Sample test from coming Entile drop.

gistfile1.cs

    public class When_Updating_Registration_On_Registered_Client : With<Client>
    {
        protected override IEnumerable<IEvent> Given()
        {
            yield return new ClientRegisteredEvent("1234", "http://my.channel.com");
        }

        protected override void When(Client client)
        {
            client.UpdateRegistration("http://new.channel.com");
        }

        [Fact]
        public void Then_ClientRegistrationUpdatedEvent_Is_Sent()
        {
            AssertEvent.IsType<ClientRegistrationUpdatedEvent>(0);
        }

        [Fact]
        public void Then_The_UniqueId_On_The_Event_Is_Correct()
        {
            AssertEvent.Contents<ClientRegistrationUpdatedEvent>(0,
               ev => Assert.Equal("1234", ev.UniqueId));
        }

        [Fact]
        public void Then_The_NotificationChannel_On_The_Event_Is_Correct()
        {
            AssertEvent.Contents<ClientRegistrationUpdatedEvent>(0,
               ev => Assert.Equal("http://new.channel.com", ev.NotificationChannel));
        }
    }