Learn how to use pytest's parametrize decorator to write fewer test functions while testing more cases. The post demonstrates refactoring multiple similar tests into single parametrized functions using @pytest.mark.parametrize, reducing code duplication and improving maintainability without sacrificing test coverage.
Articles by Sandro Wrzalek
About testing your code in Python (Part 3) — pytest Fixtures
Learn how to leverage pytest fixtures for better Python testing. This guide covers fixture benefits like reusability and atomic test control, explores the three-phase structure (setup, yield, teardown), and demonstrates creating custom fixtures to reduce code duplication while maintaining comprehensive test coverage.
About testing your code in Python (Part 2) — Writing your first tests
Learn how to write your first pytest unit tests in Python through a hands-on example. This guide covers the complete testing workflow from project setup and edge case design to implementing the four-phase test structure (arrange, act, assert, cleanup) and executing your test suite.
About testing your code in Python (Part 1) — Introduction
Discover why testing your Python code is essential and why pytest is the ideal framework for the job. This introduction covers the key benefits of testing—from peace of mind to better documentation—and explains how testing frameworks provide reproducibility and automation that simple print statements can't match.
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