public void ChargeShouldNotGoBelowZero()
        {
            var battery = new LaptopBattery();
            battery.Charge(-51);

            Assert.AreEqual(0, battery.Percentage);
        }
        public void ChargeShouldNotGoAbove100()
        {
            var battery = new LaptopBattery();
            battery.Charge(51);

            Assert.AreEqual(100, battery.Percentage);
        }
        public void ChargeWorksCorrectWithNegativeValues()
        {
            var battery = new LaptopBattery();
            battery.Charge(-1);

            Assert.AreEqual(49, battery.Percentage);
        }