<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=1107443 --> <head> <meta charset="utf-8"> <title>Test for Bug 1107443</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> <script type="application/javascript"> /** Test for Bug 1107443 **/ try { Object.defineProperty(window, "nosuchprop", { value: 5, configurable: false }); throw "didn't throw"; } catch (e) { is(e instanceof TypeError, true, "defineProperty(window) with a non-configurable property should " + "throw a TypeError, instead got: " + e); is(Object.getOwnPropertyDescriptor(window, "nosuchprop"), undefined, 'Window should not have property after an attempt to define it failed'); } Object.defineProperty(window, "nosuchprop", { value: 6 }); var desc = Object.getOwnPropertyDescriptor(window, "nosuchprop"); is(typeof(desc), "object", "Should have a property now"); todo_is(desc.configurable, true, "Property should be configurable"); is(desc.writable, false, "Property should be readonly"); is(desc.value, 6, "Property should have the right value"); Object.defineProperty(window, "nosuchprop2", { value: 7, configurable: true }); desc = Object.getOwnPropertyDescriptor(window, "nosuchprop2"); is(typeof(desc), "object", "Should have a property now"); is(desc.configurable, true, "Property should be configurable"); is(desc.writable, false, "Property should be readonly"); is(desc.value, 7, "Property should have the right value"); </script> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1107443">Mozilla Bug 1107443</a> <p id="display"></p> <div id="content" style="display: none"> </div> <pre id="test"> </pre> </body> </html>