Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java - platform/packages/modules/Connectivity - Git at Google

 /*
  * Copyright (C) 2020 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.networkstack.tethering;

 import static android.Manifest.permission.ACCESS_NETWORK_STATE;
 import static android.Manifest.permission.TETHER_PRIVILEGED;
 import static android.Manifest.permission.WRITE_SETTINGS;
 import static android.net.TetheringManager.TETHERING_WIFI;
 import static android.net.TetheringManager.TETHER_ERROR_NO_ACCESS_TETHERING_PERMISSION;
 import static android.net.TetheringManager.TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION;
 import static android.net.TetheringManager.TETHER_ERROR_NO_ERROR;

 import static org.junit.Assert.assertEquals;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoMoreInteractions;
 import static org.mockito.Mockito.when;

 import android.app.UiAutomation;
 import android.content.Intent;
 import android.net.IIntResultListener;
 import android.net.ITetheringConnector;
 import android.net.ITetheringEventCallback;
 import android.net.TetheringRequestParcel;
 import android.net.ip.IpServer;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.ResultReceiver;

 import androidx.test.InstrumentationRegistry;
 import androidx.test.filters.SmallTest;
 import androidx.test.rule.ServiceTestRule;
 import androidx.test.runner.AndroidJUnit4;

 import com.android.networkstack.tethering.MockTetheringService.MockTetheringConnector;

 import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;

 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public final class TetheringServiceTest {
     private static final String TEST_IFACE_NAME = "test_wlan0";
     private static final String TEST_CALLER_PKG = "com.android.shell";
     private static final String TEST_ATTRIBUTION_TAG = null;
     @Mock private ITetheringEventCallback mITetheringEventCallback;
     @Rule public ServiceTestRule mServiceTestRule;
     private Tethering mTethering;
     private Intent mMockServiceIntent;
     private ITetheringConnector mTetheringConnector;
     private UiAutomation mUiAutomation;

     private class TestTetheringResult extends IIntResultListener.Stub {
         private int mResult = -1; // Default value that does not match any result code.
         @Override
         public void onResult(final int resultCode) {
             mResult = resultCode;
         }

         public void assertResult(final int expected) {
             assertEquals(expected, mResult);
         }
     }

     private class MyResultReceiver extends ResultReceiver {
         MyResultReceiver(Handler handler) {
             super(handler);
         }
         private int mResult = -1; // Default value that does not match any result code.
         @Override
         protected void onReceiveResult(int resultCode, Bundle resultData) {
             mResult = resultCode;
         }

         public void assertResult(int expected) {
             assertEquals(expected, mResult);
         }
     }

     @Before
     public void setUp() throws Exception {
         MockitoAnnotations.initMocks(this);
         mUiAutomation =
             InstrumentationRegistry.getInstrumentation().getUiAutomation();
         mServiceTestRule = new ServiceTestRule();
         mMockServiceIntent = new Intent(
                 InstrumentationRegistry.getTargetContext(),
                 MockTetheringService.class);
         final MockTetheringConnector mockConnector =
                 (MockTetheringConnector) mServiceTestRule.bindService(mMockServiceIntent);
         mTetheringConnector = mockConnector.getTetheringConnector();
         final MockTetheringService service = mockConnector.getService();
         mTethering = service.getTethering();
     }

     @After
     public void tearDown() throws Exception {
         mServiceTestRule.unbindService();
         mUiAutomation.dropShellPermissionIdentity();
     }

     private interface TestTetheringCall {
         void runTetheringCall(TestTetheringResult result) throws Exception;
     }

     private void runAsNoPermission(final TestTetheringCall test) throws Exception {
         runTetheringCall(test, new String[0]);
     }

     private void runAsTetherPrivileged(final TestTetheringCall test) throws Exception {
         runTetheringCall(test, TETHER_PRIVILEGED);
     }

     private void runAsAccessNetworkState(final TestTetheringCall test) throws Exception {
         runTetheringCall(test, ACCESS_NETWORK_STATE);
     }

     private void runAsWriteSettings(final TestTetheringCall test) throws Exception {
         runTetheringCall(test, WRITE_SETTINGS);
     }

     private void runTetheringCall(final TestTetheringCall test, String... permissions)
             throws Exception {
         if (permissions.length > 0) mUiAutomation.adoptShellPermissionIdentity(permissions);
         try {
             when(mTethering.isTetheringSupported()).thenReturn(true);
             test.runTetheringCall(new TestTetheringResult());
         } finally {
             mUiAutomation.dropShellPermissionIdentity();
         }
     }

     private void verifyNoMoreInteractionsForTethering() {
         verifyNoMoreInteractions(mTethering);
         verifyNoMoreInteractions(mITetheringEventCallback);
         reset(mTethering, mITetheringEventCallback);
     }

     private void runTether(final TestTetheringResult result) throws Exception {
         mTetheringConnector.tether(TEST_IFACE_NAME, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG, result);
         verify(mTethering).isTetheringSupported();
         verify(mTethering).tether(TEST_IFACE_NAME, IpServer.STATE_TETHERED, result);
     }

     @Test
     public void testTether() throws Exception {
         runAsNoPermission((result) -> {
             mTetheringConnector.tether(TEST_IFACE_NAME, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
                     result);
             verify(mTethering).isTetherProvisioningRequired();
             result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((result) -> {
             runTether(result);
             verifyNoMoreInteractionsForTethering();
         });

         runAsWriteSettings((result) -> {
             runTether(result);
             verify(mTethering).isTetherProvisioningRequired();
             verifyNoMoreInteractionsForTethering();
         });
     }

     private void runUnTether(final TestTetheringResult result) throws Exception {
         mTetheringConnector.untether(TEST_IFACE_NAME, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
                 result);
         verify(mTethering).isTetheringSupported();
         verify(mTethering).untether(eq(TEST_IFACE_NAME), eq(result));
     }

     @Test
     public void testUntether() throws Exception {
         runAsNoPermission((result) -> {
             mTetheringConnector.untether(TEST_IFACE_NAME, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
                     result);
             verify(mTethering).isTetherProvisioningRequired();
             result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((result) -> {
             runUnTether(result);
             verifyNoMoreInteractionsForTethering();
         });

         runAsWriteSettings((result) -> {
             runUnTether(result);
             verify(mTethering).isTetherProvisioningRequired();
             verifyNoMoreInteractionsForTethering();
         });
     }

     private void runSetUsbTethering(final TestTetheringResult result) throws Exception {
         when(mTethering.setUsbTethering(true /* enable */)).thenReturn(TETHER_ERROR_NO_ERROR);
         mTetheringConnector.setUsbTethering(true /* enable */, TEST_CALLER_PKG,
                 TEST_ATTRIBUTION_TAG, result);
         verify(mTethering).isTetheringSupported();
         verify(mTethering).setUsbTethering(true /* enable */);
         result.assertResult(TETHER_ERROR_NO_ERROR);
     }

     @Test
     public void testSetUsbTethering() throws Exception {
         runAsNoPermission((result) -> {
             mTetheringConnector.setUsbTethering(true /* enable */, TEST_CALLER_PKG,
                     TEST_ATTRIBUTION_TAG, result);
             verify(mTethering).isTetherProvisioningRequired();
             result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((result) -> {
             runSetUsbTethering(result);
             verifyNoMoreInteractionsForTethering();
         });

         runAsWriteSettings((result) -> {
             runSetUsbTethering(result);
             verify(mTethering).isTetherProvisioningRequired();
             verifyNoMoreInteractionsForTethering();
         });

     }

     private void runStartTethering(final TestTetheringResult result,
             final TetheringRequestParcel request) throws Exception {
         mTetheringConnector.startTethering(request, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
                 result);
         verify(mTethering).isTetheringSupported();
         verify(mTethering).startTethering(eq(request), eq(result));
     }

     @Test
     public void testStartTethering() throws Exception {
         final TetheringRequestParcel request = new TetheringRequestParcel();
         request.tetheringType = TETHERING_WIFI;

         runAsNoPermission((result) -> {
             mTetheringConnector.startTethering(request, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
                     result);
             verify(mTethering).isTetherProvisioningRequired();
             result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((result) -> {
             runStartTethering(result, request);
             verifyNoMoreInteractionsForTethering();
         });

         runAsWriteSettings((result) -> {
             runStartTethering(result, request);
             verify(mTethering).isTetherProvisioningRequired();
             verifyNoMoreInteractionsForTethering();
         });
     }

     private void runStartTetheringAndVerifyNoPermission(final TestTetheringResult result)
             throws Exception {
         final TetheringRequestParcel request = new TetheringRequestParcel();
         request.tetheringType = TETHERING_WIFI;
         request.exemptFromEntitlementCheck = true;
         mTetheringConnector.startTethering(request, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
                 result);
         result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
         verifyNoMoreInteractionsForTethering();
     }

     @Test
     public void testFailToBypassEntitlementWithoutNeworkStackPermission() throws Exception {
         final TetheringRequestParcel request = new TetheringRequestParcel();
         request.tetheringType = TETHERING_WIFI;
         request.exemptFromEntitlementCheck = true;

         runAsNoPermission((result) -> {
             runStartTetheringAndVerifyNoPermission(result);
         });

         runAsTetherPrivileged((result) -> {
             runStartTetheringAndVerifyNoPermission(result);
         });

         runAsWriteSettings((result) -> {
             runStartTetheringAndVerifyNoPermission(result);
         });
     }

     private void runStopTethering(final TestTetheringResult result) throws Exception {
         mTetheringConnector.stopTethering(TETHERING_WIFI, TEST_CALLER_PKG,
                 TEST_ATTRIBUTION_TAG, result);
         verify(mTethering).isTetheringSupported();
         verify(mTethering).stopTethering(TETHERING_WIFI);
         result.assertResult(TETHER_ERROR_NO_ERROR);
     }

     @Test
     public void testStopTethering() throws Exception {
         runAsNoPermission((result) -> {
             mTetheringConnector.stopTethering(TETHERING_WIFI, TEST_CALLER_PKG,
                     TEST_ATTRIBUTION_TAG, result);
             verify(mTethering).isTetherProvisioningRequired();
             result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((result) -> {
             runStopTethering(result);
             verifyNoMoreInteractionsForTethering();
         });

         runAsWriteSettings((result) -> {
             runStopTethering(result);
             verify(mTethering).isTetherProvisioningRequired();
             verifyNoMoreInteractionsForTethering();
         });
     }

     private void runRequestLatestTetheringEntitlementResult() throws Exception {
         final MyResultReceiver result = new MyResultReceiver(null);
         mTetheringConnector.requestLatestTetheringEntitlementResult(TETHERING_WIFI, result,
                 true /* showEntitlementUi */, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG);
         verify(mTethering).isTetheringSupported();
         verify(mTethering).requestLatestTetheringEntitlementResult(eq(TETHERING_WIFI),
                 eq(result), eq(true) /* showEntitlementUi */);
     }

     @Test
     public void testRequestLatestTetheringEntitlementResult() throws Exception {
         // Run as no permission.
         final MyResultReceiver result = new MyResultReceiver(null);
         mTetheringConnector.requestLatestTetheringEntitlementResult(TETHERING_WIFI, result,
                 true /* showEntitlementUi */, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG);
         verify(mTethering).isTetherProvisioningRequired();
         result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
         verifyNoMoreInteractions(mTethering);

         runAsTetherPrivileged((none) -> {
             runRequestLatestTetheringEntitlementResult();
             verifyNoMoreInteractionsForTethering();
         });

         runAsWriteSettings((none) -> {
             runRequestLatestTetheringEntitlementResult();
             verify(mTethering).isTetherProvisioningRequired();
             verifyNoMoreInteractionsForTethering();
         });
     }

     private void runRegisterTetheringEventCallback() throws Exception {
         mTetheringConnector.registerTetheringEventCallback(mITetheringEventCallback,
                 TEST_CALLER_PKG);
         verify(mTethering).registerTetheringEventCallback(eq(mITetheringEventCallback));
     }

     @Test
     public void testRegisterTetheringEventCallback() throws Exception {
         runAsNoPermission((result) -> {
             mTetheringConnector.registerTetheringEventCallback(mITetheringEventCallback,
                     TEST_CALLER_PKG);
             verify(mITetheringEventCallback).onCallbackStopped(
                     TETHER_ERROR_NO_ACCESS_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((none) -> {
             runRegisterTetheringEventCallback();
             verifyNoMoreInteractionsForTethering();
         });

         runAsAccessNetworkState((none) -> {
             runRegisterTetheringEventCallback();
             verifyNoMoreInteractionsForTethering();
         });
     }

     private void runUnregisterTetheringEventCallback() throws Exception {
         mTetheringConnector.unregisterTetheringEventCallback(mITetheringEventCallback,
                 TEST_CALLER_PKG);
         verify(mTethering).unregisterTetheringEventCallback(eq(mITetheringEventCallback));
     }

     @Test
     public void testUnregisterTetheringEventCallback() throws Exception {
         runAsNoPermission((result) -> {
             mTetheringConnector.unregisterTetheringEventCallback(mITetheringEventCallback,
                     TEST_CALLER_PKG);
             verify(mITetheringEventCallback).onCallbackStopped(
                     TETHER_ERROR_NO_ACCESS_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((none) -> {
             runUnregisterTetheringEventCallback();
             verifyNoMoreInteractionsForTethering();
         });

         runAsAccessNetworkState((none) -> {
             runUnregisterTetheringEventCallback();
             verifyNoMoreInteractionsForTethering();
         });
     }

     private void runStopAllTethering(final TestTetheringResult result) throws Exception {
         mTetheringConnector.stopAllTethering(TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG, result);
         verify(mTethering).isTetheringSupported();
         verify(mTethering).untetherAll();
         result.assertResult(TETHER_ERROR_NO_ERROR);
     }

     @Test
     public void testStopAllTethering() throws Exception {
         runAsNoPermission((result) -> {
             mTetheringConnector.stopAllTethering(TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG, result);
             verify(mTethering).isTetherProvisioningRequired();
             result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((result) -> {
             runStopAllTethering(result);
             verifyNoMoreInteractionsForTethering();
         });

         runAsWriteSettings((result) -> {
             runStopAllTethering(result);
             verify(mTethering).isTetherProvisioningRequired();
             verifyNoMoreInteractionsForTethering();
         });
     }

     private void runIsTetheringSupported(final TestTetheringResult result) throws Exception {
         mTetheringConnector.isTetheringSupported(TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG, result);
         verify(mTethering).isTetheringSupported();
         result.assertResult(TETHER_ERROR_NO_ERROR);
     }

     @Test
     public void testIsTetheringSupported() throws Exception {
         runAsNoPermission((result) -> {
             mTetheringConnector.isTetheringSupported(TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
                     result);
             verify(mTethering).isTetherProvisioningRequired();
             result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
             verifyNoMoreInteractionsForTethering();
         });

         runAsTetherPrivileged((result) -> {
             runIsTetheringSupported(result);
             verifyNoMoreInteractionsForTethering();
         });

         runAsWriteSettings((result) -> {
             runIsTetheringSupported(result);
             verify(mTethering).isTetherProvisioningRequired();
             verifyNoMoreInteractionsForTethering();
         });
     }
 }
	/*
	* Copyright (C) 2020 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.networkstack.tethering;

	import static android.Manifest.permission.ACCESS_NETWORK_STATE;
	import static android.Manifest.permission.TETHER_PRIVILEGED;
	import static android.Manifest.permission.WRITE_SETTINGS;
	import static android.net.TetheringManager.TETHERING_WIFI;
	import static android.net.TetheringManager.TETHER_ERROR_NO_ACCESS_TETHERING_PERMISSION;
	import static android.net.TetheringManager.TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION;
	import static android.net.TetheringManager.TETHER_ERROR_NO_ERROR;

	import static org.junit.Assert.assertEquals;
	import static org.mockito.ArgumentMatchers.eq;
	import static org.mockito.Mockito.reset;
	import static org.mockito.Mockito.verify;
	import static org.mockito.Mockito.verifyNoMoreInteractions;
	import static org.mockito.Mockito.when;

	import android.app.UiAutomation;
	import android.content.Intent;
	import android.net.IIntResultListener;
	import android.net.ITetheringConnector;
	import android.net.ITetheringEventCallback;
	import android.net.TetheringRequestParcel;
	import android.net.ip.IpServer;
	import android.os.Bundle;
	import android.os.Handler;
	import android.os.ResultReceiver;

	import androidx.test.InstrumentationRegistry;
	import androidx.test.filters.SmallTest;
	import androidx.test.rule.ServiceTestRule;
	import androidx.test.runner.AndroidJUnit4;

	import com.android.networkstack.tethering.MockTetheringService.MockTetheringConnector;

	import org.junit.After;
	import org.junit.Before;
	import org.junit.Rule;
	import org.junit.Test;
	import org.junit.runner.RunWith;
	import org.mockito.Mock;
	import org.mockito.MockitoAnnotations;

	@RunWith(AndroidJUnit4.class)
	@SmallTest
	public final class TetheringServiceTest {
	private static final String TEST_IFACE_NAME = "test_wlan0";
	private static final String TEST_CALLER_PKG = "com.android.shell";
	private static final String TEST_ATTRIBUTION_TAG = null;
	@Mock private ITetheringEventCallback mITetheringEventCallback;
	@Rule public ServiceTestRule mServiceTestRule;
	private Tethering mTethering;
	private Intent mMockServiceIntent;
	private ITetheringConnector mTetheringConnector;
	private UiAutomation mUiAutomation;

	private class TestTetheringResult extends IIntResultListener.Stub {
	private int mResult = -1; // Default value that does not match any result code.
	@Override
	public void onResult(final int resultCode) {
	mResult = resultCode;
	}

	public void assertResult(final int expected) {
	assertEquals(expected, mResult);
	}
	}

	private class MyResultReceiver extends ResultReceiver {
	MyResultReceiver(Handler handler) {
	super(handler);
	}
	private int mResult = -1; // Default value that does not match any result code.
	@Override
	protected void onReceiveResult(int resultCode, Bundle resultData) {
	mResult = resultCode;
	}

	public void assertResult(int expected) {
	assertEquals(expected, mResult);
	}
	}

	@Before
	public void setUp() throws Exception {
	MockitoAnnotations.initMocks(this);
	mUiAutomation =
	InstrumentationRegistry.getInstrumentation().getUiAutomation();
	mServiceTestRule = new ServiceTestRule();
	mMockServiceIntent = new Intent(
	InstrumentationRegistry.getTargetContext(),
	MockTetheringService.class);
	final MockTetheringConnector mockConnector =
	(MockTetheringConnector) mServiceTestRule.bindService(mMockServiceIntent);
	mTetheringConnector = mockConnector.getTetheringConnector();
	final MockTetheringService service = mockConnector.getService();
	mTethering = service.getTethering();
	}

	@After
	public void tearDown() throws Exception {
	mServiceTestRule.unbindService();
	mUiAutomation.dropShellPermissionIdentity();
	}

	private interface TestTetheringCall {
	void runTetheringCall(TestTetheringResult result) throws Exception;
	}

	private void runAsNoPermission(final TestTetheringCall test) throws Exception {
	runTetheringCall(test, new String[0]);
	}

	private void runAsTetherPrivileged(final TestTetheringCall test) throws Exception {
	runTetheringCall(test, TETHER_PRIVILEGED);
	}

	private void runAsAccessNetworkState(final TestTetheringCall test) throws Exception {
	runTetheringCall(test, ACCESS_NETWORK_STATE);
	}

	private void runAsWriteSettings(final TestTetheringCall test) throws Exception {
	runTetheringCall(test, WRITE_SETTINGS);
	}

	private void runTetheringCall(final TestTetheringCall test, String... permissions)
	throws Exception {
	if (permissions.length > 0) mUiAutomation.adoptShellPermissionIdentity(permissions);
	try {
	when(mTethering.isTetheringSupported()).thenReturn(true);
	test.runTetheringCall(new TestTetheringResult());
	} finally {
	mUiAutomation.dropShellPermissionIdentity();
	}
	}

	private void verifyNoMoreInteractionsForTethering() {
	verifyNoMoreInteractions(mTethering);
	verifyNoMoreInteractions(mITetheringEventCallback);
	reset(mTethering, mITetheringEventCallback);
	}

	private void runTether(final TestTetheringResult result) throws Exception {
	mTetheringConnector.tether(TEST_IFACE_NAME, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG, result);
	verify(mTethering).isTetheringSupported();
	verify(mTethering).tether(TEST_IFACE_NAME, IpServer.STATE_TETHERED, result);
	}

	@Test
	public void testTether() throws Exception {
	runAsNoPermission((result) -> {
	mTetheringConnector.tether(TEST_IFACE_NAME, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
	result);
	verify(mTethering).isTetherProvisioningRequired();
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((result) -> {
	runTether(result);
	verifyNoMoreInteractionsForTethering();
	});

	runAsWriteSettings((result) -> {
	runTether(result);
	verify(mTethering).isTetherProvisioningRequired();
	verifyNoMoreInteractionsForTethering();
	});
	}

	private void runUnTether(final TestTetheringResult result) throws Exception {
	mTetheringConnector.untether(TEST_IFACE_NAME, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
	result);
	verify(mTethering).isTetheringSupported();
	verify(mTethering).untether(eq(TEST_IFACE_NAME), eq(result));
	}

	@Test
	public void testUntether() throws Exception {
	runAsNoPermission((result) -> {
	mTetheringConnector.untether(TEST_IFACE_NAME, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
	result);
	verify(mTethering).isTetherProvisioningRequired();
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((result) -> {
	runUnTether(result);
	verifyNoMoreInteractionsForTethering();
	});

	runAsWriteSettings((result) -> {
	runUnTether(result);
	verify(mTethering).isTetherProvisioningRequired();
	verifyNoMoreInteractionsForTethering();
	});
	}

	private void runSetUsbTethering(final TestTetheringResult result) throws Exception {
	when(mTethering.setUsbTethering(true /* enable */)).thenReturn(TETHER_ERROR_NO_ERROR);
	mTetheringConnector.setUsbTethering(true /* enable */, TEST_CALLER_PKG,
	TEST_ATTRIBUTION_TAG, result);
	verify(mTethering).isTetheringSupported();
	verify(mTethering).setUsbTethering(true /* enable */);
	result.assertResult(TETHER_ERROR_NO_ERROR);
	}

	@Test
	public void testSetUsbTethering() throws Exception {
	runAsNoPermission((result) -> {
	mTetheringConnector.setUsbTethering(true /* enable */, TEST_CALLER_PKG,
	TEST_ATTRIBUTION_TAG, result);
	verify(mTethering).isTetherProvisioningRequired();
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((result) -> {
	runSetUsbTethering(result);
	verifyNoMoreInteractionsForTethering();
	});

	runAsWriteSettings((result) -> {
	runSetUsbTethering(result);
	verify(mTethering).isTetherProvisioningRequired();
	verifyNoMoreInteractionsForTethering();
	});

	}

	private void runStartTethering(final TestTetheringResult result,
	final TetheringRequestParcel request) throws Exception {
	mTetheringConnector.startTethering(request, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
	result);
	verify(mTethering).isTetheringSupported();
	verify(mTethering).startTethering(eq(request), eq(result));
	}

	@Test
	public void testStartTethering() throws Exception {
	final TetheringRequestParcel request = new TetheringRequestParcel();
	request.tetheringType = TETHERING_WIFI;

	runAsNoPermission((result) -> {
	mTetheringConnector.startTethering(request, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
	result);
	verify(mTethering).isTetherProvisioningRequired();
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((result) -> {
	runStartTethering(result, request);
	verifyNoMoreInteractionsForTethering();
	});

	runAsWriteSettings((result) -> {
	runStartTethering(result, request);
	verify(mTethering).isTetherProvisioningRequired();
	verifyNoMoreInteractionsForTethering();
	});
	}

	private void runStartTetheringAndVerifyNoPermission(final TestTetheringResult result)
	throws Exception {
	final TetheringRequestParcel request = new TetheringRequestParcel();
	request.tetheringType = TETHERING_WIFI;
	request.exemptFromEntitlementCheck = true;
	mTetheringConnector.startTethering(request, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
	result);
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	}

	@Test
	public void testFailToBypassEntitlementWithoutNeworkStackPermission() throws Exception {
	final TetheringRequestParcel request = new TetheringRequestParcel();
	request.tetheringType = TETHERING_WIFI;
	request.exemptFromEntitlementCheck = true;

	runAsNoPermission((result) -> {
	runStartTetheringAndVerifyNoPermission(result);
	});

	runAsTetherPrivileged((result) -> {
	runStartTetheringAndVerifyNoPermission(result);
	});

	runAsWriteSettings((result) -> {
	runStartTetheringAndVerifyNoPermission(result);
	});
	}

	private void runStopTethering(final TestTetheringResult result) throws Exception {
	mTetheringConnector.stopTethering(TETHERING_WIFI, TEST_CALLER_PKG,
	TEST_ATTRIBUTION_TAG, result);
	verify(mTethering).isTetheringSupported();
	verify(mTethering).stopTethering(TETHERING_WIFI);
	result.assertResult(TETHER_ERROR_NO_ERROR);
	}

	@Test
	public void testStopTethering() throws Exception {
	runAsNoPermission((result) -> {
	mTetheringConnector.stopTethering(TETHERING_WIFI, TEST_CALLER_PKG,
	TEST_ATTRIBUTION_TAG, result);
	verify(mTethering).isTetherProvisioningRequired();
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((result) -> {
	runStopTethering(result);
	verifyNoMoreInteractionsForTethering();
	});

	runAsWriteSettings((result) -> {
	runStopTethering(result);
	verify(mTethering).isTetherProvisioningRequired();
	verifyNoMoreInteractionsForTethering();
	});
	}

	private void runRequestLatestTetheringEntitlementResult() throws Exception {
	final MyResultReceiver result = new MyResultReceiver(null);
	mTetheringConnector.requestLatestTetheringEntitlementResult(TETHERING_WIFI, result,
	true /* showEntitlementUi */, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG);
	verify(mTethering).isTetheringSupported();
	verify(mTethering).requestLatestTetheringEntitlementResult(eq(TETHERING_WIFI),
	eq(result), eq(true) /* showEntitlementUi */);
	}

	@Test
	public void testRequestLatestTetheringEntitlementResult() throws Exception {
	// Run as no permission.
	final MyResultReceiver result = new MyResultReceiver(null);
	mTetheringConnector.requestLatestTetheringEntitlementResult(TETHERING_WIFI, result,
	true /* showEntitlementUi */, TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG);
	verify(mTethering).isTetherProvisioningRequired();
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractions(mTethering);

	runAsTetherPrivileged((none) -> {
	runRequestLatestTetheringEntitlementResult();
	verifyNoMoreInteractionsForTethering();
	});

	runAsWriteSettings((none) -> {
	runRequestLatestTetheringEntitlementResult();
	verify(mTethering).isTetherProvisioningRequired();
	verifyNoMoreInteractionsForTethering();
	});
	}

	private void runRegisterTetheringEventCallback() throws Exception {
	mTetheringConnector.registerTetheringEventCallback(mITetheringEventCallback,
	TEST_CALLER_PKG);
	verify(mTethering).registerTetheringEventCallback(eq(mITetheringEventCallback));
	}

	@Test
	public void testRegisterTetheringEventCallback() throws Exception {
	runAsNoPermission((result) -> {
	mTetheringConnector.registerTetheringEventCallback(mITetheringEventCallback,
	TEST_CALLER_PKG);
	verify(mITetheringEventCallback).onCallbackStopped(
	TETHER_ERROR_NO_ACCESS_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((none) -> {
	runRegisterTetheringEventCallback();
	verifyNoMoreInteractionsForTethering();
	});

	runAsAccessNetworkState((none) -> {
	runRegisterTetheringEventCallback();
	verifyNoMoreInteractionsForTethering();
	});
	}

	private void runUnregisterTetheringEventCallback() throws Exception {
	mTetheringConnector.unregisterTetheringEventCallback(mITetheringEventCallback,
	TEST_CALLER_PKG);
	verify(mTethering).unregisterTetheringEventCallback(eq(mITetheringEventCallback));
	}

	@Test
	public void testUnregisterTetheringEventCallback() throws Exception {
	runAsNoPermission((result) -> {
	mTetheringConnector.unregisterTetheringEventCallback(mITetheringEventCallback,
	TEST_CALLER_PKG);
	verify(mITetheringEventCallback).onCallbackStopped(
	TETHER_ERROR_NO_ACCESS_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((none) -> {
	runUnregisterTetheringEventCallback();
	verifyNoMoreInteractionsForTethering();
	});

	runAsAccessNetworkState((none) -> {
	runUnregisterTetheringEventCallback();
	verifyNoMoreInteractionsForTethering();
	});
	}

	private void runStopAllTethering(final TestTetheringResult result) throws Exception {
	mTetheringConnector.stopAllTethering(TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG, result);
	verify(mTethering).isTetheringSupported();
	verify(mTethering).untetherAll();
	result.assertResult(TETHER_ERROR_NO_ERROR);
	}

	@Test
	public void testStopAllTethering() throws Exception {
	runAsNoPermission((result) -> {
	mTetheringConnector.stopAllTethering(TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG, result);
	verify(mTethering).isTetherProvisioningRequired();
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((result) -> {
	runStopAllTethering(result);
	verifyNoMoreInteractionsForTethering();
	});

	runAsWriteSettings((result) -> {
	runStopAllTethering(result);
	verify(mTethering).isTetherProvisioningRequired();
	verifyNoMoreInteractionsForTethering();
	});
	}

	private void runIsTetheringSupported(final TestTetheringResult result) throws Exception {
	mTetheringConnector.isTetheringSupported(TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG, result);
	verify(mTethering).isTetheringSupported();
	result.assertResult(TETHER_ERROR_NO_ERROR);
	}

	@Test
	public void testIsTetheringSupported() throws Exception {
	runAsNoPermission((result) -> {
	mTetheringConnector.isTetheringSupported(TEST_CALLER_PKG, TEST_ATTRIBUTION_TAG,
	result);
	verify(mTethering).isTetherProvisioningRequired();
	result.assertResult(TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION);
	verifyNoMoreInteractionsForTethering();
	});

	runAsTetherPrivileged((result) -> {
	runIsTetheringSupported(result);
	verifyNoMoreInteractionsForTethering();
	});

	runAsWriteSettings((result) -> {
	runIsTetheringSupported(result);
	verify(mTethering).isTetherProvisioningRequired();
	verifyNoMoreInteractionsForTethering();
	});
	}
	}