blob: 4eb3f4daef0d0ce82243678dc9fd72eaaf70e181 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
module Minilang.REPLSpec where
import Control.Exception (bracket)
import Data.Text.IO
import Minilang.REPL
import System.Directory (getTemporaryDirectory, removeFile)
import System.FilePath ((<.>), (</>))
import System.IO (IOMode (..), hClose, withFile)
import System.Posix.Temp (mkstemp)
import Test.Hspec
import Prelude hiding (lines, readFile, writeFile)
spec :: Spec
spec = parallel $
describe "MiniLang REPL" $ do
it "evaluates MiniLang terms read from pure Monad" $ do
let out =
withInput
["((lam (x) x) y)"]
out
`shouldBe` [ "Bye!",
"y : b"
]
it "shows error when trying to load a non-existent file" $ do
withInput [":load foo"]
`shouldBe` [ "Bye!",
"REPLError \"cannot load file foo in Pure interpreter\""
]
around withTempFile $
it "evaluates single MiniLang term read from IO" $ \fileName -> do
let outputFileName = fileName <> ".out"
writeFile
fileName
"(let ((Succ (lam (n z s) (s n))) \
\ (Zero (lam (z s) z))) \
\ Zero)"
_ <- withFile fileName ReadMode $ \hin ->
withFile outputFileName AppendMode $ \hout ->
withHandles hin hout
out <- readFile outputFileName
out
`shouldBe` "\955\928> (lam (z s) z) : c -> d -> c\n\955\928> Bye!\n"
withTempFile :: (String -> IO ()) -> IO ()
withTempFile =
bracket mkTempFile rmTempFile
where
mkTempFile = getTemporaryDirectory >>= \dir -> mkstemp (dir </> "test-repl") >>= \(fp, h) -> hClose h >> pure fp
rmTempFile fn = removeFile fn >> removeFile (fn <.> "out")
|
