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87 lines
3.6 KiB
JavaScript
87 lines
3.6 KiB
JavaScript
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/* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code, released March
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* 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*
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*/
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/**
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File Name: 15.5.4.5.1.js
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ECMA Section: 15.5.4.5 String.prototype.charCodeAt(pos)
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Description: Returns a number (a nonnegative integer less than 2^16)
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representing the Unicode encoding of the character at
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position pos in this string. If there is no character
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at that position, the number is NaN.
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When the charCodeAt method is called with one argument
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pos, the following steps are taken:
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1. Call ToString, giving it the theis value as its
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argument
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2. Call ToInteger(pos)
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3. Compute the number of characters in result(1).
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4. If Result(2) is less than 0 or is not less than
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Result(3), return NaN.
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5. Return a value of Number type, of positive sign, whose
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magnitude is the Unicode encoding of one character
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from result 1, namely the characer at position Result
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(2), where the first character in Result(1) is
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considered to be at position 0.
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Note that the charCodeAt funciton is intentionally
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generic; it does not require that its this value be a
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String object. Therefore it can be transferred to other
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kinds of objects for use as a method.
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Author: christine@netscape.com
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Date: 2 october 1997
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*/
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var SECTION = "15.5.4.5-1";
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var VERSION = "ECMA_1";
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startTest();
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var TITLE = "String.prototype.charCodeAt";
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writeHeaderToLog( SECTION + " "+ TITLE);
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var TEST_STRING = new String( " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~" );
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var testcases = getTestCases();
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test();
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function getTestCases() {
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var array = new Array();
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for ( j = 0, i = 0x0020; i < 0x007e; i++, j++ ) {
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array[j] = new TestCase( SECTION, "TEST_STRING.charCodeAt("+j+")", i, TEST_STRING.charCodeAt( j ) );
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}
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item = array.length;
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array[item++] = new TestCase( SECTION, 'TEST_STRING.charCodeAt('+i+')', NaN, TEST_STRING.charCodeAt( i ) );
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return array;
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}
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function test() {
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for ( tc = 0; tc < testcases.length; tc++ ) {
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testcases[tc].passed = writeTestCaseResult(
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testcases[tc].expect,
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testcases[tc].actual,
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testcases[tc].description +" = "+ testcases[tc].actual );
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testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "
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}
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stopTest();
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return ( testcases );
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}
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