public void GetHashCodeTest()
{
//Arrange
var frac1 = new Fraction(0.5);
var frac2 = new Fraction(1, 2);
var frac3 = Fraction.Parse("-1/2");
//Act
Fraction frac2_alt = (Fraction)frac2.Clone();
frac2_alt.Numerator += 1;
//Assert
Assert.AreEqual(frac1.GetHashCode(), frac2.GetHashCode());
Assert.AreNotEqual(frac1.GetHashCode(), frac3.GetHashCode());
Assert.AreNotEqual(frac2.GetHashCode(), frac2_alt.GetHashCode());
}
public void CompareToTest()
{
//Arrange
Fraction a = new Fraction(2, 5);
Fraction a_str = new Fraction(20, 50);
Fraction b = new Fraction(1, 2);
Fraction c = b.Clone() as Fraction;
c.Numerator *= 2;
c.Denominator *= 2;
Fraction d = -(b.Clone() as Fraction);
//Act
var result1 = b.CompareTo(a);
var result2 = c.CompareTo(b);
var result3 = d.CompareTo(a);
var result4 = a.CompareTo(a_str);
//Assert
Assert.AreEqual(1, result1);
Assert.AreEqual(0, result2);
Assert.AreEqual(-1, result3);
Assert.AreEqual(0, result4);
}
public void EqualsTest()
{
//Arrange
Fraction x = new Fraction(6, 8);
Fraction y = new Fraction(3, 4);
Fraction z = new Fraction(1, 1);
z.Numerator = 12;
z.Denominator = 16;
Fraction a = new Fraction(-12, 16);
object k = x.Clone();
object m = z.Clone();
object notFrac = new Double();
notFrac = 5;
Fraction l = null;
//Assert
Assert.IsTrue(x.Equals(x)); //Рефлексивность
Assert.AreEqual(x.Equals(y), y.Equals(x)); //Симметричность
Assert.AreEqual(y.Equals(z), x.Equals(z)); //Транзитивность
Assert.IsFalse(k.Equals(a));
Assert.IsFalse(k.Equals(null));
Assert.IsFalse(k.Equals(notFrac));
Assert.IsTrue(k.Equals(m));
Assert.IsFalse(k.Equals(l));
Assert.IsTrue(y.Equals(k));
Assert.IsFalse(z.Equals(null));
}
public void CloneFractionTest()
{
//Arrange
ulong numerator = 123;
ulong denominatior = 456;
Fraction srcFraction = new Fraction(numerator, denominatior);
Fraction expectedFraction = new Fraction(numerator, denominatior);
//Act
Fraction dstFraction = srcFraction.Clone() as Fraction;
//Assert
Assert.AreEqual(expectedFraction.Numerator, dstFraction.Numerator);
Assert.AreEqual(expectedFraction.Denominator, dstFraction.Denominator);
Assert.AreEqual(expectedFraction.IsNegative, dstFraction.IsNegative);
}