public void ReceiveDamageTest()
{
Character c1Clone = c1.Copy();
Destructible d1Clone = d1.Copy();
Destructible d2Clone = d2.Copy();
c1Clone.ApplyDamage(d1Clone);
// Character destroyed D1.
Assert.IsTrue(d1Clone.HP <= 0);
c1Clone.ApplyDamage(d2Clone);
// D2 receives full damage of C1's strength of 1 point
Assert.AreEqual(d2Clone.HP, 4);
}