quickcheck-assertions

HUnit like assertions for QuickCheck https://github.com/s9gf4ult/quickcheck-assertions

Version on this page:0.3.0
LTS Haskell 8.3:0.3.0
Stackage Nightly 2017-02-26:0.3.0
Latest on Hackage:0.3.0
LGPL-3 licensed by Aleksey Uymanov
Maintained by s9gf4ult@gmail.com

Module documentation for 0.3.0

Module provides convenient functions to do some assertions in QuickCheck properties with pretty printed reasons. For example you can do something like that:

module Main where

import Test.Hspec
import Test.Hspec.QuickCheck
import Test.QuickCheck.Assertions
import Test.QuickCheck.Property

someProp :: Int -> Int -> Result
someProp a b = (a ?> b)

someOtherProp :: Double -> Double -> Result
someOtherProp a b = (a ?== b)
               
main = hspec $ describe "failing test" $ do
  prop "must fail" $ someProp
  prop "must fail again" $ someOtherProp

And receive pretty printed fail message when testing:

failing test
  - must fail FAILED [1]                    
  - must fail again FAILED [2]                             

1) failing test must fail FAILED
*** Failed! (after 1 test): 
>>>>>>>>>>>>>> the value
0
>>>>>>>>>>>>>> should be greater than value
0
0
0


2) failing test must fail again FAILED
*** Failed! (after 2 tests and 4 shrinks): 
>>>>>>>>>>>>>> expected
0.0
>>>>>>>>>>>>>> but got
1.0
0.0
1.0

Changes

0.3.0

  • Changelog added
  • Use pretty-show for error descriptions (usefull with huge test cases)
Used by 1 package:
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