question.hpp

#ifndef __CSE3150_TESTING_ASGN2_QUESTION_H
#define __CSE3150_TESTING_ASGN2_QUESTION_H

#include <iostream>
#include <system_error>
#include <subprocess.hpp>
#include <internal/explode.hpp>
#include <internal/exists.hpp>
#include <optional.hpp>

struct Question {
  std::string id;
  std::string desc;

  std::string directory() const {
    return "./asgn2/" + this->id + "/";
  }

  std::string wlist_path() const {
    return this->directory() + "WList.cpp";
  }

  std::string binary_path() const {
    return this->directory() + "wlist";
  }

  tl::optional<std::vector<std::string>> exec(const std::string& in) const {
    if (!exists(this->binary_path())) {
      return tl::nullopt;
    }

    try {
      subprocess::popen cmd(this->binary_path(), {});
      cmd.stdin() << in << std::endl;
      cmd.close();

      std::stringstream s;
      s << cmd.stdout().rdbuf();
      std::string out = s.str();

      return explode(out, '\n');
    } catch (std::system_error) {
      return tl::nullopt;
    }
  }

  bool passes_valgrind(const std::string& in) const {
    if (!exists(this->binary_path())) {
      return false;
    }

    try {
      subprocess::popen cmd("valgrind", {
        "--error-exitcode=1",
        "--leak-check=full",
        this->binary_path()
      });
      cmd.stdin() << in << std::endl;
      cmd.close();
      int exit_status = cmd.wait();
      return exit_status != 1;
    } catch (std::system_error) {
      return false;
    }

    return false;
  }
};

#endif