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{- arch-tag: Test utilities
Copyright (C) 2004 John Goerzen <jgoerzen@complete.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
module Testutil(assertRaises, mapassertEqual) where
import HUnit
import qualified Control.Exception
assertRaises :: Show a => String -> Control.Exception.Exception -> IO a -> IO ()
assertRaises msg selector action =
let thetest e = if e == selector then return ()
else assertFailure $ msg ++ "\nReceived unexpected exception: "
++ (show e) ++ "\ninstead of exception: " ++ (show selector)
in do
r <- Control.Exception.try action
case r of
Left e -> thetest e
Right x -> assertFailure $ msg ++ "\nReceived no exception, but was expecting exception: " ++ (show selector)
mapassertEqual :: (Show b, Eq b) => String -> (a -> b) -> [(a, b)] -> [Test]
mapassertEqual descrip func [] = []
mapassertEqual descrip func ((inp,result):xs) =
(TestCase $ assertEqual descrip result (func inp)) : mapassertEqual descrip func xs
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