1 files changed, 40 insertions, 0 deletions
diff --git a/docshell/test/navigation/test_bug1745638.html b/docshell/test/navigation/test_bug1745638.html
new file mode 100644
index 0000000000..594c464da3
--- /dev/null
+++ b/docshell/test/navigation/test_bug1745638.html
@@ -0,0 +1,40 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>bug 1745638</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+  <script>
+  // This test triggers an assertion in the old session history
+  // implementation.
+  SimpleTest.expectAssertions(0, 1);
+
+  SimpleTest.waitForExplicitFinish();
+  var testWindow;
+  var loadCount = 0;
+  function test() {
+    testWindow = window.open("file_bug1745638.html");
+  }
+
+  function pageLoaded() {
+    ++loadCount;
+    is(testWindow.document.getElementById('testFrame').contentDocument.body.innerHTML,
+       "passed",
+       "Iframe's textual content should be 'passed'.");
+    if (loadCount == 1) {
+      testWindow.history.go(0);
+    } else {
+      testWindow.close();
+      SimpleTest.finish();
+    }
+  }
+
+  </script>
+</head>
+<body onload="test()">
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+</body>
+</html>