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28 lines
1.0 KiB
JavaScript
28 lines
1.0 KiB
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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esid: sec-isfinite-number
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description: >
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number argument is converted by ToNumber
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info: |
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isFinite (number)
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1. Let num be ? ToNumber(number).
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2. If num is NaN, +∞, or -∞, return false.
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3. Otherwise, return true.
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---*/
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assert.sameValue(isFinite("0"), true, "'0'");
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assert.sameValue(isFinite(""), true, "the empty string");
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assert.sameValue(isFinite("Infinity"), false, "'Infinity'");
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assert.sameValue(isFinite("this is not a number"), false, "string");
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assert.sameValue(isFinite(true), true, "true");
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assert.sameValue(isFinite(false), true, "false");
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assert.sameValue(isFinite([1]), true, "Object [1]");
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assert.sameValue(isFinite([Infinity]), false, "Object [Infinity]");
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assert.sameValue(isFinite([NaN]), false, "Object [NaN]");
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assert.sameValue(isFinite(null), true, "null");
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assert.sameValue(isFinite(undefined), false, "undefined");
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assert.sameValue(isFinite(), false, "no arg");
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