pylint-dev/pylint

Add randomization to test suite to find test isolation problems

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#9063 opened on Sep 24, 2023

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Description

We can tackle test isolation issues in future work by adding a pytest plugin or some other solution for shuffling test cases.

Originally posted by @jacobtylerwalls in https://github.com/pylint-dev/pylint/issues/9041#issuecomment-1732605038

I'm familiar with the Django test runner's --shuffle option, but perhaps we can evaluate pytest-random-order or other plugins.

Contributor guide

Tech stack
python
Domain
testing
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Pythonpytest basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Look into existing pytest plugins like pytest random order or pytest randomly. Evaluate integration with pylint's test suite. Possibly add a configuration option to enable shuffling. Review the referenced comment in issue #9041 for context.