Fix flaky CI (#278)

openapi2/openapi2.go

@@ -10,6 +10,7 @@ package openapi2
 import (
 	"fmt"
 	"net/http"
+	"sort"
 
 	"github.com/getkin/kin-openapi/jsoninfo"
 	"github.com/getkin/kin-openapi/openapi3"
@@ -168,6 +169,20 @@ func (operation *Operation) UnmarshalJSON(data []byte) error {
 
 type Parameters []*Parameter
 
+var _ sort.Interface = Parameters{}
+
+func (ps Parameters) Len() int      { return len(ps) }
+func (ps Parameters) Swap(i, j int) { ps[i], ps[j] = ps[j], ps[i] }
+func (ps Parameters) Less(i, j int) bool {
+	if ps[i].Name != ps[j].Name {
+		return ps[i].Name < ps[j].Name
+	}
+	if ps[i].In != ps[j].In {
+		return ps[i].In < ps[i].In
+	}
+	return ps[i].Ref < ps[j].Ref
+}
+
 type Parameter struct {
 	openapi3.ExtensionProps
 	Ref              string              `json:"$ref,omitempty"`

openapi2conv/openapi2_conv.go

@@ -597,6 +597,7 @@ func FromV3Swagger(swagger *openapi3.Swagger) (*openapi2.Swagger, error) {
 			}
 			params = append(params, p)
 		}
+		sort.Sort(params)
 		result.Paths[path].Parameters = params
 	}
 
@@ -922,6 +923,7 @@ func FromV3Operation(swagger *openapi3.Swagger, operation *openapi3.Operation) (
 			result.Consumes = consumesToArray(consumes)
 		}
 	}
+	sort.Sort(result.Parameters)
 
 	if responses := operation.Responses; responses != nil {
 		resultResponses, err := FromV3Responses(responses, &swagger.Components)