text: //
  // Created by ilya on 06.09.2019.
  //
  
  #ifndef BASETESTFRAMEWORK_H_
  #define BASETESTFRAMEWORK_H_
  
  #include <sstream>
  #include <exception>
  #include <iostream>
  #include <string>
  #include <map>
  #include <set>
  
  using namespace std;
  
  template <class T>
  ostream& operator << (ostream& os, const set<T>& s) {
    os << "{";
    bool first = true;
    for (const auto& x : s) {
      if (!first) {
        os << ", ";
      }
      first = false;
      os << x;
    }
    return os << "}";
  }
  
  template <class K, class V>
  ostream& operator << (ostream& os, const map<K, V>& m) {
    os << "{";
    bool first = true;
    for (const auto& kv : m) {
      if (!first) {
        os << ", ";
      }
      first = false;
      os << kv.first << ": " << kv.second;
    }
    return os << "}";
  }
  
  template<class T, class U>
  void AssertEqual(const T& t, const U& u,
                   const string& hint)
  {
    if (t != u) {
      ostringstream os;
      os << "Assertion failed: " << t << " != " << u
         << " hint: " << hint;
      throw runtime_error(os.str());
    }
  }
  
  inline void Assert(bool b, const string& hint) {
    AssertEqual(b, true, hint);
  }
  
  class TestRunner {
   public:
    template <class TestFunc>
    void RunTest(TestFunc func, const string& test_name) {
      try {
        func();
        cerr << test_name << " OK" << endl;
      } catch (runtime_error& e) {
        ++fail_count;
        cerr << test_name << " fail: " << e.what() << endl;
      }
    }
  
    ~TestRunner() {
      if (fail_count > 0) {
        cerr << fail_count << " unit tests failed. Terminate" << endl;
        exit(1);
      }
    }
  
   private:
    int fail_count = 0;
  };
  
  
  #endif //BASETESTFRAMEWORK_H_
  