[FIX] core: close cursors open during tests

openerp/tests/common.py

@@ -88,7 +88,14 @@ class BaseCase(unittest2.TestCase):
     """
 
     def cursor(self):
-        return self.registry.cursor()
+        cr = self.registry.cursor()
+
+        @self.addCleanup
+        def close_cursor():
+            if not cr.closed:
+                cr.close()
+
+        return cr
 
     def ref(self, xid):
         """ Returns database ID for the provided :term:`external identifier`,