Strict mode Failing
Expected no error, got TypeError: Cannot read property 'call' of undefined
non-Strict mode Failing
Expected no error, got TypeError: Cannot read property 'call' of undefined
Features:
- change-array-by-copy
Expected no error, got TypeError: Cannot read property 'call' of undefined
Expected no error, got TypeError: Cannot read property 'call' of undefined
// Copyright (C) 2021 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype.toSpliced
description: Array.prototype.toSpliced reads the items of the original array in order
info: |
22.1.3.25 Array.prototype.toSpliced (start, deleteCount , ...items )
...
14. Let i be 0.
15. Let r be actualStart + actualDeleteCount.
16. Repeat, while i < actualStart,
a. Let Pi be ! ToString(𝔽(i)).
b. Let iValue be ? Get(O, Pi).
c. Perform ! CreateDataPropertyOrThrow(A, Pi, iValue).
d. Set i to i + 1.
17. For each element E of items, do
a. Let Pi be ! ToString(𝔽(i)).
b. Perform ! CreateDataPropertyOrThrow(A, Pi, E).
c. Set i to i + 1.
18. Repeat, while i < newLen,
a. Let Pi be ! ToString(𝔽(i)).
b. Let from be ! ToString(𝔽(r)).
c. Let fromValue be ? Get(O, from).
d. Perform ! CreateDataPropertyOrThrow(A, Pi, fromValue).
e. Set i to i + 1.
f. Set r to r + 1.
...
features: [change-array-by-copy]
includes: [compareArray.js]
---*/
var order = [];
var arrayLike = {
get 0() { order.push(0); return "a" },
get 1() { order.push(1); return "b" },
2: "none",
get 3() { order.push(3); return "c" },
length: 4,
};
var result = Array.prototype.toSpliced.call(arrayLike, 2, 1);
assert.compareArray(result, ["a", "b", "c"]);
assert.compareArray(order, [0, 1, 3]);
order = [];
var arr = [0, 1, "none", 3];
Object.defineProperty(arr, 0, { get: function() { order.push(0); return "a" } });
Object.defineProperty(arr, 1, { get: function() { order.push(1); return "b" } });
Object.defineProperty(arr, 3, { get: function() { order.push(3); return "c" } });
result = Array.prototype.toSpliced.call(arr, 2, 1);
assert.compareArray(result, ["a", "b", "c"]);
assert.compareArray(order, [0, 1, 3]);