public void ThrowsExceptionForSubstractionFaultForX()
{
var exceptionForD = false;
var exceptionForM = false;
try { RomanToDecimalConverter.Convert("ID"); }
catch (InvalidRomanNumberException) { exceptionForD = true; }
try { RomanToDecimalConverter.Convert("IM"); }
catch (InvalidRomanNumberException) { exceptionForM = true; }
Assert.AreEqual(11, RomanToDecimalConverter.Convert("XI"));
Assert.AreEqual(15, RomanToDecimalConverter.Convert("XV"));
Assert.AreEqual(20, RomanToDecimalConverter.Convert("XX"));
Assert.AreEqual(40, RomanToDecimalConverter.Convert("XL"));
Assert.AreEqual(90, RomanToDecimalConverter.Convert("XC"));
Assert.IsTrue(exceptionForD);
Assert.IsTrue(exceptionForM);
}
public void DNeverCanSubtracted()
{
var exceptionForDD = false;
var exceptionForDM = false;
Assert.AreEqual(501, RomanToDecimalConverter.Convert("DI"));
Assert.AreEqual(505, RomanToDecimalConverter.Convert("DV"));
Assert.AreEqual(510, RomanToDecimalConverter.Convert("DX"));
Assert.AreEqual(550, RomanToDecimalConverter.Convert("DL"));
Assert.AreEqual(600, RomanToDecimalConverter.Convert("DC"));
try { RomanToDecimalConverter.Convert("DD"); }
catch (InvalidRomanNumberException) { exceptionForDD = true; }
try { RomanToDecimalConverter.Convert("DM"); }
catch (InvalidRomanNumberException) { exceptionForDM = true; }
Assert.IsTrue(exceptionForDD);
Assert.IsTrue(exceptionForDM);
}
public void ThrowsExceptionForSubstractionFaultForI()
{
var exceptionForL = false;
var exceptionForC = false;
var exceptionForD = false;
var exceptionForM = false;
try{ RomanToDecimalConverter.Convert("IL"); }
catch (InvalidRomanNumberException) { exceptionForL = true; }
try { RomanToDecimalConverter.Convert("IC"); }
catch (InvalidRomanNumberException) { exceptionForC = true; }
try { RomanToDecimalConverter.Convert("ID"); }
catch (InvalidRomanNumberException) { exceptionForD = true; }
try { RomanToDecimalConverter.Convert("IM"); }
catch (InvalidRomanNumberException) { exceptionForM = true; }
Assert.IsTrue(exceptionForL);
Assert.IsTrue(exceptionForC);
Assert.IsTrue(exceptionForD);
Assert.IsTrue(exceptionForM);
Assert.AreEqual(4, RomanToDecimalConverter.Convert("IV"));
Assert.AreEqual(9, RomanToDecimalConverter.Convert("IX"));
}
public RomanToDecimalConverterTests()
{
_target = new RomanToDecimalConverter();
}
public void ThrowsExceptionForRepettitionFaultForM()
{
RomanToDecimalConverter.Convert("MMMM");
}