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comparison: dom/browser-element/mochitest/priority/test_WebGLContextLost.html
dom/browser-element/mochitest/priority/test_WebGLContextLost.html
- changeset 2
- 7e26c7da4463
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| -1:000000000000 | 0:c532920aea8e |
|---|---|
| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <!-- | |
| 4 Test that calling setVisible('false') and then sending a low-memory | |
| 5 notification causes a WebGL context loss event. | |
| 6 --> | |
| 7 <head> | |
| 8 <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 9 <script type="application/javascript" src="../browserElementTestHelpers.js"></script> | |
| 10 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> | |
| 11 </head> | |
| 12 <body> | |
| 13 | |
| 14 <script type="application/javascript;version=1.7"> | |
| 15 "use strict"; | |
| 16 | |
| 17 SimpleTest.waitForExplicitFinish(); | |
| 18 browserElementTestHelpers.setEnabledPref(true); | |
| 19 browserElementTestHelpers.addPermission(); | |
| 20 browserElementTestHelpers.enableProcessPriorityManager(); | |
| 21 | |
| 22 function runTest() { | |
| 23 var iframe = document.createElement('iframe'); | |
| 24 iframe.setAttribute('mozbrowser', true); | |
| 25 iframe.src = 'file_WebGLContextLost.html'; | |
| 26 | |
| 27 // We use this to ensure that we don't call SimpleTest.finish() twice. | |
| 28 var finished = false; | |
| 29 function finishOnce() { | |
| 30 if (!finished) { | |
| 31 SimpleTest.finish(); | |
| 32 finished = true; | |
| 33 } | |
| 34 } | |
| 35 | |
| 36 expectMozbrowserEvent(iframe, 'error').then(function(e) { | |
| 37 if (finished) { | |
| 38 // We don't care if the frame dies after the test finishes. | |
| 39 return; | |
| 40 } | |
| 41 todo(false, "child process is crashing; this probably indicates that " + | |
| 42 "something is wrong with WebGL in child processes on your machine."); | |
| 43 is(e.detail.type, 'fatal'); | |
| 44 }).then(finishOnce); | |
| 45 | |
| 46 var childID = null; | |
| 47 expectOnlyOneProcessCreated().then(function(chid) { | |
| 48 childID = chid; | |
| 49 return Promise.all( | |
| 50 [expectPriorityChange(childID, 'FOREGROUND'), | |
| 51 expectMozbrowserEvent(iframe, 'loadend'), | |
| 52 expectMozbrowserEvent(iframe, 'showmodalprompt').then(function(e) { | |
| 53 is(e.detail.message, 'ready'); | |
| 54 }) | |
| 55 ]); | |
| 56 }).then(function() { | |
| 57 // Fire a low-memory notification once the process goes into the background | |
| 58 // due to the setVisible(false) call below. | |
| 59 expectPriorityChange(childID, 'BACKGROUND').then(function() { | |
| 60 SimpleTest.executeSoon(function() { | |
| 61 var os = SpecialPowers.Cc["@mozilla.org/observer-service;1"] | |
| 62 .getService(SpecialPowers.Ci.nsIObserverService); | |
| 63 os.notifyObservers(null, "memory-pressure", "low-memory"); | |
| 64 ok(true, 'Successfully notified observers.'); | |
| 65 }); | |
| 66 }); | |
| 67 | |
| 68 // This test isn't the only possible source of a low-memory notification; the | |
| 69 // browser can fire one whenever it likes. So it's fine if we lose the | |
| 70 // WebGL context before we fire the low-memory notification ourself. | |
| 71 | |
| 72 var p = expectMozbrowserEvent(iframe, 'showmodalprompt').then(function(e) { | |
| 73 is(e.detail.message, 'webglcontextlost'); | |
| 74 }); | |
| 75 | |
| 76 iframe.setVisible(false); | |
| 77 return p; | |
| 78 }).then(finishOnce); | |
| 79 | |
| 80 document.body.appendChild(iframe); | |
| 81 } | |
| 82 | |
| 83 addEventListener('testready', function() { | |
| 84 // At the time this test was written, webgl was blocklisted inside child | |
| 85 // processes on desktop Linux. The issue is that we spawn a child process to | |
| 86 // read driver info, but we only did this on the main prrocess. Child | |
| 87 // processes never read the driver info themselves, nor do they get it from | |
| 88 // their parent, so they refuse to start up WebGL. | |
| 89 // | |
| 90 // This isn't a problem on B2G because we force WebGL on there. But it | |
| 91 // obviously makes this test difficult. bjacob says forcing WebGL on here | |
| 92 // shouldn't hurt things, and anyway this setting mirrors what we do on B2G, | |
| 93 // which is what we're trying to test! | |
| 94 SpecialPowers.pushPrefEnv({set: [["webgl.force-enabled", true]]}, | |
| 95 runTest); | |
| 96 }); | |
| 97 | |
| 98 </script> | |
| 99 </body> | |
| 100 </html> |
