public async Task CreateTest()
    {
        var fakeBus   = new FakeBus();
        var dataStore = fakeBus.GetDataBusDataStore();
        var handler   = new DataBusAttachmentCreatingHandler(fakeBus);

        await handler.Handle("hej med dig min ven!");

        var sentDataBusAttachments = fakeBus.Events
                                     .OfType <MessageSent <DataBusAttachment> >()
                                     .ToList();

        Assert.That(sentDataBusAttachments.Count, Is.EqualTo(1));

        var attachmentId = sentDataBusAttachments.First().CommandMessage.Id;

        var data     = dataStore.Load(attachmentId);
        var textData = Encoding.UTF8.GetString(data);

        Assert.That(textData, Is.EqualTo("hej med dig min ven!"));
    }