js/src/tests/test262/built-ins/Object/prototype/propertyIsEnumerable/symbol_property_toPrimitive.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

// Copyright (C) 2015 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: Object.prototype.propertyIsEnumerable with symbol and @@toPrimitive conversion
info: |
  19.1.3.4 Object.prototype.propertyIsEnumerable ( V )

  1. Let P be ToPropertyKey(V).
  2. ReturnIfAbrupt(P).
  ...
es6id: 19.1.3.4
features: [Symbol.toPrimitive]
---*/

var obj = {};
var sym = Symbol();

var callCount = 0;
var wrapper = {};
wrapper[Symbol.toPrimitive] = function() {
  callCount += 1;
  return sym;
};

obj[sym] = 0;

assert.sameValue(
  obj.propertyIsEnumerable(wrapper),
  true,
  "Returns true if symbol own enumerable property found"
);

assert.sameValue(callCount, 1, "toPrimitive method called exactly once");

reportCompare(0, 0);