8.4.js   [plain text]

/* 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:          8.4.js
    ECMA Section:       The String type
    Description:

    The String type is the set of all finite ordered sequences of zero or more
    Unicode characters. Each character is regarded as occupying a position
    within the sequence. These positions are identified by nonnegative
    integers. The leftmost character (if any) is at position 0, the next
    character (if any) at position 1, and so on. The length of a string is the
    number of distinct positions within it. The empty string has length zero
    and therefore contains no characters.

    Author:             christine@netscape.com
    Date:               12 november 1997
*/

    var SECTION = "8.4";
    var VERSION = "ECMA_1";
    startTest();
    var TITLE   = "The String type";

    writeHeaderToLog( SECTION + " "+ TITLE);

    var testcases = new Array();

    testcases[tc++] = new TestCase( SECTION,
                                    "var s = ''; s.length",
                                    0,
                                    eval("var s = ''; s.length") );

    testcases[tc++] = new TestCase( SECTION,
                                    "var s = ''; s.charAt(0)",
                                    "",
                                    eval("var s = ''; s.charAt(0)") );


    for ( var i = 0x0041, TEST_STRING = "", EXPECT_STRING = ""; i < 0x007B; i++ ) {
        TEST_STRING += ("\\u"+ DecimalToHexString( i ) );
        EXPECT_STRING += String.fromCharCode(i);
    }

    testcases[tc++] = new TestCase( SECTION,
                                    "var s = '" + TEST_STRING+ "'; s",
                                    EXPECT_STRING,
                                    eval("var s = '" + TEST_STRING+ "'; s") );

    testcases[tc++] = new TestCase( SECTION,
                                    "var s = '" + TEST_STRING+ "'; s.length",
                                    0x007B-0x0041,
                                    eval("var s = '" + TEST_STRING+ "'; s.length") );

    test();
function DecimalToHexString( n ) {
    n = Number( n );
    var h = "";

    for ( var i = 3; i >= 0; i-- ) {
        if ( n >= Math.pow(16, i) ){
            var t = Math.floor( n  / Math.pow(16, i));
            n -= t * Math.pow(16, i);
            if ( t >= 10 ) {
                if ( t == 10 ) {
                    h += "A";
                }
                if ( t == 11 ) {
                    h += "B";
                }
                if ( t == 12 ) {
                    h += "C";
                }
                if ( t == 13 ) {
                    h += "D";
                }
                if ( t == 14 ) {
                    h += "E";
                }
                if ( t == 15 ) {
                    h += "F";
                }
            } else {
                h += String( t );
            }
        } else {
            h += "0";
        }
    }

    return h;
}

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 );
}