third_party/WebKit/LayoutTests/http/tests/cache/history-only-cached-subresource-loads.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4     <title>Test Caching "no-store" For History Only</title>
   5 </head>
   6 <body>
   7     <p>
   8         This test checks that loading a subresource with "Cache-Control: no-store" is
   9         cached and reused in back navigation when the page is not in the page cache.
  10     </p>
  11     <p>
  12         We then test that loading the same subresource is refetched when used in
  13         non-stale loads such as refreshes or normal navigation.
  14     </p>
  15     <pre id="console"></pre>
  16     <script>
  17     // Asynchronous test because this requires a new window to perform multiple navigations.
  18     if (window.testRunner) {
  19         testRunner.dumpAsText();
  20         testRunner.waitUntilDone();
  21         testRunner.setCanOpenWindows();
  22     }
  23
  24     // Values to check.
  25     var originalRandomNumber = 0;
  26     var backLoadRandomNumber = 0;
  27     var refreshRandomNumber  = 0;
  28     var nextLoadRandomNumber = 0;
  29
  30     // Window we will be controlling.
  31     var target;
  32
  33     // Pass messages between windows to control the navigation types.
  34     var pre = document.getElementById('console');
  35     window.addEventListener('message', function(event) {
  36
  37         // First time, record the first number, and tell the target window to trigger a back navigation.
  38         if (!originalRandomNumber) {
  39             originalRandomNumber = event.data;
  40             target.postMessage('go-forward-and-back', '*');
  41             return;
  42         }
  43
  44         // Second time, record the second number. It should be identical. Also tell the target window to reload.
  45         if (!backLoadRandomNumber) {
  46             backLoadRandomNumber = event.data;
  47             var wasCached = (backLoadRandomNumber === originalRandomNumber);
  48             if (wasCached)
  49                 pre.appendChild(document.createTextNode('PASS - no-store subresource was cached and used for a back navigation\n'));
  50             else
  51                 pre.appendChild(document.createTextNode('FAIL - no-store subresource should have been cached and used in a back navigation\n'));
  52             target.postMessage('reload', '*');
  53             return;
  54         }
  55
  56         // Third time, record the third number. It should not match. Also tell the target window to navigate forward.
  57         if (!refreshRandomNumber) {
  58             refreshRandomNumber = event.data;
  59             var wasCached = (refreshRandomNumber === originalRandomNumber);
  60             if (wasCached)
  61                 pre.appendChild(document.createTextNode('FAIL - no-store subresource should have been refetched with a reload\n'));
  62             else
  63                 pre.appendChild(document.createTextNode('PASS - no-store subresource was refetched with a reload\n'));
  64             target.postMessage('next', '*');
  65             return;
  66         }
  67
  68         // Fourth time, record the fourth number. It should not match any numbers so far.
  69         if (!nextLoadRandomNumber) {
  70             nextLoadRandomNumber = event.data;
  71             var wasCached = (nextLoadRandomNumber === originalRandomNumber || nextLoadRandomNumber === refreshRandomNumber);
  72             if (wasCached)
  73                 pre.appendChild(document.createTextNode('FAIL - no-store subresource should have been refetched with a normal navigation\n'));
  74             else
  75                 pre.appendChild(document.createTextNode('PASS - no-store subresource was refetched with a normal navigation\n'));
  76         }
  77
  78         // Test completed.
  79         target.close();
  80         if (window.testRunner)
  81             window.testRunner.notifyDone();
  82
  83     }, false);
  84
  85     // Open the target window and it will begin to send us messages.
  86     target = window.open('resources/no-store-resource.html');
  87     </script>
  88 </body>
  89 </html>