public void Renders_custom_header()
{
ColumnFor(x => x.Name).Header(x => "TEST");
ColumnFor(p => p.Id);
string expected = "<table class=\"grid\"><thead><tr><th>TEST</th><th>Id</th></tr></thead><tbody><tr class=\"gridrow\"><td>Jeremy</td><td>1</td></tr></tbody></table>";
RenderGrid().ShouldEqual(expected);
}