advent-of-code-2022/test/Day6Spec.hs

module Day6Spec (spec) where

import Test.Hspec
import Day6

spec :: Spec
spec =
  describe "Day6" $ do
    describe "Part1" $ do
      it "finds the marker just after the beginning" $ do
        findEnd "aabcd" `shouldBe` Just 5
      it "finds the marker in the beginning" $ do
        findEnd "abcd" `shouldBe` Just 4
        findEnd "aabcd" `shouldBe` Just 5
      it "finds nothing if nothing is there" $ do
        findEnd "abc" `shouldBe` Nothing
        findEnd "abcb" `shouldBe` Nothing
        findEnd "abcabcb" `shouldBe` Nothing
      it "finds a marker" $ do
        findEnd "mjqjpqmgbljsphdztnvjfqwrcgsmlb"`shouldBe` Just 7
        findEnd "bvwbjplbgvbhsrlpgdmjqwftvncz" `shouldBe` Just 5
        findEnd "nppdvjthqldpwncqszvftbrmjlhg" `shouldBe` Just 6
        findEnd "nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg" `shouldBe` Just 10
        findEnd "zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw" `shouldBe` Just 11
    describe "Part 2" $ do
      it "finds start of message marker" $ do
        findStart "mjqjpqmgbljsphdztnvjfqwrcgsmlb"`shouldBe` Just 19
        findStart "bvwbjplbgvbhsrlpgdmjqwftvncz" `shouldBe` Just 23
        findStart "nppdvjthqldpwncqszvftbrmjlhg" `shouldBe` Just 23
        findStart "nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg" `shouldBe` Just 29
        findStart "zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw" `shouldBe` Just 26