| <html> |
| <head> |
| <script> |
| function print(msg) |
| { |
| document.getElementById('console').innerHTML += msg + "<br>"; |
| } |
| |
| function printTests(type, object) |
| { |
| try { print(type + ' : ' + object); } catch(e) { print(e); } |
| try { print('[' + type + '] : ' + [object]); } catch(e) { print(e); } |
| try { print('String(' + type + ') : ' + String(object)); } catch(e) { print(e); } |
| try { print('String([' + type + ']) : ' + String([object])); } catch(e) { print(e); } |
| try { print(type + '.toString : ' + object.toString); } catch(e) { print(e); } |
| try { var toString = object.toString; print(type + '.toString() (cached in variable) : ' + toString()); } catch(e) { print(e); } |
| try { print(type + '.toString() : ' + object.toString()); } catch(e) { print(e); } |
| try { print('[' + type + '].toString() : ' + [object].toString()); } catch(e) { print(e); } |
| try { print(type + '.valueOf() : ' + object.valueOf()); } catch(e) { print(e); } |
| try { print('[' + type + '].valueOf() : ' + [object].valueOf()); } catch(e) { print(e); } |
| } |
| |
| function test(type, object) |
| { |
| print('<b>Unmodified ' + type + '</b>'); |
| printTests(type, object); |
| |
| print(''); |
| print('<b>' + type + ' with modified toString and valueOf</b>'); |
| object.toString = function() { return "toString" } |
| object.valueOf = function() { return "valueOf" } |
| printTests(type, object); |
| |
| print(''); |
| print('<b>' + type + ' with modified toString that returns an Object</b>'); |
| object.toString = function() { return new Object(); } |
| printTests(type, object); |
| |
| print(''); |
| print('<b>' + type + ' with modified valueOf that returns an Object</b>'); |
| object.toString = function() { return 'toString'; } |
| object.valueOf = function() { return new Object(); } |
| printTests(type, object); |
| |
| print(''); |
| print('<b>' + type + ' with modified toString and valueOf that returns an Object</b>'); |
| object.toString = function() { return new Object(); } |
| printTests(type, object); |
| |
| print(''); |
| print('<b>' + type + ' with modified toString that throws an exception</b>'); |
| object.toString = function() { throw "Exception"; } |
| object.valueOf = function() { return "valueOf"; } |
| printTests(type, object); |
| |
| print(''); |
| print('<b>' + type + ' with modified valueOf that throws an exception</b>'); |
| object.toString = function() { return 'toString'; } |
| object.valueOf = function() { throw "Exception"; } |
| printTests(type, object); |
| |
| print(''); |
| print('<b>' + type + ' with modified toString an valueOf that throw exceptions</b>'); |
| object.toString = function() { throw "Exception"; } |
| object.valueOf = function() { throw "Exception"; } |
| printTests(type, object); |
| |
| print(''); |
| print('<hr>'); |
| } |
| |
| function runTests() |
| { |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| test('span', document.createElement('span')); |
| |
| test('window', window); |
| test('Navigator', window.navigator); |
| test('History', window.history); |
| test('Selection', window.getSelection()); |
| } |
| </script> |
| </head> |
| <body onload="runTests();"> |
| <div id="console"> |
| </div> |
| </body> |
| </html> |
