public void DivisionMustReturhCorrectValue()
        {
            Calculator calc = new Calculator();

            Assert.That(calc.Division(10, 10) == 1);
            Assert.That(calc.Division(100, 10) == 10);
            Assert.That(calc.Division(0, 10) == 0);
        }
        public void DivisionMustThrowException()
        {
            var calculator = new Calculator();

            Assert.Throws <DivideByZeroException>(() => calculator.Division(30, 0));
        }