There are ways to configure pytest test discovery through configuration file .
I wonder if there are ways to configure pytest test discovery through command line options/args. In other words, can I just pass some argument/switch to pytest command to achieve this?
Every entry you put in the config file (so-called "inioption") can be passed from command line using the -o/--override-ini option. The -o option can be applied multiple times. E.g.
$ pytest -o python_files='check_*.py' \
-o python_classes=Check \
-o python_functions='*_check'
Source: Configuration Options.