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LibJS: Fix Array.prototype.indexOf fromIndex negative

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If negative fromIndex considers displacement from the end of the array
without decreasing 1 of de size.
This commit is contained in:
Kesse Jones 2020-04-22 08:45:26 -03:00 • committed by Andreas Kling
parent edd8abc4cf
commit 6d308113b8
2 changed files with 4 additions and 1 deletions
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3
Libraries/LibJS/Tests/Array.prototype.indexOf.js
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@ -14,6 +14,9 @@ try {
assert(array.indexOf(1, 1000) === -1);
assert(array.indexOf(1, -1000) === 2);
assert(array.indexOf('serenity') === -1);
assert(array.indexOf(false, -1) === 4);
assert(array.indexOf(2, -1) === -1);
assert(array.indexOf(2, -2) === 3);
assert([].indexOf('serenity') === -1);
assert([].indexOf('serenity', 10) === -1);
assert([].indexOf('serenity', -10) === -1);