| /* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| |
| /** |
| 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); |
| |
| new TestCase( SECTION, |
| "var s = ''; s.length", |
| 0, |
| eval("var s = ''; s.length") ); |
| |
| 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); |
| } |
| |
| new TestCase( SECTION, |
| "var s = '" + TEST_STRING+ "'; s", |
| EXPECT_STRING, |
| eval("var s = '" + TEST_STRING+ "'; s") ); |
| |
| 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; |
| } |
| |