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45 lines
1.0 KiB
JavaScript
45 lines
1.0 KiB
JavaScript
// Copyright (C) 2021 Rick Waldron. 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.prototype.set
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description: >
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Observing the expected behavior of keys when a BigInt and Number have
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the same value.
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info: |
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Map.prototype.set ( key , value )
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...
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Let p be the Record {[[key]]: key, [[value]]: value}.
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Append p as the last element of entries.
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...
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features: [BigInt]
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---*/
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const number = 9007199254740991;
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const bigint = 9007199254740991n;
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const m = new Map([
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[number, number],
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[bigint, bigint],
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]);
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assert.sameValue(m.size, 2);
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assert.sameValue(m.has(number), true);
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assert.sameValue(m.has(bigint), true);
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assert.sameValue(m.get(number), number);
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assert.sameValue(m.get(bigint), bigint);
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m.delete(number);
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assert.sameValue(m.size, 1);
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assert.sameValue(m.has(number), false);
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m.delete(bigint);
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assert.sameValue(m.size, 0);
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assert.sameValue(m.has(bigint), false);
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m.set(number, number);
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assert.sameValue(m.size, 1);
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m.set(bigint, bigint);
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assert.sameValue(m.size, 2);
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