public void CommaFormat() { string num1 = "1"; string num1result = Formatting.CommaInteger(num1); Assert.AreEqual("1", num1result); string num2 = "12"; string num2result = Formatting.CommaInteger(num2); Assert.AreEqual("12", num2result); string num3 = "123"; string num3result = Formatting.CommaInteger(num3); Assert.AreEqual("123", num3result); string num4 = "1234"; string num4result = Formatting.CommaInteger(num4); Assert.AreEqual("1,234", num4result); string num5 = "12345"; string num5result = Formatting.CommaInteger(num5); Assert.AreEqual("12,345", num5result); string num6 = "123456"; string num6result = Formatting.CommaInteger(num6); Assert.AreEqual("123,456", num6result); string num7 = "1234567"; string num7result = Formatting.CommaInteger(num7); Assert.AreEqual("1,234,567", num7result); string num8 = "123456789123456"; string num8result = Formatting.CommaInteger(num8); Assert.AreEqual("123,456,789,123,456", num8result); }