| // Test that you can't call the SavedFrame constructor and can only use |
| // SavedFrame's getters on SavedFrame instances. |
| |
| load(libdir + "asserts.js"); |
| |
| let proto = Object.getPrototypeOf(saveStack()); |
| |
| // Can't create new SavedFrame instances by hand. |
| print("Testing constructor"); |
| assertThrowsInstanceOf(() => { |
| new proto.constructor(); |
| }, TypeError); |
| |
| for (let p of ["source", "line", "column", "functionDisplayName", "parent"]) { |
| print("Testing getter: " + p); |
| // The getters shouldn't work on the prototype. |
| assertThrowsInstanceOf(() => proto[p], TypeError); |
| |
| // Nor should they work on random objects. |
| let o = {}; |
| Object.defineProperty(o, p, Object.getOwnPropertyDescriptor(proto, p)); |
| assertThrowsInstanceOf(() => o[p], TypeError); |
| } |
