Implement Object.getPrototypeOf()

JerryScript-DCO-1.0-Signed-off-by: Zsolt Borbély zsborbely.u-szeged@partner.samsung.com

tests/jerry/object_getprototypeof.js

@@ -0,0 +1,45 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+// Copyright 2015 University of Szeged.
+//
+// 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.
+
+try {
+  var v;
+  Object.getPrototypeOf(v);
+  assert (false);
+} catch (e) {
+  assert (e instanceof TypeError);
+}
+
+try {
+  Object.getPrototypeOf("foo");
+  assert (false);
+} catch (e) {
+  assert (e instanceof TypeError);
+}
+
+try {
+  Object.getPrototypeOf(60);
+  assert (false);
+} catch (e) {
+  assert (e instanceof TypeError);
+}
+
+var obj = { x : "foo" };
+assert (Object.getPrototypeOf(obj) === Object.prototype)
+
+var constructor = function () {};
+constructor.prototype = obj;
+
+var d_obj = new constructor();
+assert (Object.getPrototypeOf(d_obj) === obj);