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/* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code, released March
* 31, 1998.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
*/
/**
File Name: 15.5.4.4-1.js
ECMA Section: 15.5.4.4 String.prototype.charAt(pos)
Description: Returns a string containing the character at position
pos in the string. If there is no character at that
string, the result is the empty string. The result is
a string value, not a String object.
When the charAt method is called with one argument,
pos, the following steps are taken:
1. Call ToString, with this value as its argument
2. Call ToInteger pos
3. Compute the number of characters in Result(1)
4. If Result(2) is less than 0 is or not less than
Result(3), return the empty string
5. Return a string of length 1 containing one character
from result (1), the character at position Result(2).
Note that the charAt function is intentionally generic;
it does not require that its this value be a String
object. Therefore it can be transferred to other kinds
of objects for use as a method.
Author: christine@netscape.com
Date: 2 october 1997
*/
var SECTION = "15.5.4.4-2";
var VERSION = "ECMA_1";
startTest();
var TITLE = "String.prototype.charAt";
writeHeaderToLog( SECTION + " "+ TITLE);
var testcases = getTestCases();
test();
function getTestCases() {
var array = new Array();
var item = 0;
array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(0)", "t", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(0)") );
array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(1)", "r", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(1)") );
array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(2)", "u", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(2)") );
array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(3)", "e", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(3)") );
array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(4)", "", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(4)") );
array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(-1)", "", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(-1)") );
array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(true)", "r", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(true)") );
array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(false)", "t", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(false)") );
array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(0)", "", eval("x=new String();x.charAt(0)") );
array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(1)", "", eval("x=new String();x.charAt(1)") );
array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(-1)", "", eval("x=new String();x.charAt(-1)") );
array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(NaN)", "", eval("x=new String();x.charAt(Number.NaN)") );
array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(Number.POSITIVE_INFINITY)", "", eval("x=new String();x.charAt(Number.POSITIVE_INFINITY)") );
array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(Number.NEGATIVE_INFINITY)", "", eval("x=new String();x.charAt(Number.NEGATIVE_INFINITY)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(0)", "1", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(0)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(1)", "2", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(1)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(2)", "3", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(2)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(3)", "4", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(3)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(4)", "5", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(4)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(5)", "6", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(5)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(6)", "7", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(6)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(7)", "8", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(7)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(8)", "9", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(8)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(9)", "0", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(9)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(10)", "", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(10)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(Math.PI)", "4", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(Math.PI)") );
// MyOtherObject.toString will return "[object Object]
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(0)", "[", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(0)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(1)", "o", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(1)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(2)", "b", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(2)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(3)", "j", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(3)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(4)", "e", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(4)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(5)", "c", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(5)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(6)", "t", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(6)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(7)", " ", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(7)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(8)", "O", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(8)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(9)", "b", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(9)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(10)", "j", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(10)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(11)", "e", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(11)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(12)", "c", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(12)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(13)", "t", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(13)") );
array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(14)", "]", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(14)") );
return (array );
}
function test() {
for ( tc = 0; tc < testcases.length; tc++ ) {
testcases[tc].passed = writeTestCaseResult(
testcases[tc].expect,
testcases[tc].actual,
testcases[tc].description +" = "+
testcases[tc].actual );
testcases[tc].reason += ( testcases[tc].passed )
? ""
: "wrong value "
}
stopTest();
return ( testcases );
}
function MyObject( value ) {
this.value = value;
this.valueOf = new Function( "return this.value;" );
this.toString = new Function( "return this.value +''" );
this.charAt = String.prototype.charAt;
}
function MyOtherObject(value) {
this.value = value;
this.valueOf = new Function( "return this.value;" );
this.charAt = String.prototype.charAt;
}
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