The Tor Browser: layout/tools/reftest/reftest-content.js@8bccb770b82d (annotated)

layout/tools/reftest/reftest-content.js@8bccb770b82d (annotated)

layout/tools/reftest/reftest-content.js

Wed, 31 Dec 2014 13:27:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 13:27:57 +0100
branch: TOR_BUG_3246
changeset 6: 8bccb770b82d
permissions: -rw-r--r--

Ignore runtime configuration files generated during quality assurance.

 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- /
 /* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 const CC = Components.classes;
 const CI = Components.interfaces;
 const CR = Components.results;
 const CU = Components.utils;
 const XHTML_NS = "http://www.w3.org/1999/xhtml";
 const DEBUG_CONTRACTID = "@mozilla.org/xpcom/debug;1";
 const PRINTSETTINGS_CONTRACTID = "@mozilla.org/gfx/printsettings-service;1";
 const ENVIRONMENT_CONTRACTID = "@mozilla.org/process/environment;1";
 // "<!--CLEAR-->"
 const BLANK_URL_FOR_CLEARING = "data:text/html;charset=UTF-8,%3C%21%2D%2DCLEAR%2D%2D%3E";
 CU.import("resource://gre/modules/Timer.jsm");
 CU.import("resource://gre/modules/AsyncSpellCheckTestHelper.jsm");
 var gBrowserIsRemote;
 var gHaveCanvasSnapshot = false;
 // Plugin layers can be updated asynchronously, so to make sure that all
 // layer surfaces have the right content, we need to listen for explicit
 // "MozPaintWait" and "MozPaintWaitFinished" events that signal when it's OK
 // to take snapshots. We cannot take a snapshot while the number of
 // "MozPaintWait" events fired exceeds the number of "MozPaintWaitFinished"
 // events fired. We count the number of such excess events here. When
 // the counter reaches zero we call gExplicitPendingPaintsCompleteHook.
 var gExplicitPendingPaintCount = 0;
 var gExplicitPendingPaintsCompleteHook;
 var gCurrentURL;
 var gCurrentTestType;
 var gTimeoutHook = null;
 var gFailureTimeout = null;
 var gFailureReason;
 var gAssertionCount = 0;
 var gDebug;
 var gVerbose = false;
 var gCurrentTestStartTime;
 var gClearingForAssertionCheck = false;
 const TYPE_LOAD = 'load';  // test without a reference (just test that it does
                            // not assert, crash, hang, or leak)
 const TYPE_SCRIPT = 'script'; // test contains individual test results
 function markupDocumentViewer() {
     return docShell.contentViewer.QueryInterface(CI.nsIMarkupDocumentViewer);
 }
 function webNavigation() {
     return docShell.QueryInterface(CI.nsIWebNavigation);
 }
 function windowUtils() {
     return content.QueryInterface(CI.nsIInterfaceRequestor)
                   .getInterface(CI.nsIDOMWindowUtils);
 }
 function IDForEventTarget(event)
 {
     try {
         return "'" + event.target.getAttribute('id') + "'";
     } catch (ex) {
         return "<unknown>";
     }
 }
 function PaintWaitListener(event)
 {
     LogInfo("MozPaintWait received for ID " + IDForEventTarget(event));
     gExplicitPendingPaintCount++;
 }
 function PaintWaitFinishedListener(event)
 {
     LogInfo("MozPaintWaitFinished received for ID " + IDForEventTarget(event));
     gExplicitPendingPaintCount--;
     if (gExplicitPendingPaintCount < 0) {
         LogWarning("Underrun in gExplicitPendingPaintCount\n");
         gExplicitPendingPaintCount = 0;
     }
     if (gExplicitPendingPaintCount == 0 &&
         gExplicitPendingPaintsCompleteHook) {
         gExplicitPendingPaintsCompleteHook();
     }
 }
 function OnInitialLoad()
 {
 #ifndef REFTEST_B2G
     removeEventListener("load", OnInitialLoad, true);
 #endif
     gDebug = CC[DEBUG_CONTRACTID].getService(CI.nsIDebug2);
     var env = CC[ENVIRONMENT_CONTRACTID].getService(CI.nsIEnvironment);
     gVerbose = !!env.get("MOZ_REFTEST_VERBOSE");
     RegisterMessageListeners();
     var initInfo = SendContentReady();
     gBrowserIsRemote = initInfo.remote;
     addEventListener("load", OnDocumentLoad, true);
     addEventListener("MozPaintWait", PaintWaitListener, true);
     addEventListener("MozPaintWaitFinished", PaintWaitFinishedListener, true);
     LogWarning("Using browser remote="+ gBrowserIsRemote +"\n");
 }
 function StartTestURI(type, uri, timeout)
 {
     // Reset gExplicitPendingPaintCount in case there was a timeout or
     // the count is out of sync for some other reason
     if (gExplicitPendingPaintCount != 0) {
         LogWarning("Resetting gExplicitPendingPaintCount to zero (currently " +
                    gExplicitPendingPaintCount + "\n");
         gExplicitPendingPaintCount = 0;
     }
     gCurrentTestType = type;
     gCurrentURL = uri;
     gCurrentTestStartTime = Date.now();
     if (gFailureTimeout != null) {
         SendException("program error managing timeouts\n");
     }
     gFailureTimeout = setTimeout(LoadFailed, timeout);
     LoadURI(gCurrentURL);
 }
 function setupZoom(contentRootElement) {
     if (!contentRootElement || !contentRootElement.hasAttribute('reftest-zoom'))
         return;
     markupDocumentViewer().fullZoom =
         contentRootElement.getAttribute('reftest-zoom');
 }
 function resetZoom() {
     markupDocumentViewer().fullZoom = 1.0;
 }
 function doPrintMode(contentRootElement) {
 #if REFTEST_B2G
     // nsIPrintSettings not available in B2G
     return false;
 #else
     // use getAttribute because className works differently in HTML and SVG
     return contentRootElement &&
            contentRootElement.hasAttribute('class') &&
            contentRootElement.getAttribute('class').split(/\s+/)
                              .indexOf("reftest-print") != -1;
 #endif
 }
 function setupPrintMode() {
    var PSSVC =
        CC[PRINTSETTINGS_CONTRACTID].getService(CI.nsIPrintSettingsService);
    var ps = PSSVC.newPrintSettings;
    ps.paperWidth = 5;
    ps.paperHeight = 3;
    // Override any os-specific unwriteable margins
    ps.unwriteableMarginTop = 0;
    ps.unwriteableMarginLeft = 0;
    ps.unwriteableMarginBottom = 0;
    ps.unwriteableMarginRight = 0;
    ps.headerStrLeft = "";
    ps.headerStrCenter = "";
    ps.headerStrRight = "";
    ps.footerStrLeft = "";
    ps.footerStrCenter = "";
    ps.footerStrRight = "";
    docShell.contentViewer.setPageMode(true, ps);
 }
 function attrOrDefault(element, attr, def) {
     return element.hasAttribute(attr) ? Number(element.getAttribute(attr)) : def;
 }
 function setupViewport(contentRootElement) {
     if (!contentRootElement) {
         return;
     }
     var vw = attrOrDefault(contentRootElement, "reftest-viewport-w", 0);
     var vh = attrOrDefault(contentRootElement, "reftest-viewport-h", 0);
     if (vw !== 0 || vh !== 0) {
         LogInfo("Setting viewport to <w="+ vw +", h="+ vh +">");
         windowUtils().setCSSViewport(vw, vh);
     }
     // XXX support resolution when needed
     // XXX support viewconfig when needed
 }
 function setupDisplayport(contentRootElement) {
     if (!contentRootElement) {
         return;
     }
     function setupDisplayportForElement(element) {
         var dpw = attrOrDefault(element, "reftest-displayport-w", 0);
         var dph = attrOrDefault(element, "reftest-displayport-h", 0);
         var dpx = attrOrDefault(element, "reftest-displayport-x", 0);
         var dpy = attrOrDefault(element, "reftest-displayport-y", 0);
         if (dpw !== 0 || dph !== 0 || dpx != 0 || dpy != 0) {
             LogInfo("Setting displayport to <x="+ dpx +", y="+ dpy +", w="+ dpw +", h="+ dph +">");
             windowUtils().setDisplayPortForElement(dpx, dpy, dpw, dph, element, 1);
         }
     }
     function setupDisplayportForElementSubtree(element) {
         setupDisplayportForElement(element);
         for (var c = element.firstElementChild; c; c = c.nextElementSibling) {
             setupDisplayportForElementSubtree(c);
         }
     }
     if (contentRootElement.hasAttribute("reftest-async-scroll")) {
         SendEnableAsyncScroll();
         setupDisplayportForElementSubtree(contentRootElement);
     } else {
         setupDisplayportForElement(contentRootElement);
     }
 }
 function setupAsyncScrollOffsets(options) {
     var currentDoc = content.document;
     var contentRootElement = currentDoc ? currentDoc.documentElement : null;
     if (!contentRootElement) {
         return;
     }
     function setupAsyncScrollOffsetsForElement(element) {
         var sx = attrOrDefault(element, "reftest-async-scroll-x", 0);
         var sy = attrOrDefault(element, "reftest-async-scroll-y", 0);
         if (sx != 0 || sy != 0) {
             try {
                 // This might fail when called from RecordResult since layers
                 // may not have been constructed yet
                 windowUtils().setAsyncScrollOffset(element, sx, sy);
             } catch (e) {
                 if (!options.allowFailure) {
                     throw e;
                 }
             }
         }
     }
     function setupAsyncScrollOffsetsForElementSubtree(element) {
         setupAsyncScrollOffsetsForElement(element);
         for (var c = element.firstElementChild; c; c = c.nextElementSibling) {
             setupAsyncScrollOffsetsForElementSubtree(c);
         }
     }
     var asyncScroll = contentRootElement.hasAttribute("reftest-async-scroll");
     if (asyncScroll) {
         setupAsyncScrollOffsetsForElementSubtree(contentRootElement);
     }
 }
 function resetDisplayportAndViewport() {
     // XXX currently the displayport configuration lives on the
     // presshell and so is "reset" on nav when we get a new presshell.
 }
 function shouldWaitForExplicitPaintWaiters() {
     return gExplicitPendingPaintCount > 0;
 }
 function shouldWaitForPendingPaints() {
     // if gHaveCanvasSnapshot is false, we're not taking snapshots so
     // there is no need to wait for pending paints to be flushed.
     return gHaveCanvasSnapshot && windowUtils().isMozAfterPaintPending;
 }
 function shouldWaitForReftestWaitRemoval(contentRootElement) {
     // use getAttribute because className works differently in HTML and SVG
     return contentRootElement &&
            contentRootElement.hasAttribute('class') &&
            contentRootElement.getAttribute('class').split(/\s+/)
                              .indexOf("reftest-wait") != -1;
 }
 function shouldSnapshotWholePage(contentRootElement) {
     // use getAttribute because className works differently in HTML and SVG
     return contentRootElement &&
            contentRootElement.hasAttribute('class') &&
            contentRootElement.getAttribute('class').split(/\s+/)
                              .indexOf("reftest-snapshot-all") != -1;
 }
 function getNoPaintElements(contentRootElement) {
   return contentRootElement.getElementsByClassName('reftest-no-paint');
 }
 // Initial state. When the document has loaded and all MozAfterPaint events and
 // all explicit paint waits are flushed, we can fire the MozReftestInvalidate
 // event and move to the next state.
 const STATE_WAITING_TO_FIRE_INVALIDATE_EVENT = 0;
 // When reftest-wait has been removed from the root element, we can move to the
 // next state.
 const STATE_WAITING_FOR_REFTEST_WAIT_REMOVAL = 1;
 // When spell checking is done on all spell-checked elements, we can move to the
 // next state.
 const STATE_WAITING_FOR_SPELL_CHECKS = 2;
 // When all MozAfterPaint events and all explicit paint waits are flushed, we're
 // done and can move to the COMPLETED state.
 const STATE_WAITING_TO_FINISH = 3;
 const STATE_COMPLETED = 4;
 function FlushRendering() {
     var anyPendingPaintsGeneratedInDescendants = false;
     function flushWindow(win) {
         var utils = win.QueryInterface(CI.nsIInterfaceRequestor)
                     .getInterface(CI.nsIDOMWindowUtils);
         var afterPaintWasPending = utils.isMozAfterPaintPending;
         if (win.document.documentElement) {
             try {
                 // Flush pending restyles and reflows for this window
                 win.document.documentElement.getBoundingClientRect();
             } catch (e) {
                 LogWarning("flushWindow failed: " + e + "\n");
             }
         }
         if (!afterPaintWasPending && utils.isMozAfterPaintPending) {
             LogInfo("FlushRendering generated paint for window " + win.location.href);
             anyPendingPaintsGeneratedInDescendants = true;
         }
         for (var i = 0; i < win.frames.length; ++i) {
             flushWindow(win.frames[i]);
         }
     }
     flushWindow(content);
     if (anyPendingPaintsGeneratedInDescendants &&
         !windowUtils().isMozAfterPaintPending) {
         LogWarning("Internal error: descendant frame generated a MozAfterPaint event, but the root document doesn't have one!");
     }
 }
 function WaitForTestEnd(contentRootElement, inPrintMode, spellCheckedElements) {
     var stopAfterPaintReceived = false;
     var currentDoc = content.document;
     var state = STATE_WAITING_TO_FIRE_INVALIDATE_EVENT;
     function AfterPaintListener(event) {
         LogInfo("AfterPaintListener in " + event.target.document.location.href);
         if (event.target.document != currentDoc) {
             // ignore paint events for subframes or old documents in the window.
             // Invalidation in subframes will cause invalidation in the toplevel document anyway.
             return;
         }
         SendUpdateCanvasForEvent(event, contentRootElement);
         // These events are fired immediately after a paint. Don't
         // confuse ourselves by firing synchronously if we triggered the
         // paint ourselves.
         setTimeout(MakeProgress, 0);
     }
     function AttrModifiedListener() {
         LogInfo("AttrModifiedListener fired");
         // Wait for the next return-to-event-loop before continuing --- for
         // example, the attribute may have been modified in an subdocument's
         // load event handler, in which case we need load event processing
         // to complete and unsuppress painting before we check isMozAfterPaintPending.
         setTimeout(MakeProgress, 0);
     }
     function ExplicitPaintsCompleteListener() {
         LogInfo("ExplicitPaintsCompleteListener fired");
         // Since this can fire while painting, don't confuse ourselves by
         // firing synchronously. It's fine to do this asynchronously.
         setTimeout(MakeProgress, 0);
     }
     function RemoveListeners() {
         // OK, we can end the test now.
         removeEventListener("MozAfterPaint", AfterPaintListener, false);
         if (contentRootElement) {
             contentRootElement.removeEventListener("DOMAttrModified", AttrModifiedListener, false);
         }
         gExplicitPendingPaintsCompleteHook = null;
         gTimeoutHook = null;
         // Make sure we're in the COMPLETED state just in case
         // (this may be called via the test-timeout hook)
         state = STATE_COMPLETED;
     }
     // Everything that could cause shouldWaitForXXX() to
     // change from returning true to returning false is monitored via some kind
     // of event listener which eventually calls this function.
     function MakeProgress() {
         if (state >= STATE_COMPLETED) {
             LogInfo("MakeProgress: STATE_COMPLETED");
             return;
         }
         FlushRendering();
         switch (state) {
         case STATE_WAITING_TO_FIRE_INVALIDATE_EVENT: {
             LogInfo("MakeProgress: STATE_WAITING_TO_FIRE_INVALIDATE_EVENT");
             if (shouldWaitForExplicitPaintWaiters() || shouldWaitForPendingPaints()) {
                 gFailureReason = "timed out waiting for pending paint count to reach zero";
                 if (shouldWaitForExplicitPaintWaiters()) {
                     gFailureReason += " (waiting for MozPaintWaitFinished)";
                     LogInfo("MakeProgress: waiting for MozPaintWaitFinished");
                 }
                 if (shouldWaitForPendingPaints()) {
                     gFailureReason += " (waiting for MozAfterPaint)";
                     LogInfo("MakeProgress: waiting for MozAfterPaint");
                 }
                 return;
             }
             state = STATE_WAITING_FOR_REFTEST_WAIT_REMOVAL;
             var hasReftestWait = shouldWaitForReftestWaitRemoval(contentRootElement);
             // Notify the test document that now is a good time to test some invalidation
             LogInfo("MakeProgress: dispatching MozReftestInvalidate");
             if (contentRootElement) {
                 var elements = getNoPaintElements(contentRootElement);
                 for (var i = 0; i < elements.length; ++i) {
                   windowUtils().checkAndClearPaintedState(elements[i]);
                 }
                 var notification = content.document.createEvent("Events");
                 notification.initEvent("MozReftestInvalidate", true, false);
                 contentRootElement.dispatchEvent(notification);
             }
             if (!inPrintMode && doPrintMode(contentRootElement)) {
                 LogInfo("MakeProgress: setting up print mode");
                 setupPrintMode();
             }
             if (hasReftestWait && !shouldWaitForReftestWaitRemoval(contentRootElement)) {
                 // MozReftestInvalidate handler removed reftest-wait.
                 // We expect something to have been invalidated...
                 FlushRendering();
                 if (!shouldWaitForPendingPaints() && !shouldWaitForExplicitPaintWaiters()) {
                     LogWarning("MozInvalidateEvent didn't invalidate");
                 }
             }
             // Try next state
             MakeProgress();
             return;
         }
         case STATE_WAITING_FOR_REFTEST_WAIT_REMOVAL:
             LogInfo("MakeProgress: STATE_WAITING_FOR_REFTEST_WAIT_REMOVAL");
             if (shouldWaitForReftestWaitRemoval(contentRootElement)) {
                 gFailureReason = "timed out waiting for reftest-wait to be removed";
                 LogInfo("MakeProgress: waiting for reftest-wait to be removed");
                 return;
             }
             // Try next state
             state = STATE_WAITING_FOR_SPELL_CHECKS;
             MakeProgress();
             return;
         case STATE_WAITING_FOR_SPELL_CHECKS:
             LogInfo("MakeProgress: STATE_WAITING_FOR_SPELL_CHECKS");
             if (numPendingSpellChecks) {
                 gFailureReason = "timed out waiting for spell checks to end";
                 LogInfo("MakeProgress: waiting for spell checks to end");
                 return;
             }
             state = STATE_WAITING_TO_FINISH;
             // Try next state
             MakeProgress();
             return;
         case STATE_WAITING_TO_FINISH:
             LogInfo("MakeProgress: STATE_WAITING_TO_FINISH");
             if (shouldWaitForExplicitPaintWaiters() || shouldWaitForPendingPaints()) {
                 gFailureReason = "timed out waiting for pending paint count to " +
                     "reach zero (after reftest-wait removed and switch to print mode)";
                 if (shouldWaitForExplicitPaintWaiters()) {
                     gFailureReason += " (waiting for MozPaintWaitFinished)";
                     LogInfo("MakeProgress: waiting for MozPaintWaitFinished");
                 }
                 if (shouldWaitForPendingPaints()) {
                     gFailureReason += " (waiting for MozAfterPaint)";
                     LogInfo("MakeProgress: waiting for MozAfterPaint");
                 }
                 return;
             }
             if (contentRootElement) {
               var elements = getNoPaintElements(contentRootElement);
               for (var i = 0; i < elements.length; ++i) {
                   if (windowUtils().checkAndClearPaintedState(elements[i])) {
                       SendFailedNoPaint();
                   }
               }
             }
             LogInfo("MakeProgress: Completed");
             state = STATE_COMPLETED;
             gFailureReason = "timed out while taking snapshot (bug in harness?)";
             RemoveListeners();
             CheckForProcessCrashExpectation();
             setTimeout(RecordResult, 0);
             return;
         }
     }
     LogInfo("WaitForTestEnd: Adding listeners");
     addEventListener("MozAfterPaint", AfterPaintListener, false);
     // If contentRootElement is null then shouldWaitForReftestWaitRemoval will
     // always return false so we don't need a listener anyway
     if (contentRootElement) {
       contentRootElement.addEventListener("DOMAttrModified", AttrModifiedListener, false);
     }
     gExplicitPendingPaintsCompleteHook = ExplicitPaintsCompleteListener;
     gTimeoutHook = RemoveListeners;
     // Listen for spell checks on spell-checked elements.
     var numPendingSpellChecks = spellCheckedElements.length;
     function decNumPendingSpellChecks() {
         --numPendingSpellChecks;
         MakeProgress();
     }
     for (let editable of spellCheckedElements) {
         try {
             onSpellCheck(editable, decNumPendingSpellChecks);
         } catch (err) {
             // The element may not have an editor, so ignore it.
             setTimeout(decNumPendingSpellChecks, 0);
         }
     }
     // Take a full snapshot now that all our listeners are set up. This
     // ensures it's impossible for us to miss updates between taking the snapshot
     // and adding our listeners.
     SendInitCanvasWithSnapshot();
     MakeProgress();
 }
 function OnDocumentLoad(event)
 {
     var currentDoc = content.document;
     if (event.target != currentDoc)
         // Ignore load events for subframes.
         return;
     if (gClearingForAssertionCheck &&
         currentDoc.location.href == BLANK_URL_FOR_CLEARING) {
         DoAssertionCheck();
         return;
     }
     if (currentDoc.location.href != gCurrentURL) {
         LogInfo("OnDocumentLoad fired for previous document");
         // Ignore load events for previous documents.
         return;
     }
     // Collect all editable, spell-checked elements.  It may be the case that
     // not all the elements that match this selector will be spell checked: for
     // example, a textarea without a spellcheck attribute may have a parent with
     // spellcheck=false, or script may set spellcheck=false on an element whose
     // markup sets it to true.  But that's OK since onSpellCheck detects the
     // absence of spell checking, too.
     var querySelector =
         '*[class~="spell-checked"],' +
         'textarea:not([spellcheck="false"]),' +
         'input[spellcheck]:-moz-any([spellcheck=""],[spellcheck="true"]),' +
         '*[contenteditable]:-moz-any([contenteditable=""],[contenteditable="true"])';
     var spellCheckedElements = currentDoc.querySelectorAll(querySelector);
     var contentRootElement = currentDoc ? currentDoc.documentElement : null;
     currentDoc = null;
     setupZoom(contentRootElement);
     setupViewport(contentRootElement);
     setupDisplayport(contentRootElement);
     var inPrintMode = false;
     function AfterOnLoadScripts() {
         // Regrab the root element, because the document may have changed.
         var contentRootElement =
           content.document ? content.document.documentElement : null;
         // Flush the document in case it got modified in a load event handler.
         FlushRendering();
         // Take a snapshot now. We need to do this before we check whether
         // we should wait, since this might trigger dispatching of
         // MozPaintWait events and make shouldWaitForExplicitPaintWaiters() true
         // below.
         var painted = SendInitCanvasWithSnapshot();
         if (shouldWaitForExplicitPaintWaiters() ||
             (!inPrintMode && doPrintMode(contentRootElement)) ||
             // If we didn't force a paint above, in
             // InitCurrentCanvasWithSnapshot, so we should wait for a
             // paint before we consider them done.
             !painted) {
             LogInfo("AfterOnLoadScripts belatedly entering WaitForTestEnd");
             // Go into reftest-wait mode belatedly.
             WaitForTestEnd(contentRootElement, inPrintMode, []);
         } else {
             CheckForProcessCrashExpectation();
             RecordResult();
         }
     }
     if (shouldWaitForReftestWaitRemoval(contentRootElement) ||
         shouldWaitForExplicitPaintWaiters() ||
         spellCheckedElements.length) {
         // Go into reftest-wait mode immediately after painting has been
         // unsuppressed, after the onload event has finished dispatching.
         gFailureReason = "timed out waiting for test to complete (trying to get into WaitForTestEnd)";
         LogInfo("OnDocumentLoad triggering WaitForTestEnd");
         setTimeout(function () { WaitForTestEnd(contentRootElement, inPrintMode, spellCheckedElements); }, 0);
     } else {
         if (doPrintMode(contentRootElement)) {
             LogInfo("OnDocumentLoad setting up print mode");
             setupPrintMode();
             inPrintMode = true;
         }
         // Since we can't use a bubbling-phase load listener from chrome,
         // this is a capturing phase listener.  So do setTimeout twice, the
         // first to get us after the onload has fired in the content, and
         // the second to get us after any setTimeout(foo, 0) in the content.
         gFailureReason = "timed out waiting for test to complete (waiting for onload scripts to complete)";
         LogInfo("OnDocumentLoad triggering AfterOnLoadScripts");
         setTimeout(function () { setTimeout(AfterOnLoadScripts, 0); }, 0);
     }
 }
 function CheckForProcessCrashExpectation()
 {
     var contentRootElement = content.document.documentElement;
     if (contentRootElement &&
         contentRootElement.hasAttribute('class') &&
         contentRootElement.getAttribute('class').split(/\s+/)
                           .indexOf("reftest-expect-process-crash") != -1) {
         SendExpectProcessCrash();
     }
 }
 function RecordResult()
 {
     LogInfo("RecordResult fired");
     var currentTestRunTime = Date.now() - gCurrentTestStartTime;
     clearTimeout(gFailureTimeout);
     gFailureReason = null;
     gFailureTimeout = null;
     if (gCurrentTestType == TYPE_SCRIPT) {
         var error = '';
         var testwindow = content;
         if (testwindow.wrappedJSObject)
             testwindow = testwindow.wrappedJSObject;
         var testcases;
         if (!testwindow.getTestCases || typeof testwindow.getTestCases != "function") {
             // Force an unexpected failure to alert the test author to fix the test.
             error = "test must provide a function getTestCases(). (SCRIPT)\n";
         }
         else if (!(testcases = testwindow.getTestCases())) {
             // Force an unexpected failure to alert the test author to fix the test.
             error = "test's getTestCases() must return an Array-like Object. (SCRIPT)\n";
         }
         else if (testcases.length == 0) {
             // This failure may be due to a JavaScript Engine bug causing
             // early termination of the test. If we do not allow silent
             // failure, the driver will report an error.
         }
         var results = [ ];
         if (!error) {
             // FIXME/bug 618176: temporary workaround
             for (var i = 0; i < testcases.length; ++i) {
                 var test = testcases[i];
                 results.push({ passed: test.testPassed(),
                                description: test.testDescription() });
             }
             //results = testcases.map(function(test) {
             //        return { passed: test.testPassed(),
             //                 description: test.testDescription() };
         }
         SendScriptResults(currentTestRunTime, error, results);
         FinishTestItem();
         return;
     }
     // Setup async scroll offsets now in case SynchronizeForSnapshot is not
     // called (due to reftest-no-sync-layers being supplied).
     setupAsyncScrollOffsets({allowFailure:true});
     SendTestDone(currentTestRunTime);
     FinishTestItem();
 }
 function LoadFailed()
 {
     if (gTimeoutHook) {
         gTimeoutHook();
     }
     gFailureTimeout = null;
     SendFailedLoad(gFailureReason);
 }
 function FinishTestItem()
 {
     gHaveCanvasSnapshot = false;
 }
 function DoAssertionCheck()
 {
     gClearingForAssertionCheck = false;
     var numAsserts = 0;
     if (gDebug.isDebugBuild) {
         var newAssertionCount = gDebug.assertionCount;
         numAsserts = newAssertionCount - gAssertionCount;
         gAssertionCount = newAssertionCount;
     }
     SendAssertionCount(numAsserts);
 }
 function LoadURI(uri)
 {
     var flags = webNavigation().LOAD_FLAGS_NONE;
     webNavigation().loadURI(uri, flags, null, null, null);
 }
 function LogWarning(str)
 {
     if (gVerbose) {
         sendSyncMessage("reftest:Log", { type: "warning", msg: str });
     } else {
         sendAsyncMessage("reftest:Log", { type: "warning", msg: str });
     }
 }
 function LogInfo(str)
 {
     if (gVerbose) {
         sendSyncMessage("reftest:Log", { type: "info", msg: str });
     } else {
         sendAsyncMessage("reftest:Log", { type: "info", msg: str });
     }
 }
 const SYNC_DEFAULT = 0x0;
 const SYNC_ALLOW_DISABLE = 0x1;
 function SynchronizeForSnapshot(flags)
 {
     if (gCurrentTestType == TYPE_SCRIPT ||
         gCurrentTestType == TYPE_LOAD) {
         // Script tests or load-only tests do not need any snapshotting
         return;
     }
     if (flags & SYNC_ALLOW_DISABLE) {
         var docElt = content.document.documentElement;
         if (docElt && docElt.hasAttribute("reftest-no-sync-layers")) {
             LogInfo("Test file chose to skip SynchronizeForSnapshot");
             return;
         }
     }
     var dummyCanvas = content.document.createElementNS(XHTML_NS, "canvas");
     dummyCanvas.setAttribute("width", 1);
     dummyCanvas.setAttribute("height", 1);
     var ctx = dummyCanvas.getContext("2d");
     var flags = ctx.DRAWWINDOW_DRAW_CARET | ctx.DRAWWINDOW_DRAW_VIEW | ctx.DRAWWINDOW_USE_WIDGET_LAYERS;
     ctx.drawWindow(content, 0, 0, 1, 1, "rgb(255,255,255)", flags);
     // Setup async scroll offsets now, because any scrollable layers should
     // have had their AsyncPanZoomControllers created.
     setupAsyncScrollOffsets({allowFailure:false});
 }
 function RegisterMessageListeners()
 {
     addMessageListener(
         "reftest:Clear",
         function (m) { RecvClear() }
     );
     addMessageListener(
         "reftest:LoadScriptTest",
         function (m) { RecvLoadScriptTest(m.json.uri, m.json.timeout); }
     );
     addMessageListener(
         "reftest:LoadTest",
         function (m) { RecvLoadTest(m.json.type, m.json.uri, m.json.timeout); }
     );
     addMessageListener(
         "reftest:ResetRenderingState",
         function (m) { RecvResetRenderingState(); }
     );
 }
 function RecvClear()
 {
     gClearingForAssertionCheck = true;
     LoadURI(BLANK_URL_FOR_CLEARING);
 }
 function RecvLoadTest(type, uri, timeout)
 {
     StartTestURI(type, uri, timeout);
 }
 function RecvLoadScriptTest(uri, timeout)
 {
     StartTestURI(TYPE_SCRIPT, uri, timeout);
 }
 function RecvResetRenderingState()
 {
     resetZoom();
     resetDisplayportAndViewport();
 }
 function SendAssertionCount(numAssertions)
 {
     sendAsyncMessage("reftest:AssertionCount", { count: numAssertions });
 }
 function SendContentReady()
 {
     return sendSyncMessage("reftest:ContentReady")[0];
 }
 function SendException(what)
 {
     sendAsyncMessage("reftest:Exception", { what: what });
 }
 function SendFailedLoad(why)
 {
     sendAsyncMessage("reftest:FailedLoad", { why: why });
 }
 function SendFailedNoPaint()
 {
     sendAsyncMessage("reftest:FailedNoPaint");
 }
 function SendEnableAsyncScroll()
 {
     sendAsyncMessage("reftest:EnableAsyncScroll");
 }
 // Return true if a snapshot was taken.
 function SendInitCanvasWithSnapshot()
 {
     // If we're in the same process as the top-level XUL window, then
     // drawing that window will also update our layers, so no
     // synchronization is needed.
     //
     // NB: this is a test-harness optimization only, it must not
     // affect the validity of the tests.
     if (gBrowserIsRemote) {
         SynchronizeForSnapshot(SYNC_DEFAULT);
     }
     // For in-process browser, we have to make a synchronous request
     // here to make the above optimization valid, so that MozWaitPaint
     // events dispatched (synchronously) during painting are received
     // before we check the paint-wait counter.  For out-of-process
     // browser though, it doesn't wrt correctness whether this request
     // is sync or async.
     var ret = sendSyncMessage("reftest:InitCanvasWithSnapshot")[0];
     gHaveCanvasSnapshot = ret.painted;
     return ret.painted;
 }
 function SendScriptResults(runtimeMs, error, results)
 {
     sendAsyncMessage("reftest:ScriptResults",
                      { runtimeMs: runtimeMs, error: error, results: results });
 }
 function SendExpectProcessCrash(runtimeMs)
 {
     sendAsyncMessage("reftest:ExpectProcessCrash");
 }
 function SendTestDone(runtimeMs)
 {
     sendAsyncMessage("reftest:TestDone", { runtimeMs: runtimeMs });
 }
 function roundTo(x, fraction)
 {
     return Math.round(x/fraction)*fraction;
 }
 function SendUpdateCanvasForEvent(event, contentRootElement)
 {
     var win = content;
     var scale = markupDocumentViewer().fullZoom;
     var rects = [ ];
     if (shouldSnapshotWholePage(contentRootElement)) {
       // See comments in SendInitCanvasWithSnapshot() re: the split
       // logic here.
       if (!gBrowserIsRemote) {
           sendSyncMessage("reftest:UpdateWholeCanvasForInvalidation");
       } else {
           SynchronizeForSnapshot(SYNC_ALLOW_DISABLE);
           sendAsyncMessage("reftest:UpdateWholeCanvasForInvalidation");
       }
       return;
     }
     var rectList = event.clientRects;
     LogInfo("SendUpdateCanvasForEvent with " + rectList.length + " rects");
     for (var i = 0; i < rectList.length; ++i) {
         var r = rectList[i];
         // Set left/top/right/bottom to "device pixel" boundaries
         var left = Math.floor(roundTo(r.left*scale, 0.001));
         var top = Math.floor(roundTo(r.top*scale, 0.001));
         var right = Math.ceil(roundTo(r.right*scale, 0.001));
         var bottom = Math.ceil(roundTo(r.bottom*scale, 0.001));
         LogInfo("Rect: " + left + " " + top + " " + right + " " + bottom);
         rects.push({ left: left, top: top, right: right, bottom: bottom });
     }
     // See comments in SendInitCanvasWithSnapshot() re: the split
     // logic here.
     if (!gBrowserIsRemote) {
         sendSyncMessage("reftest:UpdateCanvasForInvalidation", { rects: rects });
     } else {
         SynchronizeForSnapshot(SYNC_ALLOW_DISABLE);
         sendAsyncMessage("reftest:UpdateCanvasForInvalidation", { rects: rects });
     }
 }
 #if REFTEST_B2G
 OnInitialLoad();
 #else
 addEventListener("load", OnInitialLoad, true);
 #endif