Bug 158747 – [mac] LayoutTest media/restore-from-page-cache.html is a flaky failure

• Status: NEW
• Component: Media

[Ryan Haddad]

LayoutTest media/restore-from-page-cache.html is a flaky failure

<https://build.webkit.org/builders/Apple%20El%20Capitan%20Debug%20WK1%20(Tests)/builds/5938>
<https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=media%2Frestore-from-page-cache.html>

--- /Volumes/Data/slave/elcapitan-debug-tests-wk1/build/layout-test-results/media/restore-from-page-cache-expected.txt
+++ /Volumes/Data/slave/elcapitan-debug-tests-wk1/build/layout-test-results/media/restore-from-page-cache-actual.txt
@@ -9,8 +9,7 @@
 *** Changing volume just before going into cache, to schedule a volumechange event.
 *** Page returned from cache
 EXPECTED (loadCount == '1') OK
-EXPECTED (videoComputedStyle.width == '320px') OK
-EXPECTED (videoComputedStyle.height == '240px') OK
+EXPECTED (videoComputedStyle.width == '320px'), OBSERVED '300px' FAIL
+EXPECTED (videoComputedStyle.height == '240px'), OBSERVED '150px' FAIL
 *** ratechange event fired. This should happen AFTER returning from cache.
-*** volumechange event fired. This should happen AFTER returning from cache.

[Ryan Haddad]

Diff from another failing run:

--- /Volumes/Data/slave/elcapitan-debug-tests-wk2/build/layout-test-results/media/restore-from-page-cache-expected.txt
+++ /Volumes/Data/slave/elcapitan-debug-tests-wk2/build/layout-test-results/media/restore-from-page-cache-actual.txt
@@ -9,8 +9,10 @@
 *** Changing volume just before going into cache, to schedule a volumechange event.
 *** Page returned from cache
 EXPECTED (loadCount == '1') OK
-EXPECTED (videoComputedStyle.width == '320px') OK
-EXPECTED (videoComputedStyle.height == '240px') OK
+EXPECTED (videoComputedStyle.width == '320px'), OBSERVED '300px' FAIL
+EXPECTED (videoComputedStyle.height == '240px'), OBSERVED '150px' FAIL
 *** ratechange event fired. This should happen AFTER returning from cache.
-*** volumechange event fired. This should happen AFTER returning from cache.
+EVENT(loadstart)
+EVENT(canplaythrough)
+EXPECTED (loadCount == '0'), OBSERVED '1' FAIL

[Ryan Haddad]

Marked test as flaky on El Capitan in <http://trac.webkit.org/projects/webkit/changeset/202824>