public void ConvertFromIntToRomanNumeral_IntsAreOutOfRange_Throws(int invalidNumber)
{
RomanNumeralsConverter conv = new RomanNumeralsConverter();
var ex = Assert.Throws <ArgumentException>(() => conv.ConvertFromIntToRomanNumeral(invalidNumber));
StringAssert.Contains("This isn't roman numeral", ex.Message);
}
public void ConvertFromIntToRomanNumeral_ValidInts_ReturnsRomanNumeral(int number, string expected)
{
RomanNumeralsConverter conv = new RomanNumeralsConverter();
string result = conv.ConvertFromIntToRomanNumeral(number);
Assert.AreEqual(expected, result);
}