content: -- !!! Testing the Int Enum instances.
  
  module Main(main) where
  
  import Control.Exception
  import Data.Int
  
  main = do
    putStrLn "Testing Enum Int8:"
    testEnumInt8
    putStrLn "Testing Enum Int16:"
    testEnumInt16
    putStrLn "Testing Enum Int32:"
    testEnumInt32
    putStrLn "Testing Enum Int64:"
    testEnumInt64
  
  
  testEnumInt8 :: IO ()
  testEnumInt8 = do
       -- succ
    printTest ((succ (0::Int8)))
    printTest ((succ (minBound::Int8)))
    mayBomb   (printTest ((succ (maxBound::Int8))))
  
       -- pred
    printTest (pred (1::Int8))
    printTest (pred (maxBound::Int8))
    mayBomb   (printTest (pred (minBound::Int8))) 
  
       -- toEnum
    printTest ((map (toEnum::Int->Int8) [1, fromIntegral (minBound::Int8), fromIntegral (maxBound::Int8)]))
    mayBomb   (printTest ((toEnum (maxBound::Int))::Int8))
  
       -- fromEnum
    printTest ((map fromEnum [(1::Int8),minBound,maxBound]))
  
       -- [x..] aka enumFrom
    printTest ((take 7 [(1::Int8)..]))
    printTest ((take 7 [((maxBound::Int8)-5)..])) -- just in case it doesn't catch the upper bound..
    
       -- [x,y..] aka enumFromThen
    printTest ((take 7 [(1::Int8),2..]))
    printTest ((take 7 [(1::Int8),7..]))
    printTest ((take 7 [(1::Int8),1..]))
    printTest ((take 7 [(1::Int8),0..]))
    printTest ((take 7 [(5::Int8),2..]))
    let x = (minBound::Int8) + 1
    printTest ((take 7 [x, x-1 ..]))
    let x = (minBound::Int8) + 5
    printTest ((take 7 [x, x-1 ..]))
    let x = (maxBound::Int8) - 5
    printTest ((take 7 [x, (x+1) ..]))
  
       -- [x..y] aka enumFromTo
    printTest ((take 7 ([(1::Int8) .. 5])))
    printTest ((take 4 ([(1::Int8) .. 1])))
    printTest ((take 7 ([(1::Int8) .. 0])))
    printTest ((take 7 ([(5::Int8) .. 0])))
    printTest ((take 7 ([(maxBound-(5::Int8)) .. maxBound])))
    printTest ((take 7 ([(minBound+(5::Int8)) .. minBound])))
  
       -- [x,y..z] aka enumFromThenTo
    printTest ((take 7 [(5::Int8),4..1]))
    printTest ((take 7 [(5::Int8),3..1]))
    printTest ((take 7 [(5::Int8),3..2]))
    printTest ((take 7 [(1::Int8),2..1]))
    printTest ((take 7 [(2::Int8),1..2]))
    printTest ((take 7 [(2::Int8),1..1]))
    printTest ((take 7 [(2::Int8),3..1]))
  
    let x = (maxBound::Int8) - 4
    printTest ((take 7 [x,(x+1)..maxBound]))
    let x = (minBound::Int8) + 5
    printTest ((take 7 [x,(x-1)..minBound]))
  
  testEnumInt16 :: IO ()
  testEnumInt16 = do
       -- succ
    printTest ((succ (0::Int16)))
    printTest ((succ (minBound::Int16)))
    mayBomb   (printTest ((succ (maxBound::Int16))))
  
       -- pred
    printTest (pred (1::Int16))
    printTest (pred (maxBound::Int16))
    mayBomb   (printTest (pred (minBound::Int16))) 
  
       -- toEnum
    printTest ((map (toEnum::Int->Int16) [1, fromIntegral (minBound::Int16), fromIntegral (maxBound::Int16)]))
    mayBomb   (printTest ((toEnum (maxBound::Int))::Int16))
  
  
       -- fromEnum
    printTest ((map fromEnum [(1::Int16),minBound,maxBound]))
  
       -- [x..] aka enumFrom
    printTest ((take 7 [(1::Int16)..]))
    printTest ((take 7 [((maxBound::Int16)-5)..])) -- just in case it doesn't catch the upper bound..
    
       -- [x,y..] aka enumFromThen
    printTest ((take 7 [(1::Int16),2..]))
    printTest ((take 7 [(1::Int16),7..]))
    printTest ((take 7 [(1::Int16),1..]))
    printTest ((take 7 [(1::Int16),0..]))
    printTest ((take 7 [(5::Int16),2..]))
    let x = (minBound::Int16) + 1
    printTest ((take 7 [x, x-1 ..]))
    let x = (minBound::Int16) + 5
    printTest ((take 7 [x, x-1 ..]))
    let x = (maxBound::Int16) - 5
    printTest ((take 7 [x, (x+1) ..]))
  
       -- [x..y] aka enumFromTo
    printTest ((take 7 ([(1::Int16) .. 5])))
    printTest ((take 4 ([(1::Int16) .. 1])))
    printTest ((take 7 ([(1::Int16) .. 0])))
    printTest ((take 7 ([(5::Int16) .. 0])))
    printTest ((take 7 ([(maxBound-(5::Int16)) .. maxBound])))
    printTest ((take 7 ([(minBound+(5::Int16)) .. minBound])))
  
       -- [x,y..z] aka enumFromThenTo
    printTest ((take 7 [(5::Int16),4..1]))
    printTest ((take 7 [(5::Int16),3..1]))
    printTest ((take 7 [(5::Int16),3..2]))
    printTest ((take 7 [(1::Int16),2..1]))
    printTest ((take 7 [(2::Int16),1..2]))
    printTest ((take 7 [(2::Int16),1..1]))
    printTest ((take 7 [(2::Int16),3..1]))
  
    let x = (maxBound::Int16) - 4
    printTest ((take 7 [x,(x+1)..maxBound]))
    let x = (minBound::Int16) + 5
    printTest ((take 7 [x,(x-1)..minBound]))
  
  testEnumInt32 :: IO ()
  testEnumInt32 = do
       -- succ
    printTest ((succ (0::Int32)))
    printTest ((succ (minBound::Int32)))
    mayBomb   (printTest ((succ (maxBound::Int32))))
  
       -- pred
    printTest (pred (1::Int32))
    printTest (pred (maxBound::Int32))
    mayBomb   (printTest (pred (minBound::Int32))) 
  
       -- toEnum
    printTest ((map (toEnum::Int->Int32) [1, fromIntegral (minBound::Int32), fromIntegral (maxBound::Int32)]))
    mayBomb   (printTest ((toEnum (maxBound::Int))::Int32))
  
       -- fromEnum
    printTest ((map fromEnum [(1::Int32),minBound,maxBound]))
  
       -- [x..] aka enumFrom
    printTest ((take 7 [(1::Int32)..]))
    printTest ((take 7 [((maxBound::Int32)-5)..])) -- just in case it doesn't catch the upper bound..
    
       -- [x,y..] aka enumFromThen
    printTest ((take 7 [(1::Int32),2..]))
    printTest ((take 7 [(1::Int32),7..]))
    printTest ((take 7 [(1::Int32),1..]))
    printTest ((take 7 [(1::Int32),0..]))
    printTest ((take 7 [(5::Int32),2..]))
    let x = (minBound::Int32) + 1
    printTest ((take 7 [x, x-1 ..]))
    let x = (minBound::Int32) + 5
    printTest ((take 7 [x, x-1 ..]))
    let x = (maxBound::Int32) - 5
    printTest ((take 7 [x, (x+1) ..]))
  
       -- [x..y] aka enumFromTo
    printTest ((take 7 ([(1::Int32) .. 5])))
    printTest ((take 4 ([(1::Int32) .. 1])))
    printTest ((take 7 ([(1::Int32) .. 0])))
    printTest ((take 7 ([(5::Int32) .. 0])))
    printTest ((take 7 ([(maxBound-(5::Int32)) .. maxBound])))
    printTest ((take 7 ([(minBound+(5::Int32)) .. minBound])))
  
       -- [x,y..z] aka enumFromThenTo
    printTest ((take 7 [(5::Int32),4..1]))
    printTest ((take 7 [(5::Int32),3..1]))
    printTest ((take 7 [(5::Int32),3..2]))
    printTest ((take 7 [(1::Int32),2..1]))
    printTest ((take 7 [(2::Int32),1..2]))
    printTest ((take 7 [(2::Int32),1..1]))
    printTest ((take 7 [(2::Int32),3..1]))
  
    let x = (maxBound::Int32) - 4
    printTest ((take 7 [x,(x+1)..maxBound]))
    let x = (minBound::Int32) + 5
    printTest ((take 7 [x,(x-1)..minBound]))
  
  testEnumInt64 :: IO ()
  testEnumInt64 = do
       -- succ
    printTest ((succ (0::Int64)))
    printTest ((succ (minBound::Int64)))
    mayBomb   (printTest ((succ (maxBound::Int64))))
  
       -- pred
    printTest (pred (1::Int64))
    printTest (pred (maxBound::Int64))
    mayBomb   (printTest (pred (minBound::Int64))) 
  
       -- toEnum
    mayBomb   (printTest ((map (toEnum::Int->Int64) [1, fromIntegral (minBound::Int64), fromIntegral (maxBound::Int64)])))
    mayBomb   (printTest ((toEnum (maxBound::Int))::Int64))
  
       -- fromEnum
    printTest ((map fromEnum [(1::Int64),fromIntegral (minBound::Int) ,fromIntegral (maxBound::Int)]))
    mayBomb   (printTest (fromEnum (maxBound::Int64)))
  
       -- [x..] aka enumFrom
    printTest ((take 7 [(1::Int64)..]))
    printTest ((take 7 [((maxBound::Int64)-5)..])) -- just in case it doesn't catch the upper bound..
  
       -- [x,y..] aka enumFromThen
    printTest ((take 7 [(1::Int64),2..]))
    printTest ((take 7 [(1::Int64),7..]))
    printTest ((take 7 [(1::Int64),1..]))
    printTest ((take 7 [(1::Int64),0..]))
    printTest ((take 7 [(5::Int64),2..]))
    let x = (minBound::Int64) + 1
    printTest ((take 7 [x, x-1 ..]))
    let x = (minBound::Int64) + 5
    printTest ((take 7 [x, x-1 ..]))
    let x = (maxBound::Int64) - 5
    printTest ((take 7 [x, (x+1) ..]))
  
       -- [x..y] aka enumFromTo
    printTest ((take 7 ([(1::Int64) .. 5])))
    printTest ((take 4 ([(1::Int64) .. 1])))
    printTest ((take 7 ([(1::Int64) .. 0])))
    printTest ((take 7 ([(5::Int64) .. 0])))
    printTest ((take 7 ([(maxBound-(5::Int64)) .. maxBound])))
    printTest ((take 7 ([(minBound+(5::Int64)) .. minBound])))
  
       -- [x,y..z] aka enumFromThenTo
    printTest ((take 7 [(5::Int64),4..1]))
    printTest ((take 7 [(5::Int64),3..1]))
    printTest ((take 7 [(5::Int64),3..2]))
    printTest ((take 7 [(1::Int64),2..1]))
    printTest ((take 7 [(2::Int64),1..2]))
    printTest ((take 7 [(2::Int64),1..1]))
    printTest ((take 7 [(2::Int64),3..1]))
  
    let x = (maxBound::Int64) - 4
    printTest ((take 7 [x,(x+1)..maxBound]))
    let x = (minBound::Int64) + 5
    printTest ((take 7 [x,(x-1)..minBound]))
  
  
  --
  --
  --  Utils
  --
  --
  
  
  mayBomb x = catch x (\(ErrorCall e) -> putStrLn ("error " ++ show e))
    `catch` (\e -> putStrLn ("Fail: " ++ show (e :: SomeException)))
  