Noestests：AttributeError 使用@patch when 运行 Nosetests on multiple files

Question

我正在运行对多个文件进行 nosetests 并收到与导入特定文件相关的错误，我实际上不确定错误与什么有关，我认为它要么是什么搞定进口或修补它的东西。错误本身看起来像：

（对于使用 @patch 装饰器的每个测试函数，我都遇到了这些错误之一）

Error
Traceback (most recent call last):
  File "/home/user/Documents/venvs/migration/local/lib/python2.7/site-packages/unittest2/case.py", line 67, in testPartExecutor
yield
  File "/home/user/Documents/venvs/migration/local/lib/python2.7/site-packages/unittest2/case.py", line 625, in run
testMethod()
  File "/home/user/Documents/venvs/migration/local/lib/python2.7/site-packages/mock/mock.py", line 1297, in patched
arg = patching.__enter__()
  File "/home/user/Documents/venvs/migration/local/lib/python2.7/site-packages/mock/mock.py", line 1353, in __enter__
self.target = self.getter()
  File "/home/user/Documents/venvs/migration/local/lib/python2.7/site-packages/mock/mock.py", line 1523, in <lambda>
getter = lambda: _importer(target)
  File "/home/user/Documents/venvs/migration/local/lib/python2.7/site-packages/mock/mock.py", line 1210, in _importer
thing = _dot_lookup(thing, comp, import_path)
  File "/home/user/Documents/venvs/migration/local/lib/python2.7/site-packages/mock/mock.py", line 1200, in _dot_lookup
return getattr(thing, comp)
AttributeError: 'module' object has no attribute 'utils'

包结构如下所示：

my_package
    - my_module
        - __init__.py
        - utils.py
        - other.py
    - tests
        - test_utils.py
        - test_other.py

nosetests 命令：

nosetests -e unit --with-coverage --cover-package=my_package --cover-erase --cover-xml --with-xunit tests --nocapture

所以奇怪的是，如果我运行仅在 utils 测试 class 本身上进行 nosetests，它运行没问题，所有导入工作和所有补丁工作，没有错误, 所有测试都通过。

test_utils.py 文件如下所示：

from my_module.utils import *

class TestBusinessProcess(unittest2.TestCase):        

    @patch('my_module.utils.something')
    def test_some_utils_function(self, something_mock):
        # test implementation..
        # this function will throw:
        # AttributeError: 'module' object has no attribute 'utils'
        # when running whole tests folder and not on individual test file
        pass

    @patch('my_module.utils.something_else')
    def test_some_other_utils_function(self, something_else_mock):
        # test implementation..
        # same as above
        pass

另一个测试文件中的测试示例，当运行无论哪种方式时都没有问题：

from my_module.other import *

class TestBusinessProcess(unittest2.TestCase):        

    @patch('my_module.other.something')
    def test_some_function(self, something_mock):
        # test implementation..
        # no issues!
        pass

    @patch('my_module.other.something_else')
    def test_some_other_function(self, something_else_mock):
        # test implementation..
        # no issues!
        pass

非常感谢任何帮助。

Answer 1

我仍然不知道哪里出了问题，但似乎与导入有关。

无论如何，此解决方法解决了问题，但不确定具体原因。

my_module 中的 __init__.py 最初是空的。然后我编辑它以公开 utils.py:

的各个功能

__init__.py

from utils import test_some_utils_function, test_some_other_utils_function

__all__ = [
    "test_some_utils_function",
    "test_some_other_utils_function"
]

Noestests：AttributeError 使用@patch when 运行 Nosetests on multiple files

Noestests: AttributeError using @patch when running Nosetests on multiple files

python

testing

unit-testing

nose