Revert^2 "Try to ensure tests run sequentially"

c0dd229fc6afb78c18b6688f7b5034f6229b222d

Change-Id: I1d9366f0cbe4fb41cedfed987162ec15e7845530

10 files changed, 106 insertions, 17 deletions

diff --git a/core/java/android/hardware/biometrics/BiometricManager.java b/core/java/android/hardware/biometrics/BiometricManager.java
index 4ca31050bd52..5b28e0035b09 100644
--- a/core/java/android/hardware/biometrics/BiometricManager.java
+++ b/core/java/android/hardware/biometrics/BiometricManager.java
@@ -237,7 +237,8 @@ public class BiometricManager {
     public BiometricTestSession createTestSession(int sensorId) {
         try {
             return new BiometricTestSession(mContext, sensorId,
-                    mService.createTestSession(sensorId, mContext.getOpPackageName()));
+                    (context, sensorId1, callback) -> mService
+                            .createTestSession(sensorId1, callback, context.getOpPackageName()));
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
diff --git a/core/java/android/hardware/biometrics/BiometricTestSession.java b/core/java/android/hardware/biometrics/BiometricTestSession.java
index 1c3560882f1b..ff1a17e07c11 100644
--- a/core/java/android/hardware/biometrics/BiometricTestSession.java
+++ b/core/java/android/hardware/biometrics/BiometricTestSession.java
@@ -19,6 +19,7 @@ package android.hardware.biometrics;
 import static android.Manifest.permission.TEST_BIOMETRIC;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
 import android.annotation.TestApi;
 import android.content.Context;
@@ -27,6 +28,9 @@ import android.os.RemoteException;
 import android.util.ArraySet;
 import android.util.Log;
 
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
 /**
  * Common set of interfaces to test biometric-related APIs, including {@link BiometricPrompt} and
  * {@link android.hardware.fingerprint.FingerprintManager}.
@@ -36,22 +40,58 @@ import android.util.Log;
 public class BiometricTestSession implements AutoCloseable {
     private static final String TAG = "BiometricTestSession";
 
+    /**
+     * @hide
+     */
+    public interface TestSessionProvider {
+        @NonNull
+        ITestSession createTestSession(@NonNull Context context, int sensorId,
+                @NonNull ITestSessionCallback callback) throws RemoteException;
+    }
+
     private final Context mContext;
     private final int mSensorId;
     private final ITestSession mTestSession;
 
     // Keep track of users that were tested, which need to be cleaned up when finishing.
-    private final ArraySet<Integer> mTestedUsers;
+    @NonNull private final ArraySet<Integer> mTestedUsers;
+
+    // Track the users currently cleaning up, and provide a latch that gets notified when all
+    // users have finished cleaning up. This is an imperfect system, as there can technically be
+    // multiple cleanups per user. Theoretically we should track the cleanup's BaseClientMonitor's
+    // unique ID, but it's complicated to plumb it through. This should be fine for now.
+    @Nullable private CountDownLatch mCloseLatch;
+    @NonNull private final ArraySet<Integer> mUsersCleaningUp;
+
+    private final ITestSessionCallback mCallback = new ITestSessionCallback.Stub() {
+        @Override
+        public void onCleanupStarted(int userId) {
+            Log.d(TAG, "onCleanupStarted, sensor: " + mSensorId + ", userId: " + userId);
+        }
+
+        @Override
+        public void onCleanupFinished(int userId) {
+            Log.d(TAG, "onCleanupFinished, sensor: " + mSensorId
+                    + ", userId: " + userId
+                    + ", remaining users: " + mUsersCleaningUp.size());
+            mUsersCleaningUp.remove(userId);
+
+            if (mUsersCleaningUp.isEmpty() && mCloseLatch != null) {
+                mCloseLatch.countDown();
+            }
+        }
+    };
 
     /**
      * @hide
      */
     public BiometricTestSession(@NonNull Context context, int sensorId,
-            @NonNull ITestSession testSession) {
+            @NonNull TestSessionProvider testSessionProvider) throws RemoteException {
         mContext = context;
         mSensorId = sensorId;
-        mTestSession = testSession;
+        mTestSession = testSessionProvider.createTestSession(context, sensorId, mCallback);
         mTestedUsers = new ArraySet<>();
+        mUsersCleaningUp = new ArraySet<>();
         setTestHalEnabled(true);
     }
 
@@ -176,6 +216,11 @@ public class BiometricTestSession implements AutoCloseable {
     @RequiresPermission(TEST_BIOMETRIC)
     public void cleanupInternalState(int userId) {
         try {
+            if (mUsersCleaningUp.contains(userId)) {
+                Log.w(TAG, "Cleanup already in progress for user: " + userId);
+            }
+
+            mUsersCleaningUp.add(userId);
             mTestSession.cleanupInternalState(userId);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
@@ -185,12 +230,24 @@ public class BiometricTestSession implements AutoCloseable {
     @Override
     @RequiresPermission(TEST_BIOMETRIC)
     public void close() {
-        // Disable the test HAL first, so that enumerate is run on the real HAL, which should have
-        // no enrollments. Test-only framework enrollments will be deleted.
-        setTestHalEnabled(false);
-
-        for (int user : mTestedUsers) {
-            cleanupInternalState(user);
+        // Cleanup can be performed using the test HAL, since it always responds to enumerate with
+        // zero enrollments.
+        if (!mTestedUsers.isEmpty()) {
+            mCloseLatch = new CountDownLatch(1);
+            for (int user : mTestedUsers) {
+                cleanupInternalState(user);
+            }
+
+            try {
+                Log.d(TAG, "Awaiting latch...");
+                mCloseLatch.await(10, TimeUnit.SECONDS);
+                Log.d(TAG, "Finished awaiting");
+            } catch (InterruptedException e) {
+                Log.e(TAG, "Latch interrupted", e);
+            }
         }
+
+        // Disable the test HAL after the sensor becomes idle.
+        setTestHalEnabled(false);
     }
 }
diff --git a/core/java/android/hardware/biometrics/IAuthService.aidl b/core/java/android/hardware/biometrics/IAuthService.aidl
index 0dfd5dbf300e..d8c9dbc849a9 100644
--- a/core/java/android/hardware/biometrics/IAuthService.aidl
+++ b/core/java/android/hardware/biometrics/IAuthService.aidl
@@ -20,6 +20,7 @@ import android.hardware.biometrics.IBiometricEnabledOnKeyguardCallback;
 import android.hardware.biometrics.IBiometricServiceReceiver;
 import android.hardware.biometrics.IInvalidationCallback;
 import android.hardware.biometrics.ITestSession;
+import android.hardware.biometrics.ITestSessionCallback;
 import android.hardware.biometrics.PromptInfo;
 import android.hardware.biometrics.SensorPropertiesInternal;
 
@@ -32,7 +33,7 @@ import android.hardware.biometrics.SensorPropertiesInternal;
  */
 interface IAuthService {
     // Creates a test session with the specified sensorId
-    ITestSession createTestSession(int sensorId, String opPackageName);
+    ITestSession createTestSession(int sensorId, ITestSessionCallback callback, String opPackageName);
 
     // Retrieve static sensor properties for all biometric sensors
     List<SensorPropertiesInternal> getSensorProperties(String opPackageName);
diff --git a/core/java/android/hardware/biometrics/IBiometricAuthenticator.aidl b/core/java/android/hardware/biometrics/IBiometricAuthenticator.aidl
index c854ac9847d8..7639c5dd4d16 100644
--- a/core/java/android/hardware/biometrics/IBiometricAuthenticator.aidl
+++ b/core/java/android/hardware/biometrics/IBiometricAuthenticator.aidl
@@ -20,6 +20,7 @@ import android.hardware.biometrics.IBiometricSensorReceiver;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.hardware.biometrics.IInvalidationCallback;
 import android.hardware.biometrics.ITestSession;
+import android.hardware.biometrics.ITestSessionCallback;
 import android.hardware.biometrics.SensorPropertiesInternal;
 import android.hardware.face.IFaceServiceReceiver;
 import android.hardware.face.Face;
@@ -32,7 +33,7 @@ import android.hardware.face.Face;
 interface IBiometricAuthenticator {
 
     // Creates a test session
-    ITestSession createTestSession(String opPackageName);
+    ITestSession createTestSession(ITestSessionCallback callback, String opPackageName);
 
     // Retrieve static sensor properties
     SensorPropertiesInternal getSensorProperties(String opPackageName);
diff --git a/core/java/android/hardware/biometrics/IBiometricService.aidl b/core/java/android/hardware/biometrics/IBiometricService.aidl
index a14a910a9e50..24331863a05f 100644
--- a/core/java/android/hardware/biometrics/IBiometricService.aidl
+++ b/core/java/android/hardware/biometrics/IBiometricService.aidl
@@ -21,6 +21,7 @@ import android.hardware.biometrics.IBiometricServiceReceiver;
 import android.hardware.biometrics.IBiometricAuthenticator;
 import android.hardware.biometrics.IInvalidationCallback;
 import android.hardware.biometrics.ITestSession;
+import android.hardware.biometrics.ITestSessionCallback;
 import android.hardware.biometrics.PromptInfo;
 import android.hardware.biometrics.SensorPropertiesInternal;
 
@@ -30,7 +31,7 @@ import android.hardware.biometrics.SensorPropertiesInternal;
  */
 interface IBiometricService {
     // Creates a test session with the specified sensorId
-    ITestSession createTestSession(int sensorId, String opPackageName);
+    ITestSession createTestSession(int sensorId, ITestSessionCallback callback, String opPackageName);
 
     // Retrieve static sensor properties for all biometric sensors
     List<SensorPropertiesInternal> getSensorProperties(String opPackageName);
diff --git a/core/java/android/hardware/biometrics/ITestSession.aidl b/core/java/android/hardware/biometrics/ITestSession.aidl
index fa7a62c53531..f8395a119c0b 100644
--- a/core/java/android/hardware/biometrics/ITestSession.aidl
+++ b/core/java/android/hardware/biometrics/ITestSession.aidl
@@ -18,7 +18,7 @@ package android.hardware.biometrics;
 import android.hardware.biometrics.SensorPropertiesInternal;
 
 /**
- * A test service for FingerprintManager and BiometricPrompt.
+ * A test service for FingerprintManager and BiometricManager.
  * @hide
  */
 interface ITestSession {
diff --git a/core/java/android/hardware/biometrics/ITestSessionCallback.aidl b/core/java/android/hardware/biometrics/ITestSessionCallback.aidl
new file mode 100644
index 000000000000..3d9517f29548
--- /dev/null
+++ b/core/java/android/hardware/biometrics/ITestSessionCallback.aidl
@@ -0,0 +1,25 @@
+/*
+ * 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 android.hardware.biometrics;
+
+/**
+ * ITestSession callback for FingerprintManager and BiometricManager.
+ * @hide
+ */
+interface ITestSessionCallback {
+    void onCleanupStarted(int userId);
+    void onCleanupFinished(int userId);
+}
diff --git a/core/java/android/hardware/face/IFaceService.aidl b/core/java/android/hardware/face/IFaceService.aidl
index a2e0b3b1cb41..6e7c701ef5ff 100644
--- a/core/java/android/hardware/face/IFaceService.aidl
+++ b/core/java/android/hardware/face/IFaceService.aidl
@@ -19,6 +19,7 @@ import android.hardware.biometrics.IBiometricSensorReceiver;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.hardware.biometrics.IInvalidationCallback;
 import android.hardware.biometrics.ITestSession;
+import android.hardware.biometrics.ITestSessionCallback;
 import android.hardware.face.IFaceServiceReceiver;
 import android.hardware.face.Face;
 import android.hardware.face.FaceSensorPropertiesInternal;
@@ -32,7 +33,7 @@ import android.view.Surface;
 interface IFaceService {
 
     // Creates a test session with the specified sensorId
-    ITestSession createTestSession(int sensorId, String opPackageName);
+    ITestSession createTestSession(int sensorId, ITestSessionCallback callback, String opPackageName);
 
     // Requests a proto dump of the specified sensor
     byte[] dumpSensorServiceStateProto(int sensorId, boolean clearSchedulerBuffer);
diff --git a/core/java/android/hardware/fingerprint/FingerprintManager.java b/core/java/android/hardware/fingerprint/FingerprintManager.java
index 2e4063b6dec1..fc795d8a0488 100644
--- a/core/java/android/hardware/fingerprint/FingerprintManager.java
+++ b/core/java/android/hardware/fingerprint/FingerprintManager.java
@@ -168,7 +168,8 @@ public class FingerprintManager implements BiometricAuthenticator, BiometricFing
     public BiometricTestSession createTestSession(int sensorId) {
         try {
             return new BiometricTestSession(mContext, sensorId,
-                    mService.createTestSession(sensorId, mContext.getOpPackageName()));
+                    (context, sensorId1, callback) -> mService
+                            .createTestSession(sensorId1, callback, context.getOpPackageName()));
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
diff --git a/core/java/android/hardware/fingerprint/IFingerprintService.aidl b/core/java/android/hardware/fingerprint/IFingerprintService.aidl
index 1694fef0f71b..054c0d0f6513 100644
--- a/core/java/android/hardware/fingerprint/IFingerprintService.aidl
+++ b/core/java/android/hardware/fingerprint/IFingerprintService.aidl
@@ -19,6 +19,7 @@ import android.hardware.biometrics.IBiometricSensorReceiver;
 import android.hardware.biometrics.IBiometricServiceLockoutResetCallback;
 import android.hardware.biometrics.IInvalidationCallback;
 import android.hardware.biometrics.ITestSession;
+import android.hardware.biometrics.ITestSessionCallback;
 import android.hardware.fingerprint.IFingerprintClientActiveCallback;
 import android.hardware.fingerprint.IFingerprintServiceReceiver;
 import android.hardware.fingerprint.IUdfpsOverlayController;
@@ -33,7 +34,7 @@ import java.util.List;
 interface IFingerprintService {
 
     // Creates a test session with the specified sensorId
-    ITestSession createTestSession(int sensorId, String opPackageName);
+    ITestSession createTestSession(int sensorId, ITestSessionCallback callback, String opPackageName);
 
     // Requests a proto dump of the specified sensor
     byte[] dumpSensorServiceStateProto(int sensorId, boolean clearSchedulerBuffer);