iterable-with-object-values.js

Enable keyboard shortcuts

// Copyright (C) 2015 the V8 project authors. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

esid: sec-weakset-iterable

description: >

  Returns the new WeakSet adding Object values from the iterable parameter.

info: |

  WeakSet ( [ _iterable_ ] )

  8. Repeat,

    d. Let _status_ be Completion(Call(_adder_, _set_, « _nextValue_ »)).

  WeakSet.prototype.add ( _value_ ):

  6. Append _value_ as the last element of _entries_.

features: [WeakSet]

---*/

var first = {};

var second = {};

var added = [];

var add = WeakSet.prototype.add;

WeakSet.prototype.add = function(value) {

  added.push(value);

  return add.call(this, value);

};

var s = new WeakSet([first, second]);

assert.sameValue(added.length, 2, 'Called WeakSet#add for each object');

assert.sameValue(added[0], first, 'Adds object in order - first');

assert.sameValue(added[1], second, 'Adds object in order - second');

reportCompare(0, 0);