js/src/jit-test/tests/collections/for-in.js@6474c204b198 (annotated)
js/src/jit-test/tests/collections/for-in.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // for-in loops on Maps and Sets enumerate properties. |
| michael@0 | 2 | |
| michael@0 | 3 | var test = function test(obj) { |
| michael@0 | 4 | assertEq(Object.keys(obj).length, 0); |
| michael@0 | 5 | |
| michael@0 | 6 | var i = 0, v; |
| michael@0 | 7 | for (v in obj) |
| michael@0 | 8 | i++; |
| michael@0 | 9 | assertEq(i, 0); |
| michael@0 | 10 | |
| michael@0 | 11 | obj.ownProp = 1; |
| michael@0 | 12 | assertEq(Object.keys(obj).join(), "ownProp"); |
| michael@0 | 13 | |
| michael@0 | 14 | for (v in obj) |
| michael@0 | 15 | i++; |
| michael@0 | 16 | assertEq(i, 1); |
| michael@0 | 17 | assertEq(v, "ownProp"); |
| michael@0 | 18 | |
| michael@0 | 19 | delete obj.ownProp; |
| michael@0 | 20 | }; |
| michael@0 | 21 | |
| michael@0 | 22 | test(Map.prototype); |
| michael@0 | 23 | test(new Map); |
| michael@0 | 24 | test(Set.prototype); |
| michael@0 | 25 | test(new Set); |
