pebble/third_party/jerryscript/tests/jerry/object-defineproperty.js

// Copyright 2015-2016 Samsung Electronics Co., Ltd.
// Copyright 2015-2016 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.

var obj = [];

Object.defineProperty (obj, "prop", {
    value: 2010,
    writable: true,
    enumerable: true,
    configurable: false
});

assert (obj.hasOwnProperty ("prop"));
function getFunc() {
    return 20;
}

try {
    Object.defineProperty (obj, "prop", {
        get: getFunc
    });
    assert (false);
} catch (e) {
    assert (e instanceof TypeError);
    var desc = Object.getOwnPropertyDescriptor (obj, "prop");
    assert (desc.value === 2010);
    assert (typeof (desc.get) === 'undefined');
}

obj = {};
var setter = function () {};

Object.defineProperty(obj, "prop", {
    set: setter,
    configurable: true
});

var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");

Object.defineProperty(obj, "prop", {
    set: undefined
});

var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
assert (desc1.set === setter && desc2.set === undefined);

obj = {};

/* This error is thrown even in non-strict mode. */
Object.defineProperty(obj, 'f', {
  set: function(value) { throw 234; },
});

try {
  obj.f = 5;
  assert (false);
} catch (err) {
  assert (err === 234);
}