public void AddCanTakeStringWithNewLineOrCommaDelimetersAsArgument()
{
// Arrange
var calculator = new Calculator();
// Act
int result = calculator.Add("1\n2,3");
// Assert
Assert.AreEqual(6, result);
}
public void AddCanTakeStringWithOneNumberAsArgument()
{
// Arrange
var calculator = new Calculator();
// Act
int result = calculator.Add("1");
// Assert
Assert.AreEqual(1, result);
}
public void AddCanSupportDifferentDelimeters()
{
// Arrange
var calculator = new Calculator();
// Act
int result = calculator.Add("//;\n1;2");
// Assert
Assert.AreEqual(3, result);
}
public void AddCanTakeEmptyStringAsArgument()
{
// Arrange
var calculator = new Calculator();
// Act
int result = calculator.Add("");
// Assert
Assert.AreEqual(0, result);
}
public void AddCanTakeStringWithUnknownAmountOfNumbersAsArgument()
{
// Arrange
var calculator = new Calculator();
var numbers = new int[10];
var random = new Random();
for (int i = 0; i < numbers.Length; ++i) {
numbers[i] = random.Next(0, 20);
}
var sum = numbers.Sum();
var numbersString = string.Join(",", numbers.Select(n => n.ToString()));
// Act
int result = calculator.Add(numbersString);
// Assert
Assert.AreEqual(sum, result);
}
public void DelimetersCanBeOfAnyLength()
{
// Arrange
var calculator = new Calculator();
// Act
int result = calculator.Add("//[***]\n1***2***3");
// Assert
Assert.AreEqual(6, result);
}
public void CallingAddWithNegativeNumbersWillThrowAnExceptionWithPassedNegativesAsMessage()
{
// Arrange
var calculator = new Calculator();
var result1 = "";
var result2 = "";
// Act 1
try {
calculator.Add("-1,2");
} catch (LessThanZeroException exception) {
result1 = exception.Message;
}
// Act 2
try {
calculator.Add("-1,2,-183");
} catch (LessThanZeroException exception) {
result2 = exception.Message;
}
// Assert
Assert.AreEqual("-1", result1);
Assert.AreEqual("-1,-183", result2);
}
public void CalculatorAllowMultipleDelimetersOfAnyLength()
{
// Arrange
var calculator = new Calculator();
// Act
int result = calculator.Add("//[***][%&@]\n1***2***3%&@5");
// Assert
Assert.AreEqual(11, result);
}
public void CalculatorAllowMultipleDelimeters()
{
// Arrange
var calculator = new Calculator();
// Act
int result = calculator.Add("//[*][%]\n1***2***3");
// Assert
Assert.AreEqual(6, result);
}
public void AddSkipNumbersBiggerThanThousand()
{
// Arrange
var calculator = new Calculator();
// Act
int result = calculator.Add("2,1001");
// Assert
Assert.AreEqual(2, result);
}