Consolidate all wrappers used for testing.

- Add the wrapper package and move all wrappers to the wrapper package.
- Get rid of some wrapper interface/impl implementation and have a
wrapper class directly.

Bug: 65634579
Test: make RunSettingsRoboTests
Change-Id: Ic757d8f7bacfa7a034c7e692205bc1dc4b0e1de1

src/com/android/settings/wrapper/FingerprintManagerWrapper.java

@@ -0,0 +1,66 @@
+/*
+ * 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.settings.wrapper;
+
+import android.annotation.NonNull;
+import android.hardware.fingerprint.FingerprintManager;
+import android.hardware.fingerprint.FingerprintManager.EnrollmentCallback;
+import android.os.CancellationSignal;
+
+import com.android.internal.util.Preconditions;
+
+/**
+ * Wrapper of {@link FingerprintManager}. Workaround for robolectic testing.
+ *
+ * This is the workaround to allow us test {@link SetNewPasswordController} which uses a new hidden
+ * API {@link android.hardware.fingerprint.FingerprintManager#hasEnrolledFingerprints(int)} that
+ * robolectric does not support yet. Having robolectic to support latest platform API is tracked
+ * in b/30995831.
+ */
+public class FingerprintManagerWrapper {
+    private @NonNull FingerprintManager mFingerprintManager;
+
+    public FingerprintManagerWrapper(@NonNull FingerprintManager fingerprintManager) {
+        Preconditions.checkNotNull(fingerprintManager);
+        mFingerprintManager = fingerprintManager;
+    }
+
+    public boolean isHardwareDetected() {
+        return mFingerprintManager.isHardwareDetected();
+    }
+
+    public boolean hasEnrolledFingerprints(int userId) {
+        return mFingerprintManager.hasEnrolledFingerprints(userId);
+    }
+
+    public long preEnroll() {
+        return mFingerprintManager.preEnroll();
+    }
+
+    public void setActiveUser(int userId) {
+        mFingerprintManager.setActiveUser(userId);
+    }
+
+    public void enroll(
+            byte[] token,
+            CancellationSignal cancel,
+            int flags,
+            int userId,
+            EnrollmentCallback callback) {
+        mFingerprintManager.enroll(token, cancel, flags, userId, callback);
+    }
+}