Let fragment and indexProvider share prefControllers

Bug: 35812240
Test: make RunSettingsRoboTests
Change-Id: Ifd96f935836a52e0a56f170f3cdf9b9ddf7c499a

tests/robotests/src/com/android/settings/search/BaseSearchIndexProviderTest.java

@@ -0,0 +1,99 @@
+/*
+ * 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.search;
+
+
+import android.content.Context;
+
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.core.PreferenceController;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class BaseSearchIndexProviderTest {
+
+    private static final String TEST_PREF_KEY = "test_pref_key";
+
+    @Mock
+    private Context mContext;
+    private BaseSearchIndexProvider mIndexProvider;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mIndexProvider = spy(BaseSearchIndexProvider.class);
+    }
+
+    @Test
+    public void getNonIndexableKeys_noPreferenceController_shouldReturnEmptyList() {
+        assertThat(mIndexProvider.getNonIndexableKeys(mContext)).isEqualTo(Collections.EMPTY_LIST);
+    }
+
+    @Test
+    public void getNonIndexableKeys_preferenceIsAvailable_shouldReturnEmptyList() {
+        List<PreferenceController> controllers = new ArrayList<>();
+        controllers.add(new PreferenceController(mContext) {
+            @Override
+            public boolean isAvailable() {
+                return true;
+            }
+
+            @Override
+            public String getPreferenceKey() {
+                return TEST_PREF_KEY;
+            }
+        });
+        doReturn(controllers).when(mIndexProvider).getPreferenceControllers(mContext);
+
+        assertThat(mIndexProvider.getNonIndexableKeys(mContext)).isEqualTo(Collections.EMPTY_LIST);
+    }
+
+    @Test
+    public void getNonIndexableKeys_preferenceIsNotAvailable_shouldReturnKey() {
+        List<PreferenceController> controllers = new ArrayList<>();
+        controllers.add(new PreferenceController(mContext) {
+            @Override
+            public boolean isAvailable() {
+                return false;
+            }
+
+            @Override
+            public String getPreferenceKey() {
+                return TEST_PREF_KEY;
+            }
+        });
+        doReturn(controllers).when(mIndexProvider).getPreferenceControllers(mContext);
+
+        assertThat(mIndexProvider.getNonIndexableKeys(mContext)).contains(TEST_PREF_KEY);
+    }
+}