| // 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-proxy-object-internal-methods-and-internal-slots-setprototypeof-v |
| description: > |
| Return true if ToBoolean(trap result) is true, and target.[[IsExtensible]] is |
| true |
| info: | |
| [[SetPrototypeOf]] (V) |
| |
| 8. Let booleanTrapResult be ToBoolean(? Call(trap, handler, « target, V »)). |
| 9. If booleanTrapResult is false, return false. |
| 10. Let extensibleTarget be ? IsExtensible(target). |
| 11. If extensibleTarget is true, return true. |
| features: [Proxy, Reflect, Reflect.setPrototypeOf, Symbol] |
| ---*/ |
| |
| var called; |
| var target = new Proxy({}, { |
| isExtensible: function() { |
| called += 1; |
| return true; |
| }, |
| getPrototypeOf: function() { |
| throw new Test262Error("target.[[GetPrototypeOf]] is not called"); |
| } |
| }); |
| |
| var p = new Proxy(target, { |
| setPrototypeOf: function(t, v) { |
| return v.attr; |
| } |
| }); |
| |
| var result; |
| |
| called = 0; |
| result = Reflect.setPrototypeOf(p, { |
| attr: true |
| }); |
| assert.sameValue(result, true, "true"); |
| assert.sameValue(called, 1, "true - isExtensible is called"); |
| |
| called = 0; |
| result = Reflect.setPrototypeOf(p, { |
| attr: "false" |
| }); |
| assert.sameValue(result, true, "string"); |
| assert.sameValue(called, 1, "string - isExtensible is called"); |
| |
| called = 0; |
| result = Reflect.setPrototypeOf(p, { |
| attr: 42 |
| }); |
| assert.sameValue(result, true, "42"); |
| assert.sameValue(called, 1, "number - isExtensible is called"); |
| |
| called = 0; |
| result = Reflect.setPrototypeOf(p, { |
| attr: p |
| }); |
| assert.sameValue(result, true, "p"); |
| assert.sameValue(called, 1, "object - isExtensible is called"); |
| |
| called = 0; |
| result = Reflect.setPrototypeOf(p, { |
| attr: [] |
| }); |
| assert.sameValue(result, true, "[]"); |
| assert.sameValue(called, 1, "[] - isExtensible is called"); |
| |
| called = 0; |
| result = Reflect.setPrototypeOf(p, { |
| attr: Symbol(1) |
| }); |
| assert.sameValue(result, true, "symbol"); |
| assert.sameValue(called, 1, "symbol - isExtensible is called"); |