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Use independent seeds in makeSizedByteStrings #7735

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Use independent seeds in makeSizedByteStrings #7735

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8 changes: 5 additions & 3 deletions plutus-core/cost-model/budgeting-bench/Generators.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -12,13 +12,14 @@ import Control.Monad
import Data.Bits
import Data.ByteString (ByteString)
import Data.Int (Int64)
import Data.List as List (foldl')
import Data.List as List (foldl', unfoldr)
import Data.Text (Text)
import Data.Word (Word64)

import Hedgehog qualified as H
import Hedgehog.Internal.Gen qualified as G
import Hedgehog.Internal.Range qualified as R
import Hedgehog.Internal.Seed qualified as Seed
import Hedgehog.Internal.Tree qualified as T
import System.IO.Unsafe (unsafePerformIO)
import System.Random (StdGen, randomR)
Expand Down Expand Up @@ -77,9 +78,10 @@ makeSizedIntegers g (n : ns) =
makeSizedByteString :: H.Seed -> Int -> ByteString
makeSizedByteString seed n = genSample seed (G.bytes (R.singleton (8 * n)))

-- FIXME: this is terrible
makeSizedByteStrings :: H.Seed -> [Int] -> [ByteString]
makeSizedByteStrings seed l = map (makeSizedByteString seed) l
makeSizedByteStrings seed sizes = zipWith makeSizedByteString seeds sizes
where
seeds = unfoldr (Just . Seed.split) seed

-- TODO: don't use Hedgehog's 'sample' below: it silently resizes the generator
-- to size 30, so listOfByteStringsOfLength and listOfByteStrings are biased
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