graphql-engine/server/src-test/Control/Concurrent/ExtendedSpec.hs

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module Control.Concurrent.ExtendedSpec
( spec,
)
where
import Control.Concurrent.Extended qualified as C
import Hasura.Prelude
import Test.Hspec
spec :: Spec
spec = do
describe "forConcurrentlyEIO" $ do
it "chunks correctly" $ do
for_ [1, 2, 3, 4, 5] $ \chunkSize -> do
out <- runExceptT $ C.forConcurrentlyEIO chunkSize [pure 1, pure 2, pure 3, pure 4] id
out `shouldBe` (Right [1, 2, 3, 4] :: Either Int [Int])
it "behaves like ExceptT" $ do
for_ [1, 2, 3, 4, 5] $ \chunkSize -> do
out <- runExceptT $ C.forConcurrentlyEIO chunkSize [pure 1, throwError 2, throwError 3, pure 4] id
out `shouldBe` (Left 2 :: Either Int [Int])