module Main (main) where

import Datalog

import Data.Text qualified as T
import Data.Text.IO qualified as T

import Test.Tasty
import Test.Tasty.HUnit

golden :: (Show err, Show val) => String -> String -> (FilePath -> IO (Either err val)) -> IO ()
golden outExt prefix run = do
  let inFile = "test/golden/" <> prefix <> ".dl"
      outFile = "test/golden/" <> prefix <> outExt
  res <- run inFile
  out <- T.readFile outFile
  case res of
    Left e -> assertFailure (show e)
    Right out' -> assertEqual "" (T.strip out) (T.pack (show out'))

parserGoldenTest :: String -> TestTree
parserGoldenTest prefix = testCase ("Parser test: " <> prefix) $ golden ".show" prefix readProgram

{-
databaseGoldenTest :: String -> TestTree
databaseGoldenTest prefix = testCase ("Database test: " <> prefix) $ golden ".db0" prefix readDatabase

fixedpointGoldenTest :: String -> TestTree
fixedpointGoldenTest prefix = testCase ("Fixedpoint test: " <> prefix) $ golden ".dbF" prefix $ \fp -> do
  fmap (fmap extendFixedpointDb) (readDatabase fp)
-}

main :: IO ()
main = defaultMain $
  testGroup "all"
    [ testGroup "parser"
      [ parserGoldenTest "ancestor"
      , parserGoldenTest "graph"
      ]
    ]