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TestNilsson_01.hs
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TestNilsson_01.hs
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{-
TRANSFORMERZ - Monad Transformer in vanilla Haskell
Nothing imported - just code
Author: Marco Faustinelli (contacts@faustinelli.net)
Web: http://faustinelli.net/
http://faustinelli.wordpress.com/
Version: 1.0
The MIT License - Copyright (c) 2015 Transformerz Project
-}
module TestNilsson_01 where
import Data.Maybe
import qualified Data.Map as Map
import Text.Show.Functions
import Test.HUnit
import Nilsson_01
-- Expressions for exercises
-- var xxxx, yyyy
watIsXxxx = Var "xxxx"
watIsYyyy = Var "yyyy"
two_vars_env = Map.insert "xxxx" (IntVal 123) (Map.insert "yyyy" (IntVal 234) Map.empty)
xPlusY = Plus (Var "xxxx") (Var "yyyy")
-- \x -> x
lambdina = Lambda "x" (Var "x")
lambdona = Lambda "x" (Lambda "y" (Plus (Var "x") (Var "y")))
-- 12 + (\x -> x)(4 + 2)
sample = Plus (Lit 12) (App lambdina (Plus (Lit 4) (Lit 2))) -- IntVal 18
samplone = App (App lambdona (Lit 4)) (Var "xxxx") -- IntVal (4 + xxxx)
----------------------------
testEval0WatIsXxxx :: Test
testEval0WatIsXxxx =
TestCase $ assertEqual "eval0 should lookup a var"
(IntVal 123) (eval0 two_vars_env watIsXxxx)
testEval0WatIsXPlusY :: Test
testEval0WatIsXPlusY =
TestCase $ assertEqual "eval0 should sum two vars"
(IntVal 357) (eval0 two_vars_env xPlusY)
testEval0SimpleApp :: Test
testEval0SimpleApp =
TestCase $ assertEqual "eval0 should make a simple application"
(IntVal 18) (eval0 Map.empty sample)
testEval0ComplexApp :: Test
testEval0ComplexApp =
TestCase $ assertEqual "eval0 should make a complex application"
(IntVal 127) (eval0 two_vars_env samplone)
testEval0CurriedApp :: Test
testEval0CurriedApp =
TestCase $ assertEqual "eval0 should make a partial application"
(FunVal "y" (Plus (Var "x") (Var "y")) (Map.fromList [("x",IntVal 4)]))
(eval0 Map.empty (App lambdona (Lit 4)))
----------------------------
testEval1WatIsXxxx :: Test
testEval1WatIsXxxx =
TestCase $ assertEqual "eval1 should lookup a var"
(I (IntVal 123)) (eval1 two_vars_env watIsXxxx)
testEval1WatIsXPlusY :: Test
testEval1WatIsXPlusY =
TestCase $ assertEqual "eval1 should sum two vars"
(IntVal 357) (unI $ eval1 two_vars_env xPlusY)
testEval1SimpleApp :: Test
testEval1SimpleApp =
TestCase $ assertEqual "eval1 should make a simple application"
(IntVal 18) (runEval1 $ eval1 Map.empty sample)
testEval1ComplexApp :: Test
testEval1ComplexApp =
TestCase $ assertEqual "eval1 should make a complex application"
(IntVal 127) (runEval1 $ eval1 two_vars_env samplone)
testEval1CurriedApp :: Test
testEval1CurriedApp =
TestCase $ assertEqual "eval1 should make a partial application"
(FunVal "y" (Plus (Var "x") (Var "y")) (Map.fromList [("x",IntVal 4)]))
(runEval1 $ eval1 Map.empty (App lambdona (Lit 4)))
-----------------------------------------
testEval2WatIsXxxx :: Test
testEval2WatIsXxxx =
TestCase $ assertEqual "eval2 should lookup a var"
(ET (I (Just (IntVal 4)))) (eval2 (Map.fromList [("x",IntVal 4)]) (Var "x"))
testEval2WatIsXxxx2 :: Test
testEval2WatIsXxxx2 =
TestCase $ assertEqual "eval2 should lookup a var"
(Just (IntVal 4)) (runEval2 $ eval2 (Map.fromList [("x",IntVal 4)]) (Var "x"))
testEval2WatIsXPlusY :: Test
testEval2WatIsXPlusY =
TestCase $ assertEqual "eval2 should sum two vars"
(Just (IntVal 357)) (runEval2 $ eval2 two_vars_env xPlusY)
testEval2WatIsXPlusCrash :: Test
testEval2WatIsXPlusCrash =
TestCase $ assertEqual "eval2 should fail summing stuff when one ain't IntVal"
(Nothing) (runEval2 $ eval2 Map.empty (Plus (Lit 123) lambdina))
testEval2SimpleApp :: Test
testEval2SimpleApp =
TestCase $ assertEqual "eval2 should make a simple application"
(Just (IntVal 18)) (runEval2 $ eval2 Map.empty sample)
testEval2ComplexApp :: Test
testEval2ComplexApp =
TestCase $ assertEqual "eval2 should make a complex application"
(Just (IntVal 127)) (runEval2 $ eval2 two_vars_env samplone)
testEval2CurriedApp :: Test
testEval2CurriedApp =
TestCase $ assertEqual "eval2 should make a partial application"
(Just (FunVal "y" (Plus (Var "x") (Var "y")) (Map.fromList [("x",IntVal 4)])))
(runEval2 $ eval2 Map.empty (App lambdona (Lit 4)))
testEval2CurriedApp2 :: Test
testEval2CurriedApp2 =
TestCase $ assertEqual "eval2 should spit Nothing in case of errors"
(Nothing)
(runEval2 $ eval2 Map.empty (App lambdona (Var "inesistente")))
{--}
-----------------------------------------
testEval3Lit123a :: Test
testEval3Lit123a =
TestCase $ assertEqual "eval3 should return a ET(ST) and update state"
(I (Just (IntVal 123), 1))
(unST (unET $ eval3 Map.empty (Lit 123)) 0)
testEval3Lit123b :: Test
testEval3Lit123b =
TestCase $ assertEqual "eval3 should evaluate a Literal and update state"
(Just (IntVal 123), 1)
(runEval3 0 (eval3 Map.empty (Lit 123)))
testEval3VarXxxx :: Test
testEval3VarXxxx =
TestCase $ assertEqual "eval3 should lookup a Var and update state"
(Just (IntVal 123), 1)
(runEval3 0 (eval3 two_vars_env watIsXxxx))
testEval3VarUndefined :: Test
testEval3VarUndefined =
TestCase $ assertEqual "eval3 should fail on non-existing vars and update state"
(Nothing, 1)
(runEval3 0 (eval3 two_vars_env (Var "zzzz")))
testEval3WatIsXPlusY :: Test
testEval3WatIsXPlusY =
TestCase $ assertEqual "eval3 should sum two vars"
(Just (IntVal 357), 3) (runEval3 0 $ eval3 two_vars_env xPlusY)
testEval3WatIsXPlusCrash :: Test
testEval3WatIsXPlusCrash =
TestCase $ assertEqual "eval3 should fail summing stuff when one ain't IntVal"
(Nothing, 3) (runEval3 0 $ eval3 Map.empty (Plus (Lit 123) lambdina))
testEval3SimpleApp :: Test
testEval3SimpleApp =
TestCase $ assertEqual "eval3 should make a simple application"
(Just (IntVal 18), 8) (runEval3 0 $ eval3 Map.empty sample)
testEval3ComplexApp :: Test
testEval3ComplexApp =
TestCase $ assertEqual "eval3 should make a complex application"
(Just (IntVal 127), 9) (runEval3 0 $ eval3 two_vars_env samplone)
testEval3CurriedApp :: Test
testEval3CurriedApp =
TestCase $ assertEqual "eval3 should make a partial application"
(Just (FunVal "y" (Plus (Var "x") (Var "y")) (Map.fromList [("x",IntVal 4)])), 4)
(runEval3 0 $ eval3 Map.empty (App lambdona (Lit 4)))
testEval3CurriedApp2 :: Test
testEval3CurriedApp2 =
TestCase $ assertEqual "eval3 should spit Nothing in case of errors"
(Nothing, 3)
(runEval3 0 $ eval3 Map.empty (App lambdona (Var "inesistente")))
---------------------------------------
main :: IO Counts
main = runTestTT $ TestList [
testEval0WatIsXxxx,
testEval0WatIsXPlusY,
testEval0SimpleApp,
testEval0ComplexApp,
testEval0CurriedApp,
testEval1WatIsXxxx,
testEval1WatIsXPlusY,
testEval1SimpleApp,
testEval1ComplexApp,
testEval1CurriedApp,
testEval2WatIsXxxx,
testEval2WatIsXxxx2,
testEval2WatIsXPlusY,
testEval2WatIsXPlusCrash,
testEval2SimpleApp,
testEval2ComplexApp,
testEval2CurriedApp,
testEval2CurriedApp2,
testEval3Lit123a,
testEval3Lit123b,
testEval3VarXxxx,
testEval3VarUndefined,
testEval3WatIsXPlusY,
testEval3WatIsXPlusCrash,
testEval3SimpleApp,
testEval3ComplexApp,
testEval3CurriedApp,
testEval3CurriedApp2
]