Fix #12

tests/Language/GraphQL/ParserSpec.hs

@@ -1,4 +1,5 @@
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
 module Language.GraphQL.ParserSpec
     ( spec
     ) where
@@ -11,8 +12,19 @@ import Test.Hspec ( Spec
                   , shouldSatisfy
                   )
 import Text.Megaparsec (parse)
+import Text.RawString.QQ (r)
 
 spec :: Spec
-spec = describe "Parser" $
+spec = describe "Parser" $ do
     it "accepts BOM header" $
         parse document "" "\xfeff{foo}" `shouldSatisfy` isRight
+
+    it "accepts block strings as argument" $
+        parse document "" [r|{
+              hello(text: """Argument""")
+            }|] `shouldSatisfy` isRight
+
+    it "accepts strings as argument" $
+        parse document "" [r|{
+              hello(text: "Argument")
+            }|] `shouldSatisfy` isRight