js/src/jit-test/tests/collections/WeakMap-clear.js@6474c204b198 (annotated)
js/src/jit-test/tests/collections/WeakMap-clear.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 | var key = {}; |
| michael@0 | 2 | var wm = WeakMap(); |
| michael@0 | 3 | |
| michael@0 | 4 | assertEq(wm.has(key), false); |
| michael@0 | 5 | // Clearing an already empty WeakMap |
| michael@0 | 6 | wm.clear(); |
| michael@0 | 7 | assertEq(wm.has(key), false); |
| michael@0 | 8 | |
| michael@0 | 9 | // Clearing a WeakMap with a live key |
| michael@0 | 10 | wm.set(key, 42); |
| michael@0 | 11 | assertEq(wm.has(key), true); |
| michael@0 | 12 | wm.clear(); |
| michael@0 | 13 | assertEq(wm.has(key), false); |
| michael@0 | 14 | |
| michael@0 | 15 | // Clearing a WeakMap with keys turned to garbage |
| michael@0 | 16 | wm.set(key, {}); |
| michael@0 | 17 | for (var i = 0; i < 10; i++) |
| michael@0 | 18 | wm.set({}, {}); |
| michael@0 | 19 | assertEq(wm.has(key), true); |
| michael@0 | 20 | wm.clear(); |
| michael@0 | 21 | assertEq(wm.has(key), false); |
| michael@0 | 22 | |
| michael@0 | 23 | // Clearing a WeakMap with keys turned to garbage and after doing a GC |
| michael@0 | 24 | wm.set(key, {}); |
| michael@0 | 25 | for (var i = 0; i < 10; i++) |
| michael@0 | 26 | wm.set({}, {}); |
| michael@0 | 27 | assertEq(wm.has(key), true); |
| michael@0 | 28 | gc(); |
| michael@0 | 29 | assertEq(wm.has(key), true); |
| michael@0 | 30 | wm.clear(); |
| michael@0 | 31 | assertEq(wm.has(key), false); |
| michael@0 | 32 | |
| michael@0 | 33 | // More testing when the key is no longer live |
| michael@0 | 34 | wm.set(key, {}); |
| michael@0 | 35 | key = null; |
| michael@0 | 36 | wm.clear(); |
| michael@0 | 37 | gc(); |
| michael@0 | 38 | var key2 = {}; |
| michael@0 | 39 | wm.set(key2, {}); |
| michael@0 | 40 | key2 = null; |
| michael@0 | 41 | gc(); |
| michael@0 | 42 | wm.clear(); |
