public void DeleteFirstOneElemADTListHeadTailCountTest()
{
// Arrange
var emptyList = new ADTList <int>().AddLast(1);
// Act
emptyList.DeleteFirst();
// Assert
Assert.AreEqual(null, emptyList.Head);
Assert.AreEqual(null, emptyList.Tail);
Assert.AreEqual(0, emptyList.Count);
}
public void DeleteFirstTwoElemADTListHeadTailCountTest()
{
// Arrange
var emptyList = new ADTList <int>().AddLast(1).AddLast(2);
// Act
emptyList.DeleteFirst();
// Assert
Assert.AreSame(emptyList.Head, emptyList.Tail);
Assert.AreEqual(2, emptyList.Head.Data);
Assert.AreEqual(2, emptyList.Tail.Data);
Assert.AreEqual(1, emptyList.Count);
}