tests/net/java/com/android/server/connectivity/tethering/EntitlementManagerTest.java - platform/frameworks/base - Gitiles

 /*
  * 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.server.connectivity.tethering;

 import static android.net.ConnectivityManager.TETHERING_USB;
 import static android.net.ConnectivityManager.TETHERING_WIFI;
 import static android.net.ConnectivityManager.TETHER_ERROR_ENTITLEMENT_UNKONWN;
 import static android.net.ConnectivityManager.TETHER_ERROR_NO_ERROR;
 import static android.net.ConnectivityManager.TETHER_ERROR_PROVISION_FAILED;

 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 import static org.mockito.Matchers.anyBoolean;
 import static org.mockito.Matchers.anyString;
 import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.when;

 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.res.Resources;
 import android.net.util.SharedLog;
 import android.os.Bundle;
 import android.os.Message;
 import android.os.PersistableBundle;
 import android.os.ResultReceiver;
 import android.os.test.TestLooper;
 import android.provider.Settings;
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 import android.telephony.CarrierConfigManager;
 import android.test.mock.MockContentResolver;

 import com.android.internal.R;
 import com.android.internal.util.State;
 import com.android.internal.util.StateMachine;
 import com.android.internal.util.test.BroadcastInterceptingContext;
 import com.android.internal.util.test.FakeSettingsProvider;
 import com.android.server.connectivity.MockableSystemProperties;

 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 java.util.ArrayList;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;

 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public final class EntitlementManagerTest {

     private static final int EVENT_EM_UPDATE = 1;
     private static final String[] PROVISIONING_APP_NAME = {"some", "app"};

     @Mock private CarrierConfigManager mCarrierConfigManager;
     @Mock private Context mContext;
     @Mock private MockableSystemProperties mSystemProperties;
     @Mock private Resources mResources;
     @Mock private SharedLog mLog;

     // Like so many Android system APIs, these cannot be mocked because it is marked final.
     // We have to use the real versions.
     private final PersistableBundle mCarrierConfig = new PersistableBundle();
     private final TestLooper mLooper = new TestLooper();
     private Context mMockContext;
     private MockContentResolver mContentResolver;

     private TestStateMachine mSM;
     private WrappedEntitlementManager mEnMgr;

     private class MockContext extends BroadcastInterceptingContext {
         MockContext(Context base) {
             super(base);
         }

         @Override
         public Resources getResources() {
             return mResources;
         }

         @Override
         public ContentResolver getContentResolver() {
             return mContentResolver;
         }
     }

     public class WrappedEntitlementManager extends EntitlementManager {
         public int fakeEntitlementResult = TETHER_ERROR_ENTITLEMENT_UNKONWN;
         public boolean everRunUiEntitlement = false;

         public WrappedEntitlementManager(Context ctx, StateMachine target,
                 SharedLog log, MockableSystemProperties systemProperties) {
             super(ctx, target, log, systemProperties);
         }

         @Override
         protected void runUiTetherProvisioning(int type, ResultReceiver receiver) {
             everRunUiEntitlement = true;
             receiver.send(fakeEntitlementResult, null);
         }
     }

     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);

         when(mResources.getStringArray(R.array.config_tether_dhcp_range))
             .thenReturn(new String[0]);
         when(mResources.getStringArray(R.array.config_tether_usb_regexs))
             .thenReturn(new String[0]);
         when(mResources.getStringArray(R.array.config_tether_wifi_regexs))
             .thenReturn(new String[0]);
         when(mResources.getStringArray(R.array.config_tether_bluetooth_regexs))
             .thenReturn(new String[0]);
         when(mResources.getIntArray(R.array.config_tether_upstream_types))
             .thenReturn(new int[0]);
         when(mLog.forSubComponent(anyString())).thenReturn(mLog);

         mContentResolver = new MockContentResolver();
         mContentResolver.addProvider(Settings.AUTHORITY, new FakeSettingsProvider());
         mMockContext = new MockContext(mContext);
         mSM = new TestStateMachine();
         mEnMgr = new WrappedEntitlementManager(mMockContext, mSM, mLog, mSystemProperties);
         mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
     }

     @After
     public void tearDown() throws Exception {
         if (mSM != null) {
             mSM.quit();
             mSM = null;
         }
     }

     private void setupForRequiredProvisioning() {
         // Produce some acceptable looking provision app setting if requested.
         when(mResources.getStringArray(R.array.config_mobile_hotspot_provision_app))
                 .thenReturn(PROVISIONING_APP_NAME);
         // Don't disable tethering provisioning unless requested.
         when(mSystemProperties.getBoolean(eq(EntitlementManager.DISABLE_PROVISIONING_SYSPROP_KEY),
                 anyBoolean())).thenReturn(false);
         // Act like the CarrierConfigManager is present and ready unless told otherwise.
         when(mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE))
                 .thenReturn(mCarrierConfigManager);
         when(mCarrierConfigManager.getConfig()).thenReturn(mCarrierConfig);
         mCarrierConfig.putBoolean(CarrierConfigManager.KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL, true);
     }

     @Test
     public void canRequireProvisioning() {
         setupForRequiredProvisioning();
         mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
         assertTrue(mEnMgr.isTetherProvisioningRequired());
     }

     @Test
     public void toleratesCarrierConfigManagerMissing() {
         setupForRequiredProvisioning();
         when(mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE))
             .thenReturn(null);
         mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
         // Couldn't get the CarrierConfigManager, but still had a declared provisioning app.
         // Therefore provisioning still be required.
         assertTrue(mEnMgr.isTetherProvisioningRequired());
     }

     @Test
     public void toleratesCarrierConfigMissing() {
         setupForRequiredProvisioning();
         when(mCarrierConfigManager.getConfig()).thenReturn(null);
         mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
         // We still have a provisioning app configured, so still require provisioning.
         assertTrue(mEnMgr.isTetherProvisioningRequired());
     }

     @Test
     public void provisioningNotRequiredWhenAppNotFound() {
         setupForRequiredProvisioning();
         when(mResources.getStringArray(R.array.config_mobile_hotspot_provision_app))
             .thenReturn(null);
         mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
         assertFalse(mEnMgr.isTetherProvisioningRequired());
         when(mResources.getStringArray(R.array.config_mobile_hotspot_provision_app))
             .thenReturn(new String[] {"malformedApp"});
         mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
         assertFalse(mEnMgr.isTetherProvisioningRequired());
     }

     @Test
     public void testGetLastEntitlementCacheValue() throws Exception {
         final CountDownLatch mCallbacklatch = new CountDownLatch(1);
         // 1. Entitlement check is not required.
         mEnMgr.fakeEntitlementResult = TETHER_ERROR_NO_ERROR;
         mEnMgr.everRunUiEntitlement = false;
         ResultReceiver receiver = new ResultReceiver(null) {
             @Override
             protected void onReceiveResult(int resultCode, Bundle resultData) {
                 assertEquals(TETHER_ERROR_NO_ERROR, resultCode);
                 mCallbacklatch.countDown();
             }
         };
         mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, true);
         callbackTimeoutHelper(mCallbacklatch);
         assertFalse(mEnMgr.everRunUiEntitlement);

         setupForRequiredProvisioning();
         mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
         // 2. No cache value and don't need to run entitlement check.
         mEnMgr.everRunUiEntitlement = false;
         receiver = new ResultReceiver(null) {
             @Override
             protected void onReceiveResult(int resultCode, Bundle resultData) {
                 assertEquals(TETHER_ERROR_ENTITLEMENT_UNKONWN, resultCode);
                 mCallbacklatch.countDown();
             }
         };
         mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, false);
         callbackTimeoutHelper(mCallbacklatch);
         assertFalse(mEnMgr.everRunUiEntitlement);
         // 3. No cache value and ui entitlement check is needed.
         mEnMgr.fakeEntitlementResult = TETHER_ERROR_PROVISION_FAILED;
         mEnMgr.everRunUiEntitlement = false;
         receiver = new ResultReceiver(null) {
             @Override
             protected void onReceiveResult(int resultCode, Bundle resultData) {
                 assertEquals(TETHER_ERROR_PROVISION_FAILED, resultCode);
                 mCallbacklatch.countDown();
             }
         };
         mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, true);
         mLooper.dispatchAll();
         callbackTimeoutHelper(mCallbacklatch);
         assertTrue(mEnMgr.everRunUiEntitlement);
         // 4. Cache value is TETHER_ERROR_PROVISION_FAILED and don't need to run entitlement check.
         mEnMgr.fakeEntitlementResult = TETHER_ERROR_NO_ERROR;
         mEnMgr.everRunUiEntitlement = false;
         receiver = new ResultReceiver(null) {
             @Override
             protected void onReceiveResult(int resultCode, Bundle resultData) {
                 assertEquals(TETHER_ERROR_PROVISION_FAILED, resultCode);
                 mCallbacklatch.countDown();
             }
         };
         mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, false);
         callbackTimeoutHelper(mCallbacklatch);
         assertFalse(mEnMgr.everRunUiEntitlement);
         // 5. Cache value is TETHER_ERROR_PROVISION_FAILED and ui entitlement check is needed.
         mEnMgr.fakeEntitlementResult = TETHER_ERROR_NO_ERROR;
         mEnMgr.everRunUiEntitlement = false;
         receiver = new ResultReceiver(null) {
             @Override
             protected void onReceiveResult(int resultCode, Bundle resultData) {
                 assertEquals(TETHER_ERROR_NO_ERROR, resultCode);
                 mCallbacklatch.countDown();
             }
         };
         mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, true);
         mLooper.dispatchAll();
         callbackTimeoutHelper(mCallbacklatch);
         assertTrue(mEnMgr.everRunUiEntitlement);
         // 6. Cache value is TETHER_ERROR_NO_ERROR.
         mEnMgr.fakeEntitlementResult = TETHER_ERROR_NO_ERROR;
         mEnMgr.everRunUiEntitlement = false;
         receiver = new ResultReceiver(null) {
             @Override
             protected void onReceiveResult(int resultCode, Bundle resultData) {
                 assertEquals(TETHER_ERROR_NO_ERROR, resultCode);
                 mCallbacklatch.countDown();
             }
         };
         mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, true);
         callbackTimeoutHelper(mCallbacklatch);
         assertFalse(mEnMgr.everRunUiEntitlement);
         // 7. Test get value for other downstream type.
         mEnMgr.everRunUiEntitlement = false;
         receiver = new ResultReceiver(null) {
             @Override
             protected void onReceiveResult(int resultCode, Bundle resultData) {
                 assertEquals(TETHER_ERROR_ENTITLEMENT_UNKONWN, resultCode);
                 mCallbacklatch.countDown();
             }
         };
         mEnMgr.getLatestTetheringEntitlementValue(TETHERING_USB, receiver, false);
         callbackTimeoutHelper(mCallbacklatch);
         assertFalse(mEnMgr.everRunUiEntitlement);
     }

     void callbackTimeoutHelper(final CountDownLatch latch) throws Exception {
         if (!latch.await(1, TimeUnit.SECONDS)) {
             fail("Timout, fail to recieve callback");
         }
     }
     public class TestStateMachine extends StateMachine {
         public final ArrayList<Message> messages = new ArrayList<>();
         private final State mLoggingState =
                 new EntitlementManagerTest.TestStateMachine.LoggingState();

         class LoggingState extends State {
             @Override public void enter() {
                 messages.clear();
             }

             @Override public void exit() {
                 messages.clear();
             }

             @Override public boolean processMessage(Message msg) {
                 messages.add(msg);
                 return false;
             }
         }

         public TestStateMachine() {
             super("EntitlementManagerTest.TestStateMachine", mLooper.getLooper());
             addState(mLoggingState);
             setInitialState(mLoggingState);
             super.start();
         }
     }
 }
	/*
	* 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.server.connectivity.tethering;

	import static android.net.ConnectivityManager.TETHERING_USB;
	import static android.net.ConnectivityManager.TETHERING_WIFI;
	import static android.net.ConnectivityManager.TETHER_ERROR_ENTITLEMENT_UNKONWN;
	import static android.net.ConnectivityManager.TETHER_ERROR_NO_ERROR;
	import static android.net.ConnectivityManager.TETHER_ERROR_PROVISION_FAILED;

	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertFalse;
	import static org.junit.Assert.assertTrue;
	import static org.junit.Assert.fail;
	import static org.mockito.Matchers.anyBoolean;
	import static org.mockito.Matchers.anyString;
	import static org.mockito.Matchers.eq;
	import static org.mockito.Mockito.when;

	import android.content.ContentResolver;
	import android.content.Context;
	import android.content.res.Resources;
	import android.net.util.SharedLog;
	import android.os.Bundle;
	import android.os.Message;
	import android.os.PersistableBundle;
	import android.os.ResultReceiver;
	import android.os.test.TestLooper;
	import android.provider.Settings;
	import android.support.test.filters.SmallTest;
	import android.support.test.runner.AndroidJUnit4;
	import android.telephony.CarrierConfigManager;
	import android.test.mock.MockContentResolver;

	import com.android.internal.R;
	import com.android.internal.util.State;
	import com.android.internal.util.StateMachine;
	import com.android.internal.util.test.BroadcastInterceptingContext;
	import com.android.internal.util.test.FakeSettingsProvider;
	import com.android.server.connectivity.MockableSystemProperties;

	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 java.util.ArrayList;
	import java.util.concurrent.CountDownLatch;
	import java.util.concurrent.TimeUnit;

	@RunWith(AndroidJUnit4.class)
	@SmallTest
	public final class EntitlementManagerTest {

	private static final int EVENT_EM_UPDATE = 1;
	private static final String[] PROVISIONING_APP_NAME = {"some", "app"};

	@Mock private CarrierConfigManager mCarrierConfigManager;
	@Mock private Context mContext;
	@Mock private MockableSystemProperties mSystemProperties;
	@Mock private Resources mResources;
	@Mock private SharedLog mLog;

	// Like so many Android system APIs, these cannot be mocked because it is marked final.
	// We have to use the real versions.
	private final PersistableBundle mCarrierConfig = new PersistableBundle();
	private final TestLooper mLooper = new TestLooper();
	private Context mMockContext;
	private MockContentResolver mContentResolver;

	private TestStateMachine mSM;
	private WrappedEntitlementManager mEnMgr;

	private class MockContext extends BroadcastInterceptingContext {
	MockContext(Context base) {
	super(base);
	}

	@Override
	public Resources getResources() {
	return mResources;
	}

	@Override
	public ContentResolver getContentResolver() {
	return mContentResolver;
	}
	}

	public class WrappedEntitlementManager extends EntitlementManager {
	public int fakeEntitlementResult = TETHER_ERROR_ENTITLEMENT_UNKONWN;
	public boolean everRunUiEntitlement = false;

	public WrappedEntitlementManager(Context ctx, StateMachine target,
	SharedLog log, MockableSystemProperties systemProperties) {
	super(ctx, target, log, systemProperties);
	}

	@Override
	protected void runUiTetherProvisioning(int type, ResultReceiver receiver) {
	everRunUiEntitlement = true;
	receiver.send(fakeEntitlementResult, null);
	}
	}

	@Before
	public void setUp() {
	MockitoAnnotations.initMocks(this);

	when(mResources.getStringArray(R.array.config_tether_dhcp_range))
	.thenReturn(new String[0]);
	when(mResources.getStringArray(R.array.config_tether_usb_regexs))
	.thenReturn(new String[0]);
	when(mResources.getStringArray(R.array.config_tether_wifi_regexs))
	.thenReturn(new String[0]);
	when(mResources.getStringArray(R.array.config_tether_bluetooth_regexs))
	.thenReturn(new String[0]);
	when(mResources.getIntArray(R.array.config_tether_upstream_types))
	.thenReturn(new int[0]);
	when(mLog.forSubComponent(anyString())).thenReturn(mLog);

	mContentResolver = new MockContentResolver();
	mContentResolver.addProvider(Settings.AUTHORITY, new FakeSettingsProvider());
	mMockContext = new MockContext(mContext);
	mSM = new TestStateMachine();
	mEnMgr = new WrappedEntitlementManager(mMockContext, mSM, mLog, mSystemProperties);
	mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
	}

	@After
	public void tearDown() throws Exception {
	if (mSM != null) {
	mSM.quit();
	mSM = null;
	}
	}

	private void setupForRequiredProvisioning() {
	// Produce some acceptable looking provision app setting if requested.
	when(mResources.getStringArray(R.array.config_mobile_hotspot_provision_app))
	.thenReturn(PROVISIONING_APP_NAME);
	// Don't disable tethering provisioning unless requested.
	when(mSystemProperties.getBoolean(eq(EntitlementManager.DISABLE_PROVISIONING_SYSPROP_KEY),
	anyBoolean())).thenReturn(false);
	// Act like the CarrierConfigManager is present and ready unless told otherwise.
	when(mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE))
	.thenReturn(mCarrierConfigManager);
	when(mCarrierConfigManager.getConfig()).thenReturn(mCarrierConfig);
	mCarrierConfig.putBoolean(CarrierConfigManager.KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL, true);
	}

	@Test
	public void canRequireProvisioning() {
	setupForRequiredProvisioning();
	mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
	assertTrue(mEnMgr.isTetherProvisioningRequired());
	}

	@Test
	public void toleratesCarrierConfigManagerMissing() {
	setupForRequiredProvisioning();
	when(mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE))
	.thenReturn(null);
	mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
	// Couldn't get the CarrierConfigManager, but still had a declared provisioning app.
	// Therefore provisioning still be required.
	assertTrue(mEnMgr.isTetherProvisioningRequired());
	}

	@Test
	public void toleratesCarrierConfigMissing() {
	setupForRequiredProvisioning();
	when(mCarrierConfigManager.getConfig()).thenReturn(null);
	mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
	// We still have a provisioning app configured, so still require provisioning.
	assertTrue(mEnMgr.isTetherProvisioningRequired());
	}

	@Test
	public void provisioningNotRequiredWhenAppNotFound() {
	setupForRequiredProvisioning();
	when(mResources.getStringArray(R.array.config_mobile_hotspot_provision_app))
	.thenReturn(null);
	mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
	assertFalse(mEnMgr.isTetherProvisioningRequired());
	when(mResources.getStringArray(R.array.config_mobile_hotspot_provision_app))
	.thenReturn(new String[] {"malformedApp"});
	mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
	assertFalse(mEnMgr.isTetherProvisioningRequired());
	}

	@Test
	public void testGetLastEntitlementCacheValue() throws Exception {
	final CountDownLatch mCallbacklatch = new CountDownLatch(1);
	// 1. Entitlement check is not required.
	mEnMgr.fakeEntitlementResult = TETHER_ERROR_NO_ERROR;
	mEnMgr.everRunUiEntitlement = false;
	ResultReceiver receiver = new ResultReceiver(null) {
	@Override
	protected void onReceiveResult(int resultCode, Bundle resultData) {
	assertEquals(TETHER_ERROR_NO_ERROR, resultCode);
	mCallbacklatch.countDown();
	}
	};
	mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, true);
	callbackTimeoutHelper(mCallbacklatch);
	assertFalse(mEnMgr.everRunUiEntitlement);

	setupForRequiredProvisioning();
	mEnMgr.updateConfiguration(new TetheringConfiguration(mMockContext, mLog));
	// 2. No cache value and don't need to run entitlement check.
	mEnMgr.everRunUiEntitlement = false;
	receiver = new ResultReceiver(null) {
	@Override
	protected void onReceiveResult(int resultCode, Bundle resultData) {
	assertEquals(TETHER_ERROR_ENTITLEMENT_UNKONWN, resultCode);
	mCallbacklatch.countDown();
	}
	};
	mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, false);
	callbackTimeoutHelper(mCallbacklatch);
	assertFalse(mEnMgr.everRunUiEntitlement);
	// 3. No cache value and ui entitlement check is needed.
	mEnMgr.fakeEntitlementResult = TETHER_ERROR_PROVISION_FAILED;
	mEnMgr.everRunUiEntitlement = false;
	receiver = new ResultReceiver(null) {
	@Override
	protected void onReceiveResult(int resultCode, Bundle resultData) {
	assertEquals(TETHER_ERROR_PROVISION_FAILED, resultCode);
	mCallbacklatch.countDown();
	}
	};
	mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, true);
	mLooper.dispatchAll();
	callbackTimeoutHelper(mCallbacklatch);
	assertTrue(mEnMgr.everRunUiEntitlement);
	// 4. Cache value is TETHER_ERROR_PROVISION_FAILED and don't need to run entitlement check.
	mEnMgr.fakeEntitlementResult = TETHER_ERROR_NO_ERROR;
	mEnMgr.everRunUiEntitlement = false;
	receiver = new ResultReceiver(null) {
	@Override
	protected void onReceiveResult(int resultCode, Bundle resultData) {
	assertEquals(TETHER_ERROR_PROVISION_FAILED, resultCode);
	mCallbacklatch.countDown();
	}
	};
	mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, false);
	callbackTimeoutHelper(mCallbacklatch);
	assertFalse(mEnMgr.everRunUiEntitlement);
	// 5. Cache value is TETHER_ERROR_PROVISION_FAILED and ui entitlement check is needed.
	mEnMgr.fakeEntitlementResult = TETHER_ERROR_NO_ERROR;
	mEnMgr.everRunUiEntitlement = false;
	receiver = new ResultReceiver(null) {
	@Override
	protected void onReceiveResult(int resultCode, Bundle resultData) {
	assertEquals(TETHER_ERROR_NO_ERROR, resultCode);
	mCallbacklatch.countDown();
	}
	};
	mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, true);
	mLooper.dispatchAll();
	callbackTimeoutHelper(mCallbacklatch);
	assertTrue(mEnMgr.everRunUiEntitlement);
	// 6. Cache value is TETHER_ERROR_NO_ERROR.
	mEnMgr.fakeEntitlementResult = TETHER_ERROR_NO_ERROR;
	mEnMgr.everRunUiEntitlement = false;
	receiver = new ResultReceiver(null) {
	@Override
	protected void onReceiveResult(int resultCode, Bundle resultData) {
	assertEquals(TETHER_ERROR_NO_ERROR, resultCode);
	mCallbacklatch.countDown();
	}
	};
	mEnMgr.getLatestTetheringEntitlementValue(TETHERING_WIFI, receiver, true);
	callbackTimeoutHelper(mCallbacklatch);
	assertFalse(mEnMgr.everRunUiEntitlement);
	// 7. Test get value for other downstream type.
	mEnMgr.everRunUiEntitlement = false;
	receiver = new ResultReceiver(null) {
	@Override
	protected void onReceiveResult(int resultCode, Bundle resultData) {
	assertEquals(TETHER_ERROR_ENTITLEMENT_UNKONWN, resultCode);
	mCallbacklatch.countDown();
	}
	};
	mEnMgr.getLatestTetheringEntitlementValue(TETHERING_USB, receiver, false);
	callbackTimeoutHelper(mCallbacklatch);
	assertFalse(mEnMgr.everRunUiEntitlement);
	}

	void callbackTimeoutHelper(final CountDownLatch latch) throws Exception {
	if (!latch.await(1, TimeUnit.SECONDS)) {
	fail("Timout, fail to recieve callback");
	}
	}
	public class TestStateMachine extends StateMachine {
	public final ArrayList<Message> messages = new ArrayList<>();
	private final State mLoggingState =
	new EntitlementManagerTest.TestStateMachine.LoggingState();

	class LoggingState extends State {
	@Override public void enter() {
	messages.clear();
	}

	@Override public void exit() {
	messages.clear();
	}

	@Override public boolean processMessage(Message msg) {
	messages.add(msg);
	return false;
	}
	}

	public TestStateMachine() {
	super("EntitlementManagerTest.TestStateMachine", mLooper.getLooper());
	addState(mLoggingState);
	setInitialState(mLoggingState);
	super.start();
	}
	}
	}