Custom Markers in PyTest

Custom Markers in PyTest

PyTest is a powerful testing framework for Python that allows users to organize and execute test cases efficiently. One of its most useful features is markers, which help in categorizing and selectively running tests. While PyTest provides built-in markers, users can also define their own custom markers to better structure their test suites.

How to Specify Custom Markers in pytest.ini File

To create and use custom markers, you need to register them in the pytest.ini file. This ensures that PyTest recognizes the markers and does not raise warnings.

 [pytest]
 markers =
 smoke: Marks test as a smoke test
 regression: Marks test as a regression test
 slow: Marks test as a slow-running test
 

Simple Example of Custom Test Marker

Below is an example of how to use custom markers in a PyTest script:

 import pytest
 
 @pytest.mark.smoke
 def test_login():
 assert 1 + 1 == 2
 
 @pytest.mark.regression
 def test_user_profile():
 assert "username" in {"username": "John"}
 
 @pytest.mark.slow
 def test_data_processing():
 import time
 time.sleep(5)
 assert True
 

You can run tests with a specific marker using the following command:

 pytest -m smoke
 

This will execute only the tests marked with @pytest.mark.smoke.