public void SingleRomanNumeralsShouldReturnProperIntegerValues()
{
Assert.Equal(1, Fixture.ConvertRomanNumeralsToArabic("i"));
Assert.Equal(5, Fixture.ConvertRomanNumeralsToArabic("v"));
Assert.Equal(10, Fixture.ConvertRomanNumeralsToArabic("x"));
Assert.Equal(50, Fixture.ConvertRomanNumeralsToArabic("l"));
Assert.Equal(100, Fixture.ConvertRomanNumeralsToArabic("c"));
Assert.Equal(500, Fixture.ConvertRomanNumeralsToArabic("d"));
Assert.Equal(1000, Fixture.ConvertRomanNumeralsToArabic("m"));
}