def METHOD_NAME(self):
    tfc = TrivialFileCatalog()
    lfn = "some_lfn"
    pfn = "some_pfn"
    tfc.addMapping("direct", lfn, pfn, mapping_type = 'lfn-to-pfn')
    tfc.addMapping("direct", pfn, lfn, mapping_type = 'pfn-to-lfn')
    out_pfn = tfc.matchLFN("direct", lfn)
    out_lfn = tfc.matchPFN("direct", pfn)
    self.assertEqual(lfn, out_lfn, "Error: incorrect matching")
    self.assertEqual(pfn, out_pfn, "Error: incorrect matching")