#!/usr/bin/runhugs +l

module Main where

import Test.HUnit
import Control.Monad
import System
import AufgabeFFP7
import Test.QuickCheck
import System.IO.Unsafe

cases1 = TestLabel "buffer" $ TestList [
  TestCase $ assertEqual "empty"  (0, "")
    (empty),

  TestCase $ assertEqual "insert1" (1, "a")
    (insert 'a' empty),
  TestCase $ assertEqual "insert2" (2, "ab")
    (insert 'b' (insert 'a' empty)),
  TestCase $ assertEqual "insert3" (1, "ba")
    (insert 'b' (-100, "a")),
  TestCase $ assertEqual "insert4" (2, "ab")
    (insert 'b' (100, "a")),

  TestCase $ assertEqual "delete1" (0, "bc")
    (delete (0, "bc")),
  TestCase $ assertEqual "delete2" (1, "ac")
    (delete (2, "abc")),
  TestCase $ assertEqual "delete3" (0, "abc")
    (delete (-100, "abc")),
  TestCase $ assertEqual "delete4" (3, "abc")
    (delete (100, "abc")),

  TestCase $ assertEqual "left1" (0, "abc")
    (left (0, "abc")),
  TestCase $ assertEqual "left2" (0, "abc")
    (left (-100, "abc")),
  TestCase $ assertEqual "left3" (1, "abc")
    (left (2, "abc")),
  TestCase $ assertEqual "left4" (3, "abc")
    (left (4, "abc")),
  TestCase $ assertEqual "left5" (3, "abc")
    (left (100, "abc")),

  TestCase $ assertEqual "right1" (1, "abc")
    (right (0, "abc")),
  TestCase $ assertEqual "right2" (0, "abc")
    (right (-100, "abc")),
  TestCase $ assertEqual "right3" (2, "abc")
    (right (1, "abc")),
  TestCase $ assertEqual "right4" (3, "abc")
    (right (3, "abc")),
  TestCase $ assertEqual "right5" (3, "abc")
    (right (100, "abc")),

  TestCase $ assertEqual "atLeft1" (True)
    (atLeft (0, "abc")),
  TestCase $ assertEqual "atLeft2" (False)
    (atLeft (1, "abc")),
  TestCase $ assertEqual "atLeft3" (True)
    (atLeft (-100, "abc")),

  TestCase $ assertEqual "atRight1" (True)
    (atRight (3, "abc")),
  TestCase $ assertEqual "atRight2" (False)
    (atRight (1, "abc")),
  TestCase $ assertEqual "atRight3" (True)
    (atRight (100, "abc"))
  ]

--------------------------------------------------------------------------------

cases2 = TestLabel "bufferI" $ TestList [
  TestCase $ assertEqual "emptyI"  ("", "")
    (emptyI),

  TestCase $ assertEqual "insertI1" ("a", "")
    (insertI 'a' emptyI),
  TestCase $ assertEqual "insertI2" ("ba", "")
    (insertI 'b' (insertI 'a' emptyI)),
  TestCase $ assertEqual "insertI3" ("ba", "c")
    (insertI 'b' ("a", "c")),

  TestCase $ assertEqual "deleteI1" ("", "bc")
    (deleteI ("", "bc")),
  TestCase $ assertEqual "deleteI2" ("ba", "")
    (deleteI ("cba", "")),
  TestCase $ assertEqual "deleteI3" ("", "")
    (deleteI ("", "")),

  TestCase $ assertEqual "leftI1" ("", "abc")
    (leftI ("", "abc")),
  TestCase $ assertEqual "leftI2" ("a", "bc")
    (leftI ("ba", "c")),
  TestCase $ assertEqual "leftI3" ("ba", "c")
    (leftI ("cba", "")),

  TestCase $ assertEqual "rightI1" ("a", "bc")
    (rightI ("", "abc")),
  TestCase $ assertEqual "rightI2" ("ba", "c")
    (rightI ("a", "bc")),
  TestCase $ assertEqual "rightI3" ("cba", "")
    (rightI ("cba", "")),

  TestCase $ assertEqual "atLeftI1" (True)
    (atLeftI ("", "abc")),
  TestCase $ assertEqual "atLeftI2" (False)
    (atLeftI ("a", "bc")),

  TestCase $ assertEqual "atRightI1" (True)
    (atRightI ("cba", "")),
  TestCase $ assertEqual "atRightI2" (False)
    (atRightI ("a", "bc"))
  ]

--------------------------------------------------------------------------------

cases3 = TestLabel "buffer/I_quickCheck" $ TestList [
  TestCase $ assertEqual "empty" ()
    (unsafePerformIO (quickCheck prop_empty)),
  TestCase $ assertEqual "insert" ()
    (unsafePerformIO (quickCheck prop_insert)),
  TestCase $ assertEqual "delete" ()
    (unsafePerformIO (quickCheck prop_delete)),
  TestCase $ assertEqual "left" ()
    (unsafePerformIO (quickCheck prop_left)),
  TestCase $ assertEqual "right" ()
    (unsafePerformIO (quickCheck prop_right)),
  TestCase $ assertEqual "atLeft" ()
    (unsafePerformIO (quickCheck prop_atLeft)),
  TestCase $ assertEqual "atRight" ()
    (unsafePerformIO (quickCheck prop_atRight))
  ]

--------------------------------------------------------------------------------

cases4 = TestLabel "ssfn/minfree" $ TestList [
  TestCase $ assertEqual "ssfn1"    (5) (ssfn [0,1,2,3,4,6,7,8,9]),
  TestCase $ assertEqual "minfree1" (5) (minfree [0,1,2,3,4,6,7,8,9]),
  TestCase $ assertEqual "ssfn2"    (0) (ssfn [1,2,3,4,5,6,7,8,9]),
  TestCase $ assertEqual "minfree2" (0) (minfree [1,2,3,4,5,6,7,8,9]),
  TestCase $ assertEqual "ssfn/minfree"
    (ssfn (filter (/=499) [0..520]))
    (minfree (filter (/=499) [0..520])),
  TestCase $ assertEqual "quickCheck1" ()
    (unsafePerformIO (quickCheck prop_ssfn_eq_minfree_a)),
  TestCase $ assertEqual "quickCheck2" ()
    (unsafePerformIO (quickCheck prop_ssfn_eq_minfree_b))
  ]

--------------------------------------------------------------------------------

tests :: [Test]
tests = [cases1, cases2, cases3, cases4]

isSuccess :: Counts -> Bool
isSuccess Counts{ cases = _, tried = _, errors = 0, failures = 0 } = True
isSuccess Counts{ cases = _, tried = _, errors = _, failures = _ } = False

runTest :: Test -> IO ()
runTest test = do
  result <- runTestTT test
  unless (isSuccess result) exitFailure

main = do
  forM tests $ (\test -> runTest test)