public void AttributeMarkedChanged()
{
var doc1 = new XmlDocument();
doc1.LoadXml(@"
<root>
<child1 name1='child1' type1='elem1'>child1</child1>
<child2 name1='child2' type1='elem2'>child2</child2>
</root>"
);
// reordered xml but same values
var doc2 = new XmlDocument();
doc2.LoadXml(@"
<root>
<child1 type1='elem1' name1='DIFFERENT'>child1</child1>
<child2 name1='child2' type1='elem2'>child2</child2>
</root>"
);
var tree1 = new XTree(doc1);
var tree2 = new XTree(doc2);
XDiff.Diff(tree1, tree2);
Assert.AreEqual(tree1.Root.Match, MatchType.Change);
Assert.AreEqual(tree2.Root.Match, MatchType.Change);
Assert.AreEqual(tree1.Root.Children.Length, 2);
Assert.AreEqual(tree2.Root.Children.Length, 2);
Assert.AreEqual(tree1.Root.Elements.Length, 2);
Assert.AreEqual(tree2.Root.Elements.Length, 2);
Assert.AreEqual(tree1.Root.Elements[0].Match, MatchType.Change);
Assert.AreEqual(tree2.Root.Elements[0].Match, MatchType.Change);
Assert.AreEqual(tree1.Root.Elements[1].Match, MatchType.Match);
Assert.AreEqual(tree2.Root.Elements[1].Match, MatchType.Match);
Assert.AreEqual(tree1.Root.Elements[0].Attributes.Length, 2);
Assert.AreEqual(tree2.Root.Elements[0].Attributes.Length, 2);
Assert.AreEqual(tree1.Root.Elements[0].Texts.Length, 1);
Assert.AreEqual(tree2.Root.Elements[0].Texts.Length, 1);
Assert.AreEqual(tree1.Root.Elements[0].Texts[0].Match, MatchType.Match);
Assert.AreEqual(tree2.Root.Elements[0].Texts[0].Match, MatchType.Match);
Assert.AreEqual(tree1.Root.Elements[0].Attributes[0].Match, MatchType.Change);
Assert.AreEqual(tree2.Root.Elements[0].Attributes[0].Match, MatchType.Match);
Assert.AreEqual(tree1.Root.Elements[0].Attributes[1].Match, MatchType.Match);
Assert.AreEqual(tree2.Root.Elements[0].Attributes[1].Match, MatchType.Change);
Assert.AreEqual(tree1.Root.Elements[0].Attributes[0].Matching, tree2.Root.Elements[0].Attributes[1]);
}
/// <summary>
/// Compare and match the two trees
/// </summary>
public static void Diff(XTree tree1, XTree tree2)
{
if (tree1.Root.HashEquals(tree2.Root.Hash))
{
SetMatching(tree1.Root, tree2.Root, MatchType.Match);
return;
}
if (tree1.Root.Name != tree2.Root.Name)
{
SetMatching(tree1.Root, tree1.Root, MatchType.NoMatch);
return;
}
distanceLookup = new Dictionary<Tuple<XNode, XNode>, int>();
SetMatching(tree1.Root, tree2.Root, MatchType.Change);
DiffElements(tree1.Root, tree2.Root);
}
/// <summary>
/// Compare and match the two trees
/// </summary>
public static void Diff(XTree tree1, XTree tree2)
{
if (tree1.Root.HashEquals(tree2.Root.Hash))
{
SetMatching(tree1.Root, tree2.Root, MatchType.Match);
return;
}
if (tree1.Root.Name != tree2.Root.Name)
{
SetMatching(tree1.Root, tree1.Root, MatchType.NoMatch);
return;
}
distanceLookup = new Dictionary <Tuple <XNode, XNode>, int>();
SetMatching(tree1.Root, tree2.Root, MatchType.Change);
DiffElements(tree1.Root, tree2.Root);
}
private void AssertCanTransform(string sourceXml, string targetXml)
{
var doc1 = new XmlDocument();
doc1.LoadXml(sourceXml);
// reordered xml but same values
var doc2 = new XmlDocument();
doc2.LoadXml(targetXml);
var tree1 = new XTree(doc1);
var tree2 = new XTree(doc2);
XDiff.Diff(tree1, tree2);
var writer = new XdtDiffWriter();
var patch = writer.GetDiff(tree2);
var transformed = Transform(doc1, patch);
var transformedTree = new XTree(transformed);
Assert.IsFalse(Enumerable.SequenceEqual(tree1.Root.Hash, tree2.Root.Hash));
Assert.IsTrue(Enumerable.SequenceEqual(transformedTree.Root.Hash, tree2.Root.Hash));
}
public void DifferentXmlTextsAreDifferent()
{
var doc1 = new XmlDocument();
doc1.LoadXml(@"
<root>
<child1 name1='child1' type1='elem1'>child1</child1>
<child2 name2='child2' type2='elem2'>child2</child2>
</root>"
);
var doc2 = new XmlDocument();
doc2.LoadXml(@"
<root>
<child1 name1='child1' type1='elem1'>child1</child1>
<child2 name2='child2' type2='elem2'>DIFFERENT</child2>
</root>"
);
var tree1 = new XTree(doc1);
var tree2 = new XTree(doc2);
Assert.IsFalse(Enumerable.SequenceEqual(tree1.Root.Hash, tree2.Root.Hash));
}
private XmlDocument GetPatch(string sourceXml, string targetXml)
{
var doc1 = new XmlDocument();
doc1.LoadXml(sourceXml);
// reordered xml but same values
var doc2 = new XmlDocument();
doc2.LoadXml(targetXml);
var tree1 = new XTree(doc1);
var tree2 = new XTree(doc2);
XDiff.Diff(tree1, tree2);
var writer = new XdtDiffWriter();
return writer.GetDiff(tree2);
}
public void IsomorphicXmlAreEqual()
{
var doc1 = new XmlDocument();
doc1.LoadXml(@"
<root>
<child1 name1='child1' type1='elem1'>child1</child1>
<child2 name2='child2' type2='elem2'>child2</child2>
</root>"
);
// reordered xml but same values
var doc2 = new XmlDocument();
doc2.LoadXml(@"
<root>
<child2 type2='elem2' name2='child2'>child2</child2>
<child1 type1='elem1' name1='child1'>child1</child1>
</root>"
);
var tree1 = new XTree(doc1);
var tree2 = new XTree(doc2);
Assert.IsTrue(Enumerable.SequenceEqual(tree1.Root.Hash, tree2.Root.Hash));
}
public void SingleElement()
{
var doc1 = new XmlDocument();
doc1.LoadXml("<root></root>");
var tree1 = new XTree(doc1);
Assert.AreEqual(tree1.Root.Children.Length, 0);
}