| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| // |
| |
| package testutils |
| |
| import ( |
| "github.com/ajankovic/xdiff" |
| "github.com/ajankovic/xdiff/parser" |
| "github.com/pkg/errors" |
| "github.com/rs/zerolog/log" |
| "os" |
| ) |
| |
| func CompareResults(actualString []byte, referenceString []byte) error { |
| // Now parse the xml strings of the actual and the reference in xdiff's dom |
| p := parser.New() |
| actual, err := p.ParseBytes(actualString) |
| if err != nil { |
| return errors.Wrap(err, "Error parsing actual input") |
| } |
| reference, err := p.ParseBytes(referenceString) |
| if err != nil { |
| return errors.Wrap(err, "Error parsing reference input") |
| } |
| // Use XDiff to actually do the comparison |
| diff, err := xdiff.Compare(actual, reference) |
| if err != nil { |
| return errors.Wrap(err, "Error comparing xml trees") |
| } |
| if diff != nil { |
| cleanDiff := make([]xdiff.Delta, 0) |
| for _, delta := range diff { |
| if delta.Operation == xdiff.Delete && delta.Subject.Value == nil || delta.Operation == xdiff.Insert && delta.Subject.Value == nil { |
| log.Info().Msgf("We ignore empty elements which should be deleted %v", delta) |
| continue |
| } |
| cleanDiff = append(cleanDiff, delta) |
| } |
| |
| enc := xdiff.NewTextEncoder(os.Stdout) |
| if err := enc.Encode(diff); err != nil { |
| return errors.Wrap(err, "Error outputting results") |
| } |
| if len(cleanDiff) <= 0 { |
| log.Warn().Msg("We only found non relevant changes") |
| return nil |
| } else { |
| return errors.New("there were differences: Expected: \n" + string(referenceString) + "\nBut Got: \n" + string(actualString)) |
| } |
| } |
| return nil |
| } |