public void TestAllNumbers()
        {
            var    calc      = new NumericSequenceCalc();
            string strOutput = calc.AllNumbers(16);

            Assert.AreEqual("12345678910111213141516", strOutput);
        }
 public void TestAllNumbers()
 {
     var calc = new NumericSequenceCalc();
     string strOutput = calc.AllNumbers(16);
     Assert.AreEqual("12345678910111213141516", strOutput);
 }