public void LevelUpTest()
        {
            // Character with initial resistance of 0
            Character c4Clone = c4.Copy();

            // Hazard that deals 4 HP
            Hazard h3Clone = h3.Copy();

            // Destructible with 5 HP
            Destructible d2Clone = d2.Copy();

            h3Clone.ApplyDamage(c4Clone);

            // Since C4 has no resistance, hazard deals full damage
            Assert.AreEqual(c4Clone.HP, 7);

            for (int i = 0; i < 5; i++)
            {
                c4Clone.LevelUp();
            }

            // Character 1 grew up 5 levels
            Assert.AreEqual(c4Clone.Level, 6);

            //(int)System.Math.Ceiling(0 + (1 * (6 - 1) * 0.25)); = 2
            Assert.AreEqual(c4Clone.Resistance, 2);

            h3Clone.ApplyDamage(c4Clone);

            // After leveling up, hazard deals 1HP
            Assert.AreEqual(c4Clone.HP, 6);

            c4Clone.ApplyDamage(d2Clone);

            // After leveling up, C4 has 3 strength
            Assert.AreEqual(d2Clone.HP, 2);
        }