public void Not_Warn_If_No_Intrusion()
{
var logger = new Mock <ILogger>();
var atc = new YvrCenter(); // mediator
var flight1 = new Airbus321("AC159", atc, logger.Object);
var flight2 = new Boeing737("WS203", atc, logger.Object);
var flight3 = new Embraer190("AC602", atc, logger.Object);
flight1.Altitude = 30000;
flight2.Altitude = 35000;
flight3.Altitude = 32000;
logger.Verify(l => l.Log(It.IsAny <string>()), Times.Never());
}
public void Warn_Of_Intrusion()
{
var logger = new Mock <ILogger>();
var atc = new YvrCenter(); // mediator
var flight1 = new Airbus321("AC159", atc, logger.Object);
var flight2 = new Boeing737("WS203", atc, logger.Object);
var flight3 = new Embraer190("AC602", atc, logger.Object);
flight1.Altitude = 30000;
flight2.Altitude = 35000;
flight3.Altitude = 34000;
logger.Verify(l => l.Log(It.IsAny <string>()), Times.Once());
logger.Verify(l => l.Log($"{flight3.CallSign} intruding into {flight2.CallSign}'s airspace"), Times.Once());
}
