public void OperationSuccess_CorrectEventContent()
{
var source = new DiagnosticListener("Autofac");
var subscriber = new MockSubscriber();
subscriber.Enable(DiagnosticEventKeys.OperationSuccess);
source.Subscribe(subscriber, subscriber.IsEnabled);
var operation = MockResolveOperation();
source.OperationSuccess(operation, "instance");
var e = Assert.Single(subscriber.Events);
Assert.Equal(DiagnosticEventKeys.OperationSuccess, e.Key);
Assert.IsType <OperationSuccessDiagnosticData>(e.Value);
}