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//
// System.Xml.XmlTextWriterTests
//
// Authors:
// Kral Ferch <kral_ferch@hotmail.com>
// Martin Willemoes Hansen <mwh@sysrq.dk>
//
// (C) 2002 Kral Ferch
// (C) 2003 Martin Willemoes Hansen
//
using System;
using System.Xml;
using System.Collections;
using NUnit.Framework;
namespace MonoTests.System.Xml
{
[TestFixture]
public class XmlNodeListTests
{
XmlDocument document;
XmlElement documentElement;
XmlElement element;
XmlNode node;
Object obj;
IEnumerator enumerator;
int index;
[SetUp]
public void GetReady ()
{
document = new XmlDocument ();
}
[Test]
public void NodeTypesThatCantHaveChildren ()
{
document.LoadXml ("<foo>bar</foo>");
documentElement = document.DocumentElement;
node = documentElement.FirstChild;
Assert.AreEqual (node.NodeType, XmlNodeType.Text, "Expected a text node.");
Assert.AreEqual (node.HasChildNodes, false, "Shouldn't have children.");
Assert.AreEqual (node.ChildNodes.Count, 0, "Should be empty node list.");
Assert.AreEqual (node.GetEnumerator().MoveNext(), false, "Should be empty node list.");
}
[Test]
public void ZeroChildren ()
{
document.LoadXml ("<foo/>");
documentElement = document.DocumentElement;
Assert.AreEqual (documentElement.GetEnumerator().MoveNext(), false, "Should be empty node list.");
}
[Test]
public void OneChild ()
{
document.LoadXml ("<foo><child1/></foo>");
documentElement = document.DocumentElement;
Assert.AreEqual (documentElement.ChildNodes.Count, 1, "Incorrect number of children returned from Count property.");
index = 1;
foreach (XmlNode childNode in documentElement.ChildNodes)
{
Assert.AreEqual ("child" + index.ToString(), childNode.LocalName, "Enumerator didn't return correct node.");
index++;
}
Assert.AreEqual (index, 2, "foreach didn't loop over all children correctly.");
}
[Test]
public void MultipleChildren ()
{
document.LoadXml ("<foo><child1/><child2/><child3/></foo>");
element = document.DocumentElement;
Assert.AreEqual (element.ChildNodes.Count, 3, "Incorrect number of children returned from Count property.");
Assert.IsNull (element.ChildNodes [-1], "Index less than zero should have returned null.");
Assert.IsNull (element.ChildNodes [3], "Index greater than or equal to Count should have returned null.");
Assert.AreEqual (element.FirstChild, element.ChildNodes[0], "Didn't return the correct child.");
Assert.AreEqual ("child1", element.ChildNodes[0].LocalName, "Didn't return the correct child.");
Assert.AreEqual ("child2", element.ChildNodes[1].LocalName, "Didn't return the correct child.");
Assert.AreEqual ("child3", element.ChildNodes[2].LocalName, "Didn't return the correct child.");
index = 1;
foreach (XmlNode childNode in element.ChildNodes)
{
Assert.AreEqual ("child" + index.ToString(), childNode.LocalName, "Enumerator didn't return correct node.");
index++;
}
Assert.AreEqual (index, 4, "foreach didn't loop over all children correctly.");
}
[Test]
public void AppendChildAffectOnEnumeration ()
{
document.LoadXml ("<foo><child1/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
Assert.AreEqual (enumerator.MoveNext(), true, "MoveNext should have succeeded.");
Assert.AreEqual (enumerator.MoveNext(), false, "MoveNext should have failed.");
enumerator.Reset();
Assert.AreEqual (enumerator.MoveNext(), true, "MoveNext should have succeeded.");
element.AppendChild(document.CreateElement("child2"));
Assert.AreEqual (enumerator.MoveNext(), true, "MoveNext should have succeeded.");
Assert.AreEqual (enumerator.MoveNext(), false, "MoveNext should have failed.");
}
[Test]
public void RemoveChildAffectOnEnumeration ()
{
document.LoadXml ("<foo><child1/><child2/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
element.RemoveChild(element.FirstChild);
enumerator.MoveNext();
Assert.AreEqual (((XmlElement)enumerator.Current).LocalName, "child2", "Expected child2 element.");
}
[Test]
public void RemoveChildAffectOnEnumerationWhenEnumeratorIsOnRemovedChild ()
{
document.LoadXml ("<foo><child1/><child2/><child3/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator ();
enumerator.MoveNext ();
enumerator.MoveNext ();
Assert.AreEqual ("child2", ((XmlElement)enumerator.Current).LocalName, "Expected child2 element.");
Assert.AreEqual ("child2", element.FirstChild.NextSibling.LocalName, "Expected child2 element.");
element.RemoveChild (element.FirstChild.NextSibling);
enumerator.MoveNext ();
try {
element = (XmlElement) enumerator.Current;
Assert.Fail ("Expected an InvalidOperationException.");
} catch (InvalidOperationException) { }
}
// TODO: Take the word save off front of this method when XmlNode.ReplaceChild() is implemented.
public void saveTestReplaceChildAffectOnEnumeration ()
{
document.LoadXml ("<foo><child1/><child2/></foo>");
element = document.DocumentElement;
node = document.CreateElement("child3");
enumerator = element.GetEnumerator();
Assert.AreEqual (enumerator.MoveNext(), true, "MoveNext should have succeeded.");
element.ReplaceChild(node, element.LastChild);
enumerator.MoveNext();
Assert.AreEqual (((XmlElement)enumerator.Current).LocalName, "child3", "Expected child3 element.");
Assert.AreEqual (enumerator.MoveNext(), false, "MoveNext should have failed.");
}
[Test]
public void RemoveOnlyChildAffectOnEnumeration ()
{
document.LoadXml ("<foo><child1/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
element.RemoveChild(element.FirstChild);
Assert.AreEqual (enumerator.MoveNext(), false, "MoveNext should have failed.");
}
// TODO: Take the word save off front of this method when XmlNode.RemoveAll() is fully implemented.
public void saveTestRemoveAllAffectOnEnumeration ()
{
document.LoadXml ("<foo><child1/><child2/><child3/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
Assert.AreEqual (element.ChildNodes.Count, 3, "Expected 3 children.");
Assert.AreEqual (enumerator.MoveNext(), true, "MoveNext should have succeeded.");
element.RemoveAll();
Assert.AreEqual (enumerator.MoveNext(), false, "MoveNext should have failed.");
}
[Test]
public void CurrentBeforeFirstNode ()
{
document.LoadXml ("<foo><child1/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
try
{
obj = enumerator.Current;
Assert.Fail ("Calling Current property before first node in list should have thrown InvalidOperationException.");
} catch (InvalidOperationException) { }
}
[Test]
public void CurrentAfterLastNode ()
{
document.LoadXml ("<foo><child1/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
enumerator.MoveNext();
enumerator.MoveNext();
try
{
obj = enumerator.Current;
Assert.Fail ("Calling Current property after last node in list should have thrown InvalidOperationException.");
}
catch (InvalidOperationException) { }
}
[Test]
public void CurrentDoesntMove ()
{
document.LoadXml ("<foo><child1/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
enumerator.MoveNext();
Assert.AreEqual (Object.ReferenceEquals(enumerator.Current, enumerator.Current), true, "Consecutive calls to Current property should yield same reference.");
}
[Test]
public void Reset ()
{
document.LoadXml ("<foo><child1/><child2/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
enumerator.MoveNext();
enumerator.MoveNext();
Assert.AreEqual (((XmlElement)enumerator.Current).LocalName, "child2", "Expected child2.");
enumerator.Reset();
enumerator.MoveNext();
Assert.AreEqual (((XmlElement)enumerator.Current).LocalName, "child1", "Expected child1.");
}
[Test]
public void ReturnNullWhenIndexIsOutOfRange ()
{
document.LoadXml ("<root><foo/></root>");
XmlNodeList nl = document.DocumentElement.GetElementsByTagName ("bar");
Assert.AreEqual (0, nl.Count, "empty list. count");
try {
Assert.IsNull (nl [0], "index 0");
Assert.IsNull (nl [1], "index 1");
Assert.IsNull (nl [-1], "index -1");
} catch (ArgumentOutOfRangeException) {
Assert.Fail ("don't throw index out of range.");
}
}
}
}
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