CODEWITHSUNDEEP
haskellcabalquickcheck
jberryman
jberryman

Reputation: 16645

QuickCheck exit status on failures, and cabal integration

I'm trying to understand how to integrate some quickcheck tests with cabal. This gist suggests that the quickCheck function returns non-zero status on failure, but I am not getting that behavior, so using cabal's exitcode-stdio-1.0 test-suite type doesn't seem to work for me unless I want to call error all over my tests.

The cabal user guide also mentions a detailed-1.0 test-suite, but AFAICT this doesn't exist yet. Is that still the case?

It seems from answers like this one that a lot of people are using the test-framework package. That's overkill for me, but is that what I should use?

I'm left kind of unsatisfied by this situation.

Versions of things I'm using:

cabal-install version 0.10.2
using version 1.10.1.0 of the Cabal library
QuickCheck-2.4.1.1

Upvotes: 13

Views: 1002

Answers (2)

ehird
ehird

Reputation: 40797

Looking at quickCheck's implementation, it indeed never exits the program. However, you can easily implement this behaviour using quickCheckResult:

import Control.Monad
import Test.QuickCheck
import Test.QuickCheck.Test
import System.Exit

main :: IO ()
main = do
  result <- quickCheckResult prop
  unless (isSuccess result) exitFailure

My understanding is that detailed-1.0 is not considered ready for general use yet, and that exitcode-stdio-1.0 is still the recommended testing solution for now.

Upvotes: 19

Paul Johnson
Paul Johnson

Reputation: 17786

I used test-framework in the latest version of my Decimal package. It was not overkill; it did just what was wanted. Take a look at the complete source code if you want an example of how to use it.

Upvotes: 6

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