def METHOD_NAME(self):
    for test in glob.glob("*.t") + glob.glob("*.t.exe"):
        if os.access(test, os.X_OK):
            # Executables only
            if self._is_parallelizable(test):
                log.debug("Treating as parallel: %s", test)
                self._parallelq.put(test)
            else:
                log.debug("Treating as serial: %s", test)
                self._serialq.put(test)
        else:
            log.debug("Ignored test %s as it is not executable", test)
    log.info("Parallel tests: %s", self._parallelq.qsize())
    log.info("Serial tests: %s", self._serialq.qsize())