| utatane.tea@gmail.com | ca8ca42 | 2015-04-04 14:32:53 +0000 | [diff] [blame] | 1 | // This tests Object.seal and Object.freeze affect on Symbol properties. |
| 2 | |
| 3 | var object = { |
| 4 | [Symbol.iterator]: 42 |
| 5 | }; |
| 6 | |
| 7 | if (!object.hasOwnProperty(Symbol.iterator)) |
| 8 | throw "Error: object doesn't have Symbol.iterator"; |
| 9 | if (JSON.stringify(Object.getOwnPropertyDescriptor(object, Symbol.iterator)) !== '{"value":42,"writable":true,"enumerable":true,"configurable":true}') |
| 10 | throw "Error: bad property descriptor " + JSON.stringify(Object.getOwnPropertyDescriptor(object, Symbol.iterator)); |
| 11 | if (Object.getOwnPropertySymbols(object).length !== 1) |
| 12 | throw "Error: bad value " + Object.getOwnPropertySymbols(object).length; |
| 13 | if (Object.getOwnPropertySymbols(object)[0] !== Symbol.iterator) |
| 14 | throw "Error: bad value " + String(Object.getOwnPropertySymbols(object)[0]); |
| 15 | |
| 16 | Object.seal(object); |
| 17 | if (!object.hasOwnProperty(Symbol.iterator)) |
| 18 | throw "Error: object doesn't have Symbol.iterator"; |
| 19 | if (JSON.stringify(Object.getOwnPropertyDescriptor(object, Symbol.iterator)) !== '{"value":42,"writable":true,"enumerable":true,"configurable":false}') |
| 20 | throw "Error: bad property descriptor " + JSON.stringify(Object.getOwnPropertyDescriptor(object, Symbol.iterator)); |
| 21 | |
| 22 | Object.freeze(object); |
| 23 | if (!object.hasOwnProperty(Symbol.iterator)) |
| 24 | throw "Error: object doesn't have Symbol.iterator"; |
| 25 | if (JSON.stringify(Object.getOwnPropertyDescriptor(object, Symbol.iterator)) !== '{"value":42,"writable":false,"enumerable":true,"configurable":false}') |
| 26 | throw "Error: bad property descriptor " + JSON.stringify(Object.getOwnPropertyDescriptor(object, Symbol.iterator)); |
