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Bug 852850 - Add the ability for the reftest framework to test whether an element is painted in invalidation tests. r=roc

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This commit is contained in:
Matt Woodrow 2013-03-25 13:42:27 -04:00
parent 21c449fd93
commit 3172956497
2 changed files with 24 additions and 0 deletions
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8
layout/tools/reftest/README.txt
View File

@ -442,6 +442,14 @@ function doTest() {
}
document.addEventListener("MozReftestInvalidate", doTest, false);
Painting Tests
==============
If an element shouldn't be painted, set the class "reftest-no-paint" on it
when doing an invalidation test. Causing a repaint in your
MozReftestInvalidate handler (for example, by changing the body's background
colour) will accurately test whether the element is painted.
Zoom Tests
==========

16
layout/tools/reftest/reftest-content.js
View File

@ -234,6 +234,10 @@ function shouldWaitForReftestWaitRemoval(contentRootElement) {
.indexOf("reftest-wait") != -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.
@ -360,6 +364,10 @@ function WaitForTestEnd(contentRootElement, inPrintMode) {
// 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);
@ -408,6 +416,14 @@ function WaitForTestEnd(contentRootElement, inPrintMode) {
}
return;
}
if (contentRootElement) {
var elements = getNoPaintElements(contentRootElement);
for (var i = 0; i < elements.length; ++i) {
if (windowUtils().checkAndClearPaintedState(elements[i])) {
LogError("REFTEST TEST-UNEXPECTED-FAIL | element marked as reftest-no-paint got repainted!");
}
}
}
LogInfo("MakeProgress: Completed");
state = STATE_COMPLETED;
gFailureReason = "timed out while taking snapshot (bug in harness?)";