public static void TestAdapter()
{
// Round fits round, no surprise.
RoundHole hole = new RoundHole(5);
RoundPeg rpeg = new RoundPeg(5);
if (hole.Fits(rpeg))
{
Console.WriteLine("Round peg r5 fits round hole r5.");
}
SquarePeg smallSqPeg = new SquarePeg(2);
SquarePeg largeSqPeg = new SquarePeg(20);
// hole.fits(smallSqPeg); // Won't compile.
// Adapter solves the problem.
SquarePegAdapter smallSqPegAdapter = new SquarePegAdapter(smallSqPeg);
SquarePegAdapter largeSqPegAdapter = new SquarePegAdapter(largeSqPeg);
if (hole.Fits(smallSqPegAdapter))
{
Console.WriteLine("Square peg w2 fits round hole r5.");
}
if (!hole.Fits(largeSqPegAdapter))
{
Console.WriteLine("Square peg w20 does not fit into round hole r5.");
}
}
public SquarePegAdapter(SquarePeg peg)
{
Peg = peg;
}