CODEWITHSUNDEEP
pythontestingvisual-studio-codeinstallationpytest
Antonio Santoro
Antonio Santoro

Reputation: 907

pytest unable to discover tests in VSCode

My project structure looks like this:

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

And the settings.json is:

{
    "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
}

The line "python.autoComplete.extraPaths": ["./src"], was necessary, otherwise flake8 complains about every import inside the scripts and I have to prepend src. to every one. Besides this, when I try to run the test discovery from the built-in VSCode button I get from the output:

=================================== 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)]

Even adding src. to each import inside the test_model_mapper.py file won't help.

Upvotes: 2

Views: 9444

Answers (1)

Antonio Santoro
Antonio Santoro

Reputation: 907

The solution is to create a .env file to set the src folder in PYTHONPATH otherwise pytest is unable to find the model package. Also, putting conftest.py inside the src folder doesn't help as suggested by someone.

Upvotes: 2

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