Quality of Life Improvments #69
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Introduce `checkIO` as a runtime alternative to `check` for property-based
tests. While `check` runs during compilation with a fixed seed, `checkIO`
defers execution to runtime with configurable random seeds via
`cfg.randomSeed`.
Key changes:
- Add `isPassed` constructor to `Testable` for tests that pass without
formal proof (distinguishes SlimCheck successes from inconclusive results)
- Add `individualIO` constructor to `TestSeq` for deferred IO tests
- Add `TestSeq.runIO` to execute IO tests at runtime
- Update `lspecIO` and `lspecEachIO` to use the new IO runner
- Add comprehensive documentation for the framework
- Add `describe` and `context` as aliases for `group`, matching hspec's
naming conventions for better test organization and readability
- Add `Gen.frequency` combinator for weighted random generation,
allowing generators to be selected with specified probabilities
- Add examples demonstrating both features with property-based tests
johnchandlerburnham
changed the title
arthurpaulino
approved these changes
Jan 20, 2026
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
checkIOas a runtime alternative tocheckfor property-based tests. Whilecheckruns during compilation with a fixed seed,checkIOdefers execution to runtime with configurable random seeds viacfg.randomSeed.describeandcontextas aliases forgroup, matching hspec's naming conventions for better test organization and readabilityGen.frequencycombinator for weighted random generation, allowing generators to be selected with specified probabilities