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/AutofillManagerWrapper.java

@@ -0,0 +1,59 @@
+/*
+ * 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.view.autofill.AutofillManager;
+
+/**
+ * This class replicates a subset of the android.view.autofill.AutofillManager (AFM). The
+ * class exists so that we can use a thin wrapper around the AFM in production code and a mock
+ * in tests. We cannot directly mock or shadow the AFM, because some of the methods we rely on are
+ * newer than the API version supported by Robolectric.
+ */
+public class AutofillManagerWrapper {
+    private final AutofillManager mAfm;
+
+    public AutofillManagerWrapper(AutofillManager afm) {
+        mAfm = afm;
+    }
+
+    /**
+     * Calls {@code AutofillManager.hasAutofillFeature()}.
+     *
+     * @see AutofillManager#hasAutofillFeature
+     */
+    public boolean hasAutofillFeature() {
+        if (mAfm == null) {
+            return false;
+        }
+
+        return mAfm.hasAutofillFeature();
+    }
+
+    /**
+     * Calls {@code AutofillManager.isAutofillSupported()}.
+     *
+     * @see AutofillManager#isAutofillSupported
+     */
+    public boolean isAutofillSupported() {
+        if (mAfm == null) {
+            return false;
+        }
+
+        return mAfm.isAutofillSupported();
+    }
+}