Add index for Hotspot settings page into search

Added index provider into TetherSettings and WifiTetherSettings pages.
Added robotests to check the keys returned by getNonIndexableKeys.
Move repeated code into utility class.

Bug: 74777873
Test: make -j RunSettingsRoboTests
Test: atest UniquePreferenceTest
Change-Id: I6cb09d735afa4867d25a79de733ce8c59634e49b

tests/robotests/src/com/android/settings/TetherSettingsTest.java

@@ -0,0 +1,150 @@
+/*
+ * 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;
+
+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.when;
+
+import android.content.Context;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.net.ConnectivityManager;
+
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+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 java.util.ArrayList;
+import java.util.List;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class TetherSettingsTest {
+
+    private Context mContext;
+
+    @Mock
+    private ConnectivityManager mConnectivityManager;
+    @Mock
+    private UserManager mUserManager;
+
+    @Before
+    public void setUp() {
+        mContext = spy(RuntimeEnvironment.application);
+
+        MockitoAnnotations.initMocks(this);
+        doReturn(mConnectivityManager)
+                .when(mContext).getSystemService(Context.CONNECTIVITY_SERVICE);
+        doReturn(mUserManager)
+                .when(mContext).getSystemService(Context.USER_SERVICE);
+
+        setupIsTetherAvailable(true);
+
+        when(mConnectivityManager.getTetherableUsbRegexs()).thenReturn(new String[]{});
+        when(mConnectivityManager.getTetherableBluetoothRegexs()).thenReturn(new String[]{});
+    }
+
+    @Test
+    public void testTetherNonIndexableKeys_tetherAvailable_keysNotReturned() {
+        // To let TetherUtil.isTetherAvailable return true, select one of the combinations
+        setupIsTetherAvailable(true);
+
+        final List<String> niks =
+                TetherSettings.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(mContext);
+
+        assertThat(niks).doesNotContain(TetherSettings.KEY_TETHER_PREFS_SCREEN);
+        assertThat(niks).doesNotContain(TetherSettings.KEY_WIFI_TETHER);
+    }
+
+    @Test
+    public void testTetherNonIndexableKeys_tetherNotAvailable_keysReturned() {
+        // To let TetherUtil.isTetherAvailable return false, select one of the combinations
+        setupIsTetherAvailable(false);
+
+        final List<String> niks =
+                TetherSettings.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(mContext);
+
+        assertThat(niks).contains(TetherSettings.KEY_TETHER_PREFS_SCREEN);
+        assertThat(niks).contains(TetherSettings.KEY_WIFI_TETHER);
+    }
+
+    @Test
+    public void testTetherNonIndexableKeys_usbNotAvailable_usbKeyReturned() {
+        when(mConnectivityManager.getTetherableUsbRegexs()).thenReturn(new String[]{});
+
+        final List<String> niks =
+            TetherSettings.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(mContext);
+
+        assertThat(niks).contains(TetherSettings.KEY_USB_TETHER_SETTINGS);
+    }
+
+    @Test
+    public void testTetherNonIndexableKeys_usbAvailable_usbKeyNotReturned() {
+        // We can ignore the condition of Utils.isMonkeyRunning()
+        // In normal case, monkey and robotest should not execute at the same time
+        when(mConnectivityManager.getTetherableUsbRegexs()).thenReturn(new String[]{"dummyRegex"});
+
+        final List<String> niks =
+            TetherSettings.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(mContext);
+
+        assertThat(niks).doesNotContain(TetherSettings.KEY_USB_TETHER_SETTINGS);
+    }
+
+    @Test
+    public void testTetherNonIndexableKeys_bluetoothNotAvailable_bluetoothKeyReturned() {
+        when(mConnectivityManager.getTetherableBluetoothRegexs()).thenReturn(new String[]{});
+
+        final List<String> niks =
+            TetherSettings.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(mContext);
+
+        assertThat(niks).contains(TetherSettings.KEY_ENABLE_BLUETOOTH_TETHERING);
+    }
+
+    @Test
+    public void testTetherNonIndexableKeys_bluetoothAvailable_bluetoothKeyNotReturned() {
+        when(mConnectivityManager.getTetherableBluetoothRegexs())
+                .thenReturn(new String[]{"dummyRegex"});
+
+        final List<String> niks =
+            TetherSettings.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(mContext);
+
+        assertThat(niks).doesNotContain(TetherSettings.KEY_ENABLE_BLUETOOTH_TETHERING);
+    }
+
+    private void setupIsTetherAvailable(boolean returnValue) {
+        when(mConnectivityManager.isTetheringSupported()).thenReturn(true);
+
+        // For RestrictedLockUtils.checkIfRestrictionEnforced
+        final int userId = UserHandle.myUserId();
+        List<UserManager.EnforcingUser> enforcingUsers = new ArrayList<>();
+        when(mUserManager.getUserRestrictionSources(
+                UserManager.DISALLOW_CONFIG_TETHERING, UserHandle.of(userId)))
+                .thenReturn(enforcingUsers);
+
+        // For RestrictedLockUtils.hasBaseUserRestriction
+        when(mUserManager.hasBaseUserRestriction(
+                UserManager.DISALLOW_CONFIG_TETHERING, UserHandle.of(userId)))
+                .thenReturn(!returnValue);
+    }
+}