envfile = 'rc_file'
with mock.patch('six.moves.builtins.open',
mock.mock_open(read_data=msg),
- create=True) as mock_method:
+ create=True) as mock_method,\
+ mock.patch('os.path.isfile', return_value=True):
mock_method.return_value.__iter__ = lambda self: iter(
self.readline, '')
self.runner.source_envfile(envfile)