Function compare_match

test/jsonpath/src/jsonpath_flatten_tests.cpp:113–123

namespace {

    void compare_match(jsoncons::json& doc,
                       const std::string& path, 
                       const std::string& value)
    {
        auto result = jsoncons::jsonpath::json_query(doc, path);
        CHECK_FALSE(result.empty()); // must match //-V521
        CHECK_FALSE(result.size() > 1); // too many matches //-V521

        auto matched_value = result[0].as<std::string>();
        CHECK(value == matched_value); //-V521
    }

} // namespace