public void RemoveDataDivVariableForOneLanguage_WasLastForm_WholeElementRemoved()
{
var htmlDom = new HtmlDom();
var data = new BookData(htmlDom, new CollectionSettings(), null);
data.Set("1","one","en");
var roundTripData = new BookData(htmlDom, new CollectionSettings(), null);
roundTripData.RemoveSingleForm("1", "en");
Assert.IsNull(roundTripData.GetVariableOrNull("1", "en"));
}