Fix tests expected responses due to changes in pg11 (#1268)

test/Feature/JsonOperatorSpec.hs

@@ -10,8 +10,10 @@ import Network.Wai (Application)
 
 import Protolude hiding (get)
 
-spec :: SpecWith Application
-spec = describe "json and jsonb operators" $ do
+import PostgREST.Types (PgVersion, pgVersion112)
+
+spec :: PgVersion -> SpecWith Application
+spec actualPgVersion = describe "json and jsonb operators" $ do
   context "Shaping response with select parameter" $ do
     it "obtains a json subfield one level with casting" $
       get "/complex_items?id=eq.1&select=settings->>foo::json" `shouldRespondWith`
@@ -52,14 +54,28 @@ spec = describe "json and jsonb operators" $ do
     -- this works fine for /rpc/unexistent requests, but for this case a 500 seems more appropriate
     it "fails when a double arrow ->> is followed with a single arrow ->" $ do
       get "/json_arr?select=data->>c->1"
-        `shouldRespondWith` [json|
+        `shouldRespondWith` (
+        if actualPgVersion >= pgVersion112 then
+        [json|
+          {"hint":"No operator matches the given name and argument types. You might need to add explicit type casts.",
+           "details":null,"code":"42883","message":"operator does not exist: text -> integer"} |]
+           else
+        [json|
           {"hint":"No operator matches the given name and argument type(s). You might need to add explicit type casts.",
            "details":null,"code":"42883","message":"operator does not exist: text -> integer"} |]
+                            )
         { matchStatus  = 404 , matchHeaders = [] }
       get "/json_arr?select=data->>c->b"
-        `shouldRespondWith` [json|
+        `shouldRespondWith` (
+        if actualPgVersion >= pgVersion112 then
+        [json|
+          {"hint":"No operator matches the given name and argument types. You might need to add explicit type casts.",
+           "details":null,"code":"42883","message":"operator does not exist: text -> unknown"} |]
+           else
+        [json|
           {"hint":"No operator matches the given name and argument type(s). You might need to add explicit type casts.",
            "details":null,"code":"42883","message":"operator does not exist: text -> unknown"} |]
+                            )
         { matchStatus  = 404 , matchHeaders = [] }
 
     context "with array index" $ do