public void Gcd_ShouldReturnCorrectGcd(int expectedGcd, params int[] arguments)
{
// Arrange
// Act
var gcd = IntegerGcdCalculator.Gcd(arguments);
// Assert
gcd.Should().Be(expectedGcd);
}
public void Gcd_ShouldReturnCorrectGcd(int a, int b, int expectedGcd)
{
// Arrange
// Act
var gcd = IntegerGcdCalculator.Gcd(a, b);
// Assert
gcd.Should().Be(expectedGcd);
}
public void Gcd_IfAnyArgumentIsNegative_ShouldThrowArgumentException(int a, int b)
{
// Arrange
// Act
Action action = () => _ = IntegerGcdCalculator.Gcd(a, b);
// Assert
action.Should().Throw <ArgumentException>();
}
// TODO[mk] add random data generation + output logging
public void Gcd_ShouldBeCommutative(int a, int b)
{
// Arrange
// Act
var gcdDirect = IntegerGcdCalculator.Gcd(a, b);
var gcdInverse = IntegerGcdCalculator.Gcd(b, a);
// Assert
gcdDirect.Should().Be(gcdInverse);
}
// TODO[mk] add random data generation + output logging
public void Gcd_ShouldReturnValueWhichDivideToCoprimeQuotients(int a, int b)
{
// Arrange
// Act
var gcd = IntegerGcdCalculator.Gcd(a, b);
// Assert
var quotientA = a / gcd;
var quotientB = b / gcd;
var quotientsGcd = IntegerGcdCalculator.Gcd(quotientA, quotientB);
quotientsGcd.Should().Be(1);
}
// TODO[mk] add random data generation + output logging
public void Gcd_ShouldReturnValueWhichDivideWithoutRemainder(int a, int b)
{
// Arrange
// Act
var gcd = IntegerGcdCalculator.Gcd(a, b);
// Assert
var remainderA = a % gcd;
var remainderB = b % gcd;
remainderA.Should().Be(0);
remainderB.Should().Be(0);
}
/// <summary> /// Calculates Greatest Common Divisor (GCD) /// of arbitrary number of non-negative integer numbers. /// </summary> /// <exception cref="ArgumentException"></exception> public static int Gcd(params int[] arguments) => IntegerGcdCalculator.Gcd(arguments);
/// <summary> /// Calculates Greatest Common Divisor (GCD) /// of two non-negative integer numbers. /// </summary> /// <exception cref="ArgumentException"></exception> public static int Gcd(int a, int b) => IntegerGcdCalculator.Gcd(a, b);