<html>
<!-- 
This test checks the visibility API when a prerendered page is displayed.
-->
<head>
<title>Prerender Visibility</title>

<script src="prerender_visibility_shared.js"></script>

<script>
// Checks that no visibility change events have occurred, current visibility
// state is "prerender", and visibility state while the page was loading was
// also "prerender".
function DidPrerenderPass() {
  return visibilityStates.length == 1 &&
         hiddenValues.length == 1 &&
         visibilityStates[0] == 'prerender' &&
         hiddenValues[0] == true &&
         document.visibilityState == 'prerender' &&
         document.hidden == true;
}

// Checks that we've only had three visibility states:
//   prerender -> hidden -> visible.
// Also checks current visibility state.
function DidDisplayPass() {
  return visibilityStates.length == 3 &&
         hiddenValues.length == 3 &&
         visibilityStates[1] == 'hidden' &&
         hiddenValues[1] == true &&
         visibilityStates[2] == 'visible' &&
         hiddenValues[2] == false &&
         document.visibilityState == 'visible' &&
         document.hidden == false;
}
</script>

</head>
<body></body>
</html>