Strict mode Passingnon-Strict mode Passing
Features:
- Reflect.setPrototypeOf
// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-immutable-prototype-exotic-objects-setprototypeof-v description: > Object.prototype's [[SetPrototypeOf]] returns false if value is not the same info: | 9.4.7.1 [[SetPrototypeOf]] (V) ... 2. Let current be the value of the [[Prototype]] internal slot of O. 3. If SameValue(V, current), return true. 4. Return false. 19.1.3 Properties of the Object Prototype Object The value of the [[Prototype]] internal slot of the Object prototype object is null and the initial value of the [[Extensible]] internal slot is true. features: [Reflect.setPrototypeOf] ---*/ var ObjProto = Object.prototype; assert.throws(TypeError, function() { Object.setPrototypeOf(ObjProto, {}); }, "Object.setPrototypeOf(ObjProto, {}) throws a TypeError"); assert.throws(TypeError, function() { Object.setPrototypeOf(ObjProto, Array.prototype); }, "Object.setPrototypeOf(ObjProto, Array.prototype) throws a TypeError"); assert.throws(TypeError, function() { Object.setPrototypeOf(ObjProto, ObjProto); }, "Object.setPrototypeOf(ObjProto, ObjProto) throws a TypeError"); assert.sameValue( Reflect.setPrototypeOf(ObjProto, {}), false, "Reflect.setPrototypeOf(ObjProto, {}) returns false" ); assert.sameValue( Reflect.setPrototypeOf(ObjProto, Array.prototype), false, "Reflect.setPrototypeOf(ObjProto, Array.prototype) returns false" ); assert.sameValue( Reflect.setPrototypeOf(ObjProto, ObjProto), false, "Reflect.setPrototypeOf(ObjProto, ObjProto) returns false" );