OpenAPI (#251): lookup other response codes

Pinafore/pinafore-docgen/test/golden/openapi/petstore-expanded.ref

@@ -6,24 +6,22 @@
 
 **<code>paths\.Info\.</code>**<code> : List\. Text\.</code>
 
-**<code>functions\.Info\.</code>**<code> : List\. Text\.</code>
-
-**<code>findPets\.</code>**<code> : List\. Text\. \-\> Integer\. \-\> Action\. Text\.</code>
+**<code>findPets\.</code>**<code> : List\. Text\. \-\> Integer\. \-\> Action\. (List\. (Text\. \*: Text\. \*: Integer\. \*: Unit\.))</code>
 
 > Returns all pets from the system that the user has access to
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 > 
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 > 
-**<code>addPet\.</code>**<code> : Action\. Text\.</code>
+**<code>addPet\.</code>**<code> : Action\. (Text\. \*: Text\. \*: Integer\. \*: Unit\.)</code>
 
 > Creates a new pet in the store. Duplicates are allowed
 > 
-**<code>find\_\_pet\_\_by\_\_id\.</code>**<code> : Integer\. \-\> Action\. Text\.</code>
+**<code>find\_\_pet\_\_by\_\_id\.</code>**<code> : Integer\. \-\> Action\. (Text\. \*: Text\. \*: Integer\. \*: Unit\.)</code>
 
 > Returns a user based on a single ID, if the user does not have access to the pet
 > 
-**<code>deletePet\.</code>**<code> : Integer\. \-\> Action\. Text\.</code>
+**<code>deletePet\.</code>**<code> : Integer\. \-\> Action\. Unit\.</code>
 
 > deletes a single pet based on the ID supplied
 > 

Pinafore/pinafore-webapi/lib/Pinafore/WebAPI/OpenAPI.hs

@@ -211,14 +211,17 @@ importOpenAPI t = do
         mkOperationFunction :: (Operation, Text, Text) -> M (LibraryStuff ())
         mkOperationFunction (op, opname, path) = do
             (name, params) <- operationToFunction op
+            let lookupResponse code = InsOrd.lookup code $ _responsesResponses $ _operationResponses op
             responseref <-
-                maybeToM "no default response" $ InsOrd.lookup 200 $ _responsesResponses $ _operationResponses op
+                maybeToM "no default response" $ lookupResponse 200 <|> lookupResponse 201 <|> lookupResponse 204
             response <- getReferenced _componentsResponses responseref
-            mto <-
-                maybeToM "no known response content-type" $ InsOrd.lookup "application/json" $ _responseContent response
-            rschemaref <- maybeToM "no response schema" $ _mediaTypeObjectSchema mto
-            rschema <- getReferenced _componentsSchemas rschemaref
-            rjt <- schemaToJSONType rschema
+            rjt <-
+                case InsOrd.lookup "application/json" $ _responseContent response of
+                    Just mto -> do
+                        rschemaref <- maybeToM "no response schema" $ _mediaTypeObjectSchema mto
+                        rschema <- getReferenced _componentsSchemas rschemaref
+                        schemaToJSONType rschema
+                    Nothing -> return NullJSONType
             MkIOShimWit responseType responseF <- mkResponse rjt
             func <- mkFunc (actionShimWit responseType) params
             let