Add developer menu entry to enable Bluetooth AVDTP delay reports

Bug: 32755225
Test: Manual test with a device that supports delay reporting;
Robolectric tests
Change-Id: I8f121dd7f94bce3a07deb9cb23c698829cbecd96

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

@@ -0,0 +1,129 @@
+/*
+ * 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.BluetoothDelayReportsPreferenceController
+        .BLUETOOTH_ENABLE_AVDTP_DELAY_REPORTS_PROPERTY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.SettingsShadowSystemProperties;
+
+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 BluetoothDelayReportsPreferenceControllerTest {
+
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+
+    private Context mContext;
+    private SwitchPreference mPreference;
+    private BluetoothDelayReportsPreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mPreference = new SwitchPreference(mContext);
+        mController = spy(new BluetoothDelayReportsPreferenceController(mContext));
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey())).thenReturn(
+                mPreference);
+        mController.displayPreference(mPreferenceScreen);
+    }
+
+    @Test
+    public void onPreferenceChanged_settingEnabled_turnOnDelayReports() {
+        mController.onPreferenceChange(mPreference, true /* new value */);
+
+        final boolean mode = SettingsShadowSystemProperties.getBoolean(
+                BLUETOOTH_ENABLE_AVDTP_DELAY_REPORTS_PROPERTY, false /* default */);
+
+        assertThat(mode).isTrue();
+    }
+
+    @Test
+    public void onPreferenceChanged_settingDisabled_turnOffDelayReports() {
+        mController.onPreferenceChange(mPreference, false /* new value */);
+
+        final boolean mode = SettingsShadowSystemProperties.getBoolean(
+                BLUETOOTH_ENABLE_AVDTP_DELAY_REPORTS_PROPERTY, false /* default */);
+
+        assertThat(mode).isFalse();
+    }
+
+    @Test
+    public void updateState_settingEnabled_preferenceShouldBeChecked() {
+        SettingsShadowSystemProperties.set(BLUETOOTH_ENABLE_AVDTP_DELAY_REPORTS_PROPERTY,
+                Boolean.toString(true));
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.isChecked()).isTrue();
+    }
+
+    @Test
+    public void updateState_settingDisabled_preferenceShouldNotBeChecked() {
+        SettingsShadowSystemProperties.set(BLUETOOTH_ENABLE_AVDTP_DELAY_REPORTS_PROPERTY,
+                Boolean.toString(false));
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.isChecked()).isFalse();
+    }
+
+    @Test
+    public void onDeveloperOptionsDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsDisabled();
+
+        final boolean mode = SettingsShadowSystemProperties.getBoolean(
+                BLUETOOTH_ENABLE_AVDTP_DELAY_REPORTS_PROPERTY, false /* default */);
+
+        assertThat(mode).isFalse();
+        assertThat(mPreference.isEnabled()).isFalse();
+        assertThat(mPreference.isChecked()).isFalse();
+    }
+
+    @Test
+    public void onDeveloperOptionsEnabled_shouldEnablePreference() {
+        mController.onDeveloperOptionsEnabled();
+
+        final boolean mode = SettingsShadowSystemProperties.getBoolean(
+                BLUETOOTH_ENABLE_AVDTP_DELAY_REPORTS_PROPERTY, false /* default */);
+
+        assertThat(mode).isFalse();
+        assertThat(mPreference.isEnabled()).isTrue();
+        assertThat(mPreference.isChecked()).isFalse();
+    }
+}