[Haskell-cafe] No VerboseCheck in QuickCheck 2?

[Yusaku Hashimoto]

Hi,

I don't think I am familiar enough with QuickCheck 2.
But there seems to be no verboseCheck like function,
and sample and sample' is useful to printing test cases.

     ghci> sample (arbitrary :: Gen Int)
     1
     0
     1
     -2
     -2
     -5
     -16
     -9
     -57
     -115
     -94
     ghci> sample (arbitrary :: Gen (Int,Int))
     (0,1)
     (-1,-1)
     (1,2)
     (3,-4)
     (-4,5)
     (11,-9)
     (-2,8)
     (18,17)
     (-63,-32)
     (-117,-71)
     (195,-198)
     ghci> f <- fmap head $ sample' (arbitrary :: Gen (Int -> Maybe  
Int))
     ghci> map f [1..10]
     [Nothing,Just (-1),Just 1,Nothing,Nothing,Just  
1,Nothing,Nothing,Just 1,Just 1]

Thanks,
Hashimoto

On 2009/05/26, at 11:54, Shin-Cheng Mu wrote:

> Hi,
>
> I believe this must have been raised before but I
> did some searching to no avail, so please allow me..
>
> It seems that verboseCheck is gone in QuickCheck 2.
> In QuickCheck 2, how do we print the test cases,
> specify the number of tests, or the sizes of test
> cases, etc.?
>
> Thank you very much..
>
> sincerely,
> Shin
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