tyler.durden/test262
1
0
Fork 0
mirror of https://github.com/tc39/test262.git synced 2025-07-30 09:24:41 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add Array.from non-writable property tests

Browse Source
This commit is contained in:
Alexey Shvayka 2020-02-20 01:07:47 +02:00 committed by Rick Waldron
parent 8d4fbb4ab9
commit 61aa9951f2
2 changed files with 89 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
test/built-ins/Array/from/iter-set-elem-prop-non-writable.js Normal file
View File

@ -0,0 +1,43 @@
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.from
description: >
Non-writable properties are overwritten by CreateDataProperty.
(result object's "0" is non-writable, items is iterable)
info: |
Array.from ( items [ , mapfn [ , thisArg ] ] )
[...]
5. If usingIterator is not undefined, then
[...]
e. Repeat,
[...]
viii. Let defineStatus be CreateDataPropertyOrThrow(A, Pk, mappedValue).
[...]
features: [generators]
includes: [propertyHelper.js]
---*/
var items = function* () {
yield 2;
};
var A = function(_length) {
Object.defineProperty(this, "0", {
value: 1,
writable: false,
enumerable: false,
configurable: true,
});
};
var res = Array.from.call(A, items());
verifyProperty(res, "0", {
value: 2,
writable: true,
enumerable: true,
configurable: true,
});

46
test/built-ins/Array/from/source-object-length-set-elem-prop-non-writable.js Normal file
View File

@ -0,0 +1,46 @@
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.from
description: >
Non-writable properties are overwritten by CreateDataProperty.
(result object's "0" is non-writable, items is not iterable)
info: |
Array.from ( items [ , mapfn [ , thisArg ] ] )
[...]
4. Let usingIterator be ? GetMethod(items, @@iterator).
5. If usingIterator is not undefined, then
[...]
6. NOTE: items is not an Iterable so assume it is an array-like object.
[...]
12. Repeat, while k < len
[...]
e. Perform ? CreateDataPropertyOrThrow(A, Pk, mappedValue).
[...]
includes: [propertyHelper.js]
---*/
var items = {
"0": 2,
length: 1,
};
var A = function(_length) {
Object.defineProperty(this, "0", {
value: 1,
writable: false,
enumerable: false,
configurable: true,
});
};
var res = Array.from.call(A, items);
verifyProperty(res, "0", {
value: 2,
writable: true,
enumerable: true,
configurable: true,
});