pytest 无法在 VSCode 中发现测试

Question

我的项目结构如下所示：

src/
├---__init__.py
└---domain/
    ├---__init__.py
    ├---model/
    |   ├---__init__.py
    |   └---model_mapper.py
    └---util/
        ├---__init__.py
        └---utils.py
test/
├---__init__.py
└---unit/
    ├---__init__.py
    └---test_model_mapper.py

而 settings.json 是：

{
    "python.pythonPath": "C:\Users\asant\AppData\Local\Programs\Python\Python37\python.exe",
    "python.linting.flake8Enabled": true,
    "python.autoComplete.extraPaths": ["./src"],
    "python.terminal.executeInFileDir": true,
    "python.testing.pytestEnabled": true,
    "gitlens.currentLine.enabled": false,
    "gitlens.hovers.currentLine.over": "line",
    "gitlens.codeLens.enabled": false,
    "gitlens.hovers.enabled": false,
    "python.testing.pytestArgs": [
        "test"
    ],
    "python.testing.unittestEnabled": false,
    "python.testing.nosetestsEnabled": false
}

行 "python.autoComplete.extraPaths": ["./src"], 是必要的，否则 flake8 会抱怨脚本中的每个导入，我必须在每个导入前加上 src.。除此之外，当我尝试运行来自内置 VSCode 按钮的测试发现时，我从输出中得到：

=================================== ERRORS ====================================
_______________ ERROR collecting test/unit/test_model_mapper.py _______________
ImportError while importing test module 'd:\asant\...\test\unit\test_model_mapper.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
C:\Users\asant\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
test\unit\test_model_mapper.py:2: in <module>
    from domain.util.model_mapper import ModelMapper
E   ModuleNotFoundError: No module named 'domain'
=========================== short test summary info ===========================
ERROR test/unit/test_model_mapper.py
!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
==================== no tests collected, 1 error in 0.10s =====================

Traceback (most recent call last):
  File "c:\Users\asant\.vscode\extensions\ms-python.python-2021.5.926500501\pythonFiles\testing_tools\run_adapter.py", line 22, in <module>
    main(tool, cmd, subargs, toolargs)
  File "c:\Users\asant\.vscode\extensions\ms-python.python-2021.5.926500501\pythonFiles\testing_tools\adapter\__main__.py", line 100, in main
    parents, result = run(toolargs, **subargs)
  File "c:\Users\asant\.vscode\extensions\ms-python.python-2021.5.926500501\pythonFiles\testing_tools\adapter\pytest\_discovery.py", line 44, in discover
    raise Exception("pytest discovery failed (exit code {})".format(ec))
Exception: pytest discovery failed (exit code 2)

    at ChildProcess.<anonymous> (c:\Users\asant\.vscode\extensions\ms-python.python-2021.5.926500501\out\client\extension.js:9:437028)
    at Object.onceWrapper (events.js:422:26)
    at ChildProcess.emit (events.js:315:20)
    at maybeClose (internal/child_process.js:1048:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:288:5)]

即使在 test_model_mapper.py 文件中的每个导入中添加 src. 也无济于事。

Answer 1

解决方法是创建一个.env文件来设置PYTHONPATH中的src文件夹，否则pytest无法找到model包。此外，将 conftest.py 放入 src 文件夹中并没有像某人建议的那样帮助。

pytest 无法在 VSCode 中发现测试

pytest unable to discover tests in VSCode

python

testing

installation

pytest

visual-studio-code