我有一个函数我想单元测试包含调用两个其他函数。我不确定如何在正确使用补丁的同时嘲笑两个函数。我提供了一个我下面的意思的例子。当我运行nosetests,测试通过,但我觉得必须有一个更干净的方式来做到这一点,我真的不明白关于f.close()的作品...用补丁嘲笑两个函数单元测试
目录结构如下所示:
program/
program/
data.py
tests/
data_test.py
data.py:
import cPickle
def write_out(file_path, data):
f = open(file_path, 'wb')
cPickle.dump(data, f)
f.close()
data_test.py:
from mock import MagicMock, patch
def test_write_out():
path = '~/collection'
mock_open = MagicMock()
mock_pickle = MagicMock()
f_mock = MagicMock()
with patch('__builtin__.open', mock_open):
f = mock_open.return_value
f.method.return_value = path
with patch('cPickle.dump', mock_pickle):
write_out(path, 'data')
mock_open.assert_called_once_with('~/collection', 'wb')
f.close.assert_any_call()
mock_pickle.assert_called_once_with('data', f)
结果:
$ nosetests
.
----------------------------------------------------------------------
Ran 1 test in 0.008s
OK
我觉得我原来的问题不清楚,所以我清理了。我希望这显示我正在寻找更准确的! – cnodell