{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE ImportQualifiedPost #-}
{-# LANGUAGE OverloadedRecordDot #-}
{-# HLINT ignore "Use const" #-}
{-# HLINT ignore "Unused LANGUAGE pragma" #-}
{-# HLINT ignore "Avoid lambda" #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE NoFieldSelectors #-}
{-# LANGUAGE NoMonomorphismRestriction #-}
{-# OPTIONS_GHC -Wno-unrecognised-pragmas #-}

module Test.Datalog.NaiveQESpec where

import Test.Hspec
import Datalog.InMemoryDB (InMemoryDB)
import qualified Datalog.InMemoryDB as InMemoryDB
import Datalog.QueryEngine (QueryEngine(query), queryEngine)
import Datalog.NaiveQE

spec :: Spec
spec = do
  describe "NaiveQESpec" do
    it "can do basic queries" do
      let db :: InMemoryDB =
            InMemoryDB.withFacts
              [ "parent(\"alice\", \"bob\")."
              , "parent(\"bob\", \"carol\")."
              ]
          qe :: NaiveQE InMemoryDB = queryEngine db 
      query qe "?- parent(alice,X)." `shouldBe` "#NYI" -- ideally, 'bob'