add jerryscript source code

APP_Framework/lib/JerryScript/jerryscript/tests/jerry/object-is-extensible.js

@@ -0,0 +1,29 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// 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.
+
+// New objects are extensible.
+var empty = {};
+assert (Object.isExtensible(empty) === true);
+
+// ...but that can be changed.
+Object.preventExtensions(empty);
+assert(Object.isExtensible(empty) === false);
+
+// Sealed objects are by definition non-extensible.
+var sealed = Object.seal({});
+assert (Object.isExtensible(sealed) === false);
+
+// Frozen objects are also by definition non-extensible.
+var frozen = Object.freeze({});
+assert(Object.isExtensible(frozen) === false);