public void MultiElementsTest() { Body body = new Body(); string headerId = "id1"; string headerName = "name1"; string headerText = "text"; string headerStyle = "color:red"; Header2 h2 = new Header2(headerText, headerId, headerName, headerStyle); body.AddElement(h2); Assert.Equal($"<body><h2 id=\"{headerId}\" name=\"{headerName}\" style=\"{headerStyle}\">{headerText}</h2></body>", body.ToHtml()); }