public void TestAdd()
{
column.Add("Itxaso");
DataList = column.GetList();
Assert.IsTrue(DataList.Count == 1);
Assert.IsNotNull(DataList);
Assert.AreEqual(DataList[0], "Itxaso");
column.Add("Ana");
DataList = column.GetList();
Assert.IsTrue(DataList.Count == 2);
Assert.AreEqual(DataList[1], "Ana");
column.Add(null);
DataList = column.GetList();
Assert.IsTrue(DataList.Count == 3);
Assert.AreEqual(DataList[2], null);
column.Add("Gaizka");
DataList = column.GetList();
Assert.IsTrue(DataList.Count == 4);
Assert.AreEqual(DataList[3], "Gaizka");
}