public void SubscriptionCollection_CreateReport_Test()
{
var target = new SubscriptionCollection(new MessageBus());
target.Subscribe <int>(b => b
.WithTopic("test1")
.Invoke(x => { }));
target.Listen <int, string>(b => b
.WithTopic("test2")
.Invoke(x => "ok"));
target.Participate <long, DateTime>(b => b
.WithTopic("test3")
.Invoke(x => DateTime.UtcNow));
var report = target.ReportContents();
report.Length.Should().Be(3);
}