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// |reftest| module
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-module-namespace-exotic-objects-defineownproperty-p-desc
description: >
The [[DefineOwnProperty]] internal method returns `true` if no change is
requested, and `false` otherwise.
flags: [module]
features: [Symbol.iterator, Reflect, Symbol, Symbol.toStringTag]
---*/
import * as ns from './define-own-property.js';
export var local1;
var local2;
export { local2 as renamed };
export { local1 as indirect } from './define-own-property.js';
var sym = Symbol('test262');
const exported = ['local1', 'renamed', 'indirect'];
// Non-existant properties.
for (const key of ['local2', 0, sym, Symbol.iterator]) {
assert.sameValue(
Reflect.defineProperty(ns, key, {}),
false,
'Reflect.defineProperty: ' + key.toString()
);
assert.throws(TypeError, function() {
Object.defineProperty(ns, key, {});
}, 'Object.defineProperty: ' + key.toString());
}
// Own properties. No change requested.
for (const key of ([...exported, Symbol.toStringTag])) {
assert.sameValue(
Reflect.defineProperty(ns, key, {}),
true,
'Reflect.defineProperty: ' + key.toString()
);
assert.sameValue(
Object.defineProperty(ns, key, {}),
ns,
'Object.defineProperty: ' + key.toString()
);
}
assert.sameValue(
Reflect.defineProperty(ns, 'indirect',
{writable: true, enumerable: true, configurable: false}),
true,
'Reflect.defineProperty: indirect'
);
assert.sameValue(
Object.defineProperty(ns, 'indirect',
{writable: true, enumerable: true, configurable: false}),
ns,
'Object.defineProperty: indirect'
);
assert.sameValue(
Reflect.defineProperty(ns, Symbol.toStringTag,
{value: "Module", writable: false, enumerable: false,
configurable: false}),
true,
'Reflect.defineProperty: Symbol.toStringTag'
);
assert.sameValue(
Object.defineProperty(ns, Symbol.toStringTag,
{value: "Module", writable: false, enumerable: false,
configurable: false}),
ns,
'Object.defineProperty: Symbol.toStringTag'
);
// Own properties. Change requested.
for (const key of ([...exported, Symbol.toStringTag])) {
assert.sameValue(
Reflect.defineProperty(ns, key, {value: 123}),
false,
'Reflect.defineProperty: ' + key.toString()
);
assert.throws(TypeError, function() {
Object.defineProperty(ns, key, {value: 123});
}, 'Object.defineProperty: ' + key.toString());
}
assert.sameValue(
Reflect.defineProperty(ns, 'indirect',
{writable: true, enumerable: true, configurable: true}),
false,
'Reflect.defineProperty: indirect'
);
assert.throws(TypeError, function() {
Object.defineProperty(ns, 'indirect',
{writable: true, enumerable: true, configurable: true});
}, 'Object.defineProperty: indirect');
assert.sameValue(
Reflect.defineProperty(ns, Symbol.toStringTag,
{value: "module", writable: false, enumerable: false,
configurable: false}),
false,
'Reflect.defineProperty: Symbol.toStringTag'
);
assert.throws(TypeError, function() {
Object.defineProperty(ns, Symbol.toStringTag,
{value: "module", writable: false, enumerable: false,
configurable: false});
}, 'Object.defineProperty: Symbol.toStringTag');
// Indirect change requested through Object.freeze
// Try freezing more times than there are exported properties
for (let i = 1; i < exported.length + 2; i++) {
assert.throws(
TypeError,
function () {
Object.freeze(ns);
},
"Object.freeze: " + String(i)
);
}
for (const key of exported) {
const desc = Object.getOwnPropertyDescriptor(ns, key);
assert.sameValue(desc.writable, true, String(key) + " writable");
}
assert(!Object.isFrozen(ns), "namespace object not frozen");
reportCompare(0, 0);