The Tor Browser / file comparison
comparison: js/src/tests/ecma_5/extensions/watch-inherited-property.js
js/src/tests/ecma_5/extensions/watch-inherited-property.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:0f3d7d216358 |
|---|---|
| 1 /* | |
| 2 * Any copyright is dedicated to the Public Domain. | |
| 3 * http://creativecommons.org/licenses/publicdomain/ | |
| 4 */ | |
| 5 | |
| 6 /* Create a prototype object with a setter property. */ | |
| 7 var protoSetterCount; | |
| 8 var proto = ({ set x(v) { protoSetterCount++; } }); | |
| 9 | |
| 10 /* Put a watchpoint on that setter. */ | |
| 11 var protoWatchCount; | |
| 12 proto.watch('x', function() { protoWatchCount++; }); | |
| 13 | |
| 14 /* Make an object with the above as its prototype. */ | |
| 15 function C() { } | |
| 16 C.prototype = proto; | |
| 17 var o = new C(); | |
| 18 | |
| 19 /* | |
| 20 * Set a watchpoint on the property in the inheriting object. We have | |
| 21 * defined this to mean "duplicate the property, setter and all, in the | |
| 22 * inheriting object." I don't think debugging observation mechanisms | |
| 23 * should mutate the program being run, but that's what we've got. | |
| 24 */ | |
| 25 var oWatchCount; | |
| 26 o.watch('x', function() { oWatchCount++; }); | |
| 27 | |
| 28 /* | |
| 29 * Assign to the property. This should trip the watchpoint on the inheriting object and | |
| 30 * the setter. | |
| 31 */ | |
| 32 protoSetterCount = protoWatchCount = oWatchCount = 0; | |
| 33 o.x = 1; | |
| 34 assertEq(protoWatchCount, 0); | |
| 35 assertEq(oWatchCount, 1); | |
| 36 assertEq(protoSetterCount, 1); | |
| 37 | |
| 38 reportCompare(true, true); |
