public void GCDIsCorrectForSampleTests(int firstNumber, int secondNumber, int expectedResult)
{
GreatestCommonDenominator gcd = new GreatestCommonDenominator();
int value = gcd.findGCD(firstNumber, secondNumber);
Assert.Equal(expectedResult, value);
}
public void GCDIsFirstParameterWhenSecondParameterIsZero(int nonZeroNumber)
{
GreatestCommonDenominator gcd = new GreatestCommonDenominator();
int value = gcd.findGCD(nonZeroNumber, 0);
Assert.Equal(nonZeroNumber, value);
}
public void GCDIsOneWhenOneParameterIsOne(int firstNumber, int secondNumber)
{
GreatestCommonDenominator gcd = new GreatestCommonDenominator();
int value = gcd.findGCD(firstNumber, secondNumber);
Assert.Equal(1, value);
}
public void GCDThrowsErrorWhenGivenNonNaturalNumber(int firstNumber, int secondNumber)
{
GreatestCommonDenominator gcd = new GreatestCommonDenominator();
Action act = () => gcd.findGCD(firstNumber, secondNumber);
Assert.Throws <ArgumentException>(act);
}
public void ContinuedFractionsShouldReturnCorrectNextValues(int numerator, int denominator)
{
ContinuedFractions cf = new ContinuedFractions();
(int, int, int)value = cf.findNext(numerator, denominator);
int gcd = new GreatestCommonDenominator().findGCD(denominator, numerator % denominator);
Assert.Equal((numerator / denominator, denominator / gcd, (numerator % denominator) / gcd), value);
}
internal (int, int, int) findNext(int numerator, int denominator)
{
if (numerator == 0)
{
return(0, 0, 0);
}
else if (numerator < 0 || denominator <= 0)
{
throw new ArgumentException();
}
else if (denominator == 1)
{
return(numerator, 0, 0);
}
else
{
int gcd = new GreatestCommonDenominator().findGCD(denominator, numerator % denominator);
return(numerator / denominator, denominator / gcd, (numerator % denominator) / gcd);
}
}
public Factoriser()
{
gcd = new GreatestCommonDenominator();
cf = new ContinuedFractions();
}
