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|
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
{-|
Module : Main
Copyright : © 2023-2026 Albert Krewinkel
License : MIT
Maintainer : Albert Krewinkel <tarleb@hslua.org>
Tests for type specifiers.
-}
import Control.Monad (when)
import Data.String (fromString)
import HsLua.Core
import HsLua.Core.Types
import HsLua.Marshalling
import HsLua.Typing
import Lua.Arbitrary ()
import Test.Tasty (TestTree, defaultMain, testGroup)
import Test.Tasty.HUnit ((@?=), testCase)
import Test.Tasty.QuickCheck
import Test.QuickCheck.Instances ()
import qualified HsLua.Core as HsLua
import qualified Test.QuickCheck.Monadic as QC
-- | Run this spec.
main :: IO ()
main = defaultMain tests
-- | Aeson tests
tests :: TestTree
tests = testGroup "hslua-typespec"
[ testGroup "string representation"
[ testCase "any" $ "any" @?= anyType
, testCase "boolean" $ "boolean" @?= booleanType
, testCase "function" $ "function" @?= functionType
, testCase "integer" $ "integer" @?= integerType
, testCase "nil" $ "nil" @?= nilType
, testCase "number" $ "number" @?= numberType
, testCase "string" $ "string" @?= stringType
, testCase "table" $ "table" @?= tableType
, testCase "userdata" $ "userdata" @?= userdataType
, testCase "light userdata" $
"light userdata" @?= lightUserdataType
, testCase "sequence" $
"{string,...}" @?= seqType stringType
, testCase "alternative" $
"string|boolean|number" @?= stringType #|# (booleanType #|# numberType)
, testCase "sequence of alternatives" $
"{string|number,...}" @?=
seqType (stringType #|# numberType)
, testCase "string or strings" $
"string|{string,...}" @?=
stringType #|# seqType stringType
, testCase "strings or string" $
"{string,...}|string" @?=
seqType stringType #|# stringType
, testCase "sequence of sequences" $
"{{number,...}, ... }" @?=
seqType (seqType "number")
]
, testGroup "to string"
[ testCase "any" $ typeSpecToString anyType @?= "any"
, testCase "boolean" $ typeSpecToString booleanType @?= "boolean"
, testCase "function" $ typeSpecToString functionType @?= "function"
, testCase "number" $ typeSpecToString numberType @?= "number"
, testCase "string" $ typeSpecToString stringType @?= "string"
, testCase "table" $ typeSpecToString tableType @?= "table"
, testCase "userdata" $ typeSpecToString userdataType @?= "userdata"
, testCase "sequence" $
seqType stringType @?= "{string,...}"
]
, testGroup "operators"
[ testGroup "#|#"
-- These should be property tests
[ testCase "combining basic types yields sum type" $
booleanType #|# numberType @?= SumType [booleanType, numberType]
, testCase "any is the unit" $ do
booleanType #|# anyType @?= anyType
anyType #|# booleanType @?= anyType
, testCase "void is zero" $ do
booleanType #|# voidType @?= booleanType
voidType #|# numberType @?= numberType
]
]
, testGroup "Marshalling"
[ testProperty "Roundtrip TypeSpec" $
assertRoundtripEqual pushTypeSpec peekTypeSpec
]
]
instance Arbitrary TypeSpec where
arbitrary = arbitraryTypeSpec 3
shrink = shrinkTypeSpec
instance Arbitrary Name where
arbitrary = Name . fromString <$> arbitrary
arbitraryTypeSpec :: Int -> Gen TypeSpec
arbitraryTypeSpec size = frequency
[ (8, BasicType . toType <$> arbitrary)
, (1, NamedType <$> arbitrary)
, (3, resize (size - 1) $ SeqType <$> arbitrary)
, (2, resize (size - 1) $ SumType <$> arbitrary)
, (2, resize (size - 1) $ RecType <$> arbitrary)
, (1, resize (size - 1) $ FunType <$> arbitrary <*> arbitrary)
, (1, return AnyType)
]
shrinkTypeSpec :: TypeSpec -> [TypeSpec]
shrinkTypeSpec = \case
SumType cs -> SumType <$> shrinkList shrink cs
SeqType x -> shrink x
FunType d c -> (FunType c <$> shrinkList shrinkTypeSpec d) ++
((`FunType` d) <$> shrinkList shrinkTypeSpec c)
x -> shrinkNothing x
assertRoundtripEqual :: Eq a
=> Pusher HsLua.Exception a -> Peeker HsLua.Exception a
-> a -> Property
assertRoundtripEqual pushX peekX x = QC.monadicIO $ do
y <- QC.run $ roundtrip pushX peekX x
QC.assert (x == y)
roundtrip :: Pusher HsLua.Exception a -> Peeker HsLua.Exception a -> a -> IO a
roundtrip pushX peekX x = run $ do
pushX x
size <- gettop
when (size /= 1) $
failLua $ "not the right amount of elements on the stack: " ++ show size
result <- forcePeek $ peekX top
afterPeekSize <- gettop
when (afterPeekSize /= 1) $
failLua $ "peeking modified the stack: " ++ show afterPeekSize
return result
|
