public void PingPong_NumberDivisibleByFive_ping()
{
PingPongClass testPingPong = new PingPongClass();
Assert.AreEqual("pong", testPingPong.CheckNumber(10));
}
public void PingPong_NumberDivisibleByThree_ping()
{
// PingPongClass testPingPong = new PingPongClass();
Assert.AreEqual("ping", PingPongClass.CheckNumber(6));
}