diff -r 000000000000 -r 6474c204b198 browser/base/content/test/general/browser_bug533232.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/general/browser_bug533232.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+function test() {
+  var tab1 = gBrowser.selectedTab;
+  var tab2 = gBrowser.addTab();
+  var childTab1;
+  var childTab2;
+
+  childTab1 = gBrowser.addTab("about:blank", { relatedToCurrent: true });
+  gBrowser.selectedTab = childTab1;
+  gBrowser.removeCurrentTab();
+  is(idx(gBrowser.selectedTab), idx(tab1),
+     "closing a tab next to its parent selects the parent");
+
+  childTab1 = gBrowser.addTab("about:blank", { relatedToCurrent: true });
+  gBrowser.selectedTab = tab2;
+  gBrowser.selectedTab = childTab1;
+  gBrowser.removeCurrentTab();
+  is(idx(gBrowser.selectedTab), idx(tab2),
+     "closing a tab next to its parent doesn't select the parent if another tab had been selected ad interim");
+
+  gBrowser.selectedTab = tab1;
+  childTab1 = gBrowser.addTab("about:blank", { relatedToCurrent: true });
+  childTab2 = gBrowser.addTab("about:blank", { relatedToCurrent: true });
+  gBrowser.selectedTab = childTab1;
+  gBrowser.removeCurrentTab();
+  is(idx(gBrowser.selectedTab), idx(childTab2),
+     "closing a tab next to its parent selects the next tab with the same parent");
+  gBrowser.removeCurrentTab();
+  is(idx(gBrowser.selectedTab), idx(tab2),
+     "closing the last tab in a set of child tabs doesn't go back to the parent");
+
+  gBrowser.removeTab(tab2);
+}
+
+function idx(tab) {
+  return Array.indexOf(gBrowser.tabs, tab);
+}