Fork a new developer options page.

- Create a new activity/fragment and add it to manifest
- Mark old activity/fragment deprecated
- Enable/disable the new activity based on FeatureFlag
- Initial skeleton code for new fragment

Bug: 65522852
Test: make RunSettingsRoboTests -j40 ROBOTEST_FILTER=DevelopmentSettingsDashboardFragmentTest
Change-Id: Ib1395693f8b6f61d4726573a9ea841ea53cf207b

tests/robotests/src/android/util/FeatureFlagUtils.java

@@ -0,0 +1,46 @@
+/*
+ * 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 android.util;
+
+import android.os.SystemProperties;
+import android.text.TextUtils;
+
+/**
+ * This class is only needed to get around Robolectric issue.
+ */
+public class FeatureFlagUtils {
+    public static final String FFLAG_PREFIX = "sys.fflag.";
+    public static final String FFLAG_OVERRIDE_PREFIX = FFLAG_PREFIX + "override.";
+
+    /**
+     * Whether or not a flag is enabled.
+     *
+     * @param feature the flag name
+     * @return true if the flag is enabled (either by default in system, or override by user)
+     */
+    public static boolean isEnabled(String feature) {
+        // Tries to get feature flag from system property.
+        // Step 1: check if feature flag has any override. Flag name: sys.fflag.override.<feature>
+        String value = SystemProperties.get(FFLAG_OVERRIDE_PREFIX + feature);
+        if (!TextUtils.isEmpty(value)) {
+            return Boolean.parseBoolean(value);
+        }
+        // Step 2: check if feature flag has any default value. Flag name: sys.fflag.<feature>
+        value = SystemProperties.get(FFLAG_PREFIX + feature);
+        return Boolean.parseBoolean(value);
+    }
+}

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

@@ -0,0 +1,98 @@
+/*
+ * 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.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.provider.SearchIndexableResource;
+
+import com.android.internal.logging.nano.MetricsProto;
+import com.android.settings.R;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.SettingsShadowResources;
+import com.android.settingslib.development.DevelopmentSettingsEnabler;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+import java.util.List;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION,
+        shadows = {
+                SettingsShadowResources.class,
+                SettingsShadowResources.SettingsShadowTheme.class
+        })
+public class DevelopmentSettingsDashboardFragmentTest {
+
+    private DevelopmentSettingsDashboardFragment mDashboard;
+
+    @Before
+    public void setUp() {
+        mDashboard = new DevelopmentSettingsDashboardFragment();
+    }
+
+    @Test
+    public void shouldNotHaveHelpResource() {
+        assertThat(mDashboard.getHelpResource()).isEqualTo(0);
+    }
+
+    @Test
+    public void shouldLogAsFeatureFlagPage() {
+        assertThat(mDashboard.getMetricsCategory())
+                .isEqualTo(MetricsProto.MetricsEvent.DEVELOPMENT);
+    }
+
+    @Test
+    public void searchIndex_shouldIndexFromPrefXml() {
+        final List<SearchIndexableResource> index =
+                DevelopmentSettingsDashboardFragment.SEARCH_INDEX_DATA_PROVIDER
+                        .getXmlResourcesToIndex(RuntimeEnvironment.application, true);
+
+        assertThat(index.size()).isEqualTo(1);
+        assertThat(index.get(0).xmlResId).isEqualTo(R.xml.development_prefs);
+    }
+
+    @Test
+    public void searchIndex_pageDisabled_shouldAddAllKeysToNonIndexable() {
+        final Context appContext = RuntimeEnvironment.application;
+        DevelopmentSettingsEnabler.setDevelopmentSettingsEnabled(appContext, false);
+
+        final List<String> nonIndexableKeys =
+                DevelopmentSettingsDashboardFragment.SEARCH_INDEX_DATA_PROVIDER
+                        .getNonIndexableKeys(appContext);
+
+        assertThat(nonIndexableKeys).contains("development_prefs_screen");
+    }
+
+    @Test
+    public void searchIndex_pageEnabled_shouldNotAddKeysToNonIndexable() {
+        final Context appContext = RuntimeEnvironment.application;
+        DevelopmentSettingsEnabler.setDevelopmentSettingsEnabled(appContext, true);
+
+        final List<String> nonIndexableKeys =
+                DevelopmentSettingsDashboardFragment.SEARCH_INDEX_DATA_PROVIDER
+                        .getNonIndexableKeys(appContext);
+
+        assertThat(nonIndexableKeys).doesNotContain("development_prefs_screen");
+    }
+}