# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4; encoding:utf-8 -*-
#
import os
import sys
import pytest
[docs]@pytest.fixture(scope="function")
def redirect_stdin():
"""GPG requires stdin to be open and have real file descriptor, which interferes with pytest's capture facility.
Work around this by redirecting /dev/null to stdin temporarily.
Activate this fixture on unittest test methods and classes by means of:
@pytest.mark.usefixtures("redirect_stdin")."""
try:
targetfd_save = os.dup(0)
stdin_save = sys.stdin
nullfile = open(os.devnull, "r")
sys.stdin = nullfile
os.dup2(nullfile.fileno(), 0)
yield
finally:
os.dup2(targetfd_save, 0) # pylint: disable=used-before-assignment
sys.stdin = stdin_save # pylint: disable=used-before-assignment
os.close(targetfd_save)
nullfile.close() # pylint: disable=used-before-assignment