ndmitchell / ndmitchell/hlint

Using HLint to ensure that test-cases have been added

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Dominant language
Haskell
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Forks
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Description

Is it possible to configure HLint to ensure that each time a ToJSON/FromJSON instance is written (hand-written or auto-derived), there is a property-based test added for it as well?

Generalizing this question:

  • can HLint work across files?
  • can HLint ensure that a function's docs are updated if its type-signature is changed?

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No files, tests, or entry points are named. Start by reviewing how HLint represents and applies checks, then determine whether cross-file analysis can support ToJSON/FromJSON test requirements and documentation updates tied to type-signature changes. Done means a concrete, agreed scope for these capabilities.

Written by the indexing model from the issue text.

Assessment

Tech stack
haskell
Domain
tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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