Golang assert two XML are equal

main_test.go

package main_test

import (
	"encoding/xml"
	"io"
	"testing"

	"github.com/stretchr/testify/assert"
)

func assertXMLEqual(t *testing.T, expected io.Reader, obtained io.Reader) {
	var expec node
	var obt node
	var err error

	err = xml.NewDecoder(expected).Decode(&expec)
	assert.Nil(t, err)
	err = xml.NewDecoder(obtained).Decode(&obt)
	assert.Nil(t, err)

	assert.Equal(t, expec, obt)
}

type node struct {
	XMLName xml.Name
	Attrs   []xml.Attr `xml:",any,attr"`
	Content string     `xml:",innerxml"`
	Nodes   []node     `xml:",any"`
}

func (n *node) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	type inNode node

	err := d.DecodeElement((*inNode)(n), &start)
	if err != nil {
		return err
	}

	//Discard content if there are child nodes
	if len(n.Nodes) > 0 {
		n.Content = ""
	}
	return nil
}