44 lines
1.4 KiB
Go
44 lines
1.4 KiB
Go
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// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package prometheus_test
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"google.golang.org/protobuf/encoding/protojson"
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"google.golang.org/protobuf/proto"
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)
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// printlnNormalized is a helper function to compare proto messages in json format.
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// Without removing brittle, we can't assert that two proto messages in json/text format are equal.
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// Read more in https://github.com/golang/protobuf/issues/1121
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func printlnNormalized(m proto.Message) {
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fmt.Println(protoToNormalizedJSON(m))
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}
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// protoToNormalizedJSON works as printlnNormalized, but returns the string instead of printing.
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func protoToNormalizedJSON(m proto.Message) string {
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mAsJSON, err := protojson.Marshal(m)
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if err != nil {
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panic(err)
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}
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buffer := new(bytes.Buffer)
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if err := json.Compact(buffer, mAsJSON); err != nil {
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panic(err)
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}
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return buffer.String()
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}
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