diff -r 000000000000 -r 6474c204b198 docshell/test/browser/browser_bug554155.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/docshell/test/browser/browser_bug554155.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+function test() {
+  waitForExplicitFinish();
+
+  let tab = gBrowser.addTab("http://example.com");
+
+  tab.linkedBrowser.addEventListener("load", function() {
+    tab.linkedBrowser.removeEventListener("load", arguments.callee, true);
+
+    let numLocationChanges = 0;
+
+    let listener = {
+      onLocationChange: function() {
+        numLocationChanges++;
+      }
+    };
+
+    gBrowser.addTabsProgressListener(listener);
+
+    // pushState to a new URL (http://example.com/foo").  This should trigger
+    // exactly one LocationChange event.
+    tab.linkedBrowser.contentWindow.history.pushState(null, null, "foo");
+
+    executeSoon(function() {
+      gBrowser.removeTab(tab);
+      gBrowser.removeTabsProgressListener(listener);
+      is(numLocationChanges, 1,
+         "pushState should cause exactly one LocationChange event.");
+      finish();
+    });
+
+  }, true);
+}