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comparison: js/src/jit-test/tests/for-of/array-iterator-generic.js
js/src/jit-test/tests/for-of/array-iterator-generic.js
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| -1:000000000000 | 0:b712ab2d74ea |
|---|---|
| 1 // Array.prototype.iterator is generic. | |
| 2 // That is, it can be applied to arraylike objects and strings, not just arrays. | |
| 3 | |
| 4 load(libdir + "asserts.js"); | |
| 5 load(libdir + "iteration.js"); | |
| 6 | |
| 7 function test(obj) { | |
| 8 var it = Array.prototype[std_iterator].call(obj); | |
| 9 var ki = Array.prototype.keys.call(obj); | |
| 10 var ei = Array.prototype.entries.call(obj); | |
| 11 for (var i = 0; i < (obj.length >>> 0); i++) { | |
| 12 assertIteratorNext(it, obj[i]); | |
| 13 assertIteratorNext(ki, i); | |
| 14 assertIteratorNext(ei, [i, obj[i]]); | |
| 15 } | |
| 16 assertIteratorDone(it, undefined); | |
| 17 assertIteratorDone(ki, undefined); | |
| 18 assertIteratorDone(ei, undefined); | |
| 19 } | |
| 20 | |
| 21 test({length: 0}); | |
| 22 test({length: 0, 0: 'x', 1: 'y'}); | |
| 23 test({length: 2, 0: 'x', 1: 'y'}); | |
| 24 test(Object.create(['x', 'y', 'z'])); | |
| 25 test(Object.create({length: 2, 0: 'x', 1: 'y'})); | |
| 26 test(""); | |
| 27 test("ponies"); | |
| 28 | |
| 29 // Perverse length values. | |
| 30 test({length: 0x1f00000000}); | |
| 31 test({length: -0xfffffffe, 0: 'a', 1: 'b'}); | |
| 32 test({length: "011", 9: 9, 10: 10, 11: 11}); | |
| 33 test({length: -0}); | |
| 34 test({length: 2.7, 0: 0, 1: 1, 2: 2}); | |
| 35 test({length: {valueOf: function () { return 3; }}, 0: 0, 1: 1, 2: 2}); |
