vscode中的调试测试在容器内失败

Question

配置：

我正在使用以下版本的 VSCode：

Version: 1.46.1
Commit: cd9ea6488829f560dc949a8b2fb789f3cdc05f5d
Date: 2020-06-17T21:13:08.304Z
Electron: 7.3.1
Chrome: 78.0.3904.130
Node.js: 12.8.1
V8: 7.8.279.23-electron.0
OS: Linux x64 5.3.0-59-generic snap

使用 Python 扩展 ms-python.python 版本 v2020.6.8。唯一安装的 PIP 是：

Package           Version
----------------- -------
astroid           2.4.2
attrs             19.3.0
autopep8          1.5.3
isort             4.3.21
lazy-object-proxy 1.4.3
mccabe            0.6.1
more-itertools    8.4.0
packaging         20.4
pip               20.1.1
pluggy            0.13.1
py                1.8.2
pycodestyle       2.6.0
pylint            2.5.3
pyparsing         2.4.7
pytest            5.4.3
setuptools        47.1.1
six               1.15.0
toml              0.10.1
wcwidth           0.2.4
wheel             0.34.2
wrapt             1.12.1

问题：

我正在尝试在 vscode 中调试我的 python 测试，但在调试控制台中出现以下错误：

============================= test session starts ==============================
platform linux -- Python 3.8.3, pytest-5.4.3, py-1.8.2, pluggy-0.13.1
rootdir: /workspaces/test_python_debugging
collected 0 items / 1 error

==================================== ERRORS ====================================
_________________ ERROR collecting tst/dummy/test_unit_math.py _________________
ImportError while importing test module '/workspaces/test_python_debugging/tst/dummy/test_unit_math.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
tst/dummy/test_unit_math.py:5: in <module>
    from dummy.math import add
E   ModuleNotFoundError: No module named 'dummy'
--------------- generated xml file: /tmp/tmp-188wLObs4r6II9x.xml ---------------
=========================== short test summary info ============================
ERROR tst/dummy/test_unit_math.py
=============================== 1 error in 0.19s ===============================
ERROR: not found: /workspaces/test_python_debugging/tst/dummy/test_unit_math.py::test_addition
(no name '/workspaces/test_python_debugging/tst/dummy/test_unit_math.py::test_addition' in any of [<Module tst/dummy/test_unit_math.py>])

测试本身在终端中运行良好。换句话说，找不到“丢失的”模块没有问题。示例：

0f617e2a72ee [/workspaces/test_python_debugging]$ python -m pytest tst/**/te
st*.py -k test_addition
=========================== test session starts ============================
platform linux -- Python 3.8.3, pytest-5.4.3, py-1.8.2, pluggy-0.13.1
rootdir: /workspaces/test_python_debugging
collected 1 item                                                           

tst/dummy/test_unit_math.py .                                        [100%]

============================ 1 passed in 0.01s =============================
0f617e2a72ee [/workspaces/test_python_debugging]$ 

我启动调试器的方式是单击给定测试的Debug Test 链接。示例：

下面是正在使用的.devcontainer.json 配置：

{
  "image": "test_python_debugging",
  "extensions": [
    "ms-python.python"
  ],
  "mounts": [
    "source=${localWorkspaceFolder},target=/app,type=bind,consistency=cached"
  ],
  "settings": {
    "terminal.integrated.shell.linux": "/bin/ash",
    "terminal.integrated.shellArgs.linux": [
      "-l"
    ],
    "python.testing.pytestArgs": [
      "tst",
      "-k test_unit"
    ],
    "python.testing.unittestEnabled": false,
    "python.testing.nosetestsEnabled": false,
    "python.testing.pytestEnabled": true,
    "python.linting.enabled": true,
    "python.linting.pylintEnabled": true,
    "python.pythonPath": "/usr/local/bin/python"
  },
  "containerUser": "app",
  "containerEnv": {
    "PYTHONPATH": "/app/src"
  }
}

有人知道我在配置方面缺少什么吗？

Answer 1

您需要适当地指定您的PYTHONPATH 才能使用src/。您的.devcontainer.json 将目录设置为/app，但您在测试中的回溯表明代码位于/workspaces/test_python_debugging。