public void ComparisonTests()
{
var x = new Portion(0.4);
var y = new Portion(0.4);
var z = new Portion(0.8);
Assert.IsTrue(x.Value == y.Value);
Assert.IsTrue(x.Value != z.Value);
Assert.IsTrue(x == y);
Assert.IsFalse(x == z);
Assert.IsFalse(y == z);
Assert.IsFalse(x != y);
Assert.IsTrue(x != z);
Assert.IsTrue(y != z);
Assert.IsTrue(z > x);
Assert.IsFalse(z < x);
Assert.IsFalse(x > y);
Assert.IsTrue(x >= y);
Assert.IsFalse(x < y);
Assert.IsTrue(x <= y);
Assert.AreEqual(0, x.CompareTo(y));
Assert.IsTrue(x.CompareTo(z) < 0);
Assert.IsTrue(z.CompareTo(y) > 0);
}
