Function test_map_move_semantics

tests/test_container_helpers.h:317–342

// Works for: map, unordered_map, SortedHeapMap, unsorted_map_fixed, HashMapLru
template<typename MapContainer>
void test_map_move_semantics() {
    auto ptr = make_shared_int(100);

    MapContainer source;
    populate_map(source, 1, ptr);

    FL_REQUIRE(ptr.use_count() == 2);
    FL_REQUIRE(source.size() == 1);

    MapContainer destination;
    destination = fl::move(source);

    FL_CHECK(source.size() == 0);
    FL_CHECK(source.empty());
    FL_CHECK(destination.size() == 1);

    // Retrieve and check value, but let it go out of scope immediately
    {
        auto retrieved = retrieve_map(destination, 1);
        FL_CHECK(*retrieved == 100);
    }
    FL_CHECK(ptr.use_count() == 2);

    destination.clear();
    FL_CHECK(ptr.use_count() == 1);
}

// Test smart pointer move semantics (unique_ptr, shared_ptr, optional, variant, expected)
template<typename SmartPtr>