mirror of https://github.com/tc39/test262.git
Add Array.from with non-iterable test
This commit is contained in:
parent
b478d5fa29
commit
8d4fbb4ab9
|
@ -0,0 +1,52 @@
|
|||
// 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: >
|
||||
TypeError is thrown if CreateDataProperty fails.
|
||||
(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).
|
||||
[...]
|
||||
|
||||
CreateDataPropertyOrThrow ( O, P, V )
|
||||
|
||||
[...]
|
||||
3. Let success be ? CreateDataProperty(O, P, V).
|
||||
4. If success is false, throw a TypeError exception.
|
||||
---*/
|
||||
|
||||
var items = {
|
||||
length: 1,
|
||||
};
|
||||
|
||||
var A1 = function(_length) {
|
||||
this.length = 0;
|
||||
Object.preventExtensions(this);
|
||||
};
|
||||
|
||||
assert.throws(TypeError, function() {
|
||||
Array.from.call(A1, items);
|
||||
});
|
||||
|
||||
var A2 = function(_length) {
|
||||
Object.defineProperty(this, "0", {
|
||||
writable: true,
|
||||
configurable: false,
|
||||
});
|
||||
};
|
||||
|
||||
assert.throws(TypeError, function() {
|
||||
Array.from.call(A2, items);
|
||||
});
|
Loading…
Reference in New Issue