mirror of https://github.com/tc39/test262.git
31 lines
647 B
JavaScript
31 lines
647 B
JavaScript
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// Copyright (c) 2023 Ecma International. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-map.groupby
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description: Map.groupBy normalizes 0 for Map key
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info: |
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Map.groupBy ( items, callbackfn )
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...
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GroupBy ( items, callbackfn, coercion )
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6. Repeat,
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h. Else,
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i. Assert: coercion is zero.
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ii. If key is -0𝔽, set key to +0𝔽.
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...
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includes: [compareArray.js]
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features: [array-grouping, Map]
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---*/
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const arr = [-0, +0];
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const map = Map.groupBy(arr, function (i) { return i; });
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assert.sameValue(map.size, 1);
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assert.compareArray(map.get(0), [-0, 0]);
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