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Diffstat (limited to 'js/src/tests/ecma/String/15.5.4.4-3.js')
-rw-r--r-- | js/src/tests/ecma/String/15.5.4.4-3.js | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/js/src/tests/ecma/String/15.5.4.4-3.js b/js/src/tests/ecma/String/15.5.4.4-3.js new file mode 100644 index 000000000..795d4e085 --- /dev/null +++ b/js/src/tests/ecma/String/15.5.4.4-3.js @@ -0,0 +1,78 @@ +/* -*- 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: 15.5.4.4-3.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. + + This tests assiging charAt to a user-defined function. + + Author: christine@netscape.com + Date: 2 october 1997 +*/ +var SECTION = "15.5.4.4-3"; +var VERSION = "ECMA_1"; +startTest(); +var TITLE = "String.prototype.charAt"; + +writeHeaderToLog( SECTION + " "+ TITLE); + +var foo = new MyObject('hello'); + + +new TestCase( SECTION, "var foo = new MyObject('hello'); ", "h", foo.charAt(0) ); +new TestCase( SECTION, "var foo = new MyObject('hello'); ", "e", foo.charAt(1) ); +new TestCase( SECTION, "var foo = new MyObject('hello'); ", "l", foo.charAt(2) ); +new TestCase( SECTION, "var foo = new MyObject('hello'); ", "l", foo.charAt(3) ); +new TestCase( SECTION, "var foo = new MyObject('hello'); ", "o", foo.charAt(4) ); +new TestCase( SECTION, "var foo = new MyObject('hello'); ", "", foo.charAt(-1) ); +new TestCase( SECTION, "var foo = new MyObject('hello'); ", "", foo.charAt(5) ); + +var boo = new MyObject(true); + +new TestCase( SECTION, "var boo = new MyObject(true); ", "t", boo.charAt(0) ); +new TestCase( SECTION, "var boo = new MyObject(true); ", "r", boo.charAt(1) ); +new TestCase( SECTION, "var boo = new MyObject(true); ", "u", boo.charAt(2) ); +new TestCase( SECTION, "var boo = new MyObject(true); ", "e", boo.charAt(3) ); + +var noo = new MyObject( Math.PI ); + +new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "3", noo.charAt(0) ); +new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", ".", noo.charAt(1) ); +new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "1", noo.charAt(2) ); +new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "4", noo.charAt(3) ); +new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "1", noo.charAt(4) ); +new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "5", noo.charAt(5) ); +new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "9", noo.charAt(6) ); + +test(); + +function MyObject (v) { + this.value = v; + this.toString = new Function( "return this.value +'';" ); + this.valueOf = new Function( "return this.value" ); + this.charAt = String.prototype.charAt; +} + |