diff -r 000000000000 -r 6474c204b198 browser/base/content/test/general/browser_tabs_owner.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/general/browser_tabs_owner.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+function test() {
+  gBrowser.addTab();
+  gBrowser.addTab();
+  gBrowser.addTab();
+
+  var tabs = gBrowser.tabs;
+  var owner;
+
+  is(tabs.length, 4, "4 tabs are open");
+
+  owner = gBrowser.selectedTab = tabs[2];
+  BrowserOpenTab();
+  is(gBrowser.selectedTab, tabs[4], "newly opened tab is selected");
+  gBrowser.removeCurrentTab();
+  is(gBrowser.selectedTab, owner, "owner is selected");
+
+  owner = gBrowser.selectedTab;
+  BrowserOpenTab();
+  gBrowser.selectedTab = tabs[1];
+  gBrowser.selectedTab = tabs[4];
+  gBrowser.removeCurrentTab();
+  isnot(gBrowser.selectedTab, owner, "selecting a different tab clears the owner relation");
+
+  owner = gBrowser.selectedTab;
+  BrowserOpenTab();
+  gBrowser.moveTabTo(gBrowser.selectedTab, 0);
+  gBrowser.removeCurrentTab();
+  is(gBrowser.selectedTab, owner, "owner relatitionship persists when tab is moved");
+
+  while (tabs.length > 1)
+    gBrowser.removeCurrentTab();
+}