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Replace monomorphic proxies by Type.Proxy.Proxy and polymorphic variables #116

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Merged
merged 2 commits into from
Nov 26, 2020
Merged

Replace monomorphic proxies by Type.Proxy.Proxy and polymorphic variables #116

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cd0f3f1
Replace monomorphic proxies by Type.Proxy.Proxy and polymorphic varia…
kl0tl Nov 23, 2020
7a943a7
Update dependency on purescript-record back to master
kl0tl Nov 25, 2020
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13 changes: 7 additions & 6 deletions src/Test/QuickCheck/Arbitrary.purs
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Original file line number Diff line number Diff line change
Expand Up @@ -36,14 +36,14 @@ import Data.String.CodeUnits (charAt, fromCharArray)
import Data.String.NonEmpty (NonEmptyString)
import Data.String.NonEmpty as NES
import Data.String.NonEmpty.CodeUnits as NESCU
import Data.Symbol (class IsSymbol, SProxy(..))
import Data.Symbol (class IsSymbol)
import Data.Tuple (Tuple(..))
import Partial.Unsafe (unsafePartial)
import Prim.Row as Row
import Prim.RowList as RL
import Record as Record
import Test.QuickCheck.Gen (Gen, arrayOf, chooseInt, elements, listOf, oneOf, perturbGen, repeatable, sized, uniform)
import Type.Data.RowList (RLProxy(..))
import Type.Proxy (Proxy(..))

-- | The `Arbitrary` class represents those types whose values can be
-- | _randomly-generated_.
Expand Down Expand Up @@ -244,8 +244,9 @@ genericCoarbitrary :: forall a rep. Generic a rep => Coarbitrary rep => a -> Gen
genericCoarbitrary x g = to <$> coarbitrary (from x) (from <$> g)

-- | A helper typeclass to implement `Arbitrary` for records.
class ArbitraryRowList :: RL.RowList Type -> Row Type -> Constraint
class ArbitraryRowList list row | list -> row where
arbitraryRecord :: RLProxy list -> Gen (Record row)
arbitraryRecord :: forall rlproxy. rlproxy list -> Gen (Record row)

instance arbitraryRowListNil :: ArbitraryRowList RL.Nil () where
arbitraryRecord _ = pure {}
Expand All @@ -260,11 +261,11 @@ instance arbitraryRowListCons ::
) => ArbitraryRowList (RL.Cons key a listRest) rowFull where
arbitraryRecord _ = do
value <- arbitrary
previous <- arbitraryRecord (RLProxy :: RLProxy listRest)
pure $ Record.insert (SProxy :: SProxy key) value previous
previous <- arbitraryRecord (Proxy :: Proxy listRest)
pure $ Record.insert (Proxy :: Proxy key) value previous

instance arbitraryRecordInstance ::
( RL.RowToList row list
, ArbitraryRowList list row
) => Arbitrary (Record row) where
arbitrary = arbitraryRecord (RLProxy :: RLProxy list)
arbitrary = arbitraryRecord (Proxy :: Proxy list)