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/KeyValueListParserWrapper.java

@@ -0,0 +1,75 @@
+/*
+ * 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.util.KeyValueListParser;
+
+/**
+ * This class replicates a subset of the {@link KeyValueListParser}. The class
+ * exists so that we can use a thin wrapper around the PM in production code and a mock in tests.
+ * We cannot directly mock or shadow the {@link KeyValueListParser}, because some of the methods
+ * we rely on are newer than the API version supported by Robolectric.
+ */
+public class KeyValueListParserWrapper {
+    private KeyValueListParser mParser;
+
+    public KeyValueListParserWrapper(KeyValueListParser parser) {
+        mParser = parser;
+    }
+
+    /**
+     * Get real {@link KeyValueListParser}
+     */
+    public KeyValueListParser getKeyValueListParser() {
+        return mParser;
+    }
+
+    /**
+     * Resets the parser with a new string to parse. The string is expected to be in the following
+     * format:
+     * <pre>key1=value,key2=value,key3=value</pre>
+     *
+     * where the delimiter is a comma.
+     *
+     * @param str the string to parse.
+     * @throws IllegalArgumentException if the string is malformed.
+     */
+    public void setString(String str) throws IllegalArgumentException {
+        mParser.setString(str);
+    }
+
+    /**
+     * Get the value for key as a boolean.
+     * @param key The key to lookup.
+     * @param defaultValue The value to return if the key was not found.
+     * @return the string value associated with the key.
+     */
+    public boolean getBoolean(String key, boolean defaultValue) {
+        return mParser.getBoolean(key, defaultValue);
+    }
+
+    /**
+     * Get the value for key as a long.
+     * @param key The key to lookup.
+     * @param defaultValue The value to return if the key was not found, or the value was not a
+     *                     long.
+     * @return the long value associated with the key.
+     */
+    public long getLong(String key, long defaultValue) {
+        return mParser.getLong(key, defaultValue);
+    }
+}