// 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');