public void AddData_EmptyValues()
{
lookup.Columns.Clear();
lookup.Columns.Add(new LookupColumn("Test", null));
lookup.AddData(row, new TestModel {
Value = "Test", Date = DateTime.Now.Date, Count = 4
});
Assert.Equal(new String[] { null }, row.Values);
Assert.Equal(new[] { "Test" }, row.Keys);
}