public void WorldRecordRegister_Instantiation_OnlyCreatesSingleInstance()
{
// Arrange
BikeWorldRecordRegister registerOne = BikeWorldRecordRegister.Instance;
BikeWorldRecordRegister registerTwo = BikeWorldRecordRegister.Instance;
// Act
registerOne.FastestTopSpeed = 100;
// Assert
// Assert.AreSame makes sure the two objects are pointing to the same memory
// Assert.Equals simply does a value compare
Assert.AreSame(registerOne, registerTwo);
Assert.AreEqual(registerOne.FastestTopSpeed, registerTwo.FastestTopSpeed);
}
public static void Run()
{
Console.WriteLine($"{Environment.NewLine}*** SINGLETON PATTERN ***{Environment.NewLine}");
// Get the world records register instance
BikeWorldRecordRegister register = BikeWorldRecordRegister.Instance;
// Set the world record
register.FastestAverageSpeedOver100Km = 43;
register.FastestTopSpeed = 201;
register.PrinRecords();
register.FastestTopSpeed += 10;
// Get another reference to the register
BikeWorldRecordRegister registerTwo = BikeWorldRecordRegister.Instance;
// See that this register is the same instance the previous one
// as the record value has changed.
registerTwo.PrinRecords();
}
