public void CorrectDisivion()
        {
            var operation = new DivOperation();
            var result = operation.Execute(9, 3);

            Assert.Equal(3, result);
        }
        public void DivisionByZeroExceptionThrow()
        {
            var operation = new DivOperation();

            Assert.Throws(typeof(DivideByZeroException), () =>
                {
                    operation.Execute(13, 0);
                });
        }