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/IPackageManagerWrapper.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2017 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.content.Intent;
+import android.content.pm.IPackageManager;
+import android.content.pm.PackageInfo;
+import android.content.pm.ParceledListSlice;
+import android.content.pm.ResolveInfo;
+import android.os.RemoteException;
+
+/**
+ * This class replicates a subset of the android.content.pm.IPackageManager (PMS). The class
+ * exists so that we can use a thin wrapper around the PMS in production code and a mock in tests.
+ * We cannot directly mock or shadow the PMS, because some of the methods we rely on are newer than
+ * the API version supported by Robolectric.
+ */
+public class IPackageManagerWrapper {
+
+    private final IPackageManager mPms;
+
+    public IPackageManagerWrapper(IPackageManager pms) {
+        mPms = pms;
+    }
+
+    /**
+     * Calls {@code IPackageManager.checkUidPermission()}.
+     *
+     * @see android.content.pm.IPackageManager#checkUidPermission
+     */
+    public int checkUidPermission(String permName, int uid) throws RemoteException {
+        return mPms.checkUidPermission(permName, uid);
+    }
+
+    /**
+     * Calls {@code IPackageManager.findPersistentPreferredActivity()}.
+     *
+     * @see android.content.pm.IPackageManager#findPersistentPreferredActivity
+     */
+    public ResolveInfo findPersistentPreferredActivity(Intent intent, int userId)
+            throws RemoteException {
+        return mPms.findPersistentPreferredActivity(intent, userId);
+    }
+
+    /**
+     * Calls {@code IPackageManager.getPackageInfo()}.
+     *
+     * @see android.content.pm.IPackageManager#getPackageInfo
+     */
+    public PackageInfo getPackageInfo(String packageName, int flags, int userId)
+            throws RemoteException {
+        return mPms.getPackageInfo(packageName, flags, userId);
+    }
+
+    /**
+     * Calls {@code IPackageManager.getAppOpPermissionPackages()}.
+     *
+     * @see android.content.pm.IPackageManager#getAppOpPermissionPackages
+     */
+    public String[] getAppOpPermissionPackages(String permissionName) throws RemoteException {
+        return mPms.getAppOpPermissionPackages(permissionName);
+    }
+
+    /**
+     * Calls {@code IPackageManager.isPackageAvailable()}.
+     *
+     * @see android.content.pm.IPackageManager#isPackageAvailable
+     */
+    public boolean isPackageAvailable(String packageName, int userId) throws RemoteException {
+        return mPms.isPackageAvailable(packageName, userId);
+    }
+
+    /**
+     * Calls {@code IPackageManager.getPackagesHoldingPermissions()}.
+     *
+     * @see android.content.pm.IPackageManager#getPackagesHoldingPermissions
+     */
+    public ParceledListSlice<PackageInfo> getPackagesHoldingPermissions(
+        String[] permissions, int flags, int userId) throws RemoteException {
+        return mPms.getPackagesHoldingPermissions(permissions, flags, userId);
+    }
+
+}