typelevel / typelevel/cats-effect
Laws testing for queue functor instances
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good first issue
- Dominant language
- Scala
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Description
We have {Functor, Invariant, Contravariant} instances for {Q, Deq, PQ}ueue in cats.effect.std but they currently have no laws tests. We should correct this :)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading the Functor, Invariant, and Contravariant instances for QQueue, DeqQueue, and PQQueue in cats.effect.std. Identify the project's existing laws-test patterns, then add coverage for these instances. Done means the relevant laws tests run successfully for all three queue types.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- scala
- Domain
- testing-qa
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100