js/src/tests/ecma/String/15.5.4.4-3.js@6474c204b198
js/src/tests/ecma/String/15.5.4.4-3.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 /**
8 File Name: 15.5.4.4-3.js
9 ECMA Section: 15.5.4.4 String.prototype.charAt(pos)
10 Description: Returns a string containing the character at position
11 pos in the string. If there is no character at that
12 string, the result is the empty string. The result is
13 a string value, not a String object.
15 When the charAt method is called with one argument,
16 pos, the following steps are taken:
17 1. Call ToString, with this value as its argument
18 2. Call ToInteger pos
19 3. Compute the number of characters in Result(1)
20 4. If Result(2) is less than 0 is or not less than
21 Result(3), return the empty string
22 5. Return a string of length 1 containing one character
23 from result (1), the character at position Result(2).
25 Note that the charAt function is intentionally generic;
26 it does not require that its this value be a String
27 object. Therefore it can be transferred to other kinds
28 of objects for use as a method.
30 This tests assiging charAt to a user-defined function.
32 Author: christine@netscape.com
33 Date: 2 october 1997
34 */
35 var SECTION = "15.5.4.4-3";
36 var VERSION = "ECMA_1";
37 startTest();
38 var TITLE = "String.prototype.charAt";
40 writeHeaderToLog( SECTION + " "+ TITLE);
42 var foo = new MyObject('hello');
45 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "h", foo.charAt(0) );
46 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "e", foo.charAt(1) );
47 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "l", foo.charAt(2) );
48 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "l", foo.charAt(3) );
49 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "o", foo.charAt(4) );
50 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "", foo.charAt(-1) );
51 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "", foo.charAt(5) );
53 var boo = new MyObject(true);
55 new TestCase( SECTION, "var boo = new MyObject(true); ", "t", boo.charAt(0) );
56 new TestCase( SECTION, "var boo = new MyObject(true); ", "r", boo.charAt(1) );
57 new TestCase( SECTION, "var boo = new MyObject(true); ", "u", boo.charAt(2) );
58 new TestCase( SECTION, "var boo = new MyObject(true); ", "e", boo.charAt(3) );
60 var noo = new MyObject( Math.PI );
62 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "3", noo.charAt(0) );
63 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", ".", noo.charAt(1) );
64 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "1", noo.charAt(2) );
65 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "4", noo.charAt(3) );
66 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "1", noo.charAt(4) );
67 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "5", noo.charAt(5) );
68 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "9", noo.charAt(6) );
70 test();
72 function MyObject (v) {
73 this.value = v;
74 this.toString = new Function( "return this.value +'';" );
75 this.valueOf = new Function( "return this.value" );
76 this.charAt = String.prototype.charAt;
77 }
