Function check

test/path_unit_test.cpp:135–142

  }

  void check(bool ok, const char* file, int line)
  {
    if (ok) return;

    ++::boost::detail::test_errors();

    std::cout << file << '(' << line << "): test failed\n";
  }

  string s("string");
  wstring ws(L"wstring");