Function toNormalizedJSON

prometheus/utils_test.go:53–64

toNormalizedJSON removes fake random space from proto JSON original marshaller. It is required, so we can compare proto messages in json format. Read more in https://github.com/golang/protobuf/issues/1121

(m proto.Message)

// It is required, so we can compare proto messages in json format.
// Read more in https://github.com/golang/protobuf/issues/1121
func toNormalizedJSON(m proto.Message) string {
	mAsJSON, err := protojson.Marshal(m)
	if err != nil {
		panic(err)
	}

	buffer := new(bytes.Buffer)
	if err := json.Compact(buffer, mAsJSON); err != nil {
		panic(err)
	}
	return buffer.String()
}