public void ItShouldReturn83GivenIPassIn89()
        {
            var primeCalculator = new PrimeNumberCalculator();

            Assert.AreEqual(89, primeCalculator.GetNextPrime(83));
        }
        public void ItShouldReturn7GivenIPassIn5()
        {
            var primeCalculator = new PrimeNumberCalculator();

            Assert.AreEqual(7, primeCalculator.GetNextPrime(5));
        }
        public void ItShouldReturn13GivenIPassIn17()
        {
            var primeCalculator = new PrimeNumberCalculator();

            Assert.AreEqual(17, primeCalculator.GetNextPrime(13));
        }