How to pass multiple pytest command line options in the run configuration

Question

Question

How to pass multiple pytest command line options in PyCharm?

Problem

Setting the pytest logging options --log-level=DEBUG --log-cli=True --log-cli-level=DEBUG fails with the error with the PyCharm Run Configuration.

Launching pytest with arguments --log-level=DEBUG --log-cli=True --log-cli-level=DEBUG ****/test_040_objective_sigmoid.py in ****

ERROR: usage: _jb_pytest_runner.py [options] [file_or_dir] [file_or_dir] [...]
_jb_pytest_runner.py: error: unrecognized arguments: --log-cli=True
  inifile: None
  rootdir: ****

With single argument, it runs without an error.

Launching pytest with arguments --log-level=DEBUG ****test_040_objective_sigmoid.py in ****

============================= test session starts ==============================
platform linux -- Python 3.8.5, pytest-6.2.2, py-1.10.0, pluggy-0.13.1 -- ****/bin/python
cachedir: .pytest_cache
rootdir: ****
plugins: pytest_check-1.0.1
collecting ... collected 5 items

When running the pytest from command line, the pytest logging options work.

$ pytest --log-level=DEBUG --log-cli=True --log-cli-level=DEBUG --verbose --cache-clear -x ${DIR}
=============================================================================================== 
test session starts
===============================================================================================
platform linux -- Python 3.8.5, pytest-6.2.2, py-1.10.0, pluggy-0.13.1
...

pytest setup in PyCharm

References

• Run/Debug Configuration: pytest
• Pytest Logging

Answer 1

pytest uses a mixture of single - and double -- hyphens preceding the command line options, some are used without an hyphen. In your example only --log-level uses a double hyphen.

The remaining two options log_cli and log_cli_level are written without any leading hyphen and have an underscore in the middle of the name. Those two are also "Configuration Options" and may need to be prefixed with -o.

A complete reference can be found in Command-line Flags.

So instead of:

--log-level=DEBUG --log-cli=True --log-cli-level=DEBUG

try:

--log-level=DEBUG -o log_cli=True -o log_cli_level=DEBUG

C:\path_to your_project\venv\Scripts\python.exe "C:\Program Files\JetBrains\PyCharm 2019.3.2\plugins\python\helpers\pycharm\_jb_pytest_runner.py" --path C:/path_to your_project/tests/basic_test.py -- --log-level=DEBUG -v -o log_cli=True -o log_cli_level=DEBUG
Testing started at 3:05 AM ...
Launching pytest with arguments --log-level=DEBUG -v -o log_cli=True -o log_cli_level=DEBUG C:/path_to your_project/tests/basic_test.py in C:\path_to your_project

============================= test session starts =============================
platform win32 -- Python 3.9.0, pytest-6.2.2, py-1.10.0, pluggy-0.13.1 -- C:\path_to your_project\venv\Scripts\python.exe
cachedir: .pytest_cache
rootdir: C:\path_to your_project, configfile: pytest.ini
collecting ... collected 1 item

tests/basic_test.py::test_validate_args PASSED                      [100%]

============================== 1 passed in 0.02s ==============================

Process finished with exit code 0