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Issue 7693029:
Deflake PrerenderExcessiveMemory, fix race (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/| Index: chrome/test/data/prerender/prerender_visibility_hidden_quick.html |
| =================================================================== |
| --- chrome/test/data/prerender/prerender_visibility_hidden_quick.html (revision 0) |
| +++ chrome/test/data/prerender/prerender_visibility_hidden_quick.html (revision 0) |
| @@ -0,0 +1,42 @@ |
| +<html> |
| +<!-- |
| +This test checks the visibility API when a prerendered page is visited without |
| +being displayed, before the page has finished loading. |
| +--> |
| +<head> |
| +<title>Prerender Visibility Hidden Quick Switch</title> |
| + |
| +<script> |
| +// Checks visibility state while the page is still loading. |
| +var lastState = document.webkitVisibilityState; |
| +var loadingStatePassed = document.webkitHidden && |
| + (lastState == 'prerender' || lastState == 'hidden'); |
|
dominich
2011/08/25 21:18:04
it might be more future-proof to check that lastSt
mmenke
2011/08/25 21:36:53
Done. Still only allow at most one transition fro
|
| +var unexpectedStateChange = false; |
| + |
| +function onVisibilityChange(event) { |
| + if (lastState != 'prerender' || |
| + document.webkitVisibilityState != 'hidden') { |
| + unexpectedStateChange = true; |
| + return; |
| + } |
| + lastState = document.webkitVisibilityState; |
| +} |
| + |
| +document.addEventListener('webkitvisibilitychange', |
| + onVisibilityChange, |
| + false); |
| + |
| +// Checks that either the first visibility state was 'prerender' and there |
| +// was one and only one visibility change event to 'hidden', or visibility |
| +// was always 'hidden'. |
| +function DidDisplayPass() { |
| + return loadingStatePassed && |
| + !unexpectedStateChange && |
| + 'hidden' == document.webkitVisibilityState && |
| + document.webkitHidden; |
| +} |
| +</script> |
| + |
| +</head> |
| +<body></body> |
| +</html> |
| Property changes on: chrome\test\data\prerender\prerender_visibility_hidden_quick.html |
| ___________________________________________________________________ |
| Added: svn:eol-style |
| + LF |
