Fix POST, PATCH, DELETE with ?select= and empty body or return=minimal (#1471)

* add tests for POST, PATCH, DELETE when using ?select= with empty bodies or ret=min

* fix select with empty bodies and ret=min

* improved tests for default cases, fixed computed overloaded columns on empty-body?select= PATCH

test/Feature/DeleteSpec.hs

@@ -27,15 +27,30 @@ spec =
           { matchStatus  = 200
           , matchHeaders = ["Content-Range" <:> "*/1"]
           }
+
+      it "ignores ?select= when return not set or return=minimal" $ do
+        request methodDelete "/items?id=eq.3&select=id" [] ""
+          `shouldRespondWith` ""
+          { matchStatus  = 204
+          , matchHeaders = ["Content-Range" <:> "*/*"]
+          }
+        request methodDelete "/items?id=eq.3&select=id" [("Prefer", "return=minimal")] ""
+          `shouldRespondWith` ""
+          { matchStatus  = 204
+          , matchHeaders = ["Content-Range" <:> "*/*"]
+          }
+
       it "returns the deleted item and shapes the response" $
         request methodDelete "/complex_items?id=eq.2&select=id,name" [("Prefer", "return=representation")] ""
           `shouldRespondWith` [str|[{"id":2,"name":"Two"}]|]
           { matchStatus  = 200
           , matchHeaders = ["Content-Range" <:> "*/*"]
           }
+
       it "can rename and cast the selected columns" $
         request methodDelete "/complex_items?id=eq.3&select=ciId:id::text,ciName:name" [("Prefer", "return=representation")] ""
           `shouldRespondWith` [str|[{"ciId":"3","ciName":"Three"}]|]
+
       it "can embed (parent) entities" $
         request methodDelete "/tasks?id=eq.8&select=id,name,project:projects(id)" [("Prefer", "return=representation")] ""
           `shouldRespondWith` [str|[{"id":8,"name":"Code OSX","project":{"id":4}}]|]