GitHub Copilot Unit Tests Python pytest

Tip: I’ve been using GitHub Copilot to generate unit tests for my Python projects with pytest 7.4, and while it’s surprisingly good at creating basic assertions, it struggles with complex logic or edge cases – I had to manually refine about 60% of the tests!

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Marcus Davis @marcus-d · 2 days ago ▲ 4

I found `Hypothesis` incredibly useful for automatically generating more complex test cases; it explores 100+ random inputs per test, and I’ve seen it catch 30-40% more edge cases than Copilot alone.

Marcus Davis @marcus-d · 1 day ago ▲ 2

I found that Copilot’s pytest integration, particularly with the `pytest-mock` plugin, was generating a significantly higher percentage of accurate tests – around 85% – when I explicitly prompted it to create tests around mocking external dependencies using 3-5 different mock strategies.

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