1 files changed, 115 insertions, 0 deletions
diff --git a/docshell/test/mochitest/test_bug509055.html b/docshell/test/mochitest/test_bug509055.html
new file mode 100644
index 0000000000..57ede19b43
--- /dev/null
+++ b/docshell/test/mochitest/test_bug509055.html
@@ -0,0 +1,115 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=509055
+-->
+<head>
+  <title>Test for Bug 509055</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=509055">Mozilla Bug 509055</a>
+<p id="display"></p>
+<div id="status"></div>
+<div id="content">
+</div>
+<pre id="test">
+  <script type="application/javascript">
+
+    /** Test for Bug 509055 */
+
+    SimpleTest.waitForExplicitFinish();
+
+    var gGen;
+
+    function shortWait() {
+      setTimeout(function() { gGen.next(); }, 0, false);
+    }
+
+    function onChildHashchange(e) {
+      // gGen might be undefined when we refresh the page, so we have to check here
+      dump("onChildHashchange() called.\n");
+      if (gGen)
+        gGen.next();
+    }
+
+    function onChildLoad(e) {
+      if (gGen)
+        gGen.next();
+    }
+
+    async function* runTest() {
+      var popup = window.open("file_bug509055.html", "popup 0",
+                              "height=200,width=200,location=yes," +
+                              "menubar=yes,status=yes,toolbar=yes,dependent=yes");
+      popup.hashchangeCallback = onChildHashchange;
+      popup.onload = onChildLoad;
+      dump("Waiting for initial load.\n");
+      yield undefined;
+
+      // Without this wait, the change to location.hash below doesn't create a
+      // SHEntry or enable the back button.
+      shortWait();
+      dump("Got initial load.  Spinning event loop.\n");
+      yield undefined;
+
+      popup.location.hash = "#1";
+      dump("Waiting for hashchange.\n");
+      yield undefined;
+
+      popup.history.back();
+      dump("Waiting for second hashchange.\n");
+      yield undefined; // wait for hashchange
+
+      popup.document.title = "Changed";
+
+      // Wait for listeners to be notified of the title change.
+      shortWait();
+      dump("Got second hashchange.  Spinning event loop.\n");
+      yield undefined;
+
+      let sheTitle = "";
+      if (!SpecialPowers.Services.appinfo.sessionHistoryInParent) {
+        var sh = SpecialPowers.wrap(popup)
+                              .docShell
+                              .QueryInterface(SpecialPowers.Ci.nsIWebNavigation)
+                              .sessionHistory;
+
+        // Get the title of the inner popup's current SHEntry
+        sheTitle = sh.legacySHistory.getEntryAtIndex(sh.index).title;
+      } else {
+        let chromeScript = SpecialPowers.loadChromeScript(() => {
+          /* eslint-env mozilla/chrome-script */
+          addMessageListener("getTitle", browsingContext => {
+            // eslint-disable-next-line no-shadow
+            let sh = browsingContext.sessionHistory;
+            let title = sh.getEntryAtIndex(sh.index).title;
+            sendAsyncMessage("title", title);
+          });
+        });
+
+        let p = chromeScript.promiseOneMessage("title");
+        let browsingContext = SpecialPowers.wrap(popup)
+                                           .docShell.browsingContext;
+        chromeScript.sendAsyncMessage("getTitle", browsingContext);
+        sheTitle = await p;
+        chromeScript.destroy();
+      }
+      is(sheTitle, "Changed", "SHEntry's title should change when we change.");
+
+      popup.close();
+
+      SimpleTest.executeSoon(SimpleTest.finish);
+    }
+
+    window.addEventListener("load", function() {
+      gGen = runTest();
+      gGen.next();
+    });
+
+  </script>
+
+</body>
+</html>