public async Task LogMessage_ShouldNotCallWriterMessage_WhenMessageIsEmpty()
{
//arrange
_loggerSettings.LogLevel.Returns(LogLevel.Error);
DateTime now = DateTime.UtcNow;
//act
await _logger.LogMessageAsync("", LogLevel.Error);
//arrange
await _logWriter.DidNotReceiveWithAnyArgs().WriteMessageAsync(Arg.Any <string>(), Arg.Any <LogLevel>());
}