/* * Any copyright is dedicated to the Public Domain. * http://creativecommons.org/licenses/publicdomain/ */ //----------------------------------------------------------------------------- var BUGNUMBER = 492840; var summary = 'ES5 Object.create(O [, Properties])'; print(BUGNUMBER + ": " + summary); /************** * BEGIN TEST * **************/ assertEq("create" in Object, true); assertEq(Object.create.length, 2); var o, desc, props, proto; o = Object.create(null); assertEq(Object.getPrototypeOf(o), null, "bad null-proto"); o = Object.create(null, { a: { value: 17, enumerable: false } }); assertEq(Object.getPrototypeOf(o), null, "bad null-proto"); assertEq("a" in o, true); desc = Object.getOwnPropertyDescriptor(o, "a"); assertEq(desc !== undefined, true, "no descriptor?"); assertEq(desc.value, 17); assertEq(desc.enumerable, false); assertEq(desc.configurable, false); assertEq(desc.writable, false); props = Object.create({ bar: 15 }); Object.defineProperty(props, "foo", { enumerable: false, value: 42 }); proto = { baz: 12 }; o = Object.create(proto, props); assertEq(Object.getPrototypeOf(o), proto); assertEq(Object.getOwnPropertyDescriptor(o, "foo"), undefined); assertEq("foo" in o, false); assertEq(Object.getOwnPropertyDescriptor(o, "bar"), undefined); assertEq("bar" in o, false); assertEq(Object.getOwnPropertyDescriptor(o, "baz"), undefined); assertEq(o.baz, 12); assertEq(o.hasOwnProperty("baz"), false); try { var actual = Object.create(Object.create({}, { boom: { get: function() { return "base"; }}}), { boom: { get: function() { return "overridden"; }}}).boom } catch (e) { } assertEq(actual, "overridden"); /******************************************************************************/ reportCompare(true, true); print("All tests passed!");