testPureBitSet

fn testPureBitSet(comptime Set: type) !void {
    const empty = Set.empty;
    const full = Set.full;

    const even = even: {
        var bit_set = Set.empty;
        fillEven(&bit_set, Set.bit_length);
        break :even bit_set;
    };

    const odd = odd: {
        var bit_set = Set.empty;
        fillOdd(&bit_set, Set.bit_length);
        break :odd bit_set;
    };

    try testSubsetOf(empty, full, even, odd, Set.bit_length);
    try testSupersetOf(empty, full, even, odd, Set.bit_length);

    try testing.expect(empty.complement().eql(full));
    try testing.expect(full.complement().eql(empty));
    try testing.expect(even.complement().eql(odd));
    try testing.expect(odd.complement().eql(even));

    try testing.expect(empty.unionWith(empty).eql(empty));
    try testing.expect(empty.unionWith(full).eql(full));
    try testing.expect(full.unionWith(full).eql(full));
    try testing.expect(full.unionWith(empty).eql(full));
    try testing.expect(even.unionWith(odd).eql(full));
    try testing.expect(odd.unionWith(even).eql(full));

    try testing.expect(empty.intersectWith(empty).eql(empty));
    try testing.expect(empty.intersectWith(full).eql(empty));
    try testing.expect(full.intersectWith(full).eql(full));
    try testing.expect(full.intersectWith(empty).eql(empty));
    try testing.expect(even.intersectWith(odd).eql(empty));
    try testing.expect(odd.intersectWith(even).eql(empty));

    try testing.expect(empty.xorWith(empty).eql(empty));
    try testing.expect(empty.xorWith(full).eql(full));
    try testing.expect(full.xorWith(full).eql(empty));
    try testing.expect(full.xorWith(empty).eql(full));
    try testing.expect(even.xorWith(odd).eql(full));
    try testing.expect(odd.xorWith(even).eql(full));

    try testing.expect(empty.differenceWith(empty).eql(empty));
    try testing.expect(empty.differenceWith(full).eql(empty));
    try testing.expect(full.differenceWith(full).eql(empty));
    try testing.expect(full.differenceWith(empty).eql(full));
    try testing.expect(full.differenceWith(odd).eql(even));
    try testing.expect(full.differenceWith(even).eql(odd));
}