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using System;
using System.Xml;
using NUnit.Framework;
namespace MonoTests
{
public class XmlComparer
{
[Flags]
public enum Flags {
IgnoreNone=0,
IgnoreAttribOrder=1,
}
Flags flags;
bool ignoreWS = true;
string lastCompare = "";
string _actual = "";
string _expected = "";
public XmlComparer (Flags flags, bool ignoreWS)
{
this.flags = flags;
this.ignoreWS = ignoreWS;
}
public XmlComparer (Flags flags) : this (flags, true)
{
}
public XmlComparer () : this (Flags.IgnoreAttribOrder)
{
}
public bool AreEqualAttribs (XmlAttributeCollection expected, XmlAttributeCollection actual)
{
if (expected.Count != actual.Count)
return false;
for (int i=0; i<expected.Count; i++) {
if ((flags & Flags.IgnoreAttribOrder) != 0) {
string ln = expected[i].LocalName;
string ns = expected[i].NamespaceURI;
string val = expected[i].Value;
_expected = ns+":"+ln+"="+val;
XmlAttribute atr2 = actual[ln, ns];
_actual = atr2 == null ? "<<missing>>" : ns + ":" + ln + "=" + atr2.Value;
if (atr2 == null || atr2.Value.Trim().ToLower() != val.Trim().ToLower())
return false;
} else {
if (expected [i].LocalName != actual [i].LocalName)
return false;
if (expected [i].NamespaceURI != actual [i].NamespaceURI)
return false;
if (expected [i].Value.Trim().ToLower() != actual [i].Value.Trim().ToLower())
return false;
}
}
return true;
}
public bool AreEqualNodeList (XmlNodeList expected, XmlNodeList actual)
{
if (expected.Count != actual.Count)
return false;
for (int i=0; i<expected.Count; i++) {
if (!AreEqual (expected[i], actual[i]))
return false;
}
return true;
}
public bool AreEqual (XmlNode expected, XmlNode actual)
{
lastCompare = expected.OuterXml + "\n" + actual.OuterXml;
_actual = actual.OuterXml;
_expected = expected.OuterXml;
// skip XmlDeclaration
if ((expected.NodeType == XmlNodeType.XmlDeclaration) &&
(actual.NodeType == XmlNodeType.XmlDeclaration))
return true;
if (expected.NodeType != actual.NodeType)
return false;
if (expected.LocalName != actual.LocalName)
return false;
if (expected.NamespaceURI != actual.NamespaceURI)
return false;
if (expected.Attributes != null && actual.Attributes != null) {
if (!AreEqualAttribs (expected.Attributes, actual.Attributes))
return false;
_actual = actual.OuterXml;
_expected = expected.OuterXml;
}
else //one of nodes has no attrs
if (expected.Attributes != null || actual.Attributes != null)
return false;//and another has some
if (!expected.HasChildNodes && !actual.HasChildNodes) {
string val1 = expected.Value;
string val2 = actual.Value;
if (ignoreWS) //ignore white spaces
{
if (val1 != null)
val1 = val1.Trim().Replace("\r\n", "\n");
if (val2 != null)
val2 = val2.Trim().Replace("\r\n", "\n");
}
return val1 == val2;
}
else {//one of nodes has some children
if (!expected.HasChildNodes || !actual.HasChildNodes)
return false;//and another has none
return AreEqualNodeList (expected.ChildNodes, actual.ChildNodes);
}
}
public string LastCompare
{
get {return lastCompare;}
}
public string Actual
{
get { return _actual; }
}
public string Expected
{
get { return _expected; }
}
public static void AssertAreEqual (string expected, string actual) {
AssertAreEqual (expected, actual, String.Empty);
}
public static void AssertAreEqual (string expected, string actual, string msg) {
try {
XmlDocument or = new XmlDocument ();
or.LoadXml (expected);
XmlDocument dr = new XmlDocument ();
dr.LoadXml (actual);
XmlComparer comparer = new XmlComparer ();
if (!comparer.AreEqual (or, dr))
Assert.AreEqual (comparer.Expected, comparer.Actual, msg);
}
catch (AssertionException) {
throw;
}
catch (Exception e) {
//swallow e when there is XML error and fallback
//to the text comparison
Assert.AreEqual (expected, actual, msg);
}
}
}
}
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