public void MinMaxSumTest()
{
OclOrderedSet source = TestUtils.CreateIntOrderedSet(1, 2, 3, 1);
TestUtils.AreEqual((OclInteger)6, source.sum((OclInteger)0, (x, y) => x + y));
TestUtils.AreEqual((OclInteger)1, source.min <OclInteger>((x, y) => x.min(y)));
TestUtils.AreEqual((OclInteger)3, source.max <OclInteger>((x, y) => x.max(y)));
}