Completely nerding out about pytest markers with Anthony Sottile.

Some of what we talk about:

• Running a subset of tests with markers.
• Using marker expressions with and, or, not, and parentheses.
• Keyword expressions also can use and, or, not, and parentheses.
• Markers and pytest functionality that use mark, such as parametrize, skipif, etc.
• Accessing markers with itermarkers and get_closest_marker through item.
• Passing values, metadata through markers to fixtures or hook functions.

Links:

• Registering markers
• slow marker example in pytest documentation — Control skipping of tests according to command line option
• pytest-repeat · PyPI
• source code for pytest-repeat
• Working with custom markers — pytest documentation
• Using -k expr to select tests based on their name
• Marker revamp and iteration, Historical Notes — pytest documentation