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