public void Should_Render_Hidden_Submit_Button()
{
IHtmlString button = new HtmlHelper(new ViewContext(), new ViewPage()).HiddenSubmit();
string html = button.ToHtmlString().Trim();
Assert.IsTrue(html.StartsWith("<input "));
Assert.IsTrue(html.EndsWith("/>", System.StringComparison.Ordinal));
Assert.IsTrue(html.Contains("position:absolute; left:-999em; top:-999em;") || html.Contains("position: absolute; left: -999em; top: -999em;"));
}
}