Language/Symantic/Expr/Functor/Test.hs

   1 {-# LANGUAGE FlexibleContexts #-}
   2 {-# LANGUAGE GADTs #-}
   3 {-# LANGUAGE NoMonomorphismRestriction #-}
   4 {-# LANGUAGE ScopedTypeVariables #-}
   5 {-# LANGUAGE TypeOperators #-}
   6 {-# OPTIONS_GHC -fno-warn-missing-signatures #-}
   7
   8 module Expr.Functor.Test where
   9
  10 import Test.Tasty
  11 import Test.Tasty.HUnit
  12
  13 import Control.Arrow (left)
  14 import Data.Functor.Identity
  15 import Data.Proxy (Proxy(..))
  16 import Data.Text (Text)
  17 import Data.Type.Equality ((:~:)(Refl))
  18 import Prelude hiding ((&&), not, (||), (==), fmap, (+))
  19
  20 import Language.Symantic.Type
  21 import Language.Symantic.Expr as Expr
  22 import Language.Symantic.Repr
  23
  24 import AST.Test
  25
  26 -- * Expressions
  27 t = bool True
  28 f = bool False
  29 e1 = fmap (val $ \x -> x + int 1) (list $ int Prelude.<$> [1..3])
  30
  31 -- * Tests
  32 type Ex lam = Expr_Root
  33  (   Expr_Lambda_App lam
  34  .|. Expr_Lambda_Val lam
  35  .|. Expr_Maybe lam
  36  .|. Expr_List lam
  37  .|. Expr_Functor lam
  38  .|. Expr_Int
  39  .|. Expr_Bool
  40  )
  41 ex_from = root_expr_from (Proxy::Proxy (Ex lam)) (Proxy::Proxy lam)
  42
  43 (==>) ast expected =
  44         testCase (show ast) $
  45         case ex_from ast of
  46          Left err -> Left err @?= snd `left` expected
  47          Right (Exists_Type_and_Repr ty (Forall_Repr r)) ->
  48                 case expected of
  49                  Left (_, err) -> Right ("…"::String) @?= Left err
  50                  Right (ty_expected::Type_Root_of_Expr (Ex Identity) h, _::h, _::Text) ->
  51                         (>>= (@?= (\(_::Proxy h, err) -> err) `left` expected)) $
  52                         case ty `eq_type` ty_expected of
  53                          Nothing -> return $ Left $
  54                                 error_expr (Proxy::Proxy (Ex Identity)) $
  55                                 Error_Expr_Type_mismatch ast
  56                                  (Exists_Type ty)
  57                                  (Exists_Type ty_expected)
  58                          Just Refl -> do
  59                                 let h = runIdentity $ host_from_expr r
  60                                 return $
  61                                         Right
  62                                          ( ty
  63                                          , h
  64                                          , text_from_expr r
  65                                          -- , (text_from_expr :: Repr_String Identity h -> Text) r
  66                                          )
  67
  68 tests :: TestTree
  69 tests = testGroup "Functor"
  70  [ AST "fmap"
  71          [ AST "val"
  72                  [ AST "x" []
  73                  , AST "Int" []
  74                  , AST "+" [ AST "var" [AST "x" []]
  75                            , AST "int" [AST "1" []] ]
  76                  ]
  77          , AST "list"
  78                  [ AST "Int" []
  79                  , AST "int" [AST "1" []]
  80                  , AST "int" [AST "2" []]
  81                  , AST "int" [AST "3" []]
  82                  ]
  83          ] ==> Right
  84          ( type_list type_int
  85          , [2,3,4]
  86          , "fmap (\\x0 -> x0 + 1) [1, 2, 3]" )
  87  ]