// __ _____ _____ _____ // __| | __| | | | JSON for Modern C++ (supporting code) // | | |__ | | | | | | version 3.11.2 // |_____|_____|_____|_|___| https://github.com/nlohmann/json // // SPDX-FileCopyrightText: 2013-2022 Niels Lohmann // SPDX-License-Identifier: MIT #include "doctest_compatibility.h" #include using nlohmann::json; using nlohmann::ordered_json; TEST_CASE("ordered_json") { json j; ordered_json oj; j["element3"] = 3; j["element1"] = 1; j["element2"] = 2; oj["element3"] = 3; oj["element1"] = 1; oj["element2"] = 2; CHECK(j.dump() == "{\"element1\":1,\"element2\":2,\"element3\":3}"); CHECK(oj.dump() == "{\"element3\":3,\"element1\":1,\"element2\":2}"); CHECK(j == json(oj)); CHECK(ordered_json(json(oj)) == ordered_json(j)); j.erase("element1"); oj.erase("element1"); CHECK(j.dump() == "{\"element2\":2,\"element3\":3}"); CHECK(oj.dump() == "{\"element3\":3,\"element2\":2}"); // remove again and nothing changes j.erase("element1"); oj.erase("element1"); CHECK(j.dump() == "{\"element2\":2,\"element3\":3}"); CHECK(oj.dump() == "{\"element3\":3,\"element2\":2}"); // There are no dup keys cause constructor calls emplace... json multi {{"z", 1}, {"m", 2}, {"m", 3}, {"y", 4}, {"m", 5}}; CHECK(multi.size() == 3); CHECK(multi.dump() == "{\"m\":2,\"y\":4,\"z\":1}"); ordered_json multi_ordered {{"z", 1}, {"m", 2}, {"m", 3}, {"y", 4}, {"m", 5}}; CHECK(multi_ordered.size() == 3); CHECK(multi_ordered.dump() == "{\"z\":1,\"m\":2,\"y\":4}"); CHECK(multi_ordered.erase("m") == 1); CHECK(multi_ordered.dump() == "{\"z\":1,\"y\":4}"); // Ranged insert test. // It seems that values shouldn't be overwritten. Only new values are added json j1 {{"c", 1}, {"b", 2}, {"a", 3}}; const json j2 {{"c", 77}, {"d", 42}, {"a", 4}}; j1.insert( j2.cbegin(), j2.cend() ); CHECK(j1.size() == 4); CHECK(j1.dump() == "{\"a\":3,\"b\":2,\"c\":1,\"d\":42}"); ordered_json oj1 {{"c", 1}, {"b", 2}, {"a", 3}}; const ordered_json oj2 {{"c", 77}, {"d", 42}, {"a", 4}}; oj1.insert( oj2.cbegin(), oj2.cend() ); CHECK(oj1.size() == 4); CHECK(oj1.dump() == "{\"c\":1,\"b\":2,\"a\":3,\"d\":42}"); }