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46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/**
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File Name: number-003.js
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Corresponds To: 15.7.4.3-3.js
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ECMA Section: 15.7.4.3.1 Number.prototype.valueOf()
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Description:
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Returns this number value.
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The valueOf function is not generic; it generates a runtime error if its
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this value is not a Number object. Therefore it cannot be transferred to
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other kinds of objects for use as a method.
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Author: christine@netscape.com
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Date: 16 september 1997
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*/
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var SECTION = "number-003";
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var VERSION = "JS1_4";
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var TITLE = "Exceptions for Number.valueOf()";
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startTest();
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writeHeaderToLog( SECTION + " Number.prototype.valueOf()");
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var result = "Failed";
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var exception = "No exception thrown";
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var expect = "Passed";
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try {
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VALUE_OF = Number.prototype.valueOf;
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OBJECT = new String("Infinity");
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OBJECT.valueOf = VALUE_OF;
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result = OBJECT.valueOf();
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} catch ( e ) {
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result = expect;
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exception = e.toString();
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}
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new TestCase(
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SECTION,
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"Assigning Number.prototype.valueOf as the valueOf of a String object " +
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" (threw " + exception +")",
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expect,
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result );
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test();
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