Introduce HdcpCheckingPreferenceController

- Create new HdcpCheckingPreferenceController
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: Id6eed501ce658b55dc4ad38f7408994f70923194

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

@@ -248,7 +248,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         // take bug report
         controllers.add(new LocalBackupPasswordPreferenceController(context));
         controllers.add(new StayAwakePreferenceController(context, lifecycle));
-        // hdcp checking
+        controllers.add(new HdcpCheckingPreferenceController(context));
         controllers.add(new BluetoothSnoopLogPreferenceController(context));
         controllers.add(new OemUnlockPreferenceController(context, activity, fragment));
         // running services

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

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2017 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 android.content.Context;
+import android.os.Build;
+import android.os.SystemProperties;
+import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.text.TextUtils;
+
+import com.android.settings.R;
+import com.android.settingslib.development.SystemPropPoker;
+
+public class HdcpCheckingPreferenceController extends
+        DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener {
+
+    private static final String HDCP_CHECKING_KEY = "hdcp_checking";
+
+    @VisibleForTesting
+    static final String HDCP_CHECKING_PROPERTY = "persist.sys.hdcp_checking";
+    @VisibleForTesting
+    static final String USER_BUILD_TYPE = "user";
+
+    private final String[] mListValues;
+    private final String[] mListSummaries;
+    private ListPreference mPreference;
+
+    public HdcpCheckingPreferenceController(Context context) {
+        super(context);
+
+        mListValues = mContext.getResources().getStringArray(R.array.hdcp_checking_values);
+        mListSummaries = mContext.getResources().getStringArray(R.array.hdcp_checking_summaries);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return !TextUtils.equals(USER_BUILD_TYPE, getBuildType());
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return HDCP_CHECKING_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        mPreference = (ListPreference) screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        SystemProperties.set(HDCP_CHECKING_PROPERTY, newValue.toString());
+        updateHdcpValues();
+        SystemPropPoker.getInstance().poke();
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        updateHdcpValues();
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        mPreference.setEnabled(true);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        mPreference.setEnabled(false);
+    }
+
+    private void updateHdcpValues() {
+        final String currentValue = SystemProperties.get(HDCP_CHECKING_PROPERTY);
+        int index = 1; // Defaults to drm-only. Needs to match with R.array.hdcp_checking_values
+        for (int i = 0; i < mListValues.length; i++) {
+            if (TextUtils.equals(currentValue, mListValues[i])) {
+                index = i;
+                break;
+            }
+        }
+        mPreference.setValue(mListValues[index]);
+        mPreference.setSummary(mListSummaries[index]);
+    }
+
+    @VisibleForTesting
+    public String getBuildType() {
+        return Build.TYPE;
+    }
+}

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

@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2017 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.HdcpCheckingPreferenceController
+        .HDCP_CHECKING_PROPERTY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+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 HdcpCheckingPreferenceControllerTest {
+
+    private static final String USER_DEBUG = "userdebug";
+
+    @Mock
+    private ListPreference mPreference;
+    @Mock
+    private PreferenceScreen mScreen;
+
+    private Context mContext;
+    private HdcpCheckingPreferenceController mController;
+
+    /**
+     * Array Values Key
+     *
+     * 0: Never Check
+     * 1: Check for DRM content only
+     * 2: Always Check
+     */
+    private String[] mValues;
+    private String[] mSummaries;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mValues = mContext.getResources().getStringArray(R.array.hdcp_checking_values);
+        mSummaries = mContext.getResources().getStringArray(R.array.hdcp_checking_summaries);
+        mController = new HdcpCheckingPreferenceController(mContext);
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+        mController.displayPreference(mScreen);
+
+    }
+
+    @After
+    public void teardown() {
+        SettingsShadowSystemProperties.clear();
+    }
+
+    @Test
+    public void isAvailable_isUserBuildType_shouldReturnFalse() {
+        mController = spy(mController);
+        doReturn(HdcpCheckingPreferenceController.USER_BUILD_TYPE).when(mController).getBuildType();
+
+        assertThat(mController.isAvailable()).isFalse();
+    }
+
+    @Test
+    public void isAvailable_isUserDebugBuildType_shouldReturnTrue() {
+        mController = spy(mController);
+        doReturn(USER_DEBUG).when(mController).getBuildType();
+
+        assertThat(mController.isAvailable()).isTrue();
+    }
+
+    @Test
+    public void onPreferenceChange_setNeverCheckHdcp_shouldEnableNeverCheckHdcp() {
+        mController.onPreferenceChange(mPreference, mValues[0]);
+
+        assertThat(SystemProperties.get(HDCP_CHECKING_PROPERTY)).isEqualTo(mValues[0]);
+    }
+
+    @Test
+    public void onPreferenceChange_setCheckDrm_shouldEnableCheckDrm() {
+        mController.onPreferenceChange(mPreference, mValues[1]);
+
+        assertThat(SystemProperties.get(HDCP_CHECKING_PROPERTY)).isEqualTo(mValues[1]);
+    }
+
+    @Test
+    public void updateState_neverCheckHdcp_shouldEnableNeverCheckHdcp() {
+        SystemProperties.set(HDCP_CHECKING_PROPERTY, mValues[0]);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mValues[0]);
+        verify(mPreference).setSummary(mSummaries[0]);
+    }
+
+    @Test
+    public void updateState_checkDrm_shouldEnableCheckDrm() {
+        SystemProperties.set(HDCP_CHECKING_PROPERTY, mValues[1]);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mValues[1]);
+        verify(mPreference).setSummary(mSummaries[1]);
+    }
+
+    @Test
+    public void updateState_noValueSet_shouldEnableCheckDrmAsDefault() {
+        SystemProperties.set(HDCP_CHECKING_PROPERTY, null);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mValues[1]);
+        verify(mPreference).setSummary(mSummaries[1]);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsSwitchDisabled();
+
+        verify(mPreference).setEnabled(false);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchEnabled_shouldEnablePreference() {
+        mController.onDeveloperOptionsSwitchEnabled();
+
+        verify(mPreference).setEnabled(true);
+    }
+}