diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/toSpliced/mutate-while-iterating.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/toSpliced/mutate-while-iterating.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/toSpliced/mutate-while-iterating.js b/js/src/tests/test262/built-ins/Array/prototype/toSpliced/mutate-while-iterating.js new file mode 100644 index 0000000000..208976b7cb --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/toSpliced/mutate-while-iterating.js @@ -0,0 +1,52 @@ +// 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 gets array elements one at a time. +info: | + Array.prototype.toSpliced ( start, deleteCount, ...items ) + + ... + 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. + ... + 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 arr = [0, 1, 2, 3]; +var zerothElementStorage = arr[0]; +Object.defineProperty(arr, "0", { + get() { + arr[1] = 42; + return zerothElementStorage; + }, + set(v) { + zerothElementStorage = v; + } +}); +Object.defineProperty(arr, "2", { + get() { + arr[0] = 17; + arr[3] = 37; + return 2; + } +}); + +assert.compareArray(arr.toSpliced(1, 0, 0.5), [0, 0.5, 42, 2, 37]); + +reportCompare(0, 0); |