The Tor Browser / file comparison
comparison: toolkit/devtools/server/tests/unit/test_eventlooplag_actor.js
toolkit/devtools/server/tests/unit/test_eventlooplag_actor.js
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| 1 /* Any copyright is dedicated to the Public Domain. | |
| 2 http://creativecommons.org/publicdomain/zero/1.0/ */ | |
| 3 | |
| 4 /** | |
| 5 * Test the eventLoopLag actor. | |
| 6 */ | |
| 7 | |
| 8 "use strict"; | |
| 9 | |
| 10 function run_test() | |
| 11 { | |
| 12 let {EventLoopLagFront} = devtools.require("devtools/server/actors/eventlooplag"); | |
| 13 | |
| 14 DebuggerServer.init(function () { return true; }); | |
| 15 DebuggerServer.addBrowserActors(); | |
| 16 | |
| 17 // As seen in EventTracer.cpp | |
| 18 let threshold = 20; | |
| 19 let interval = 10; | |
| 20 | |
| 21 | |
| 22 let front; | |
| 23 let client = new DebuggerClient(DebuggerServer.connectPipe()); | |
| 24 | |
| 25 // Start tracking event loop lags. | |
| 26 client.connect(function () { | |
| 27 client.listTabs(function(resp) { | |
| 28 front = new EventLoopLagFront(client, resp); | |
| 29 front.start().then(success => { | |
| 30 do_check_true(success); | |
| 31 front.once("event-loop-lag", gotLagEvent); | |
| 32 do_execute_soon(lag); | |
| 33 }); | |
| 34 }); | |
| 35 }); | |
| 36 | |
| 37 // Force a lag | |
| 38 function lag() { | |
| 39 let start = new Date(); | |
| 40 let duration = threshold + interval + 1; | |
| 41 while (true) { | |
| 42 if (((new Date()) - start) > duration) { | |
| 43 break; | |
| 44 } | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 // Got a lag event. The test will time out if the actor | |
| 49 // fails to detect the lag. | |
| 50 function gotLagEvent(time) { | |
| 51 do_print("lag: " + time); | |
| 52 do_check_true(time >= threshold); | |
| 53 front.stop().then(() => { | |
| 54 finishClient(client); | |
| 55 }); | |
| 56 } | |
| 57 | |
| 58 do_test_pending(); | |
| 59 } |
