BSD-3-Clause licensed and maintained by Rudy Matela
This version can be pinned in stack with:hspec-leancheck-0.0.6@sha256:fc595bbc1a258fd4fc2aba1a79d5a413c4bd30232a58840c0e938f2b3d643a26,2374

Module documentation for 0.0.6

hspec-leancheck: LeanCheck support for Hspec

hspec-leancheck’s Build Status hspec-leancheck on Hackage hspec-leancheck on Stackage LTS hspec-leancheck on Stackage Nightly

LeanCheck support for the Hspec test framework.

Installing

$ cabal install hspec-leancheck

Example

Here’s how your spec.hs might look like:

import Test.Hspec
import Test.Hspec.LeanCheck as LC

import Data.List (sort)

main :: IO ()
main = hspec spec

spec :: Spec
spec = do
  describe "sort" $ do
    it "is idempotent" $
      LC.property $ \xs -> sort (sort xs :: [Int]) == sort xs
    it "is identity" $ -- not really
      LC.property $ \xs -> sort (xs :: [Int]) == xs

And here is the output for the above program:

$ ./eg/minimal

sort
  is idempotent
  is identity FAILED [1]

Failures:

  eg/minimal.hs:17:5: 
  1) sort is identity
       [1,0]

  To rerun use: --match "/sort/is identity/"

Randomized with seed 44182769

Finished in 0.0008 seconds
2 examples, 1 failure

Options

Use propertyWith to configure the number of tests.

Further reading

Changes

Changelog for hspec-leancheck

0.0.6

  • no actual code changes
  • minor fixes in the README (HTTPs badges)
  • replace Travis by GitHub as the CI
  • improve build and test scripts

0.0.4

  • improve build scripts

0.0.3

  • export the prop function;
  • export the Property type;
  • improvements in Haddock documentation;
  • improve tests of hspec-leancheck itself;
  • add this changelog.

0.0.2

  • propertyWith -> propertyFor;
  • improvements in documentation.

0.0.1

1st release on Hackage