public void OnHttpServerUpgradeWithoutHandlerAdded() { var b = new Http2ConnectionHandlerBuilder(); b.FrameListener = new Http2FrameAdapter(); b.IsServer = true; _handler = b.Build(); var e = Assert.Throws <Http2Exception>(() => _handler.OnHttpServerUpgrade(new Http2Settings())); Assert.Equal(Http2Error.InternalError, e.Error); }