matrix testing
Domain: CI CD Automation
🎯 Motivation
matrix-testing runs the same workflow across multiple combinations of OS, Python version, and dependencies. It catches compatibility bugs across environments in a single PR, which is essential for cross-platform libraries.
📋 Concrete Example
A workflow uses matrix: python: ["3.9", "3.10", "3.11", "3.12"]; os: [ubuntu, windows, macos], creating 12 parallel jobs that each run the full test suite.
🔗 Analogy
matrix-testing is like testing a new car model on 12 different road types simultaneously. If it runs smoothly on all of them, you can promise buyers it works everywhere.