def test_is_local_label_reference(self):
   for i in xrange(0,10):
     self.assertEqual(SymbolTable.is_local_label_reference('%df' % i), True)
     self.assertEqual(SymbolTable.is_local_label_reference('%dF' % i), True)
     self.assertEqual(SymbolTable.is_local_label_reference('%db' % i), True)
     self.assertEqual(SymbolTable.is_local_label_reference('%dB' % i), True)
     self.assertEqual(SymbolTable.is_local_label_reference('%dH' % i), False)
     self.assertEqual(SymbolTable.is_local_label_reference('%dh' % i), False)