mirror of https://github.com/tc39/test262.git
32 lines
800 B
JavaScript
32 lines
800 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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esid: sec-isnan-number
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description: >
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Throws a TypeError if the result of calling number.@@toPrimitive is an Object
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info: |
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isNaN (number)
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1. Let num be ? ToNumber(number).
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ToPrimitive ( input [ , PreferredType ] )
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[...]
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4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
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5. If exoticToPrim is not undefined, then
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a. Let result be ? Call(exoticToPrim, input, « hint »).
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b. If Type(result) is not Object, return result.
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c. Throw a TypeError exception.
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features: [Symbol.toPrimitive]
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---*/
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var obj = {};
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obj[Symbol.toPrimitive] = function() {
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return [42];
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};
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assert.throws(TypeError, function() {
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isNaN(obj);
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});
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