public void Send_Message_With_Attachment(string fileFormat)
{
var message = GetTestMessage(fileFormat);
_client.Send(message);
Thread.Sleep(WaitForMessageSentTimeout);
var messagesSent = _client.GetMessages(new SubjectFilter(message.Subject));
messagesSent.Should().HaveCount(1);
messagesSent.Select(msg => msg.Attachments.First().Data).Should()
.AllBeEquivalentTo(message.Attachments.First().Data, "Attachment data did not match");
}
