Function certFile

lib/cpp/test/SecurityFromBufferTest.cpp:50–52

boost::filesystem::path keyDir;
boost::filesystem::path certFile(const std::string& filename) {
  return keyDir / filename;
}
std::string certString(const std::string& filename) {
  std::ifstream ifs(certFile(filename).string());
  if(!ifs.is_open() || !ifs.good()) {