public void IntersectUniverse() { Assert.AreEqual(LongSet.Universe, LongSet.Universe.IntersectWith(LongSet.Universe)); Assert.AreEqual(LongSet.Empty, LongSet.Universe.IntersectWith(LongSet.Empty)); Assert.AreEqual(new LongSet(long.MaxValue), LongSet.Universe.IntersectWith(new LongSet(long.MaxValue))); var longSet = new LongSet(new[] { new LongInterval(1, 5), new LongInterval(6, 7) }.ToImmutableArray()); Assert.AreEqual(longSet, longSet.IntersectWith(LongSet.Universe)); }