public void Test_Revive()
        {
            //arrange
            int[]     PRIME_ARRAY = { 11, 13, 17, 19, 23, 29, 31,
                                      37,     41, 43, 47, 53, 59, 61,67, 71, 73, 79, 83, 89, 97 };
            Random    random        = new Random();
            int       index         = random.Next(1, PRIME_ARRAY.Length);
            int       prime         = PRIME_ARRAY[index];
            NearPrime obj           = new NearPrime(prime);
            int       validNumber   = random.Next(2, prime);
            int       invalidNumber = random.Next(-10, 2);

            //act
            obj.Mod(invalidNumber);
            if (!obj.getActive())
            {
                obj.Revive();
            }
            bool expectedState = true;
            int  expectedValue = 0;
            int  upperNumber   = prime;
            int  lowerNumber   = prime;
            bool found         = false;

            while (!found)
            {
                if (++upperNumber % validNumber == 0)
                {
                    found         = true;
                    expectedValue = upperNumber;
                }
                else if (--lowerNumber >= validNumber &&
                         lowerNumber % validNumber == 0)
                {
                    found         = true;
                    expectedValue = lowerNumber;
                }
            }
            //assert
            Assert.AreEqual(expectedValue, obj.Mod(validNumber));
            Assert.AreEqual(expectedState, obj.getActive());
        }
        public void Test_Revive_When_Active()
        {
            //arrange
            int[]     PRIME_ARRAY = { 11, 13, 17, 19, 23, 29, 31,
                                      37,     41, 43, 47, 53, 59, 61,67, 71, 73, 79, 83, 89, 97 };
            Random    random = new Random();
            int       index  = random.Next(1, PRIME_ARRAY.Length);
            int       prime  = PRIME_ARRAY[index];
            NearPrime obj    = new NearPrime(prime);

            //act
            if (obj.getActive())
            {
                obj.Revive();
            }
            bool expectedState = false;

            //assert
            Assert.AreEqual(expectedState, obj.getActive());
        }