升级到最新的 moto 版本（1.3.15 和 1.3.16）后测试中断

Question

将 moto 从版本 1.3.14 更新到 1.3.15/1.3.16 会中断测试并引发异常。

即使单独使用注解也会引发错误。

我使用这个requiriments.txt 文件：

moto==1.3.16

此测试示例适用于 moto 1.3.14，但不适用于较新的版本：

from moto import mock_s3
import unittest

@mock_s3
class TestStringMethods(unittest.TestCase):

    def test_upper(self):
        self.assertEqual('foo'.upper(), 'FOO')


if __name__ == '__main__':
    unittest.main()

这是执行python3 -m unittest mytest.py时的错误：

(venv) ~/p/mocotest $ python3 -m unittest mytest.py
ETraceback (most recent call last):
  File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/usr/lib/python3.8/unittest/__main__.py", line 18, in <module>
    main(module=None)
  File "/usr/lib/python3.8/unittest/main.py", line 101, in __init__
    self.runTests()
  File "/usr/lib/python3.8/unittest/main.py", line 271, in runTests
    self.result = testRunner.run(self.test)
  File "/usr/lib/python3.8/unittest/runner.py", line 176, in run
    test(result)
  File "/usr/lib/python3.8/unittest/suite.py", line 84, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.8/unittest/suite.py", line 122, in run
    test(result)
  File "/usr/lib/python3.8/unittest/suite.py", line 84, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.8/unittest/suite.py", line 122, in run
    test(result)
  File "/usr/lib/python3.8/unittest/suite.py", line 84, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.8/unittest/suite.py", line 122, in run
    test(result)
  File "/usr/lib/python3.8/unittest/case.py", line 736, in __call__
    return self.run(*args, **kwds)
  File "/home/cerveraa/projects/mocotest/venv/lib/python3.8/site-packages/moto/core/models.py", line 102, in wrapper
    self.stop()
  File "/home/cerveraa/projects/mocotest/venv/lib/python3.8/site-packages/moto/core/models.py", line 86, in stop
    self.default_session_mock.stop()
  File "/home/cerveraa/projects/mocotest/venv/lib/python3.8/site-packages/mock/mock.py", line 1563, in stop
    return self.__exit__(None, None, None)
  File "/home/cerveraa/projects/mocotest/venv/lib/python3.8/site-packages/mock/mock.py", line 1529, in __exit__
    if self.is_local and self.temp_original is not DEFAULT:
AttributeError: '_patch' object has no attribute 'is_local'

版本：

• Python 3.8.5
• 点 20.0.2

有什么建议吗？

注 1： 对于测试，我使用的是全新的 venv 环境，安装的唯一库是 moto。

注2： 使用 1.3.14 可以正常工作，但在安装依赖项时会出现警告：

ERROR: python-jose 3.2.0 has requirement ecdsa<0.15, but you'll have ecdsa 0.16.1 which is incompatible

Answer 1

• 这是moto和mock库之间的兼容性问题
• 使用 moto 版本 moto==1.3.16 和 mock 版本 mock==4.0.2 为我解决了这个问题。

Answer 2

同样的问题。 moto 模型的补丁功能会影响模拟功能。

（解决方法）：注释行受到影响

def __exit__(self, *exc_info):
        """Undo the patch."""
        #if self.is_local and self.temp_original is not DEFAULT:
        #    setattr(self.target, self.attribute, self.temp_original)
        #else:
        #    delattr(self.target, self.attribute)
        #    if not self.create and (not hasattr(self.target, self.attribute) or
        #                self.attribute in ('__doc__', '__module__',
        #                                   '__defaults__', '__annotations__',
        #                                   '__kwdefaults__')):
        #        # needed for proxy objects like django settings
        #        setattr(self.target, self.attribute, self.temp_original)

        #del self.temp_original
        #del self.is_local
        #del self.target
        exit_stack = self._exit_stack
        #del self._exit_stack
        return exit_stack.__exit__(*exc_info)