public void Login_iscalled_returnchatClients()
{
//Arrange
var chatHub = new ChatHub();
string firstName = "a";
Mock <HubCallerContext> mockClientContext = new Mock <HubCallerContext>();
mockClientContext.Setup(c => c.ConnectionId).Returns(Guid.NewGuid().ToString);
//Act
var chatClients = chatHub.Login(firstName);
//Assert
Assert.Equal(firstName, chatClients.Select(x => x.Value.FirstName).First());
Assert.Equal(firstName, chatClients.Select(x => x.Key).First());
Assert.IsType <ConcurrentDictionary <string, User> >(chatClients);
}
