docshell/test/navigation/test_bug1364364.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=1364364
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug 1364364</title>
   9   <script src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  11   <script type="application/javascript">
  12
  13   /** Test for Bug 1364364 */
  14   let testWin, testDoc;
  15   async function test() {
  16     SimpleTest.waitForExplicitFinish();
  17     if (SpecialPowers.Services.appinfo.sessionHistoryInParent) {
  18       // This test relies on the possibility to modify the bfcached document.
  19       // The new implementation is more restricted and thus works only
  20       // when the bfcached browsing context is the only top level one
  21       // in the browsing context group.
  22       ok(true, "This test is for the old bfcache implementation only.");
  23       SimpleTest.finish();
  24       return;
  25     }
  26     testWin = window.open("file_bug1364364-1.html");
  27     await waitForLoad(testWin);
  28     testDoc = testWin.document;
  29
  30     // file_bug1364364-1.html will load a few dynamic iframes and then navigate
  31     // top browsing context to file_bug1364364-2.html, which will postMessage
  32     // back.
  33   }
  34
  35   function waitForLoad(win) {
  36     return new Promise(r => win.addEventListener("load", r, { once: true}));
  37   }
  38
  39   window.addEventListener("message", async function(msg) {
  40     if (msg.data == "navigation-done") {
  41       is(testWin.history.length, 6, "check history.length");
  42
  43       // Modify a document in bfcache should cause the cache being dropped tho
  44       // RemoveFromBFCacheAsync.
  45       testDoc.querySelector("#content").textContent = "modified";
  46       await new Promise(r => setTimeout(r, 0));
  47
  48       is(testWin.history.length, 2, "check history.length after bfcache dropped");
  49       testWin.close();
  50       SimpleTest.finish();
  51     }
  52   });
  53
  54   </script>
  55 </head>
  56 <body onload="test();">
  57 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1364364">Mozilla Bug 1364364</a>
  58 <p id="display"></p>
  59 <div id="content" style="display: none">
  60
  61 </div>
  62 <pre id="test">
  63 </pre>
  64 </body>
  65 </html>