xml diff in python with xmltodict

test_xmldiff.py

import unittest

from xmldiff import XmlDiff


class XMLDiffTestCase(unittest.TestCase):
    def test_xml_equal(self):
        xml1 = """<a></a>"""
        xml2 = """<a></a>"""
        self.assertTrue(XmlDiff(xml1, xml2).equal())

    def test_xml_are_not_equal(self):
        xml1 = "<a></a>"
        xml2 = "<b></b>"
        self.assertFalse(XmlDiff(xml1, xml2).equal())

    def test_parameter_order_doesnt_matter(self):
        xml1 = """<a p1="1" p2="2"></a>"""
        xml2 = """<a p2="2" p1="1"></a>"""
        self.assertTrue(XmlDiff(xml1, xml2).equal())

    def test_newline_doesnt_matter(self):
        xml1 = """<a></a>"""
        xml2 = """<a>
        </a>"""
        self.assertTrue(XmlDiff(xml1, xml2).equal())

    def test_nested_tag(self):
        xml1 = """<a><b></b></a>"""
        xml2 = """
        <a>
            <b></b>
        </a>"""
        self.assertTrue(XmlDiff(xml1, xml2).equal())

    def test_nested_tag_not_equal(self):
        xml1 = """<a><b></b><c><d></d></c><e></e></a>"""
        xml2 = """
        <a>
            <b></b>
        </a>
        """
        self.assertFalse(XmlDiff(xml1, xml2).equal())

    def test_nested_tag_parameter_not_equal(self):
        xml1 = """<t t="r" v="1"><f><p k="a" v="2"/></f></t>"""
        xml2 = """
        <t t="r" v="1">
            <f>
                <p k="a" v="1"/>
            </f>
        </t>"""
        self.assertFalse(XmlDiff(xml1, xml2).equal())

    def test_double_tag_equal(self):
        xml1 = """<t t="r" v="1"><f><p k="a" v="1"/><p k="b" v="2"/></f></t>"""
        xml2 = """
        <t t="r" v="1">
            <f>
                <p k="a" v="1"/>
                <p k="b" v="2"/>
            </f>
        </t>"""
        self.assertTrue(XmlDiff(xml1, xml2).equal())

    def test_xml_equal_with_encoding(self):
        xml1 = """<?xml version='1.0' encoding='utf-8' standalone='yes'?>
        <Stats start="1275955200"   end="1276041599">
        </Stats>"""
        xml2 = """<?xml version='1.0' encoding='utf-8' standalone='yes'?>
        <Stats end="1276041599" start="1275955200" >
        </Stats>"""
        self.assertTrue(XmlDiff(xml1, xml2).equal())

xmldiff.py

import json
import xmltodict


class XmlDiff(object):
    def __init__(self, xml1, xml2):
        self.dict1 = json.loads(json.dumps((xmltodict.parse(xml1))))
        self.dict2 = json.loads(json.dumps((xmltodict.parse(xml2))))

    def equal(self):
        return self.dict1 == self.dict2