def test_no_arguments_incorrect_system_exit(capsys):
"""No command-line arguments causes SystemExit crash of argparse with error output."""
with pytest.raises(SystemExit):
_ = check_CountCommits.parse([])
captured = capsys.readouterr()
# there is no standard output
counted_newlines = captured.out.count("\n")
assert counted_newlines == 0
# standard error has two lines from pytest
assert "usage:" in captured.err
counted_newlines = captured.err.count("\n")
assert counted_newlines == 2
def test_optional_commandline_arguments_cannot_verify(commandline_arguments,
capsys):
"""Check that incorrect optional command-line arguments check correctly."""
with pytest.raises(SystemExit):
_ = check_CountCommits.parse(commandline_arguments)
captured = capsys.readouterr()
# there is no standard output
counted_newlines = captured.out.count("\n")
assert counted_newlines == 0
# standard error has two lines from pytest
assert "usage:" in captured.err
counted_newlines = captured.err.count("\n")
assert counted_newlines == 2
def test_optional_commandline_arguments_can_parse_created_parser(
commandline_arguments, not_raises):
"""Check that correct optional command-line arguments check correctly."""
with not_raises(SystemExit):
parser = check_CountCommits.get_parser()
_ = check_CountCommits.parse(commandline_arguments, parser)
def test_required_commandline_arguments_can_parse(commandline_arguments,
not_raises):
"""Check that correct optional command-line arguments check correctly."""
with not_raises(SystemExit):
_ = check_CountCommits.parse(commandline_arguments)