public void ConvertToAnotherNumeralSystem_ArgumentIsMoreMaxValidValue_ExpectedException()
        {
            BigInteger number = 19;
            int        radix  = 21;
            ConverterToAnotherNumeralSystem numb = new ConverterToAnotherNumeralSystem(number, radix);

            Assert.Throws <FormatException>(() => numb.ConvertToAnotherNumeralSystem());
        }
        public void ConvertToAnotherNumeralSystem_ArgumentIsNegative_ExpectedException()
        {
            int number = -31;
            int radix  = 16;
            ConverterToAnotherNumeralSystem numb = new ConverterToAnotherNumeralSystem(number, radix);

            Assert.Throws <ArgumentException>(() => numb.ConvertToAnotherNumeralSystem());
        }
        public void ConvertToAnotherNumeralSystem_ArgumentIsMaxValidValue()
        {
            BigInteger number   = 19;
            int        radix    = 20;
            string     expected = "J";
            ConverterToAnotherNumeralSystem numb = new ConverterToAnotherNumeralSystem(number, radix);

            Assert.AreEqual(expected, numb.ConvertToAnotherNumeralSystem());
        }