{-# LANGUAGE ExistentialQuantification #-}
module Test.Dwergaz
( Test(..)
, Result
, isPassed
, runTest
) where
data Test
= forall a. (Eq a, Show a) => Predicate String (a -> Bool) a
| forall a. (Eq a, Show a) => Expect String (a -> a -> Bool) a a
data Result
= Passed String
| forall a. (Show a) => Failed String a a
instance Show Result where
show :: Result -> String
show (Failed String
n a
e a
a) =
String
"FAILED: " forall a. [a] -> [a] -> [a]
++ String
n forall a. [a] -> [a] -> [a]
++
String
"\nEXPECTED: " forall a. [a] -> [a] -> [a]
++ forall a. Show a => a -> String
show a
e forall a. [a] -> [a] -> [a]
++
String
"\nACTUAL: " forall a. [a] -> [a] -> [a]
++ forall a. Show a => a -> String
show a
a
show (Passed String
n) =
String
"PASSED: " forall a. [a] -> [a] -> [a]
++ String
n
isPassed :: Result -> Bool
isPassed :: Result -> Bool
isPassed (Passed String
_) = Bool
True
isPassed Result
_ = Bool
False
runTest :: Test -> Result
runTest :: Test -> Result
runTest (Predicate String
n a -> Bool
p a
v) | a -> Bool
p a
v = String -> Result
Passed String
n
| Bool
otherwise = forall a. Show a => String -> a -> a -> Result
Failed String
n Bool
True Bool
False
runTest (Expect String
n a -> a -> Bool
f a
e a
a) | a -> a -> Bool
f a
e a
a = String -> Result
Passed String
n
| Bool
otherwise = forall a. Show a => String -> a -> a -> Result
Failed String
n a
e a
a