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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 : Assertion
{
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;
AssertEquals ("Expected a text node.", node.NodeType, XmlNodeType.Text);
AssertEquals ("Shouldn't have children.", node.HasChildNodes, false);
AssertEquals ("Should be empty node list.", node.ChildNodes.Count, 0);
AssertEquals ("Should be empty node list.", node.GetEnumerator().MoveNext(), false);
}
[Test]
public void ZeroChildren ()
{
document.LoadXml ("<foo/>");
documentElement = document.DocumentElement;
AssertEquals ("Should be empty node list.", documentElement.GetEnumerator().MoveNext(), false);
}
[Test]
public void OneChild ()
{
document.LoadXml ("<foo><child1/></foo>");
documentElement = document.DocumentElement;
AssertEquals ("Incorrect number of children returned from Count property.", documentElement.ChildNodes.Count, 1);
index = 1;
foreach (XmlNode childNode in documentElement.ChildNodes)
{
AssertEquals ("Enumerator didn't return correct node.", "child" + index.ToString(), childNode.LocalName);
index++;
}
AssertEquals ("foreach didn't loop over all children correctly.", index, 2);
}
[Test]
public void MultipleChildren ()
{
document.LoadXml ("<foo><child1/><child2/><child3/></foo>");
element = document.DocumentElement;
AssertEquals ("Incorrect number of children returned from Count property.", element.ChildNodes.Count, 3);
AssertNull ("Index less than zero should have returned null.", element.ChildNodes [-1]);
AssertNull ("Index greater than or equal to Count should have returned null.", element.ChildNodes [3]);
AssertEquals ("Didn't return the correct child.", element.FirstChild, element.ChildNodes[0]);
AssertEquals ("Didn't return the correct child.", "child1", element.ChildNodes[0].LocalName);
AssertEquals ("Didn't return the correct child.", "child2", element.ChildNodes[1].LocalName);
AssertEquals ("Didn't return the correct child.", "child3", element.ChildNodes[2].LocalName);
index = 1;
foreach (XmlNode childNode in element.ChildNodes)
{
AssertEquals ("Enumerator didn't return correct node.", "child" + index.ToString(), childNode.LocalName);
index++;
}
AssertEquals ("foreach didn't loop over all children correctly.", index, 4);
}
[Test]
public void AppendChildAffectOnEnumeration ()
{
document.LoadXml ("<foo><child1/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
AssertEquals ("MoveNext should have succeeded.", enumerator.MoveNext(), true);
AssertEquals ("MoveNext should have failed.", enumerator.MoveNext(), false);
enumerator.Reset();
AssertEquals ("MoveNext should have succeeded.", enumerator.MoveNext(), true);
element.AppendChild(document.CreateElement("child2"));
AssertEquals ("MoveNext should have succeeded.", enumerator.MoveNext(), true);
AssertEquals ("MoveNext should have failed.", enumerator.MoveNext(), false);
}
[Test]
public void RemoveChildAffectOnEnumeration ()
{
document.LoadXml ("<foo><child1/><child2/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
element.RemoveChild(element.FirstChild);
enumerator.MoveNext();
AssertEquals ("Expected child2 element.", ((XmlElement)enumerator.Current).LocalName, "child2");
}
[Test]
public void RemoveChildAffectOnEnumerationWhenEnumeratorIsOnRemovedChild ()
{
document.LoadXml ("<foo><child1/><child2/><child3/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator ();
enumerator.MoveNext ();
enumerator.MoveNext ();
AssertEquals ("Expected child2 element.", "child2", ((XmlElement)enumerator.Current).LocalName);
AssertEquals ("Expected child2 element.", "child2", element.FirstChild.NextSibling.LocalName);
element.RemoveChild (element.FirstChild.NextSibling);
enumerator.MoveNext ();
try {
element = (XmlElement) enumerator.Current;
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();
AssertEquals ("MoveNext should have succeeded.", enumerator.MoveNext(), true);
element.ReplaceChild(node, element.LastChild);
enumerator.MoveNext();
AssertEquals ("Expected child3 element.", ((XmlElement)enumerator.Current).LocalName, "child3");
AssertEquals ("MoveNext should have failed.", enumerator.MoveNext(), false);
}
[Test]
public void RemoveOnlyChildAffectOnEnumeration ()
{
document.LoadXml ("<foo><child1/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
element.RemoveChild(element.FirstChild);
AssertEquals ("MoveNext should have failed.", enumerator.MoveNext(), false);
}
// 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();
AssertEquals ("Expected 3 children.", element.ChildNodes.Count, 3);
AssertEquals ("MoveNext should have succeeded.", enumerator.MoveNext(), true);
element.RemoveAll();
AssertEquals ("MoveNext should have failed.", enumerator.MoveNext(), false);
}
[Test]
public void CurrentBeforeFirstNode ()
{
document.LoadXml ("<foo><child1/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
try
{
obj = enumerator.Current;
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;
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();
AssertEquals("Consecutive calls to Current property should yield same reference.", Object.ReferenceEquals(enumerator.Current, enumerator.Current), true);
}
[Test]
public void Reset ()
{
document.LoadXml ("<foo><child1/><child2/></foo>");
element = document.DocumentElement;
enumerator = element.GetEnumerator();
enumerator.MoveNext();
enumerator.MoveNext();
AssertEquals("Expected child2.", ((XmlElement)enumerator.Current).LocalName, "child2");
enumerator.Reset();
enumerator.MoveNext();
AssertEquals("Expected child1.", ((XmlElement)enumerator.Current).LocalName, "child1");
}
[Test]
public void ReturnNullWhenIndexIsOutOfRange ()
{
document.LoadXml ("<root><foo/></root>");
XmlNodeList nl = document.DocumentElement.GetElementsByTagName ("bar");
AssertEquals ("empty list. count", 0, nl.Count);
try {
AssertNull ("index 0", nl [0]);
AssertNull ("index 1", nl [1]);
AssertNull ("index -1", nl [-1]);
} catch (ArgumentOutOfRangeException) {
Fail ("don't throw index out of range.");
}
}
}
}
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