public void ExpressionBasedHubProxy_Throws_If_Not_Given_Proxy_Call()
{
var client = new ExpressionBasedHubProxy <IBar>(null);
Assert.Throws <ArgumentException>(() =>
client.Execute(r => Console.Write("")));
}
_ExpressionBasedHubProxy_Can_Communicate_Client_Server()
{
var hc = new HubConnectionBuilder()
.WithUrl(ProxyTestHostHolder._expressionHubString).Build();
await hc.StartAsync();
var client = new ExpressionBasedHubProxy <IBar>(hc);
await client.Execute(r => r.StringType("hello2"));
SpinWait.SpinUntil(() => false, TimeSpan.FromSeconds(2));
Assert.True(GroupHub.callCounter["hello2"] > 0);
}