public void PageMarginsException()
{
Document doc = new Document(MyDir + "Bookmark.doc");
HtmlFixedSaveOptions saveOptions = new HtmlFixedSaveOptions();
Assert.That(() => saveOptions.PageMargins = -1, Throws.TypeOf<ArgumentException>());
doc.Save(MyDir + @"\Artifacts\HtmlFixedPageMargins.html", saveOptions);
}