private static (AspNetSessionValueLayoutRenderer, HttpContext) CreateRenderer(bool throwsError = false)
{
var(renderer, httpContext) = CreateWithHttpContext();
var mockSession = new SessionMock(throwsError);
mockSession.SetString("a", "https://duckduckgo.com");
httpContext.Session = mockSession;
httpContext.Items = new Dictionary <object, object>();
var sessionFeature = new SessionFeatureMock(mockSession);
httpContext.Features.Get <ISessionFeature>().Returns(sessionFeature);
return(renderer, httpContext);
}