public void AddMultipleObjects()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.Add("item2");
ll.Add("item3");
Assert.IsTrue(ll.Count == 3, "Expected 3 items not " + ll.Count);
Assert.IsTrue(ll[0].Equals("item1"), "Expected first element to be \"item1\" not " + ll[0]);
Assert.IsTrue(ll[1].Equals("item2"), "Expected second element to be \"item2\" not " + ll[1]);
}
public void Contains()
{
LinkedList ll = new LinkedList();
Assert.IsFalse(ll.Contains("Foo"));
ll = new LinkedList();
Assert.IsFalse(ll.Contains(null));
ll.Add("Foo");
ll.Add(null);
ll.Add("Bar");
Assert.IsTrue(ll.Contains(null));
Assert.IsTrue(ll.Contains("Bar"));
Assert.IsTrue(ll.Contains("Foo"));
ll = new LinkedList();
ll.Add("Foo");
ll.Add("Bar");
Assert.IsFalse(ll.Contains(null));
}
public void CopyToWithInsufficientSizeArray()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.Add("item2");
string[] strings = new string[2];
ll.CopyTo(strings, 1);
}
public void CopyToWithIndexGreaterThanArrayLength()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
string[] strings = new string[1];
ll.CopyTo(strings, 2);
}
public void RemoveObject()
{
string item1 = "item1";
string item2 = "item2";
string item3 = "item3";
LinkedList ll = new LinkedList();
ll.Add(item1);
ll.Add(item2);
ll.Add(item3);
ll.Remove(item2);
Assert.IsTrue(ll.Count == 2, "Expected 2 items not " + ll.Count);
Assert.IsTrue(ll[0].Equals("item1"), "Expected first element to be \"item1\" not " + ll[0]);
Assert.IsTrue(ll[1].Equals("item3"), "Expected second element to be \"item3\" not " + ll[1]);
}
public void Insert()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.Add("item2");
ll.Insert(1, "item1andahalf");
Assert.IsTrue(ll.Count == 3, "Expected 3 items not " + ll.Count);
Assert.IsTrue(ll[0].Equals("item1"), "Expected first element to be \"item1\" not " + ll[0]);
Assert.IsTrue(ll[1].Equals("item1andahalf"), "Expected second element to be \"item1andahalf\" not " + ll[1]);
Assert.IsTrue(ll[2].Equals("item2"), "Expected third element to be \"item2\" not " + ll[0]);
}
public void RemoveAt()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.Add("item2");
ll.Add("item3");
ll.RemoveAt(1);
Assert.IsTrue(ll.Count == 2, "Expected 2 items not " + ll.Count);
Assert.IsTrue(ll[0].Equals("item1"), "Expected first element to be \"item1\" not " + ll[0]);
Assert.IsTrue(ll[1].Equals("item3"), "Expected second element to be \"item3\" not " + ll[1]);
}
public void EnumeratorModification()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.Add("item2");
ll.Add("item3");
IEnumerator ienum = ll.GetEnumerator();
Assert.IsTrue(ienum.MoveNext());
ll.RemoveAt(0);
ienum.MoveNext();
Assert.Fail("Expected enumerator to fail with InvalidOperationException");
}
public void IndexOfObject()
{
string item1 = "item1";
string item2 = "item2";
string item3 = "item3";
LinkedList ll = new LinkedList();
ll.Add(item1);
ll.Add(item2);
ll.Add(item3);
int index = ll.IndexOf(item2);
Assert.IsTrue(index == 1, "Expected index of 1 not " + index);
}
public void Enumerator()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.Add("item2");
ll.Add("item3");
IEnumerator ienum = ll.GetEnumerator();
Assert.IsTrue(ienum.MoveNext());
Assert.IsTrue(ienum.Current.Equals("item1"), "Expected first element to be \"item1\" not " + ienum.Current);
Assert.IsTrue(ienum.MoveNext());
Assert.IsTrue(ienum.Current.Equals("item2"), "Expected second element to be \"item2\" not " + ienum.Current);
}
public void CopyToWithZeroIndex()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.Add("item2");
ll.Add("item3");
string[] strings = new string[3];
ll.CopyTo(strings, 0);
Assert.IsTrue(strings[0].Equals("item1"), "Expected first element to be \"item1\" not " + strings[0]);
Assert.IsTrue(strings[1].Equals("item2"), "Expected second element to be \"item2\" not " + strings[1]);
Assert.IsTrue(strings[2].Equals("item3"), "Expected third element to be \"item3\" not " + strings[2]);
}
public void CopyToWithNullArray()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.CopyTo(null, 0);
}
public void CopyToWithNonZeroIndex()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
ll.Add("item2");
ll.Add("item3");
string[] strings = new string[5];
strings[0] = "string1";
strings[1] = "string2";
ll.CopyTo(strings, 2);
Assert.IsTrue(strings[0].Equals("string1"), "Expected first element to be \"string1\" not " + strings[0]);
Assert.IsTrue(strings[1].Equals("string2"), "Expected second element to be \"string2\" not " + strings[1]);
Assert.IsTrue(strings[2].Equals("item1"), "Expected third element to be \"item1\" not " + strings[2]);
Assert.IsTrue(strings[3].Equals("item2"), "Expected fourth element to be \"item2\" not " + strings[3]);
Assert.IsTrue(strings[4].Equals("item3"), "Expected fifth element to be \"item3\" not " + strings[4]);
}
public void CopyToWithNegativeIndex()
{
LinkedList ll = new LinkedList();
ll.Add("item1");
string[] strings = new string[1];
ll.CopyTo(strings, -1);
}