public void ReturnFalseIfReducebySmallerThanEraserDurability(int reduceBy)
        {
            var sut    = new Pencil();
            var result = sut.ReduceEraserDurability(reduceBy);

            Assert.False(result);
        }
        public void ReduceEraserDurabilityByWeightOfCharacter(int reduceBy)
        {
            var sut = new Pencil();

            sut.ReduceEraserDurability(reduceBy);

            Assert.Equal(20000 - reduceBy, sut.EraserDurability);
        }