// 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.

assert (JSON.stringify (Object.getOwnPropertyNames("hello")) === '["0","1","2","3","4","length"]');

var n = Object.assign(42, {a: "str"});
assert (n instanceof Number);
assert (n.valueOf() === 42);
assert (n.a === "str");

assert (JSON.stringify (Object.getOwnPropertySymbols("hello")) === '[]');

assert (JSON.stringify (Object.keys("str")) === '["0","1","2"]');

var d = Object.getOwnPropertyDescriptor("hello", '1');
assert (d.value === "e");
assert (d.writable === false);
assert (d.enumerable === true);
assert (d.configurable === false);

assert (Object.seal(42) === 42);
assert (Object.seal("a") === "a");
assert (Object.seal(undefined) === undefined);
assert (Object.seal() === undefined);

assert (Object.isSealed(42) === true);
assert (Object.isSealed("a") === true);
assert (Object.isSealed(undefined) === true);
assert (Object.isSealed() === true);

assert (Object.freeze(42) === 42);
assert (Object.freeze("a") === "a");
assert (Object.freeze(undefined) === undefined);
assert (Object.freeze() === undefined);

assert (Object.isFrozen(42) === true);
assert (Object.isFrozen("a") === true);
assert (Object.isFrozen(undefined) === true);
assert (Object.isFrozen() === true);

assert (Object.preventExtensions(42) === 42);
assert (Object.preventExtensions("a") === "a");
assert (Object.preventExtensions(undefined) === undefined);
assert (Object.preventExtensions() === undefined);

assert (Object.isExtensible(42) === false);
assert (Object.isExtensible("a") === false);
assert (Object.isExtensible(undefined) === false);
assert (Object.isExtensible() === false);