research-portable-memory/main.cpp

#include <map>
#include <string>

std::map<int, int> memory_generateConstPlayfield(
  int n
) {
  std::map<int, int> idGroups;
  auto id = 0;
  for (auto gid = 0; gid < n; ++gid) {
    idGroups[id] = gid;
    id += 1;
    idGroups[id] = gid;
    id += 1;
  }
  return idGroups;
}

std::string test_memory_generateConstPlayfield() {
  auto idGroups = memory_generateConstPlayfield(2);
  if (
    idGroups.size() == 4 &&
    idGroups[0] == 0 &&
    idGroups[1] == 0 &&
    idGroups[2] == 1 &&
    idGroups[3] == 1
  ) {
    return "OK: memory_generateConstPlayfield";
  }

  return "ERR: memory_generateConstPlayfield";
}

int main() {
  printf("%s\n", test_memory_generateConstPlayfield().c_str());
}