module Main (main) where

import Test.Tasty
import Test.Tasty.HUnit

import Fcd

main :: IO ()
main = defaultMain tests

tests :: TestTree
tests = testGroup "Tests" [unitTests]

unitTests :: TestTree
unitTests = testGroup "Unit tests" [distanceTests]

distanceTests :: TestTree
distanceTests = testGroup "Longest common subsequence tests"
  [ testCase "Some LCS" $ do
      0 @=? lcs "" "42"
      0 @=? lcs "abc" "def"
      1 @=? lcs "ab" "b"
      1 @=? lcs "ab" "ba"
      4 @=? lcs "hello" "hullo"
      5 @=? lcs "my word" "their words"
      4 @=? lcs "abcdef" "acedf"
  , testCase "Sort candidates according to the distance to a reference" $
      ["abcd", "ab", "efg"] @=? sortCandidates ["ab", "abcd", "efg"] "abdc"
  ]