#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN

#include 
#include 

class CustomWorkerBehavior : public tf::WorkerInterface {

  public:

  CustomWorkerBehavior(std::atomic& counter, std::vector& ids) : 
    _counter {counter},
    _ids     {ids} {
  }
  
  void scheduler_prologue(tf::Worker& wv) override {
    _counter++;

    std::scoped_lock lock(_mutex);
    _ids.push_back(wv.id());
  }

  void scheduler_epilogue(tf::Worker&, std::exception_ptr) override {
    _counter++;
  }

  std::atomic& _counter;
  std::vector& _ids;

  std::mutex _mutex;

};

void worker_interface_basics(unsigned W) {

  std::atomic counter{0};
  std::vector ids;

  {
    tf::Executor executor(W, tf::make_worker_interface(counter, ids));
  }

  REQUIRE(counter == W*2);
  REQUIRE(ids.size() == W);

  std::sort(ids.begin(), ids.end());

  for(size_t i=0; i