Function error

test/expected/issues.cpp:63–65

}

static cxx20::expected<int, std::string> error() {
  return cxx20::unexpected(std::string("error1 "));
}
static std::string maperror(std::string s) { return s + "maperror "; }

TEST(RegressionTest, Issue30) { error().map_error(maperror); }