The Tor Browser / file comparison
comparison: js/src/jit-test/tests/basic/testWatchRecursion.js
js/src/jit-test/tests/basic/testWatchRecursion.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:21c9a6685bf1 |
|---|---|
| 1 // Test that the watch handler is not called recursively for the same object | |
| 2 // and property. | |
| 3 (function() { | |
| 4 var obj1 = {}, obj2 = {}; | |
| 5 var handler_entry_count = 0; | |
| 6 var handler_exit_count = 0; | |
| 7 | |
| 8 obj1.watch('x', handler); | |
| 9 obj1.watch('y', handler); | |
| 10 obj2.watch('x', handler); | |
| 11 obj1.x = 1; | |
| 12 assertEq(handler_entry_count, 3); | |
| 13 assertEq(handler_exit_count, 3); | |
| 14 | |
| 15 function handler(id) { | |
| 16 handler_entry_count++; | |
| 17 assertEq(handler_exit_count, 0); | |
| 18 switch (true) { | |
| 19 case this === obj1 && id === "x": | |
| 20 assertEq(handler_entry_count, 1); | |
| 21 obj2.x = 3; | |
| 22 assertEq(handler_exit_count, 2); | |
| 23 break; | |
| 24 case this === obj2 && id === "x": | |
| 25 assertEq(handler_entry_count, 2); | |
| 26 obj1.y = 4; | |
| 27 assertEq(handler_exit_count, 1); | |
| 28 break; | |
| 29 default: | |
| 30 assertEq(this, obj1); | |
| 31 assertEq(id, "y"); | |
| 32 assertEq(handler_entry_count, 3); | |
| 33 | |
| 34 // We expect no more watch handler invocations | |
| 35 obj1.x = 5; | |
| 36 obj1.y = 6; | |
| 37 obj2.x = 7; | |
| 38 assertEq(handler_exit_count, 0); | |
| 39 break; | |
| 40 } | |
| 41 ++handler_exit_count; | |
| 42 assertEq(handler_entry_count, 3); | |
| 43 } | |
| 44 })(); | |
| 45 | |
| 46 | |
| 47 // Test that run-away recursion in watch handlers is properly handled. | |
| 48 (function() { | |
| 49 var obj = {}; | |
| 50 var i = 0; | |
| 51 try { | |
| 52 handler(); | |
| 53 throw new Error("Unreachable"); | |
| 54 } catch(e) { | |
| 55 assertEq(e instanceof InternalError, true); | |
| 56 } | |
| 57 | |
| 58 function handler() { | |
| 59 var prop = "a" + ++i; | |
| 60 obj.watch(prop, handler); | |
| 61 obj[prop] = 2; | |
| 62 } | |
| 63 })(); |
