[go] Support for response status code ranges (OpenAPITools#10075)

Author: NathanBaulch

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -3906,9 +3906,9 @@ public CodegenOperation fromOperation(String path,
                 }
             }
             op.responses.sort((a, b) -> {
-                int aDefault = "0".equals(a.code) ? 1 : 0;
-                int bDefault = "0".equals(b.code) ? 1 : 0;
-                return aDefault - bDefault;
+                int aScore = a.isWildcard() ? 2 : a.isRange() ? 1 : 0;
+                int bScore = b.isWildcard() ? 2 : b.isRange() ? 1 : 0;
+                return Integer.compare(aScore, bScore);
             });
 
             if (methodResponse != null) {

modules/openapi-generator/src/main/resources/go/api.mustache

@@ -356,9 +356,22 @@ func (a *{{{classname}}}Service) {{nickname}}Execute(r {{#structPrefix}}{{&class
 		{{#dataType}}
 		{{^is1xx}}
 		{{^is2xx}}
+		{{#range}}
+		{{#is3xx}}
+		if localVarHTTPResponse.StatusCode >= 300 && localVarHTTPResponse.StatusCode < 400 {
+		{{/is3xx}}
+		{{#is4xx}}
+		if localVarHTTPResponse.StatusCode >= 400 && localVarHTTPResponse.StatusCode < 500 {
+		{{/is4xx}}
+		{{#is5xx}}
+		if localVarHTTPResponse.StatusCode >= 500
+		{{/is5xx}}
+		{{/range}}
+		{{^range}}
 		{{^wildcard}}
 		if localVarHTTPResponse.StatusCode == {{{code}}} {
 		{{/wildcard}}
+		{{/range}}
 			var v {{{dataType}}}
 			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 			if err != nil {

modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml

@@ -29,6 +29,24 @@ paths:
                 properties:
                   string:
                     $ref: '#/components/schemas/Foo'
+        4XX:
+          description: client error
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  string:
+                    $ref: '#/components/schemas/Foo'
+        404:
+          description: not found
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  string:
+                    $ref: '#/components/schemas/Foo'
   /pet:
     servers:
     - url: 'http://petstore.swagger.io/v2'

samples/openapi3/client/petstore/go/go-petstore/api/openapi.yaml

@@ -50,6 +50,18 @@ paths:
               schema:
                 $ref: '#/components/schemas/inline_response_default'
           description: response
+        "4XX":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/inline_response_default'
+          description: client error
+        "404":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/inline_response_default'
+          description: not found
   /pet:
     post:
       operationId: addPet