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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml.Linq;
using Xunit;
namespace Microsoft.TestCommon
{
/// <summary>
/// Assert class that compares two XML strings for equality. Namespaces are ignored during comparison
/// </summary>
public class XmlAssert
{
public void Equal(string expected, string actual, params RegexReplacement[] regexReplacements)
{
if (regexReplacements != null)
{
for (int i = 0; i < regexReplacements.Length; i++)
{
actual = regexReplacements[i].Regex.Replace(actual, regexReplacements[i].Replacement);
}
}
Equal(XElement.Parse(expected), XElement.Parse(actual));
}
public void Equal(XElement expected, XElement actual)
{
Assert.Equal(Normalize(expected).ToString(), Normalize(actual).ToString());
}
private static XElement Normalize(XElement element)
{
if (element.HasElements)
{
return new XElement(
Encode(element.Name),
Normalize(element.Attributes()),
Normalize(element.Elements()));
}
if (element.IsEmpty)
{
return new XElement(
Encode(element.Name),
Normalize(element.Attributes()));
}
else
{
return new XElement(
Encode(element.Name),
Normalize(element.Attributes()),
element.Value);
}
}
private static IEnumerable<XAttribute> Normalize(IEnumerable<XAttribute> attributes)
{
return attributes
.Where((attrib) => !attrib.IsNamespaceDeclaration)
.Select((attrib) => new XAttribute(Encode(attrib.Name), attrib.Value))
.OrderBy(a => a.Name.ToString());
}
private static IEnumerable<XElement> Normalize(IEnumerable<XElement> elements)
{
return elements
.Select(e => Normalize(e))
.OrderBy(a => a.ToString());
}
private static string Encode(XName name)
{
return string.Format("{0}_{1}", HttpUtility.UrlEncode(name.NamespaceName).Replace('%', '_'), name.LocalName);
}
}
}
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