1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
{- arch-tag: MissingH.Either tests
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 Eithertest(tests) where
import HUnit
import MissingH.Either
import Testutil
import Control.Exception
test_maybeToEither =
let f msg inp exp = TestLabel msg $ TestCase $ assertEqual "" exp inp in
[
f "Nothing" (maybeToEither "error" (Nothing::Maybe String))
(Left "error"),
f "Nothing diff types" (maybeToEither "error" (Nothing::Maybe Int))
(Left "error"),
f "Just" (maybeToEither "error" (Just "good")) (Right "good"),
f "Diff types" (maybeToEither "error" (Just (5::Int)))
(Right (5::Int))
]
test_forceEither =
let f msg inp exp = TestLabel msg $ TestCase $ assertEqual "" exp inp in
[
f "Right" (forceEither ((Right "foo")::Either Int String)) "foo",
TestLabel "Left" $ TestCase $ assertRaises "" (ErrorCall "\"wrong\"")
("" @=? forceEither (Left "wrong"))
]
tests = TestList [TestLabel "test_maybeToEither" (TestList test_maybeToEither),
TestLabel "test_forceEither" (TestList test_forceEither)
]
|
