public void Test_SumHandlingDelimiters()
        {
            // Arrange
            int expected = 20;

            // Act
            int actual_result = WordCalc.SumHandlingDelimiters("3\n5\n3, 9", 0);

            // Assert
            Assert.Equal(expected, actual_result);
        }
        public void Test_SumHandlingDelimiters_Step6()
        {
            // Arrange
            int expected = 3;

            // Act
            int actual_result = WordCalc.SumHandlingDelimiters("//;\n1;2", 0);

            // Assert
            Assert.Equal(expected, actual_result);
        }