Test-generator

Automagically (using Template Haskell) generates the Haskell-code you need when using HUnit

View the Project on GitHub finnsson/test-generator

test-framework-th

Haskell-module to automagically generate repetetive code when writing HUnit/Quickcheck/Quickcheck2-tests.

testGroupGenerator

signature

testGroupGenerator :: ExpQ

usage

myTestGroup = $(testGroupGenerator)

example

-- file SomeModule.hs
{-# LANGUAGE TemplateHaskell #-}
module SomeModule where
import Test.Framework.TH
import Test.Framework
import Test.HUnit
import Test.Framework.Providers.HUnit
import Test.Framework.Providers.QuickCheck2

-- observe this line! 
fooTestGroup = $(testGroupGenerator)
main = defaultMain [fooTestGroup]
case_1 = do 1 @=? 1
case_2 = do 2 @=? 2
prop_reverse xs = reverse (reverse xs) == xs
   where types = xs::[Int]

is the same as

-- file SomeModule.hs
{-# LANGUAGE TemplateHaskell #-}
module SomeModule where
import Test.Framework.TH
import Test.Framework
import Test.HUnit
import Test.Framework.Providers.HUnit
import Test.Framework.Providers.QuickCheck2

-- observe this line!
fooTestGroup = testGroup "SomeModule" [testCase "1" case_1, testCase "2" case_2, testProperty "reverse" prop_reverse]
main = defaultMain [fooTestGroup]
case_1 = do 1 @=? 1
case_2 = do 2 @=? 2
prop_reverse xs = reverse (reverse xs) == xs
   where types = xs::[Int]

defaultMainGenerator

signature

defaultMainGenerator :: ExpQ

usage

main = $(defaultMainGenerator)

example

-- file SomeModule.hs
{-# LANGUAGE TemplateHaskell #-}
module SomeModule where
import Test.Framework.TH
import Test.Framework
import Test.HUnit
import Test.Framework.Providers.HUnit
import Test.Framework.Providers.QuickCheck2

-- observe this line! 
main = $(defaultMainGenerator)
case_1 = do 1 @=? 1
case_2 = do 2 @=? 2
prop_reverse xs = reverse (reverse xs) == xs
   where types = xs::[Int]

will automagically extract prop_reverse, case_1 and case_2 and run them as well as present them as belonging to the testGroup 'SomeModule'. The above code is the same as

-- file SomeModule.hs
{-# LANGUAGE TemplateHaskell #-}
module SomeModule where
import Test.Framework.TH
import Test.Framework
import Test.HUnit
import Test.Framework.Providers.HUnit
import Test.Framework.Providers.QuickCheck2

-- observe this line! 
main =
  defaultMain [
    testGroup "SomeModule" [ testCase "1" case_1, testCase "2" case_2, testProperty "reverse" prop_reverse]
    ]

case_1 = do 1 @=? 1
case_2 = do 2 @=? 2
prop_reverse xs = reverse (reverse xs) == xs
   where types = xs::[Int]

and will give the following result

me: runghc MyModuleTest.hs 
MyModuleTest:
  reverse: [OK, passed 100 tests]
  1: [OK]
  2: [OK]

        Properties  Test Cases  Total      
Passed  1           2           3          
Failed  0           0           0          
Total   1           2           3