The Tor Browser / file comparison
comparison: browser/base/content/test/general/browser_tabopen_reflows.js
browser/base/content/test/general/browser_tabopen_reflows.js
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
equal
deleted
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replaced
| -1:000000000000 | 0:50b79cd9dfd3 |
|---|---|
| 1 /* Any copyright is dedicated to the Public Domain. | |
| 2 http://creativecommons.org/publicdomain/zero/1.0/ */ | |
| 3 | |
| 4 XPCOMUtils.defineLazyGetter(this, "docShell", () => { | |
| 5 return window.QueryInterface(Ci.nsIInterfaceRequestor) | |
| 6 .getInterface(Ci.nsIWebNavigation) | |
| 7 .QueryInterface(Ci.nsIDocShell); | |
| 8 }); | |
| 9 | |
| 10 const EXPECTED_REFLOWS = [ | |
| 11 // tabbrowser.adjustTabstrip() call after tabopen animation has finished | |
| 12 "adjustTabstrip@chrome://browser/content/tabbrowser.xml|" + | |
| 13 "_handleNewTab@chrome://browser/content/tabbrowser.xml|" + | |
| 14 "onxbltransitionend@chrome://browser/content/tabbrowser.xml|", | |
| 15 | |
| 16 // switching focus in updateCurrentBrowser() causes reflows | |
| 17 "updateCurrentBrowser@chrome://browser/content/tabbrowser.xml|" + | |
| 18 "onselect@chrome://browser/content/browser.xul|", | |
| 19 | |
| 20 // switching focus in openLinkIn() causes reflows | |
| 21 "openLinkIn@chrome://browser/content/utilityOverlay.js|" + | |
| 22 "openUILinkIn@chrome://browser/content/utilityOverlay.js|" + | |
| 23 "BrowserOpenTab@chrome://browser/content/browser.js|", | |
| 24 | |
| 25 // accessing element.scrollPosition in _fillTrailingGap() flushes layout | |
| 26 "get_scrollPosition@chrome://global/content/bindings/scrollbox.xml|" + | |
| 27 "_fillTrailingGap@chrome://browser/content/tabbrowser.xml|" + | |
| 28 "_handleNewTab@chrome://browser/content/tabbrowser.xml|" + | |
| 29 "onxbltransitionend@chrome://browser/content/tabbrowser.xml|", | |
| 30 | |
| 31 // The TabView iframe causes reflows in the parent document. | |
| 32 "iQClass_height@chrome://browser/content/tabview.js|" + | |
| 33 "GroupItem_getContentBounds@chrome://browser/content/tabview.js|" + | |
| 34 "GroupItem_shouldStack@chrome://browser/content/tabview.js|" + | |
| 35 "GroupItem_arrange@chrome://browser/content/tabview.js|" + | |
| 36 "GroupItem_add@chrome://browser/content/tabview.js|" + | |
| 37 "GroupItems_newTab@chrome://browser/content/tabview.js|" + | |
| 38 "TabItem__reconnect@chrome://browser/content/tabview.js|" + | |
| 39 "TabItem@chrome://browser/content/tabview.js|" + | |
| 40 "TabItems_link@chrome://browser/content/tabview.js|" + | |
| 41 "TabItems_init/this._eventListeners.open@chrome://browser/content/tabview.js|", | |
| 42 | |
| 43 // SessionStore.getWindowDimensions() | |
| 44 "ssi_getWindowDimension@resource:///modules/sessionstore/SessionStore.jsm|" + | |
| 45 "ssi_updateWindowFeatures/<@resource:///modules/sessionstore/SessionStore.jsm|" + | |
| 46 "ssi_updateWindowFeatures@resource:///modules/sessionstore/SessionStore.jsm|" + | |
| 47 "ssi_collectWindowData@resource:///modules/sessionstore/SessionStore.jsm|", | |
| 48 | |
| 49 // tabPreviews.capture() | |
| 50 "tabPreviews_capture@chrome://browser/content/browser.js|" + | |
| 51 "tabPreviews_handleEvent/<@chrome://browser/content/browser.js|", | |
| 52 | |
| 53 // tabPreviews.capture() | |
| 54 "tabPreviews_capture@chrome://browser/content/browser.js|" + | |
| 55 "@chrome://browser/content/browser.js|" | |
| 56 ]; | |
| 57 | |
| 58 const PREF_PRELOAD = "browser.newtab.preload"; | |
| 59 const PREF_NEWTAB_DIRECTORYSOURCE = "browser.newtabpage.directorySource"; | |
| 60 | |
| 61 /* | |
| 62 * This test ensures that there are no unexpected | |
| 63 * uninterruptible reflows when opening new tabs. | |
| 64 */ | |
| 65 function test() { | |
| 66 waitForExplicitFinish(); | |
| 67 | |
| 68 Services.prefs.setBoolPref(PREF_PRELOAD, false); | |
| 69 Services.prefs.setCharPref(PREF_NEWTAB_DIRECTORYSOURCE, "data:application/json,{}"); | |
| 70 registerCleanupFunction(() => { | |
| 71 Services.prefs.clearUserPref(PREF_PRELOAD); | |
| 72 Services.prefs.clearUserPref(PREF_NEWTAB_DIRECTORYSOURCE); | |
| 73 }); | |
| 74 | |
| 75 // Add a reflow observer and open a new tab. | |
| 76 docShell.addWeakReflowObserver(observer); | |
| 77 BrowserOpenTab(); | |
| 78 | |
| 79 // Wait until the tabopen animation has finished. | |
| 80 waitForTransitionEnd(function () { | |
| 81 // Remove reflow observer and clean up. | |
| 82 docShell.removeWeakReflowObserver(observer); | |
| 83 gBrowser.removeCurrentTab(); | |
| 84 | |
| 85 finish(); | |
| 86 }); | |
| 87 } | |
| 88 | |
| 89 let observer = { | |
| 90 reflow: function (start, end) { | |
| 91 // Gather information about the current code path. | |
| 92 let path = (new Error().stack).split("\n").slice(1).map(line => { | |
| 93 return line.replace(/:\d+:\d+$/, ""); | |
| 94 }).join("|"); | |
| 95 let pathWithLineNumbers = (new Error().stack).split("\n").slice(1).join("|"); | |
| 96 | |
| 97 // Stack trace is empty. Reflow was triggered by native code. | |
| 98 if (path === "") { | |
| 99 return; | |
| 100 } | |
| 101 | |
| 102 // Check if this is an expected reflow. | |
| 103 for (let stack of EXPECTED_REFLOWS) { | |
| 104 if (path.startsWith(stack)) { | |
| 105 ok(true, "expected uninterruptible reflow '" + stack + "'"); | |
| 106 return; | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 ok(false, "unexpected uninterruptible reflow '" + pathWithLineNumbers + "'"); | |
| 111 }, | |
| 112 | |
| 113 reflowInterruptible: function (start, end) { | |
| 114 // We're not interested in interruptible reflows. | |
| 115 }, | |
| 116 | |
| 117 QueryInterface: XPCOMUtils.generateQI([Ci.nsIReflowObserver, | |
| 118 Ci.nsISupportsWeakReference]) | |
| 119 }; | |
| 120 | |
| 121 function waitForTransitionEnd(callback) { | |
| 122 let tab = gBrowser.selectedTab; | |
| 123 tab.addEventListener("transitionend", function onEnd(event) { | |
| 124 if (event.propertyName === "max-width") { | |
| 125 tab.removeEventListener("transitionend", onEnd); | |
| 126 executeSoon(callback); | |
| 127 } | |
| 128 }); | |
| 129 } |
