pytest Quick Start Guide

Creating marks

Marks are created with the @pytest.mark decorator. It works as a factory, so any access to it will automatically create a new mark and apply it to a function. This is easier to understand with an example:

@pytest.mark.slowdef test_long_computation():    ...

By using the @pytest.mark.slow decorator, you are applying a mark named slow to test_long_computation.

Marks can also receive parameters:

@pytest.mark.timeout(10, method="thread")def test_topology_sort():    ...

The @pytest.mark.timeout used in the last example was taken from the pytest-timeout plugin; for more details go to https://pypi.org/project/pytest-timeout/. With this, we define that test_topology_sort should not take more than 10 seconds, in which case it should be terminated ...