public void UpdateVariablesAndDataDivThroughDOM_VariableIsNull_DataDivForItRemoved()
{
var htmlDom = new HtmlDom();
var data = new BookData(htmlDom, new CollectionSettings(), null);
data.Set("1","one","en");
data.Set("1", null, "es");
data.UpdateVariablesAndDataDivThroughDOM();
AssertThatXmlIn.Dom(htmlDom.RawDom).HasSpecifiedNumberOfMatchesForXpath("html/body/div/div[@lang='en']",1);
AssertThatXmlIn.Dom(htmlDom.RawDom).HasSpecifiedNumberOfMatchesForXpath("html/body/div/div[@lang='es']", 0);
}