service/tests/wifitests/src/com/android/server/wifi/ScoredNetworkNominatorTest.java - platform/packages/modules/Wifi - Git at Google

 /*
  * Copyright (C) 2016 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.server.wifi;

 import static com.android.server.wifi.WifiConfigurationTestUtil.SECURITY_NONE;
 import static com.android.server.wifi.WifiConfigurationTestUtil.SECURITY_PSK;

 import static org.junit.Assert.*;
 import static org.mockito.Mockito.*;

 import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.database.ContentObserver;
 import android.net.NetworkKey;
 import android.net.NetworkScoreManager;
 import android.net.NetworkScorerAppData;
 import android.net.Uri;
 import android.net.wifi.ScanResult;
 import android.net.wifi.WifiConfiguration;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.SystemClock;
 import android.provider.Settings;
 import android.util.LocalLog;

 import androidx.test.filters.SmallTest;

 import com.android.server.wifi.WifiNetworkSelector.NetworkNominator.OnConnectableListener;
 import com.android.server.wifi.WifiNetworkSelectorTestUtil.ScanDetailsAndWifiConfigs;
 import com.android.server.wifi.util.WifiPermissionsUtil;

 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Captor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;

 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;

 /**
  * Unit tests for {@link ScoredNetworkNominator}.
  */
 @SmallTest
 public class ScoredNetworkNominatorTest extends WifiBaseTest {
     private static final String TEST_PACKAGE_NAME = "name.package.test";
     private static final int TEST_UID = 12345;
     private static final NetworkScorerAppData TEST_APP_DATA = new NetworkScorerAppData(
             TEST_UID, null, null, null, null);
     private ContentObserver mContentObserver;
     private int mThresholdQualifiedRssi2G;
     private int mThresholdQualifiedRssi5G;

     @Mock private Context mContext;
     @Mock private Clock mClock;
     @Mock private FrameworkFacade mFrameworkFacade;
     @Mock private NetworkScoreManager mNetworkScoreManager;
     @Mock private PackageManager mPackageManager;
     @Mock private WifiConfigManager mWifiConfigManager;
     @Mock private WifiPermissionsUtil mWifiPermissionsUtil;
     @Mock private OnConnectableListener mOnConnectableListener;
     @Captor private ArgumentCaptor<Collection<NetworkKey>> mNetworkKeyCollectionCaptor;
     @Captor private ArgumentCaptor<WifiConfiguration> mWifiConfigCaptor;

     private WifiNetworkScoreCache mScoreCache;
     private ScoredNetworkNominator mScoredNetworkNominator;

     @Before
     public void setUp() throws Exception {
         mThresholdQualifiedRssi2G = -73;
         mThresholdQualifiedRssi5G = -70;

         MockitoAnnotations.initMocks(this);

         when(mFrameworkFacade.getIntegerSetting(mContext,
                 Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED, 0))
                 .thenReturn(1);
         ApplicationInfo appInfo = new ApplicationInfo();
         appInfo.uid = TEST_UID;
         when(mPackageManager.getApplicationInfo(any(), anyInt()))
                 .thenReturn(appInfo);

         ArgumentCaptor<ContentObserver> observerCaptor =
                 ArgumentCaptor.forClass(ContentObserver.class);
         mScoreCache = new WifiNetworkScoreCache(mContext);
         mScoredNetworkNominator = new ScoredNetworkNominator(mContext,
                 new Handler(Looper.getMainLooper()), mFrameworkFacade, mNetworkScoreManager,
                 mPackageManager, mWifiConfigManager, new LocalLog(0), mScoreCache,
                 mWifiPermissionsUtil);
         verify(mFrameworkFacade).registerContentObserver(eq(mContext), any(Uri.class), eq(false),
                 observerCaptor.capture());
         mContentObserver = observerCaptor.getValue();

         reset(mNetworkScoreManager);
         when(mNetworkScoreManager.getActiveScorer())
                 .thenReturn(TEST_APP_DATA);
         when(mNetworkScoreManager.getActiveScorerPackage())
                 .thenReturn(TEST_PACKAGE_NAME);

         when(mClock.getElapsedSinceBootMillis()).thenReturn(SystemClock.elapsedRealtime());
     }

     @After
     public void tearDown() {
         validateMockitoUsage();
     }

     @Test
     public void testUpdate_recommendationsDisabled() {
         String[] ssids = {"\"test1\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3"};
         int[] freqs = {2470};
         String[] caps = {"[WPA2-PSK][ESS]"};
         int[] levels = {mThresholdQualifiedRssi2G + 8};
         int[] securities = {SECURITY_PSK};

         ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
                 .setupScanDetailsAndConfigStore(
                 ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

         when(mFrameworkFacade.getIntegerSetting(mContext,
                 Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED, 0))
                 .thenReturn(0);

         mContentObserver.onChange(false /* unused */);

         mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

         verifyZeroInteractions(mNetworkScoreManager);
     }

     @Test
     public void testUpdate_emptyScanList() {
         String[] ssids = {"\"test1\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3"};
         int[] freqs = {2470};
         String[] caps = {"[WPA2-PSK][ESS]"};
         int[] levels = {mThresholdQualifiedRssi2G + 8};
         int[] securities = {SECURITY_PSK};

         ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
                 .setupScanDetailsAndConfigStore(
                         ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

         mScoredNetworkNominator.update(new ArrayList<ScanDetail>());

         verifyZeroInteractions(mNetworkScoreManager);
     }

     @Test
     public void testUpdate_allNetworksUnscored() {
         String[] ssids = {"\"test1\"", "\"test2\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
         int[] freqs = {2470, 2437};
         String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
         int[] securities = {SECURITY_PSK, SECURITY_NONE};
         int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};

         ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
                 .setupScanDetailsAndConfigStore(
                         ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

         mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

         verify(mNetworkScoreManager).requestScores(mNetworkKeyCollectionCaptor.capture());
         NetworkKey[] requestedScores =
                 mNetworkKeyCollectionCaptor.getValue().toArray(new NetworkKey[0]);
         assertEquals(2, requestedScores.length);
         NetworkKey expectedNetworkKey = NetworkKey.createFromScanResult(
                 scanDetailsAndConfigs.getScanDetails().get(0).getScanResult());
         assertEquals(expectedNetworkKey, requestedScores[0]);
         expectedNetworkKey = NetworkKey.createFromScanResult(
                 scanDetailsAndConfigs.getScanDetails().get(1).getScanResult());
         assertEquals(expectedNetworkKey, requestedScores[1]);
     }

     @Test
     public void testUpdate_oneScored_oneUnscored() {
         String[] ssids = {"\"test1\"", "\"test2\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
         int[] freqs = {2470, 2437};
         String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
         int[] securities = {SECURITY_PSK, SECURITY_NONE};
         int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};

         ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
                 .setupScanDetailsAndConfigStore(
                         ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

         List<ScanDetail> scoredScanDetails = scanDetailsAndConfigs.getScanDetails().subList(0, 1);
         Integer[] scores = {120};
         boolean[] meteredHints = {true};
         WifiNetworkSelectorTestUtil.configureScoreCache(
                 mScoreCache, scoredScanDetails, scores, meteredHints);

         mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

         verify(mNetworkScoreManager).requestScores(mNetworkKeyCollectionCaptor.capture());

         NetworkKey[] requestedScores =
                 mNetworkKeyCollectionCaptor.getValue().toArray(new NetworkKey[0]);
         assertEquals(1, requestedScores.length);
         NetworkKey expectedNetworkKey = NetworkKey.createFromScanResult(
                 scanDetailsAndConfigs.getScanDetails().get(1).getScanResult());
         assertEquals(expectedNetworkKey, requestedScores[0]);
     }

     @Test
     public void testEvaluateNetworks_recommendationsDisabled() {
         when(mFrameworkFacade.getIntegerSetting(mContext,
                 Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED, 0))
                 .thenReturn(0);

         mContentObserver.onChange(false /* unused */);

         mScoredNetworkNominator.nominateNetworks(null, null, null, false, false,
                 mOnConnectableListener);

         verifyZeroInteractions(mWifiConfigManager, mNetworkScoreManager);
     }

     @Test
     public void testUpdate_externalScorerNotPermittedToSeeScanResults() {
         String[] ssids = {"\"test1\"", "\"test2\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
         int[] freqs = {2470, 2437};
         String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
         int[] securities = {SECURITY_PSK, SECURITY_NONE};
         int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};

         doThrow(new SecurityException()).when(mWifiPermissionsUtil).enforceCanAccessScanResults(
                 any(), any(), anyInt(), any());

         ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
                 .setupScanDetailsAndConfigStore(
                         ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

         mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

         verify(mNetworkScoreManager, never()).requestScores(anyCollection());
         verify(mWifiPermissionsUtil).enforceCanAccessScanResults(
                 eq(TEST_PACKAGE_NAME), eq(null), eq(TEST_UID), nullable(String.class));
     }

     @Test
     public void testUpdate_externalScorerNotPermittedToSeeScanResultsWithException() {
         String[] ssids = {"\"test1\"", "\"test2\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
         int[] freqs = {2470, 2437};
         String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
         int[] securities = {SECURITY_PSK, SECURITY_NONE};
         int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};

         doThrow(new SecurityException()).when(mWifiPermissionsUtil).enforceCanAccessScanResults(
                 any(), any(), anyInt(), any());

         ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
                 .setupScanDetailsAndConfigStore(
                         ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

         mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

         verify(mNetworkScoreManager, never()).requestScores(anyCollection());
         verify(mWifiPermissionsUtil).enforceCanAccessScanResults(
                 eq(TEST_PACKAGE_NAME), eq(null), eq(TEST_UID), nullable(String.class));
     }

     /**
      * When we have created a new ephemeral network, make sure that mOnConnectableListener
      * is called.
      */
     @Test
     public void testEvaluateNetworks_newEphemeralNetworkMustBeReportedAsConnectable() {
         String[] ssids = {"\"test1\"", "\"test2\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
         int[] freqs = {2470, 2437};
         String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
         int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};
         Integer[] scores = {null, 120};
         boolean[] meteredHints = {false, false};
         List<ScanDetail> scanDetails = WifiNetworkSelectorTestUtil.buildScanDetails(
                 ssids, bssids, freqs, caps, levels, mClock);
         WifiNetworkSelectorTestUtil.configureScoreCache(mScoreCache,
                 scanDetails, scores, meteredHints);
         ScanResult scanResult = scanDetails.get(1).getScanResult();
         WifiConfiguration ephemeralNetworkConfig = WifiNetworkSelectorTestUtil
                 .setupEphemeralNetwork(mWifiConfigManager, 1, scanDetails.get(1), meteredHints[1]);
         // No saved networks.
         when(mWifiConfigManager.getConfiguredNetworkForScanDetailAndCache(any(ScanDetail.class)))
                 .thenReturn(null);
         // But when we create one, this is should be it.
         when(mWifiConfigManager.addOrUpdateNetwork(any(), anyInt()))
                 .thenReturn(new NetworkUpdateResult(1));
         // Untrusted networks allowed.
         mScoredNetworkNominator.nominateNetworks(scanDetails,
                 null, null, false, true, mOnConnectableListener);
         verify(mOnConnectableListener, atLeastOnce())
                 .onConnectable(any(), mWifiConfigCaptor.capture());
         assertTrue(mWifiConfigCaptor.getAllValues().stream()
                 .anyMatch(c -> c.networkId == ephemeralNetworkConfig.networkId));
     }

     /**
      * Don't choose available ephemeral networks if no saved networks and untrusted networks
      * are not allowed.
      */
     @Test
     public void testEvaluateNetworks_noEphemeralNetworkWhenUntrustedNetworksNotAllowed() {
         String[] ssids = {"\"test1\"", "\"test2\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
         int[] freqs = {2470, 2437};
         String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
         int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};
         Integer[] scores = {null, 120};
         boolean[] meteredHints = {false, true};

         List<ScanDetail> scanDetails = WifiNetworkSelectorTestUtil.buildScanDetails(
                 ssids, bssids, freqs, caps, levels, mClock);
         WifiNetworkSelectorTestUtil.configureScoreCache(mScoreCache,
                 scanDetails, scores, meteredHints);

         // No saved networks.
         when(mWifiConfigManager.getConfiguredNetworkForScanDetailAndCache(any(ScanDetail.class)))
                 .thenReturn(null);

         WifiNetworkSelectorTestUtil.setupEphemeralNetwork(
                 mWifiConfigManager, 1, scanDetails.get(1), meteredHints[1]);

         // Untrusted networks not allowed.
         mScoredNetworkNominator.nominateNetworks(scanDetails,
                 null, null, false, false, mOnConnectableListener);

         verify(mOnConnectableListener, never()).onConnectable(any(), any());
     }

     /**
      * Choose externally scored saved network.
      */
     @Test
     public void testEvaluateNetworks_chooseSavedNetworkWithExternalScore() {
         String[] ssids = {"\"test1\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3"};
         int[] freqs = {5200};
         String[] caps = {"[WPA2-PSK][ESS]"};
         int[] securities = {SECURITY_PSK};
         int[] levels = {mThresholdQualifiedRssi5G + 8};
         Integer[] scores = {120};
         boolean[] meteredHints = {false};

         WifiNetworkSelectorTestUtil.ScanDetailsAndWifiConfigs scanDetailsAndConfigs =
                 WifiNetworkSelectorTestUtil.setupScanDetailsAndConfigStore(ssids, bssids,
                         freqs, caps, levels, securities, mWifiConfigManager, mClock);
         List<ScanDetail> scanDetails = scanDetailsAndConfigs.getScanDetails();
         WifiConfiguration[] savedConfigs = scanDetailsAndConfigs.getWifiConfigs();
         savedConfigs[0].useExternalScores = true;

         WifiNetworkSelectorTestUtil.configureScoreCache(mScoreCache,
                 scanDetails, scores, meteredHints);

         mScoredNetworkNominator.nominateNetworks(scanDetails,
                 null, null, false, true, mOnConnectableListener);

         verify(mOnConnectableListener).onConnectable(any(), mWifiConfigCaptor.capture());
         assertEquals(mWifiConfigCaptor.getValue().networkId, savedConfigs[0].networkId);
     }

     /**
      * Prefer externally scored saved network over untrusted network when they have
      * the same score.
      */
     @Test
     public void testEvaluateNetworks_nullScoredNetworks() {
         String[] ssids = {"\"test1\"", "\"test2\""};
         String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
         int[] freqs = {2470, 2437};
         String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
         int[] securities = {SECURITY_PSK, SECURITY_NONE};
         int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 8};
         Integer[] scores = {null, null};
         boolean[] meteredHints = {false, true};

         WifiNetworkSelectorTestUtil.ScanDetailsAndWifiConfigs scanDetailsAndConfigs =
                 WifiNetworkSelectorTestUtil.setupScanDetailsAndConfigStore(ssids, bssids,
                         freqs, caps, levels, securities, mWifiConfigManager, mClock);
         List<ScanDetail> scanDetails = scanDetailsAndConfigs.getScanDetails();
         WifiConfiguration[] savedConfigs = scanDetailsAndConfigs.getWifiConfigs();
         savedConfigs[0].useExternalScores = true;

         WifiNetworkSelectorTestUtil.configureScoreCache(mScoreCache,
                 scanDetails, scores, meteredHints);

         mScoredNetworkNominator.nominateNetworks(scanDetails,
                 null, null, false, true, mOnConnectableListener);

         verify(mOnConnectableListener).onConnectable(any(), mWifiConfigCaptor.capture());
         assertEquals(mWifiConfigCaptor.getValue().networkId, savedConfigs[0].networkId);
     }
 }
	/*
	* Copyright (C) 2016 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.server.wifi;

	import static com.android.server.wifi.WifiConfigurationTestUtil.SECURITY_NONE;
	import static com.android.server.wifi.WifiConfigurationTestUtil.SECURITY_PSK;

	import static org.junit.Assert.*;
	import static org.mockito.Mockito.*;

	import android.content.Context;
	import android.content.pm.ApplicationInfo;
	import android.content.pm.PackageManager;
	import android.database.ContentObserver;
	import android.net.NetworkKey;
	import android.net.NetworkScoreManager;
	import android.net.NetworkScorerAppData;
	import android.net.Uri;
	import android.net.wifi.ScanResult;
	import android.net.wifi.WifiConfiguration;
	import android.os.Handler;
	import android.os.Looper;
	import android.os.SystemClock;
	import android.provider.Settings;
	import android.util.LocalLog;

	import androidx.test.filters.SmallTest;

	import com.android.server.wifi.WifiNetworkSelector.NetworkNominator.OnConnectableListener;
	import com.android.server.wifi.WifiNetworkSelectorTestUtil.ScanDetailsAndWifiConfigs;
	import com.android.server.wifi.util.WifiPermissionsUtil;

	import org.junit.After;
	import org.junit.Before;
	import org.junit.Test;
	import org.mockito.ArgumentCaptor;
	import org.mockito.Captor;
	import org.mockito.Mock;
	import org.mockito.MockitoAnnotations;

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.List;

	/**
	* Unit tests for {@link ScoredNetworkNominator}.
	*/
	@SmallTest
	public class ScoredNetworkNominatorTest extends WifiBaseTest {
	private static final String TEST_PACKAGE_NAME = "name.package.test";
	private static final int TEST_UID = 12345;
	private static final NetworkScorerAppData TEST_APP_DATA = new NetworkScorerAppData(
	TEST_UID, null, null, null, null);
	private ContentObserver mContentObserver;
	private int mThresholdQualifiedRssi2G;
	private int mThresholdQualifiedRssi5G;

	@Mock private Context mContext;
	@Mock private Clock mClock;
	@Mock private FrameworkFacade mFrameworkFacade;
	@Mock private NetworkScoreManager mNetworkScoreManager;
	@Mock private PackageManager mPackageManager;
	@Mock private WifiConfigManager mWifiConfigManager;
	@Mock private WifiPermissionsUtil mWifiPermissionsUtil;
	@Mock private OnConnectableListener mOnConnectableListener;
	@Captor private ArgumentCaptor<Collection<NetworkKey>> mNetworkKeyCollectionCaptor;
	@Captor private ArgumentCaptor<WifiConfiguration> mWifiConfigCaptor;

	private WifiNetworkScoreCache mScoreCache;
	private ScoredNetworkNominator mScoredNetworkNominator;

	@Before
	public void setUp() throws Exception {
	mThresholdQualifiedRssi2G = -73;
	mThresholdQualifiedRssi5G = -70;

	MockitoAnnotations.initMocks(this);

	when(mFrameworkFacade.getIntegerSetting(mContext,
	Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED, 0))
	.thenReturn(1);
	ApplicationInfo appInfo = new ApplicationInfo();
	appInfo.uid = TEST_UID;
	when(mPackageManager.getApplicationInfo(any(), anyInt()))
	.thenReturn(appInfo);

	ArgumentCaptor<ContentObserver> observerCaptor =
	ArgumentCaptor.forClass(ContentObserver.class);
	mScoreCache = new WifiNetworkScoreCache(mContext);
	mScoredNetworkNominator = new ScoredNetworkNominator(mContext,
	new Handler(Looper.getMainLooper()), mFrameworkFacade, mNetworkScoreManager,
	mPackageManager, mWifiConfigManager, new LocalLog(0), mScoreCache,
	mWifiPermissionsUtil);
	verify(mFrameworkFacade).registerContentObserver(eq(mContext), any(Uri.class), eq(false),
	observerCaptor.capture());
	mContentObserver = observerCaptor.getValue();

	reset(mNetworkScoreManager);
	when(mNetworkScoreManager.getActiveScorer())
	.thenReturn(TEST_APP_DATA);
	when(mNetworkScoreManager.getActiveScorerPackage())
	.thenReturn(TEST_PACKAGE_NAME);

	when(mClock.getElapsedSinceBootMillis()).thenReturn(SystemClock.elapsedRealtime());
	}

	@After
	public void tearDown() {
	validateMockitoUsage();
	}

	@Test
	public void testUpdate_recommendationsDisabled() {
	String[] ssids = {"\"test1\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3"};
	int[] freqs = {2470};
	String[] caps = {"[WPA2-PSK][ESS]"};
	int[] levels = {mThresholdQualifiedRssi2G + 8};
	int[] securities = {SECURITY_PSK};

	ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
	.setupScanDetailsAndConfigStore(
	ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

	when(mFrameworkFacade.getIntegerSetting(mContext,
	Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED, 0))
	.thenReturn(0);

	mContentObserver.onChange(false /* unused */);

	mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

	verifyZeroInteractions(mNetworkScoreManager);
	}

	@Test
	public void testUpdate_emptyScanList() {
	String[] ssids = {"\"test1\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3"};
	int[] freqs = {2470};
	String[] caps = {"[WPA2-PSK][ESS]"};
	int[] levels = {mThresholdQualifiedRssi2G + 8};
	int[] securities = {SECURITY_PSK};

	ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
	.setupScanDetailsAndConfigStore(
	ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

	mScoredNetworkNominator.update(new ArrayList<ScanDetail>());

	verifyZeroInteractions(mNetworkScoreManager);
	}

	@Test
	public void testUpdate_allNetworksUnscored() {
	String[] ssids = {"\"test1\"", "\"test2\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
	int[] freqs = {2470, 2437};
	String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
	int[] securities = {SECURITY_PSK, SECURITY_NONE};
	int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};

	ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
	.setupScanDetailsAndConfigStore(
	ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

	mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

	verify(mNetworkScoreManager).requestScores(mNetworkKeyCollectionCaptor.capture());
	NetworkKey[] requestedScores =
	mNetworkKeyCollectionCaptor.getValue().toArray(new NetworkKey[0]);
	assertEquals(2, requestedScores.length);
	NetworkKey expectedNetworkKey = NetworkKey.createFromScanResult(
	scanDetailsAndConfigs.getScanDetails().get(0).getScanResult());
	assertEquals(expectedNetworkKey, requestedScores[0]);
	expectedNetworkKey = NetworkKey.createFromScanResult(
	scanDetailsAndConfigs.getScanDetails().get(1).getScanResult());
	assertEquals(expectedNetworkKey, requestedScores[1]);
	}

	@Test
	public void testUpdate_oneScored_oneUnscored() {
	String[] ssids = {"\"test1\"", "\"test2\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
	int[] freqs = {2470, 2437};
	String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
	int[] securities = {SECURITY_PSK, SECURITY_NONE};
	int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};

	ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
	.setupScanDetailsAndConfigStore(
	ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

	List<ScanDetail> scoredScanDetails = scanDetailsAndConfigs.getScanDetails().subList(0, 1);
	Integer[] scores = {120};
	boolean[] meteredHints = {true};
	WifiNetworkSelectorTestUtil.configureScoreCache(
	mScoreCache, scoredScanDetails, scores, meteredHints);

	mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

	verify(mNetworkScoreManager).requestScores(mNetworkKeyCollectionCaptor.capture());

	NetworkKey[] requestedScores =
	mNetworkKeyCollectionCaptor.getValue().toArray(new NetworkKey[0]);
	assertEquals(1, requestedScores.length);
	NetworkKey expectedNetworkKey = NetworkKey.createFromScanResult(
	scanDetailsAndConfigs.getScanDetails().get(1).getScanResult());
	assertEquals(expectedNetworkKey, requestedScores[0]);
	}

	@Test
	public void testEvaluateNetworks_recommendationsDisabled() {
	when(mFrameworkFacade.getIntegerSetting(mContext,
	Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED, 0))
	.thenReturn(0);

	mContentObserver.onChange(false /* unused */);

	mScoredNetworkNominator.nominateNetworks(null, null, null, false, false,
	mOnConnectableListener);

	verifyZeroInteractions(mWifiConfigManager, mNetworkScoreManager);
	}

	@Test
	public void testUpdate_externalScorerNotPermittedToSeeScanResults() {
	String[] ssids = {"\"test1\"", "\"test2\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
	int[] freqs = {2470, 2437};
	String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
	int[] securities = {SECURITY_PSK, SECURITY_NONE};
	int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};

	doThrow(new SecurityException()).when(mWifiPermissionsUtil).enforceCanAccessScanResults(
	any(), any(), anyInt(), any());

	ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
	.setupScanDetailsAndConfigStore(
	ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

	mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

	verify(mNetworkScoreManager, never()).requestScores(anyCollection());
	verify(mWifiPermissionsUtil).enforceCanAccessScanResults(
	eq(TEST_PACKAGE_NAME), eq(null), eq(TEST_UID), nullable(String.class));
	}

	@Test
	public void testUpdate_externalScorerNotPermittedToSeeScanResultsWithException() {
	String[] ssids = {"\"test1\"", "\"test2\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
	int[] freqs = {2470, 2437};
	String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
	int[] securities = {SECURITY_PSK, SECURITY_NONE};
	int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};

	doThrow(new SecurityException()).when(mWifiPermissionsUtil).enforceCanAccessScanResults(
	any(), any(), anyInt(), any());

	ScanDetailsAndWifiConfigs scanDetailsAndConfigs = WifiNetworkSelectorTestUtil
	.setupScanDetailsAndConfigStore(
	ssids, bssids, freqs, caps, levels, securities, mWifiConfigManager, mClock);

	mScoredNetworkNominator.update(scanDetailsAndConfigs.getScanDetails());

	verify(mNetworkScoreManager, never()).requestScores(anyCollection());
	verify(mWifiPermissionsUtil).enforceCanAccessScanResults(
	eq(TEST_PACKAGE_NAME), eq(null), eq(TEST_UID), nullable(String.class));
	}

	/**
	* When we have created a new ephemeral network, make sure that mOnConnectableListener
	* is called.
	*/
	@Test
	public void testEvaluateNetworks_newEphemeralNetworkMustBeReportedAsConnectable() {
	String[] ssids = {"\"test1\"", "\"test2\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
	int[] freqs = {2470, 2437};
	String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
	int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};
	Integer[] scores = {null, 120};
	boolean[] meteredHints = {false, false};
	List<ScanDetail> scanDetails = WifiNetworkSelectorTestUtil.buildScanDetails(
	ssids, bssids, freqs, caps, levels, mClock);
	WifiNetworkSelectorTestUtil.configureScoreCache(mScoreCache,
	scanDetails, scores, meteredHints);
	ScanResult scanResult = scanDetails.get(1).getScanResult();
	WifiConfiguration ephemeralNetworkConfig = WifiNetworkSelectorTestUtil
	.setupEphemeralNetwork(mWifiConfigManager, 1, scanDetails.get(1), meteredHints[1]);
	// No saved networks.
	when(mWifiConfigManager.getConfiguredNetworkForScanDetailAndCache(any(ScanDetail.class)))
	.thenReturn(null);
	// But when we create one, this is should be it.
	when(mWifiConfigManager.addOrUpdateNetwork(any(), anyInt()))
	.thenReturn(new NetworkUpdateResult(1));
	// Untrusted networks allowed.
	mScoredNetworkNominator.nominateNetworks(scanDetails,
	null, null, false, true, mOnConnectableListener);
	verify(mOnConnectableListener, atLeastOnce())
	.onConnectable(any(), mWifiConfigCaptor.capture());
	assertTrue(mWifiConfigCaptor.getAllValues().stream()
	.anyMatch(c -> c.networkId == ephemeralNetworkConfig.networkId));
	}

	/**
	* Don't choose available ephemeral networks if no saved networks and untrusted networks
	* are not allowed.
	*/
	@Test
	public void testEvaluateNetworks_noEphemeralNetworkWhenUntrustedNetworksNotAllowed() {
	String[] ssids = {"\"test1\"", "\"test2\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
	int[] freqs = {2470, 2437};
	String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
	int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 10};
	Integer[] scores = {null, 120};
	boolean[] meteredHints = {false, true};

	List<ScanDetail> scanDetails = WifiNetworkSelectorTestUtil.buildScanDetails(
	ssids, bssids, freqs, caps, levels, mClock);
	WifiNetworkSelectorTestUtil.configureScoreCache(mScoreCache,
	scanDetails, scores, meteredHints);

	// No saved networks.
	when(mWifiConfigManager.getConfiguredNetworkForScanDetailAndCache(any(ScanDetail.class)))
	.thenReturn(null);

	WifiNetworkSelectorTestUtil.setupEphemeralNetwork(
	mWifiConfigManager, 1, scanDetails.get(1), meteredHints[1]);

	// Untrusted networks not allowed.
	mScoredNetworkNominator.nominateNetworks(scanDetails,
	null, null, false, false, mOnConnectableListener);

	verify(mOnConnectableListener, never()).onConnectable(any(), any());
	}

	/**
	* Choose externally scored saved network.
	*/
	@Test
	public void testEvaluateNetworks_chooseSavedNetworkWithExternalScore() {
	String[] ssids = {"\"test1\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3"};
	int[] freqs = {5200};
	String[] caps = {"[WPA2-PSK][ESS]"};
	int[] securities = {SECURITY_PSK};
	int[] levels = {mThresholdQualifiedRssi5G + 8};
	Integer[] scores = {120};
	boolean[] meteredHints = {false};

	WifiNetworkSelectorTestUtil.ScanDetailsAndWifiConfigs scanDetailsAndConfigs =
	WifiNetworkSelectorTestUtil.setupScanDetailsAndConfigStore(ssids, bssids,
	freqs, caps, levels, securities, mWifiConfigManager, mClock);
	List<ScanDetail> scanDetails = scanDetailsAndConfigs.getScanDetails();
	WifiConfiguration[] savedConfigs = scanDetailsAndConfigs.getWifiConfigs();
	savedConfigs[0].useExternalScores = true;

	WifiNetworkSelectorTestUtil.configureScoreCache(mScoreCache,
	scanDetails, scores, meteredHints);

	mScoredNetworkNominator.nominateNetworks(scanDetails,
	null, null, false, true, mOnConnectableListener);

	verify(mOnConnectableListener).onConnectable(any(), mWifiConfigCaptor.capture());
	assertEquals(mWifiConfigCaptor.getValue().networkId, savedConfigs[0].networkId);
	}

	/**
	* Prefer externally scored saved network over untrusted network when they have
	* the same score.
	*/
	@Test
	public void testEvaluateNetworks_nullScoredNetworks() {
	String[] ssids = {"\"test1\"", "\"test2\""};
	String[] bssids = {"6c:f3:7f:ae:8c:f3", "6c:f3:7f:ae:8c:f4"};
	int[] freqs = {2470, 2437};
	String[] caps = {"[WPA2-PSK][ESS]", "[ESS]"};
	int[] securities = {SECURITY_PSK, SECURITY_NONE};
	int[] levels = {mThresholdQualifiedRssi2G + 8, mThresholdQualifiedRssi2G + 8};
	Integer[] scores = {null, null};
	boolean[] meteredHints = {false, true};

	WifiNetworkSelectorTestUtil.ScanDetailsAndWifiConfigs scanDetailsAndConfigs =
	WifiNetworkSelectorTestUtil.setupScanDetailsAndConfigStore(ssids, bssids,
	freqs, caps, levels, securities, mWifiConfigManager, mClock);
	List<ScanDetail> scanDetails = scanDetailsAndConfigs.getScanDetails();
	WifiConfiguration[] savedConfigs = scanDetailsAndConfigs.getWifiConfigs();
	savedConfigs[0].useExternalScores = true;

	WifiNetworkSelectorTestUtil.configureScoreCache(mScoreCache,
	scanDetails, scores, meteredHints);

	mScoredNetworkNominator.nominateNetworks(scanDetails,
	null, null, false, true, mOnConnectableListener);

	verify(mOnConnectableListener).onConnectable(any(), mWifiConfigCaptor.capture());
	assertEquals(mWifiConfigCaptor.getValue().networkId, savedConfigs[0].networkId);
	}
	}