public void Add_EmptyString_Returns0()
{
var sut = new StringCalculator20191201();
var result = sut.Add("");
Assert.AreEqual(0, result);
}
public void Add_DelimterSpecifiedBeforeNumbers_UsesSpecifiedDelimiter()
{
var sut = new StringCalculator20191201();
var result = sut.Add("//;\n1;2;5");
Assert.AreEqual(8, result);
}
public void Add_NumbersSeparatedByNewLine_ReturnsSumOfNumbers()
{
var sut = new StringCalculator20191201();
var result = sut.Add("1\n3");
Assert.AreEqual(4, result);
}
public void Add_MultipleNumbersSeparatedByCommas_ReturnsSumOfAllNumbers(string numbers, int expectedSum)
{
var sut = new StringCalculator20191201();
var result = sut.Add(numbers);
Assert.AreEqual(expectedSum, result);
}
public void Add_SingleNumber_ReturnsSingleNumber()
{
var sut = new StringCalculator20191201();
var result = sut.Add("2");
Assert.AreEqual(2, result);
}
public void Add_NegativeNumbers_ThrowsExceptionWithMessageContainingTheInvalidValues()
{
var sut = new StringCalculator20191201();
var exception = Assert.ThrowsException <Exception>(() => sut.Add("1,-2,-5"));
Assert.IsTrue(exception.Message.Contains("-5"));
Assert.IsTrue(exception.Message.Contains("-2"));
}
