public void FormData_EmptyValues()
{
lookup.Columns.Clear();
lookup.Columns.Add(new LookupColumn("Test", ""));
Dictionary <String, String?> row = lookup.FormData(new TestModel {
Id = "1", Value = "Test", Date = DateTime.Now.Date, Count = 4
});
Assert.Equal(new[] { "Test", "Label", nameof(TestModel.Id) }, row.Keys);
Assert.Equal(new[] { null, "", "1" }, row.Values);
}