BloomTests.Book.PageMigrationTests.BringPageUpToDateWithMigration_SourceHasEmptyDataPage_DoesNotAcquireDataPageFromTemplate C# (CSharp) Method

        public void BringPageUpToDateWithMigration_SourceHasEmptyDataPage_DoesNotAcquireDataPageFromTemplate()
        {
            //the  data-pagelineage='FD115DFF-0415-4444-8E76-3D2A18DBBD27' here tells us we came from
            //an old template page and triggers migration to its current equivalent
            SetDom(@"<div class='imageOnTop'  data-page='' data-pagelineage='FD115DFF-0415-4444-8E76-3D2A18DBBD27' id='thePage'>
               <div class='marginBox'>
                    <div class='bloom-imageContainer bloom-leadingElement'><img src='erjwx3bl.q3c.png'></img></div>
                </div>
            </div>
            ");
            var book = CreateBook();
            var dom = book.RawDom;
            var page = (XmlElement)dom.SafeSelectNodes("//div[@id='thePage']")[0];
            book.BringPageUpToDate(page);
            //The source template page has data-page='extra', but the migrated page *must not* have this.
            AssertThatXmlIn.Dom(dom).HasNoMatchForXpath("//div[@id='thePage' and @data-page='extra']");
            AssertThatXmlIn.Dom(dom).HasNoMatchForXpath("//div[@id='thePage' and @data-page]");
        }