getSummary()).isEqualTo(mListSummaries[0]);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsSwitchDisabled();
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.isEnabled()).isFalse();
+        assertThat(mPreference.getValue()).isEqualTo(mListValues[0]);
+        assertThat(mPreference.getSummary()).isEqualTo(mListSummaries[0]);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchEnabled_shouldEnablePreference() {
+        mController.onDeveloperOptionsSwitchEnabled();
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.isEnabled()).isTrue();
+        assertThat(mPreference.getValue()).isEqualTo(mListValues[0]);
+        assertThat(mPreference.getSummary()).isEqualTo(mListSummaries[0]);
+    }
+}