public void Enumerable()
{
LinkedList list = new LinkedList();
list.AddFirst( "third" );
list.AddFirst( "second" );
list.AddFirst( "first" );
int index = 0;
foreach(String value in list)
{
switch(index++)
{
case 0:
Assert.AreEqual( "first", value );
break;
case 1:
Assert.AreEqual( "second", value );
break;
case 2:
Assert.AreEqual( "third", value );
break;
}
}
}
public void AddFirst()
{
LinkedList list = new LinkedList();
list.AddFirst( "third" );
Assert.AreEqual( "third", list.Head );
Assert.AreEqual( 1, list.Count );
list.AddFirst( "second" );
Assert.AreEqual( "second", list.Head );
Assert.AreEqual( 2, list.Count );
list.AddFirst( "first" );
Assert.AreEqual( "first", list.Head );
Assert.AreEqual( 3, list.Count );
}
private static void Visit(IVertex node, ColorsSet colors,
TimestampSet discovery, TimestampSet finish, LinkedList<IVertex> list, ref int time)
{
colors.Set(node, VertexColor.Gray);
discovery.Register(node, time++);
foreach(IVertex child in node.Adjacencies)
{
if (colors.ColorOf(child) == VertexColor.White)
{
Visit(child, colors, discovery, finish, list, ref time);
}
}
finish.Register(node, time++);
#if DEBUG
Debug.Assert(discovery.TimeOf(node) < finish.TimeOf(node));
#endif
list.AddFirst(node);
colors.Set(node, VertexColor.Black);
}
public void ToArray()
{
LinkedList list = new LinkedList();
list.AddFirst( "third" );
list.AddFirst( "second" );
list.AddFirst( "first" );
String[] values = (String[]) list.ToArray( typeof(String) );
Assert.AreEqual( "first", values[0] );
Assert.AreEqual( "second", values[1] );
Assert.AreEqual( "third", values[2] );
}
public void Insert1_AfterReplacingHeadWithAddFirst()
{
LinkedList list = new LinkedList();
list.Add("2");
list.AddFirst("1");
list.Insert(1, "x");
Assert.AreEqual(3, list.Count);
String[] array = (String[])list.ToArray(typeof(String));
Assert.AreEqual("1,x,2", String.Join(",", array));
}
