public static void Main(string[] args)
{
Logger logger = new Logger(msg => Console.WriteLine(msg));
logger.Log("hello");
FilterLogger filterLogger = new ConcreteFilterLogger(logger);
filterLogger.Log("hello");
filterLogger.Log("ok");
}
public void Test_Logger2()
{
string logOutput;
Logger2.Logger logger = new Logger2.Logger(msg => logOutput = msg);
logOutput = null;
logger.Log("hello");
Assert.Equal("hello", logOutput);
FilterLogger filterLogger = new ConcreteFilterLogger(logger);
logOutput = null;
filterLogger.Log("hello");
Assert.Equal("hello", logOutput);
logOutput = null;
filterLogger.Log("ok");
Assert.Null(logOutput);
}
