public void Index2LengthTest()
{
int length = 2;
Index2 i1 = new Index2(length, 0);
Index2 i2 = new Index2(0, length);
Assert.Equals(i1.LengthSquared(), 4.0);
Assert.Equals(i2.LengthSquared(), 4.0);
Assert.Equals(i1.Length(), 2.0);
Assert.Equals(i2.Length(), 2.0);
Index2 i3 = new Index2(3, 4);
Index2 i4 = new Index2(4, 3);
Assert.Equals(i3.LengthSquared(), 25.0);
Assert.Equals(i4.LengthSquared(), 25.0);
Assert.Equals(i3.Length(), 5.0);
Assert.Equals(i4.Length(), 5.0);
}