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#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# Copyright (C) 2019 Colomban Wendling <[email protected]>
#
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.
"""Helper checking argv[1] is a valid, writable, file descriptor"""
from sys import argv
import os
assert len(argv) == 2
with os.fdopen(int(argv[1]), 'w') as f:
assert f.write('test') == 4
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