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semantic/test/Proto3/Roundtrip.hs

39 lines
1.3 KiB
Haskell

{-# LANGUAGE TypeApplications #-}
module Proto3.Roundtrip (spec) where
import SpecHelpers
import Data.Span
import qualified Data.ByteString.Lazy as L
import Data.Source
import Proto3.Suite
import qualified Proto3.Wire.Encode as E
shouldRoundtrip :: (Eq a, Show a, Message a) => a -> Expectation
shouldRoundtrip a = go a `shouldBe` Right a
where go = fromByteString . L.toStrict . toLazyByteString
spec :: Spec
spec = parallel $ do
describe "spans" $
prop "roundtrips" $
\sp -> shouldRoundtrip @Span sp
describe "blobs" $ do
it "should roundtrip given a Message instance" $ do
let bl = Blob (fromUTF8 "puts 'hi'") "example.rb" Ruby
shouldRoundtrip bl
describe "languages" $ do
-- If this test broke, it means you've probably added another 'Language'.
-- Add it to the list of languages below and everything should be good,
-- as long as you added it in a way that doesn't break prior Enum encodings.
it "should match up with Enum declarations" $ do
let go :: (Primitive f, MessageField f) => [f] -> [L.ByteString]
go x = E.toLazyByteString . encodePrimitive (fieldNumber 0) <$> x
let ints = [0..fromEnum (maxBound @Language)]
let langs = [Unknown, Go, Haskell, Java, JavaScript, JSON,
JSX, Markdown, Python, Ruby, TypeScript, PHP]
go ints `shouldBe` go langs