要以编程方式组合上下文管理器,我使用以下代码:
== helpers.py ==
from contextlib import nested import mock def multiple_patch(obj_to_be_patch, *methods): return nested( *[mock.patch.object(obj_to_be_patch, method) for method in methods] )
== tests.py ==
def test_foo(self): with helpers.multiple_patch(Foo, "method1", "method2", "method3", "method3") as mocks: mock_method1 = mocks[0] .... # asserts on mocks
因为我坚持使用这个版本的python我不能使用contextlib.ExitStack并且不推荐使用contextlib.nested.
谢谢
退房contextlib2.ExitStack
,Python3的后端contextlib.ExitStack
.