MergeStructs: panic when unexpected property kind is found

merge_structs.go

@@ -53,7 +53,6 @@ func MergeStructs(responses interface{}, mergedResp interface{}) {
 		responseValue := responsesValue.Index(index)
 
 		for fieldnum := 0; fieldnum < numFields; fieldnum++ {
-			// field := respType.Field(fieldnum)
 			fieldVal := responseValue.Field(fieldnum)
 
 			// Skip unexported fields.
@@ -61,7 +60,7 @@ func MergeStructs(responses interface{}, mergedResp interface{}) {
 				continue
 			}
 
-			// fmt.Printf("  - field %d: %10v ", fieldnum, field.Name)
+			// fmt.Printf("  - field %d: %10v ", fieldnum, respType.Field(fieldnum).Name)
 			useValue := false
 			switch fieldVal.Kind() {
 			case reflect.Ptr:
@@ -73,8 +72,11 @@ func MergeStructs(responses interface{}, mergedResp interface{}) {
 			case reflect.Bool:
 				useValue = fieldVal.Bool()
 				// fmt.Printf("is bool   : %v", useValue)
+			case reflect.Int:
+				useValue = fieldVal.Int() != 0
+				// fmt.Printf("is int    : %v", useValue)
 			default:
-				// fmt.Printf("is kind   : %v (not using)", fieldVal.Kind())
+				panic(fmt.Sprintf("field %s is of unmergeable kind %v", respType.Field(fieldnum).Name, fieldVal.Kind()))
 			}
 			// fmt.Println()
 
@@ -84,7 +86,6 @@ func MergeStructs(responses interface{}, mergedResp interface{}) {
 
 			resultField := resultValue.Field(fieldnum)
 			resultField.Set(fieldVal)
-
 		}
 	}
 }