Python unittest发现无法导入源码

Question

我正在使用 Python 集成在 VSCode 中的单元测试进行测试。我有这样的目录

project_root/
  src/
    module/
      __init__.py
      a.py
  test/
    module/
      __init__.py
      test_a.py

test_a.py 有导入 from module.a import SomeClass

我有参数

"-v",
"-s",
"./test",
"-p",
"test*.py"

当运行测试发现失败并引发 ModuleNotFound 或 Can not import 模块或类 in a.py

PS：我在settings.json中设置了PYTHONPATH，代码分析和程序启动都正常。但它似乎对 unittest 插件没有帮助。一个问题是 src、test 都有名为 module 的模块，我不确定这是否重要。

如何让它发挥作用？

更新：似乎是名称冲突问题，unittest_discovery 无法处理。在我将 args 更改为 -s ./test/module 之后，它可以导入 src 模块。

Answer 1

您需要在 .env 文件中配置 PYTHONPATH。

An example of when to use PYTHONPATH would be if you have source code in a src folder and tests in a tests folder. When running tests, however, those tests can't normally access modules in src unless you hard-code relative paths.

To solve this problem, you could add the path to src to PYTHONPATH by creating an .env file within your VS Code workspace.

PYTHONPATH=src

因为

When the terminal settings are used, PYTHONPATH affects any tools that are run within the terminal by a user, as well as any action the extension performs for a user that is routed through the terminal such as debugging. However, in this case when the extension is performing an action that isn't routed through the terminal, such as the use of a linter or formatter, then this setting will not have an effect on module look-up.

详情请参考official docs

Python unittest发现无法导入源码

Python unittest discovery can not import source code

python

python-unittest

visual-studio-code