Function parse_first

tests/unit/command/argument_parser_tests.cpp:12–19

TEST_SUITE(ArgumentParser) {

unsigned parse_first(std::vector<std::string> args) {
    for(auto& result: option::table().parse(args)) {
        if(result.has_value()) {
            return result->id;
        }
    }
    return OPT_INVALID;
}

TEST_CASE(ParseOptionID) {
    ASSERT_EQ(parse_first({"-g"}), OPT_g_Flag);