public void RenderedHtmlViewMatchesExpectedCount()
{
var es = MakeNewEventStore();
var html = cr.RenderHtml(es, EventStoreTest.test_category, 0, from: DateTime.MinValue, to: DateTime.MinValue, source:null, args:null);
var html_count = GenUtils.RegexCountSubstrings(html, event_html_header);
Assert.AreEqual(1, html_count);
}