mirror of https://github.com/tc39/test262.git
25 lines
823 B
JavaScript
25 lines
823 B
JavaScript
// Copyright (c) 2016 The V8 Project authors. 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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es6id: 20.1.2.5
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esid: sec-number.issafeinteger
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description: >
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Return true if argument is a safe integer
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info: |
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Number.isSafeInteger ( number )
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[...]
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3. Let integer be ToInteger(number).
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4. If integer is not equal to number, return false.
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5. If abs(integer) ≤ 2**53-1, return true.
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[...]
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---*/
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assert.sameValue(Number.isInteger(1), true, "1");
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assert.sameValue(Number.isInteger(-0), true, "-0");
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assert.sameValue(Number.isInteger(0), true, "0");
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assert.sameValue(Number.isInteger(-1), true, "-1");
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assert.sameValue(Number.isInteger(9007199254740991), true, "9007199254740991");
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assert.sameValue(Number.isInteger(-9007199254740991), true, "-9007199254740991");
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