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|
--------------------------------------------------------------------------------
-- See end of this file for licence information.
--------------------------------------------------------------------------------
-- |
-- Module : TestHelpers
-- Copyright : (c) 2003, Graham Klyne, 2009 Vasili I Galchin, 2011 Douglas Burke
-- License : GPL V2
--
-- Maintainer : Douglas Burke
-- Stability : experimental
-- Portability : H98
--
-- This module contains test case helper functions, providing a range of
-- commonly-used test cases.
--
--------------------------------------------------------------------------------
-- TODO: move to using test-framework
module TestHelpers
(
conv
, test
, testCompare, testCompareEq
, testEq, testNe, testLe, testGe
, testElem
, testJust, testNothing
, testJe, testJl, testNo
, testEqv, testNotEqv, testEqv2, testHasEqv, testMaybeEqv
, testMaker
)
where
import qualified Data.Set as S
import qualified Test.Framework as TF
import qualified Test.Framework.Providers.HUnit as TF
import Control.Monad (unless)
import Data.Maybe (isJust, isNothing, fromJust)
import Test.HUnit (Test(TestCase, TestList)
, Assertion
, assertBool, assertEqual, assertFailure
)
-- quick conversion from a set of HUnit tests to
-- a labelled test-framework group.
--
conv :: String -> Test -> TF.Test
conv lbl = TF.testGroup lbl . TF.hUnitTestToTests
------------------------------------------------------------
-- Test case helpers
------------------------------------------------------------
assertMember :: (Eq a, Show a) => String -> a -> [a] -> Assertion
assertMember preface expected actual =
unless (expected `elem` actual ) (assertFailure msg)
where msg = (if null preface then "" else preface ++ "\n") ++
"expected: " ++ show expected ++ "\nbut got: " ++ show actual
test :: String -> Bool -> Test
test lab = TestCase . assertBool ("test:"++lab)
testCompare :: (Eq a, Show a) => String -> String -> a -> a -> Test
testCompare typ lab a1 a2 =
TestCase ( assertEqual (typ++lab) a1 a2 )
testCompareEq :: (Eq a, Show a) => String -> String -> Bool -> a -> a -> Test
testCompareEq typ lab eq a1 a2 =
TestCase ( assertEqual (typ++lab) eq (a1==a2) )
testMaker :: (Show b, Eq b) => (a -> b) -> String -> String -> a -> a -> Test
testMaker f l1 l2 x y =
TestCase (assertEqual (l1 ++ ":" ++ l2) (f x) (f y))
testEq :: (Eq a, Show a) => String -> a -> a -> Test
testEq = testCompare "testEq:"
testNe :: (Eq a, Show a) => String -> a -> a -> Test
testNe lab a1 a2 =
TestCase ( assertBool ("testNe:"++lab) (a1 /= a2) )
testLe :: (Ord a, Show a) => String -> Bool -> a -> a -> Test
testLe lab eq a1 a2 =
TestCase ( assertEqual ("testLe:"++lab) eq (a1<=a2) )
testGe :: (Ord a, Show a) => String -> Bool -> a -> a -> Test
testGe lab eq a1 a2 =
TestCase ( assertEqual ("testGe:"++lab) eq (a1>=a2) )
-- Test for Just x or Nothing
testJust :: String -> Maybe a -> Test
testJust lab = TestCase . assertBool ("testJust:"++lab) . isJust
testNothing :: String -> Maybe a -> Test
testNothing lab = TestCase . assertBool ("testJust:"++lab) . isNothing
testJe :: (Eq a, Show a) => String -> a -> Maybe a -> Test
testJe lab e a = TestList
[ TestCase $ assertBool lab (isJust a)
, TestCase $ assertEqual lab e (fromJust a)
]
testJl :: (Eq a, Show a) => String -> Int -> Maybe [a] -> Test
testJl lab e a = TestList
[ TestCase $ assertBool lab (isJust a)
, TestCase $ assertEqual lab e (length (fromJust a))
]
testNo :: (Eq a, Show a) => String -> [[a]] -> Test
testNo lab a =
TestCase $ assertBool lab (null a)
-- Test for list membership
testElem :: (Eq a, Show a) => String -> a -> [a] -> Test
testElem lab a1 as = TestCase ( assertMember ("testElem:"++lab) a1 as )
-- Compare lists and lists of lists and Maybe lists for set equivalence:
data MaybeListTest a = MaybeListTest (Maybe (S.Set a))
instance (Ord a) => Eq (MaybeListTest a) where
MaybeListTest (Just a1) == MaybeListTest (Just a2) = a1 == a2
MaybeListTest Nothing == MaybeListTest Nothing = True
_ == _ = False
instance (Show a) => Show (MaybeListTest a) where
show (MaybeListTest a) = show a
testEqv :: (Ord a, Show a) => String -> [a] -> [a] -> Test
testEqv = testMaker S.fromList "testEqv"
testNotEqv :: (Ord a, Show a) => String -> [a] -> [a] -> Test
testNotEqv lab a1 a2 =
TestCase ( assertBool ("testNotEqv:"++lab) (S.fromList a1 /= S.fromList a2) )
testEqv2 :: (Ord a, Show a) => String -> [[a]] -> [[a]] -> Test
testEqv2 = testMaker (S.fromList . map S.fromList) "testEqv2"
testHasEqv :: (Ord a, Show a) => String -> [a] -> [[a]] -> Test
testHasEqv lab a1 a2 =
TestCase ( assertMember ("testHasEqv:"++lab) ma1 ma2 )
where
ma1 = S.fromList a1
ma2 = map S.fromList a2
testMaybeEqv :: (Ord a, Show a) => String -> Maybe [a] -> Maybe [a] -> Test
testMaybeEqv = testMaker (MaybeListTest . fmap S.fromList) "testMaybeEqv"
{-
------------------------------------------------------------
-- Test suites for the above
------------------------------------------------------------
testSuccessSuite = TestList
[ test "01" True
, testEq "02" 2 2
, testLe "03" 1 2
, testLe "04" 2 2
, testGe "05" 3 2
, testGe "07" 2 2
, testJust "08" (Just "08")
, testNothing "09" (Nothing :: Maybe String)
, testElem "10" 'b' "abc"
, testEqv "11" "abc" "bca"
, testEqv "12" "abc" "bbccaa"
, testEqv2 "13" ["abc","def","ghi"] ["fed","ghi","bca"]
, testHasEqv "14" "abc" ["fed","ghi","bca"]
, testHasEqv "15" "ghi" ["fed","ghi","bca"]
, testHasEqv "16" "def" ["fed","ghi","bca"]
, testMaybeEqv "17" (Just "abc") (Just "bca")
, testMaybeEqv "18" Nothing (Nothing :: Maybe String)
]
-- All of these tests should be failures:
-- Look for number of failures == total number of tests
testFailureSuite = TestList
[ test "01" False
, testEq "02" 2 22
, testLe "03" 2 1
, testGe "04" 2 3
, testJust "05" (Nothing :: Maybe String)
, testNothing "06" (Just "09")
, testElem "07" 'd' "abc"
, testEqv "08" "abd" "bca"
, testEqv2 "09" ["abd","def","ghi"] ["fed","ghi","bca"]
, testHasEqv "10" "abd" ["fed","ghi","bca"]
, testMaybeEqv "11" (Just "abc") (Just "bda")
, testMaybeEqv "12" Nothing (Just "bda")
]
-}
--------------------------------------------------------------------------------
--
-- Copyright (c) 2003, Graham Klyne, 2009 Vasili I Galchin, 2011 Douglas Burke
-- All rights reserved.
--
-- This file is part of Swish.
--
-- Swish 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.
--
-- Swish 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 Swish; if not, write to:
-- The Free Software Foundation, Inc.,
-- 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
--
--------------------------------------------------------------------------------
|
