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{-|p
Module : VeriFuzz.Graph.RandomAlt
Description : RandomAlt generation for DAG
Copyright : (c) 2018-2019, Yann Herklotz Grave
License : BSD-3
Maintainer : ymherklotz [at] gmail [dot] com
Stability : experimental
Portability : POSIX
Define the random generation for the directed acyclic graph.
-}
module VeriFuzz.Graph.RandomAlt where
import Data.Graph.Inductive (Graph, LEdge, mkGraph)
import qualified Data.Graph.Inductive.Arbitrary as G
import Data.Graph.Inductive.PatriciaTree (Gr)
import Test.QuickCheck (Arbitrary, Gen)
import qualified Test.QuickCheck as QC
randomDAG :: (Arbitrary l, Arbitrary e)
=> Gen (Gr l e)
randomDAG =
G.looplessGraph <$> QC.arbitrary
-- | Generate a random acyclic DAG with an IO instance.
genRandomDAG :: (Arbitrary l, Arbitrary e)
=> IO (Gr l e)
genRandomDAG = QC.generate randomDAG
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