public static void CompareTo_And_ComparisonOperators(int first, int other, int expectedSign)
{
Rune a = new Rune(first);
Rune b = new Rune(other);
Assert.Equal(expectedSign, Math.Sign(a.CompareTo(b)));
Assert.Equal(expectedSign < 0, a < b);
Assert.Equal(expectedSign <= 0, a <= b);
Assert.Equal(expectedSign > 0, a > b);
Assert.Equal(expectedSign >= 0, a >= b);
}
public static void Operators_And_CompareTo(uint scalarValueLeft, uint scalarValueRight)
{
Rune left = new Rune(scalarValueLeft);
Rune right = new Rune(scalarValueRight);
Assert.Equal(scalarValueLeft == scalarValueRight, left == right);
Assert.Equal(scalarValueLeft != scalarValueRight, left != right);
Assert.Equal(scalarValueLeft < scalarValueRight, left < right);
Assert.Equal(scalarValueLeft <= scalarValueRight, left <= right);
Assert.Equal(scalarValueLeft > scalarValueRight, left > right);
Assert.Equal(scalarValueLeft >= scalarValueRight, left >= right);
Assert.Equal(scalarValueLeft.CompareTo(scalarValueRight), left.CompareTo(right));
}
public static void NonGenericCompareTo_GivenNonRuneArgument_ThrowsArgumentException()
{
IComparable rune = new Rune(0);
Assert.Throws <ArgumentException>(() => rune.CompareTo(0 /* int32 */));
}
