Merge changes from topics "RefactorIR", "appExclusionPrefix", "reStartVpnProfile"

* changes:
  Refactor to mock package add and remove event
  Test reconnect VpnManager VPN with always on enabled
  Update the prefix of VPN_APP_EXCLUDED in the test
  Add tests to verify getProvisionedVpnProfileState
diff --git a/tests/unit/java/com/android/server/VpnManagerServiceTest.java b/tests/unit/java/com/android/server/VpnManagerServiceTest.java
index ece13b3..164f825 100644
--- a/tests/unit/java/com/android/server/VpnManagerServiceTest.java
+++ b/tests/unit/java/com/android/server/VpnManagerServiceTest.java
@@ -24,7 +24,6 @@
 
 import static org.junit.Assert.assertNotNull;
 import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.never;
@@ -32,15 +31,18 @@
 import static org.mockito.Mockito.verify;
 
 import android.annotation.UserIdInt;
+import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.net.ConnectivityManager;
 import android.net.INetd;
+import android.net.Uri;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.INetworkManagementService;
 import android.os.Looper;
+import android.os.UserHandle;
 import android.os.UserManager;
 
 import androidx.test.filters.SmallTest;
@@ -48,14 +50,15 @@
 import com.android.server.connectivity.Vpn;
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRunner;
+import com.android.testutils.HandlerUtils;
 
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.mockito.Spy;
 
 @RunWith(DevSdkIgnoreRunner.class)
 @IgnoreUpTo(R) // VpnManagerService is not available before R
@@ -64,18 +67,23 @@
     @Rule
     public final DevSdkIgnoreRule mIgnoreRule = new DevSdkIgnoreRule();
 
-    @Spy Context mContext;
+    private static final int TIMEOUT_MS = 2_000;
+
+    @Mock Context mContext;
+    @Mock Context mSystemContext;
+    @Mock Context mUserAllContext;
     private HandlerThread mHandlerThread;
-    @Mock private Handler mHandler;
     @Mock private Vpn mVpn;
     @Mock private INetworkManagementService mNms;
     @Mock private ConnectivityManager mCm;
     @Mock private UserManager mUserManager;
     @Mock private INetd mNetd;
     @Mock private PackageManager mPackageManager;
+
     private VpnManagerServiceDependencies mDeps;
     private VpnManagerService mService;
-
+    private BroadcastReceiver mUserPresentReceiver;
+    private BroadcastReceiver mIntentReceiver;
     private final String mNotMyVpnPkg = "com.not.my.vpn";
 
     class VpnManagerServiceDependencies extends VpnManagerService.Dependencies {
@@ -107,46 +115,54 @@
 
         mHandlerThread = new HandlerThread("TestVpnManagerService");
         mDeps = new VpnManagerServiceDependencies();
-        doReturn(mContext).when(mContext).createContextAsUser(any(), anyInt());
+        doReturn(mUserAllContext).when(mContext).createContextAsUser(UserHandle.ALL, 0);
+        doReturn(mSystemContext).when(mContext).createContextAsUser(UserHandle.SYSTEM, 0);
         doReturn(mPackageManager).when(mContext).getPackageManager();
         setMockedPackages(mPackageManager, sPackages);
 
         mockService(mContext, ConnectivityManager.class, Context.CONNECTIVITY_SERVICE, mCm);
         mockService(mContext, UserManager.class, Context.USER_SERVICE, mUserManager);
-
-        doReturn(new Intent()).when(mContext).registerReceiver(
-                any() /* receiver */,
-                any() /* intentFilter */,
-                any() /* broadcastPermission */,
-                eq(mHandler) /* scheduler */);
         doReturn(SYSTEM_USER).when(mUserManager).getUserInfo(eq(SYSTEM_USER_ID));
+
         mService = new VpnManagerService(mContext, mDeps);
+        mService.systemReady();
+
+        final ArgumentCaptor<BroadcastReceiver> intentReceiverCaptor =
+                ArgumentCaptor.forClass(BroadcastReceiver.class);
+        final ArgumentCaptor<BroadcastReceiver> userPresentReceiverCaptor =
+                ArgumentCaptor.forClass(BroadcastReceiver.class);
+        verify(mSystemContext).registerReceiver(
+                userPresentReceiverCaptor.capture(), any(), any(), any());
+        verify(mUserAllContext, times(2)).registerReceiver(
+                intentReceiverCaptor.capture(), any(), any(), any());
+        mUserPresentReceiver = userPresentReceiverCaptor.getValue();
+        mIntentReceiver = intentReceiverCaptor.getValue();
+
+        // Add user to create vpn in mVpn
+        onUserStarted(SYSTEM_USER_ID);
+        assertNotNull(mService.mVpns.get(SYSTEM_USER_ID));
     }
 
     @Test
     public void testUpdateAppExclusionList() {
-        // Add user to create vpn in mVpn
-        mService.onUserStarted(SYSTEM_USER_ID);
-        assertNotNull(mService.mVpns.get(SYSTEM_USER_ID));
-
         // Start vpn
         mService.startVpnProfile(TEST_VPN_PKG);
         verify(mVpn).startVpnProfile(eq(TEST_VPN_PKG));
 
         // Remove package due to package replaced.
-        mService.onPackageRemoved(PKGS[0], PKG_UIDS[0], true /* isReplacing */);
+        onPackageRemoved(PKGS[0], PKG_UIDS[0], true /* isReplacing */);
         verify(mVpn, never()).refreshPlatformVpnAppExclusionList();
 
         // Add package due to package replaced.
-        mService.onPackageAdded(PKGS[0], PKG_UIDS[0], true /* isReplacing */);
+        onPackageAdded(PKGS[0], PKG_UIDS[0], true /* isReplacing */);
         verify(mVpn, never()).refreshPlatformVpnAppExclusionList();
 
         // Remove package
-        mService.onPackageRemoved(PKGS[0], PKG_UIDS[0], false /* isReplacing */);
+        onPackageRemoved(PKGS[0], PKG_UIDS[0], false /* isReplacing */);
         verify(mVpn).refreshPlatformVpnAppExclusionList();
 
         // Add the package back
-        mService.onPackageAdded(PKGS[0], PKG_UIDS[0], false /* isReplacing */);
+        onPackageAdded(PKGS[0], PKG_UIDS[0], false /* isReplacing */);
         verify(mVpn, times(2)).refreshPlatformVpnAppExclusionList();
     }
 
@@ -160,4 +176,59 @@
     public void testStopVpnProfileFromDiffPackage() {
         assertThrows(SecurityException.class, () -> mService.stopVpnProfile(mNotMyVpnPkg));
     }
+
+    @Test
+    public void testGetProvisionedVpnProfileStateFromDiffPackage() {
+        assertThrows(SecurityException.class, () ->
+                mService.getProvisionedVpnProfileState(mNotMyVpnPkg));
+    }
+
+    @Test
+    public void testGetProvisionedVpnProfileState() {
+        mService.getProvisionedVpnProfileState(TEST_VPN_PKG);
+        verify(mVpn).getProvisionedVpnProfileState(TEST_VPN_PKG);
+    }
+
+    private Intent buildIntent(String action, String packageName, int userId, int uid,
+            boolean isReplacing) {
+        final Intent intent = new Intent(action);
+        intent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
+        intent.putExtra(Intent.EXTRA_UID, uid);
+        intent.putExtra(Intent.EXTRA_REPLACING, isReplacing);
+        if (packageName != null) {
+            intent.setData(Uri.fromParts("package" /* scheme */, packageName, null /* fragment */));
+        }
+
+        return intent;
+    }
+
+    private void sendIntent(Intent intent) {
+        final Handler h = mHandlerThread.getThreadHandler();
+
+        // Send in handler thread.
+        h.post(() -> mIntentReceiver.onReceive(mContext, intent));
+        HandlerUtils.waitForIdle(mHandlerThread, TIMEOUT_MS);
+    }
+
+    private void onUserStarted(int userId) {
+        sendIntent(buildIntent(Intent.ACTION_USER_STARTED,
+                null /* packageName */, userId, -1 /* uid */, false /* isReplacing */));
+    }
+
+    private void onPackageAdded(String packageName, int userId, int uid, boolean isReplacing) {
+        sendIntent(buildIntent(Intent.ACTION_PACKAGE_ADDED, packageName, userId, uid, isReplacing));
+    }
+
+    private void onPackageAdded(String packageName, int uid, boolean isReplacing) {
+        onPackageAdded(packageName, UserHandle.USER_SYSTEM, uid, isReplacing);
+    }
+
+    private void onPackageRemoved(String packageName, int userId, int uid, boolean isReplacing) {
+        sendIntent(buildIntent(Intent.ACTION_PACKAGE_REMOVED, packageName, userId, uid,
+                isReplacing));
+    }
+
+    private void onPackageRemoved(String packageName, int uid, boolean isReplacing) {
+        onPackageRemoved(packageName, UserHandle.USER_SYSTEM, uid, isReplacing);
+    }
 }
diff --git a/tests/unit/java/com/android/server/connectivity/VpnTest.java b/tests/unit/java/com/android/server/connectivity/VpnTest.java
index 0891ee3..5c1992d 100644
--- a/tests/unit/java/com/android/server/connectivity/VpnTest.java
+++ b/tests/unit/java/com/android/server/connectivity/VpnTest.java
@@ -232,7 +232,7 @@
     private static final int TEST_TUNNEL_RESOURCE_ID = 0x2345;
     private static final long TEST_TIMEOUT_MS = 500L;
     private static final String PRIMARY_USER_APP_EXCLUDE_KEY =
-            "VPN_APP_EXCLUDED_27_com.testvpn.vpn";
+            "VPNAPPEXCLUDED_27_com.testvpn.vpn";
     static final String PKGS_BYTES = getPackageByteString(List.of(PKGS));
     private static final Range<Integer> PRIMARY_USER_RANGE = uidRangeForUser(PRIMARY_USER.id);
 
@@ -1360,6 +1360,31 @@
     }
 
     @Test
+    public void testReconnectVpnManagerVpnWithAlwaysOnEnabled() throws Exception {
+        final Vpn vpn = createVpnAndSetupUidChecks(AppOpsManager.OPSTR_ACTIVATE_PLATFORM_VPN);
+        when(mVpnProfileStore.get(vpn.getProfileNameForPackage(TEST_VPN_PKG)))
+                .thenReturn(mVpnProfile.encode());
+        vpn.startVpnProfile(TEST_VPN_PKG);
+        verifyPlatformVpnIsActivated(TEST_VPN_PKG);
+
+        // Enable VPN always-on for TEST_VPN_PKG.
+        assertTrue(vpn.setAlwaysOnPackage(TEST_VPN_PKG, false /* lockdown */,
+                null /* lockdownAllowlist */));
+
+        // Reset to verify next startVpnProfile.
+        reset(mAppOps);
+
+        vpn.stopVpnProfile(TEST_VPN_PKG);
+
+        // Reconnect the vpn with different package will cause exception.
+        assertThrows(SecurityException.class, () -> vpn.startVpnProfile(PKGS[0]));
+
+        // Reconnect the vpn again with the vpn always on package w/o exception.
+        vpn.startVpnProfile(TEST_VPN_PKG);
+        verifyPlatformVpnIsActivated(TEST_VPN_PKG);
+    }
+
+    @Test
     public void testSetPackageAuthorizationVpnService() throws Exception {
         final Vpn vpn = createVpnAndSetupUidChecks();