def METHOD_NAME(self):
    try:
        output = self.trace(abspath("assert_usable" + self.EXTENSION))
        output = output.strip()
    except (FileNotFoundError, NotADirectoryError, PermissionError) as fnfe:
        output = str(fnfe)
    if output != "probe: success":
        raise unittest.SkipTest(
            "{}(1) failed: {}".format(self.COMMAND[0], output)
        )