[contrib] fix generated swagger issue for pointer fields

Author: ehsannm

contrib/swagger/swagger.go

@@ -299,7 +299,7 @@ Loop:
 		)
 	}
 
-	if p.Tag.Optional {
+	if p.Tag.Optional || p.Optional {
 		wrapFuncChain = wrapFuncChain.Add(
 			func(schema *spec.Schema) *spec.Schema {
 				spacer := ""

contrib/swagger/swagger_test.go

@@ -121,6 +121,13 @@ var _ = Describe("ToSwaggerDefinition", func() {
 		//  	W  []string   `json:"w"`
 		//  	TT [][]string `json:"tt"`
 		// }
+		// type sampleRes struct {
+		// 		Out1 int      `json:"out1"`
+		// 		Out2 string   `json:"out2"`
+		// 		Sub  subRes   `json:"sub"`
+		// 		Subs []subRes `json:"subs"`
+		// 		XSub *subRes  `json:"xSub"`
+		// }
 
 		d := swagger.ToSwaggerDefinition(ps.Contracts[0].Request.Message)
 		props := d.Properties.ToOrderedSchemaItems()
@@ -152,6 +159,9 @@ var _ = Describe("ToSwaggerDefinition", func() {
 		Expect(props[3].Name).To(Equal("subs"))
 		Expect(props[3].SchemaProps.Type[0]).To(Equal("array"))
 		Expect(props[3].SchemaProps.Items.Schema.Ref.String()).To(Equal("#/definitions/subRes"))
+		Expect(props[4].Name).To(Equal("xSub"))
+		Expect(props[4].SchemaProps.Ref.String()).To(Equal("#/definitions/subRes"))
+		Expect(props[4].SchemaProps.Description).To(Equal("[Optional]"))
 	})
 
 	It("Check Request for Contract[1].Response (anotherRes)", func() {