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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/toSpliced/elements-read-in-order.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/toSpliced/elements-read-in-order.js | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/toSpliced/elements-read-in-order.js b/js/src/tests/test262/built-ins/Array/prototype/toSpliced/elements-read-in-order.js new file mode 100644 index 0000000000..da1b7fc905 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/toSpliced/elements-read-in-order.js @@ -0,0 +1,61 @@ +// 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]); + +reportCompare(0, 0); |