// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 23.1.1.1 description: > new Map calls `set` for each item on the iterable argument in order. info: > Map ( [ iterable ] ) ... 9. Repeat ... k. Let status be Call(adder, map, «k.[[value]], v.[[value]]»). ... includes: [compareArray.js] ---*/ var mapSet = Map.prototype.set; var counter = 0; var iterable = [["foo", 1], ["bar", 2]]; var results = []; var _this = []; Map.prototype.set = function(k, v) { counter++; results.push([k, v]); _this.push(this); mapSet.call(this, k, v); }; var map = new Map(iterable); assert.sameValue(counter, 2, "`Map.prototype.set` called twice."); assert(compareArray(results[0], iterable[0])); assert(compareArray(results[1], iterable[1])); assert.sameValue(_this[0], map); assert.sameValue(_this[1], map);