54 lines
1.9 KiB
Haskell
54 lines
1.9 KiB
Haskell
{-# LANGUAGE DataKinds #-}
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{-# OPTIONS_GHC -fdefer-type-errors #-}
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module Servant.Server.Internal.ConfigSpec (spec) where
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import Data.Proxy (Proxy (..))
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import Test.Hspec (Spec, describe, it, shouldBe, pending, context)
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import Test.ShouldNotTypecheck (shouldNotTypecheck)
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import Servant.API
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import Servant.Server.Internal.Config
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spec :: Spec
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spec = do
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getConfigEntrySpec
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getConfigEntrySpec :: Spec
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getConfigEntrySpec = describe "getConfigEntry" $ do
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let cfg1 = 0 .:. EmptyConfig :: Config '[ConfigEntry "a" Int]
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cfg2 = 1 .:. cfg1 :: Config '[ConfigEntry "a" Int, ConfigEntry "a" Int]
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it "gets the config if a matching one exists" $ do
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getConfigEntry (Proxy :: Proxy "a") cfg1 `shouldBe` 0
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it "gets the first matching config" $ do
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getConfigEntry (Proxy :: Proxy "a") cfg2 `shouldBe` 1
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it "allows to distinguish between different config entries with the same type by tag" $ do
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let cfg = 'a' .:. 'b' .:. EmptyConfig :: Config '[ConfigEntry 1 Char, ConfigEntry 2 Char]
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getConfigEntry (Proxy :: Proxy 1) cfg `shouldBe` 'a'
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context "Show instance" $ do
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let cfg = 1 .:. 2 .:. EmptyConfig
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it "has a Show instance" $ do
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show cfg `shouldBe` "1 .:. 2 .:. EmptyConfig"
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it "bracketing works" $ do
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show (Just cfg) `shouldBe` "Just (1 .:. 2 .:. EmptyConfig)"
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it "bracketing works with operators" $ do
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let cfg = (1 .:. 'a' .:. EmptyConfig) :<|> ('b' .:. True .:. EmptyConfig)
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show cfg `shouldBe` "(1 .:. 'a' .:. EmptyConfig) :<|> ('b' .:. True .:. EmptyConfig)"
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it "does not typecheck if key does not exist" $ do
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let x = getConfigEntry (Proxy :: Proxy "b") cfg1 :: Int
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shouldNotTypecheck x
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it "does not typecheck if key maps to a different type" $ do
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let x = getConfigEntry (Proxy :: Proxy "a") cfg1 :: String
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shouldNotTypecheck x
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