| // Array.prototype.iterator is generic. |
| // That is, it can be applied to arraylike objects and strings, not just arrays. |
| |
| load(libdir + "asserts.js"); |
| load(libdir + "iteration.js"); |
| |
| function test(obj) { |
| var it = Array.prototype[Symbol.iterator].call(obj); |
| var ki = Array.prototype.keys.call(obj); |
| var ei = Array.prototype.entries.call(obj); |
| for (var i = 0; i < (obj.length >>> 0); i++) { |
| assertIteratorNext(it, obj[i]); |
| assertIteratorNext(ki, i); |
| assertIteratorNext(ei, [i, obj[i]]); |
| } |
| assertIteratorDone(it, undefined); |
| assertIteratorDone(ki, undefined); |
| assertIteratorDone(ei, undefined); |
| } |
| |
| test({length: 0}); |
| test({length: 0, 0: 'x', 1: 'y'}); |
| test({length: 2, 0: 'x', 1: 'y'}); |
| test(Object.create(['x', 'y', 'z'])); |
| test(Object.create({length: 2, 0: 'x', 1: 'y'})); |
| test(""); |
| test("ponies"); |
| |
| // Perverse length values. |
| test({length: 0x1f00000000}); |
| test({length: -0xfffffffe, 0: 'a', 1: 'b'}); |
| test({length: "011", 9: 9, 10: 10, 11: 11}); |
| test({length: -0}); |
| test({length: 2.7, 0: 0, 1: 1, 2: 2}); |
| test({length: {valueOf: function () { return 3; }}, 0: 0, 1: 1, 2: 2}); |