71 lines
2.5 KiB
Haskell
71 lines
2.5 KiB
Haskell
{-# LANGUAGE DeriveGeneric #-}
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{-# LANGUAGE OverloadedStrings #-}
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module Database.PostgreSQL.Opium.FromFieldSpec (spec) where
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import Data.ByteString (ByteString)
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import Data.Text (Text)
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import Database.PostgreSQL.LibPQ (Connection)
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import Database.PostgreSQL.Opium (FromRow)
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import GHC.Generics (Generic)
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import Test.Hspec (SpecWith, describe, it, shouldBe)
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import qualified Database.PostgreSQL.Opium as Opium
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newtype SingleInt = SingleInt
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{ int :: Int
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} deriving (Eq, Generic, Show)
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instance FromRow SingleInt where
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newtype SingleText = SingleText
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{ text :: Text
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} deriving (Eq, Generic, Show)
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instance FromRow SingleText where
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newtype SingleString = SingleString
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{ string :: String
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} deriving (Eq, Generic, Show)
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instance FromRow SingleString where
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shouldFetch :: (Eq a, FromRow a, Show a) => Connection -> ByteString -> [a] -> IO ()
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shouldFetch conn query expectedRows = do
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actualRows <- Opium.fetch_ conn query
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actualRows `shouldBe` Right expectedRows
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spec :: SpecWith Connection
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spec = do
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describe "FromField Int" $ do
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it "Decodes smallint" $ \conn -> do
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shouldFetch conn "SELECT 42::SMALLINT AS int" [SingleInt 42]
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it "Decodes integer" $ \conn -> do
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shouldFetch conn "SELECT 42::INTEGER AS int" [SingleInt 42]
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it "Decodes bigint" $ \conn -> do
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shouldFetch conn "SELECT 42::BIGINT AS int" [SingleInt 42]
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describe "FromField Text" $ do
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it "Decodes text" $ \conn -> do
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shouldFetch conn "SELECT 'Hello, World!'::TEXT AS text" [SingleText "Hello, World!"]
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it "Decodes character" $ \conn -> do
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shouldFetch conn "SELECT 'Hello, World!'::CHARACTER(10) AS text" [SingleText "Hello, Wor"]
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shouldFetch conn "SELECT 'Hello, World!'::CHARACTER(20) AS text" [SingleText "Hello, World! "]
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it "Decodes character varying" $ \conn -> do
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shouldFetch conn "SELECT 'Hello, World!'::CHARACTER VARYING (20) AS text" [SingleText "Hello, World!"]
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describe "FromField String" $ do
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it "Decodes text" $ \conn -> do
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shouldFetch conn "SELECT 'Hello, World!'::TEXT AS string" [SingleString "Hello, World!"]
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it "Decodes character" $ \conn -> do
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shouldFetch conn "SELECT 'Hello, World!'::CHARACTER(10) AS string" [SingleString "Hello, Wor"]
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shouldFetch conn "SELECT 'Hello, World!'::CHARACTER(20) AS string" [SingleString "Hello, World! "]
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it "Decodes character varying" $ \conn -> do
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shouldFetch conn "SELECT 'Hello, World!'::CHARACTER VARYING (20) AS string" [SingleString "Hello, World!"]
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