Pretty print message trace

[lsp-test.git] / src / Language / Haskell / LSP / Test / Parsing.hs

diff --git a/src/Language/Haskell/LSP/Test/Parsing.hs b/src/Language/Haskell/LSP/Test/Parsing.hs
index 3ecc53888b31f5090b64344a866d512b5dd1460b..2936b31347f9db69ecf4b1a3951c552336953cfb 100644 (file)
--- a/src/Language/Haskell/LSP/Test/Parsing.hs
+++ b/src/Language/Haskell/LSP/Test/Parsing.hs
@@ -10,6 +10,7 @@ import Control.Lens
 import Control.Monad.IO.Class
 import Control.Monad
 import Data.Aeson
+import Data.Aeson.Encode.Pretty
 import qualified Data.ByteString.Lazy.Char8 as B
 import Data.Conduit.Parser
 import Data.Maybe
@@ -42,9 +43,10 @@ satisfy pred = do
 
   if pred x
     then do
-      liftIO $ do
-        setSGR [SetColor Foreground Vivid Magenta]
-        putStrLn $ "<-- " ++ B.unpack (encodeMsg x)
+      shouldLog <- asks $ logMessages . config
+      liftIO $ when shouldLog $ do
+        setSGR [SetColor Foreground Dull Magenta]
+        putStrLn $ "<-- " ++ B.unpack (encodeMsgPretty x)
         setSGR [Reset]
       return x
     else empty
@@ -53,9 +55,8 @@ satisfy pred = do
 message :: forall a. (Typeable a, FromJSON a) => Session a
 message =
   let parser = decode . encodeMsg :: FromServerMessage -> Maybe a
-  in named (T.pack $ show $ head $ snd $ splitTyConApp $ last $ typeRepArgs $ typeOf parser) $ do
-    x <- satisfy (isJust . parser)
-    return $ castMsg x
+  in named (T.pack $ show $ head $ snd $ splitTyConApp $ last $ typeRepArgs $ typeOf parser) $
+    castMsg <$> satisfy (isJust . parser)
 
 -- | Matches if the message is a notification.
 anyNotification :: Session FromServerMessage
@@ -87,6 +88,9 @@ castMsg = fromMaybe (error "Failed casting a message") . decode . encodeMsg
 encodeMsg :: FromServerMessage -> B.ByteString
 encodeMsg = encode . genericToJSON (defaultOptions { sumEncoding = UntaggedValue })
 
+encodeMsgPretty :: FromServerMessage -> B.ByteString
+encodeMsgPretty = encodePretty . genericToJSON (defaultOptions { sumEncoding = UntaggedValue })
+
 -- | Matches if the message is a log message notification or a show message notification/request.
 loggingNotification :: Session FromServerMessage
 loggingNotification = named "Logging notification" $ satisfy shouldSkip