{-# LANGUAGE OverloadedStrings #-}

module Sound.Tidal.UtilsTest where

import Sound.Tidal.Utils
import Test.Microspec
import Prelude hiding ((*>), (<*))

run :: Microspec ()
run =
  describe "Sound.Tidal.Utils" $ do
    describe "delta" $ do
      it "subtracts the second element of a tuple from the first" $ do
        property $ delta (3, 10) === (7 :: Int)

    describe "applies function to both elements of tuple" $ do
      let res = mapBoth (+ 1) (2, 5)
      property $ ((3, 6) :: (Int, Int)) === res

    describe "apply function to first element of tuple" $ do
      let res = mapFst (+ 1) (2, 5)
      property $ ((3, 5) :: (Int, Int)) === res

    describe "apply function to second element of tuple" $ do
      let res = mapSnd (+ 1) (2, 5)
      property $ ((2, 6) :: (Int, Int)) === res

    describe "return midpoint between first and second tuple value" $ do
      let res = mid (2, 5)
      property $ (3.5 :: Double) === res

    describe "return of two lists, with unique values to each list" $ do
      let res = removeCommon [1, 2, 5, 7, 12, 16] [2, 3, 4, 5, 15, 16]
      property $ (([1, 7, 12], [3, 4, 15]) :: ([Int], [Int])) === res

    describe "wrap around indexing" $ do
      let res = (!!!) [1 .. 5] 7
      property $ (3 :: Int) === res

    describe "safe list indexing" $ do
      let res = nth 2 ([] :: [Int])
      property $ Nothing === res

    describe "list accumulation with given list elements" $ do
      let res = accumulate ([1 .. 5] :: [Int])
      property $ [1, 3, 6, 10, 15] === res

    describe "index elements in list" $ do
      let res = enumerate ['a', 'b', 'c']
      property $ [(0, 'a'), (1, 'b'), (2, 'c')] === res

    describe "split list by given pred" $ do
      let res = wordsBy (== ':') "bd:3"
      property $ ["bd", "3"] === res