static void Main(string[] args)
{
var input = "";
var calculator = new BasicStringCalculator();
Console.WriteLine("------------------------------------------------------");
Console.WriteLine("Basic String Calculator. Type 'Exit' to quit.");
Console.WriteLine("Multi line input not supported - run Acceptance Tests to demo multi line support.");
Console.WriteLine("------------------------------------------------------");
Console.WriteLine();
do
{
try
{
var result = calculator.Add(input);
Console.WriteLine($"Sum = {result}");
Console.WriteLine();
}
catch (InvalidNumbersException iex)
{
Console.WriteLine(iex.Message);
}
Console.WriteLine("Enter some delimited numbers...");
input = Console.ReadLine();
} while (!input.Equals("exit", StringComparison.InvariantCultureIgnoreCase));
}
public void Does_Add_Multi_Line_Comma_Delimited_And_Ignores_Too_Large_Numbers()
{
//Arrange
var calculator = new BasicStringCalculator();
var inputString = File.ReadAllText(@".\Samples\MultiLineCommaSeparatedWithIgnoredNumbers.txt");
//Act
var result = calculator.Add(inputString);
//Assert
Assert.AreEqual(41, result);
}
public void Does_Add_Multi_Line_With_Multiple_Custom_Delimiters()
{
//Arrange
var calculator = new BasicStringCalculator();
var inputString = File.ReadAllText(@".\Samples\MultiDelimiterMultiLine.txt");
//Act
var result = calculator.Add(inputString);
//Assert
Assert.AreEqual(42, result);
}
public void Does_Add_Multi_Line_Comma_Delimited()
{
//Arrange
var calculator = new BasicStringCalculator();
var inputString = File.ReadAllText(@".\Samples\MultiLineCommaSeparated.txt");
//Act
var result = calculator.Add(inputString);
//Assert
Assert.AreEqual(51, result);
}
public void Does_Return_Zero_When_Empty_String()
{
//Arrange
var calculator = new BasicStringCalculator();
var inputString = "";
//Act
var result = calculator.Add(inputString);
//Assert
Assert.AreEqual(0, result);
}
public void Does_Throw_Error_When_Negative_Numbers_Found()
{
//Arrange
var calculator = new BasicStringCalculator();
var inputString = File.ReadAllText(@".\Samples\MultiLineCommaSeparatedWithNegativeNumbers.txt");
var expectedNegativeNumbers = new[] { -1, -2, -3, -4 };
Exception ex = null;
//Act
try
{
var result = calculator.Add(inputString);
} catch (Exception nex)
{
ex = nex;
}
//Assert
Assert.IsInstanceOfType(ex, typeof(InvalidNumbersException));
var invalidNumbers = ((InvalidNumbersException)ex).InvalidNumbers;
Assert.AreEqual(4, invalidNumbers.Count());
Assert.AreEqual(4, invalidNumbers.Intersect(expectedNegativeNumbers).Count());
}