def test_read_pidfile_failure():
'''
Test a pidfile that does not exist
'''
if six.PY3:
open_name = 'builtins.open'
else:
open_name = '__builtin__.open'
with patch(open_name, create=True) as mock_open:
mock_open.side_effect = IOError
assert util.read_pidfile() is None
def test_read_pidfile():
'''
Test a pidfile that exists
'''
if six.PY3:
open_name = 'builtins.open'
else:
open_name = '__builtin__.open'
with patch(open_name, create=True) as mock_open:
mock_open.side_effect = [mock.mock_open(read_data='420').return_value]
assert util.read_pidfile() == '420'