The Tor Browser / file comparison
comparison: modules/libpref/test/unit/test_warnings.js
modules/libpref/test/unit/test_warnings.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:238b8893745b |
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 Cu.import("resource://gre/modules/Promise.jsm"); | |
| 6 | |
| 7 let cs = Cc["@mozilla.org/consoleservice;1"]. | |
| 8 getService(Ci.nsIConsoleService); | |
| 9 let ps = Cc["@mozilla.org/preferences-service;1"]. | |
| 10 getService(Ci.nsIPrefService); | |
| 11 | |
| 12 function makeBuffer(length) { | |
| 13 return new Array(length + 1).join('x'); | |
| 14 } | |
| 15 | |
| 16 /** | |
| 17 * @resolves |true| if execution proceeded without warning, | |
| 18 * |false| if there was a warning. | |
| 19 */ | |
| 20 function checkWarning(pref, buffer) { | |
| 21 let deferred = Promise.defer(); | |
| 22 let complete = false; | |
| 23 let listener = { | |
| 24 observe: function(event) { | |
| 25 let message = event.message; | |
| 26 if (!(message.startsWith("Warning: attempting to write") | |
| 27 && message.contains(pref))) { | |
| 28 return; | |
| 29 } | |
| 30 if (complete) { | |
| 31 return; | |
| 32 } | |
| 33 complete = true; | |
| 34 do_print("Warning while setting " + pref); | |
| 35 cs.unregisterListener(listener); | |
| 36 deferred.resolve(true); | |
| 37 } | |
| 38 }; | |
| 39 do_timeout(1000, function() { | |
| 40 if (complete) { | |
| 41 return; | |
| 42 } | |
| 43 complete = true; | |
| 44 do_print("No warning while setting " + pref); | |
| 45 cs.unregisterListener(listener); | |
| 46 deferred.resolve(false); | |
| 47 }); | |
| 48 cs.registerListener(listener); | |
| 49 ps.setCharPref(pref, buffer); | |
| 50 return deferred.promise; | |
| 51 } | |
| 52 | |
| 53 function run_test() { | |
| 54 run_next_test(); | |
| 55 } | |
| 56 | |
| 57 add_task(function() { | |
| 58 // Simple change, shouldn't cause a warning | |
| 59 do_print("Checking that a simple change doesn't cause a warning"); | |
| 60 let buf = makeBuffer(100); | |
| 61 let warned = yield checkWarning("string.accept", buf); | |
| 62 do_check_false(warned); | |
| 63 | |
| 64 // Large change, should cause a warning | |
| 65 do_print("Checking that a large change causes a warning"); | |
| 66 buf = makeBuffer(32 * 1024); | |
| 67 warned = yield checkWarning("string.warn", buf); | |
| 68 do_check_true(warned); | |
| 69 }); |
