diff -r 000000000000 -r 6474c204b198 browser/base/content/test/general/browser_bug579872.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/general/browser_bug579872.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function test() {
+  let newTab = gBrowser.addTab();
+  waitForExplicitFinish();
+  newTab.linkedBrowser.addEventListener("load", mainPart, true);
+  
+  function mainPart() {
+    gBrowser.pinTab(newTab);
+    gBrowser.selectedTab = newTab;
+    
+    openUILinkIn("javascript:var x=0;", "current");
+    is(gBrowser.tabs.length, 2, "Should open in current tab");
+    
+    openUILinkIn("http://example.com/1", "current");
+    is(gBrowser.tabs.length, 2, "Should open in current tab");
+    
+    openUILinkIn("http://example.org/", "current");
+    is(gBrowser.tabs.length, 3, "Should open in new tab");
+    
+    newTab.removeEventListener("load", mainPart, true);
+    gBrowser.removeTab(newTab);
+    gBrowser.removeTab(gBrowser.tabs[1]); // example.org tab
+    finish();
+  }
+  newTab.linkedBrowser.loadURI("http://example.com");
+}