typelevel/cats-effect

Laws testing for queue functor instances

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#1,618 创建于 2021年1月22日

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 (7 评论) (0 反应) (0 负责人)Scala (2,230 star) (572 fork)batch import
good first issue

描述

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 :)

贡献者指南

技术栈
scala
领域
testingbackend
议题类型
test
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
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1-2 days
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fresh
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clear
前置要求
Scalacats effectcats laws testing
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
70
研究方向
The issue requests adding laws tests for Functor, Invariant, and Contravariant instances of Q, Deq, and PQ ueue in cats.effect.std. Look at existing law tests for other types (e.g., Ref, Deferred) in the cats effect laws module to understand the pattern. Implement tests using ScalaCheck and Discipline, verifying each typeclass law. Key files to examine include the queue implementations in cats/effect/std and the test suite in cats/effect/tests. Ensure tests are added for all three typeclasses and all three queue types.