module Test.Data.Queue where

import Test.QuickCheck (TestGroup(..), TestResult, quickCheck)
import Prelude
import Data.Queue as Q

example :: Q.Queue Int
example = Q.fromList [1,2,3,4,5]

emptyQ :: Q.Queue Int
emptyQ = Q.fromList []

dropTest1 :: Bool
dropTest1 = (Q.drop example == Q.fromList [2,3,4,5])

dropTest2 :: Bool
dropTest2 = (Q.drop emptyQ == emptyQ)

dropTest3 :: Bool
dropTest3 = (Q.dropR example == Q.fromList [1,2,3,4])

dropTest4 :: Bool
dropTest4 = (Q.dropR emptyQ == emptyQ)

getTest1 :: Bool 
getTest1 = (Q.get example == 1)

getTest2 :: Bool
getTest2 = (Q.getR example == 5)

lastTest :: Bool
lastTest = (Q.last example == 5)

memberTest :: Bool
memberTest = (Q.member 3 example) && (Q.member 1 example) && (Q.member 5 example)

newTest :: Bool
newTest = Q.isEmpty Q.new 

propJoin :: Q.Queue Int->Q.Queue Int->Bool
propJoin q1 q2 = Q.toList q1 ++ Q.toList q2 == Q.toList (Q.join q1 q2)

--reverseTest :: Bool
--reverseTest = (Q.reverse )

propTail :: Q.Queue Int->Bool
propTail q = ( (Q.toList $ Q.tail example) == [2,3,4,5])

--splitTest :: Bool
--splitTest (Q.split 0 example == )

toListTest :: Bool
toListTest = (Q.toList example) == [1,2,3,4,5] 

test :: TestGroup (Integer -> IO TestResult)
test = Exe [ 
             quickCheck "dropTest 1" dropTest1
            --,quickCheck "dropTest 2" dropTest2
            ,quickCheck "dropTest 3" dropTest3
            --,quickCheck "dropTest 4" dropTest4
            ,quickCheck "get 1" getTest1
            ,quickCheck "get 2" getTest2
            ,quickCheck "last"  lastTest
            ,quickCheck "member" memberTest
            ,quickCheck "new" newTest
            ,quickCheck "join" propJoin
            ,quickCheck "tail" propTail
            ,quickCheck "toList" toListTest
           ]