public async Task NotifyAsync_ReturnSuccess()
        {
            // Arrange
            var to = _faker.Internet.Email();

            _emailMessage.To.Add(to);
            // Act
            var result = await _notificator.NotifyAsync(_emailMessage);

            // Assert
            _output.WriteLine(result.ToString());
            Assert.True(result.Success);
        }
        public async Task NotifyAsync_ConfigHas3SmtpServersAndFirstOfThemDoesNotWork_SmtpClient1WasReceived()
        {
            // Arrange
            _smtpClient1.SendAsync(Arg.Any <MailMessage>()).Throws(new Exception());
            // Act
            await _notificator.NotifyAsync(_emailMessage);

            // Assert
            await _smtpClient1.Received(1).SendAsync(Arg.Any <MailMessage>());
        }