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{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeApplications #-}
{-|
Module : HsLua.Marshalling.PeekTests
Copyright : © 2020-2024 Albert Krewinkel
License : MIT
Maintainer : Albert Krewinkel <tarleb@hslua.org>
Stability : alpha
Portability : OverloadedStrings, TypeApplications
Tests for Haskell-value retriever functions.
-}
module HsLua.Marshalling.PeekTests (tests) where
import Control.Applicative (Alternative ((<|>)))
import Data.Maybe (fromMaybe)
import HsLua.Marshalling.Peek
import Test.Tasty.HsLua ((=:), pushLuaExpr, shouldBeResultOf)
import Test.Tasty (TestTree, testGroup)
import qualified HsLua.Core as Lua
-- | Calling Haskell functions from Lua.
tests :: TestTree
tests = testGroup "Peek"
[ testGroup "helper"
[ "retrieving" =:
Failure @() "message" ["retrieving context"] `shouldBeResultOf`
runPeek (retrieving "context" $ failPeek "message")
, "withContext" =:
Failure @() "message" ["context"] `shouldBeResultOf`
runPeek (withContext "context" $ failPeek "message")
, let firstindex idx = do
Lua.rawgeti idx 1
fromMaybe 0 <$> Lua.tointeger Lua.top <* Lua.pop 1
in testGroup "toPeeker"
[ "passes result through" =:
Success 1337 `shouldBeResultOf` do
pushLuaExpr "{1337}"
runPeeker (toPeeker firstindex) Lua.top
, "catches error" =:
let msg = "Lua exception: table expected, got number"
in
Failure msg [] `shouldBeResultOf` do
Lua.pushinteger 1337
runPeeker (toPeeker firstindex) Lua.top
]
]
, testGroup "Peek"
[ "lazy alternative" =:
Success @Int 5 `shouldBeResultOf` runPeek
(return 5 <|> error "nope")
]
]
|
