52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
|
// Copyright 2021 the V8 project authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
// Flags: --harmony-object-has-own
|
||
|
|
|
||
|
|
let object = { foo: false };
|
||
|
|
assertTrue((Object.hasOwn(object, "foo")));
|
||
|
|
|
||
|
|
let object2 = Object.create({ foo: true });
|
||
|
|
assertFalse(Object.hasOwn(object2, "foo"));
|
||
|
|
|
||
|
|
let object3 = Object.create(null);
|
||
|
|
assertFalse(Object.hasOwn(object3, "foo"));
|
||
|
|
|
||
|
|
let O = function() {
|
||
|
|
this.foo = 42;
|
||
|
|
};
|
||
|
|
let object8 = new O;
|
||
|
|
assertTrue((Object.hasOwn(object8, "foo")));
|
||
|
|
|
||
|
|
// Object is undefined or null
|
||
|
|
assertThrows(() => Object.hasOwn(undefined). TypeError);
|
||
|
|
assertThrows(() => Object.hasOwn(null). TypeError);
|
||
|
|
|
||
|
|
// Using defineProperty
|
||
|
|
let object4 = {};
|
||
|
|
Object.defineProperty(object4, "foo", {
|
||
|
|
value: 42
|
||
|
|
});
|
||
|
|
assertTrue((Object.hasOwn(object4, "foo")));
|
||
|
|
|
||
|
|
// Object.defineProperty with base
|
||
|
|
let base = {};
|
||
|
|
Object.defineProperty(base, "foo", {
|
||
|
|
value: 42,
|
||
|
|
configurable: true
|
||
|
|
});
|
||
|
|
let object5 = Object.create(base);
|
||
|
|
assertTrue((Object.hasOwn(base, "foo")));
|
||
|
|
assertFalse((Object.hasOwn(object5, "foo")));
|
||
|
|
|
||
|
|
// Prototype with getter and/or setter
|
||
|
|
let object6 = {
|
||
|
|
get foo() {}
|
||
|
|
};
|
||
|
|
let object7 = {
|
||
|
|
set foo(x) {}
|
||
|
|
};
|
||
|
|
assertTrue((Object.hasOwn(object6, "foo")));
|
||
|
|
assertTrue((Object.hasOwn(object7, "foo")));
|