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// __| | __| | | | JSON for Modern C++ (supporting code)
// | | |__ | | | | | | version 3.11.3
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// Copyright (c) 2013-2022 Niels Lohmann <http://nlohmann.me>.
// SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#include "doctest_compatibility.h"
#ifdef JSON_DIAGNOSTICS
#undef JSON_DIAGNOSTICS
#endif
#define JSON_DIAGNOSTICS 1
#include <nlohmann/json.hpp>
using nlohmann::json;
TEST_CASE("Better diagnostics")
{
SECTION("empty JSON Pointer")
{
json const j = 1;
std::string s;
CHECK_THROWS_WITH_AS(s = j.get<std::string>(), "[json.exception.type_error.302] type must be string, but is number", json::type_error);
}
SECTION("invalid type")
{
json j;
j["a"]["b"]["c"] = 1;
std::string s;
CHECK_THROWS_WITH_AS(s = j["a"]["b"]["c"].get<std::string>(), "[json.exception.type_error.302] (/a/b/c) type must be string, but is number", json::type_error);
}
SECTION("missing key")
{
json j;
j["object"]["object"] = true;
CHECK_THROWS_WITH_AS(j["object"].at("not_found"), "[json.exception.out_of_range.403] (/object) key 'not_found' not found", json::out_of_range);
}
SECTION("array index out of range")
{
json j;
j["array"][4] = true;
CHECK_THROWS_WITH_AS(j["array"].at(5), "[json.exception.out_of_range.401] (/array) array index 5 is out of range", json::out_of_range);
}
SECTION("array index at wrong type")
{
json j;
j["array"][4] = true;
CHECK_THROWS_WITH_AS(j["array"][4][5], "[json.exception.type_error.305] (/array/4) cannot use operator[] with a numeric argument with boolean", json::type_error);
}
SECTION("wrong iterator")
{
json j;
j["array"] = json::array();
CHECK_THROWS_WITH_AS(j["array"].erase(j.begin()), "[json.exception.invalid_iterator.202] (/array) iterator does not fit current value", json::invalid_iterator);
}
SECTION("JSON Pointer escaping")
{
json j;
j["a/b"]["m~n"] = 1;
std::string s;
CHECK_THROWS_WITH_AS(s = j["a/b"]["m~n"].get<std::string>(), "[json.exception.type_error.302] (/a~1b/m~0n) type must be string, but is number", json::type_error);
}
SECTION("Parse error")
{
json _;
CHECK_THROWS_WITH_AS(_ = json::parse(""), "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error);
}
SECTION("Wrong type in update()")
{
json j = {{"foo", "bar"}};
json k = {{"bla", 1}};
CHECK_THROWS_WITH_AS(j.update(k["bla"].begin(), k["bla"].end()), "[json.exception.type_error.312] (/bla) cannot use update() with number", json::type_error);
CHECK_THROWS_WITH_AS(j.update(k["bla"]), "[json.exception.type_error.312] (/bla) cannot use update() with number", json::type_error);
}
}
TEST_CASE("Regression tests for extended diagnostics")
{
SECTION("Regression test for https://github.com/nlohmann/json/pull/2562#pullrequestreview-574858448")
{
CHECK_THROWS_WITH_AS(json({"0", "0"})[1].get<int>(), "[json.exception.type_error.302] (/1) type must be number, but is string", json::type_error);
CHECK_THROWS_WITH_AS(json({"0", "1"})[1].get<int>(), "[json.exception.type_error.302] (/1) type must be number, but is string", json::type_error);
}
SECTION("Regression test for https://github.com/nlohmann/json/pull/2562/files/380a613f2b5d32425021129cd1f371ddcfd54ddf#r563259793")
{
json j;
j["/foo"] = {1, 2, 3};
CHECK_THROWS_WITH_AS(j.unflatten(), "[json.exception.type_error.315] (/~1foo) values in object must be primitive", json::type_error);
}
SECTION("Regression test for issue #2838 - Assertion failure when inserting into arrays with JSON_DIAGNOSTICS set")
{
// void push_back(basic_json&& val)
{
json j_arr = json::array();
j_arr.push_back(json::object());
j_arr.push_back(json::object());
j_arr.push_back(json::object());
j_arr.push_back(json::object());
json j_obj = json::object();
j_obj["key"] = j_arr;
}
// void push_back(const basic_json& val)
{
json j_arr = json::array();
auto object = json::object();
j_arr.push_back(object);
j_arr.push_back(object);
j_arr.push_back(object);
j_arr.push_back(object);
json j_obj = json::object();
j_obj["key"] = j_arr;
}
// reference emplace_back(Args&& ... args)
{
json j_arr = json::array();
j_arr.emplace_back(json::object());
j_arr.emplace_back(json::object());
j_arr.emplace_back(json::object());
j_arr.emplace_back(json::object());
json j_obj = json::object();
j_obj["key"] = j_arr;
}
// iterator insert(const_iterator pos, const basic_json& val)
{
json j_arr = json::array();
j_arr.insert(j_arr.begin(), json::object());
j_arr.insert(j_arr.begin(), json::object());
j_arr.insert(j_arr.begin(), json::object());
j_arr.insert(j_arr.begin(), json::object());
json j_obj = json::object();
j_obj["key"] = j_arr;
}
// iterator insert(const_iterator pos, size_type cnt, const basic_json& val)
{
json j_arr = json::array();
j_arr.insert(j_arr.begin(), 2, json::object());
json j_obj = json::object();
j_obj["key"] = j_arr;
}
// iterator insert(const_iterator pos, const_iterator first, const_iterator last)
{
json j_arr = json::array();
json j_objects = {json::object(), json::object()};
j_arr.insert(j_arr.begin(), j_objects.begin(), j_objects.end());
json j_obj = json::object();
j_obj["key"] = j_arr;
}
}
SECTION("Regression test for issue #2962 - JSON_DIAGNOSTICS assertion for ordered_json")
{
nlohmann::ordered_json j;
nlohmann::ordered_json j2;
const std::string value;
j["first"] = value;
j["second"] = value;
j2["something"] = j;
}
SECTION("Regression test for issue #3007 - Parent pointers properly set when using update()")
{
// void update(const_reference j)
{
json j = json::object();
{
json j2 = json::object();
j2["one"] = 1;
j.update(j2);
}
// Must call operator[] on const element, otherwise m_parent gets updated.
auto const& constJ = j;
CHECK_THROWS_WITH_AS(constJ["one"].at(0), "[json.exception.type_error.304] (/one) cannot use at() with number", json::type_error);
}
// void update(const_iterator first, const_iterator last)
{
json j = json::object();
{
json j2 = json::object();
j2["one"] = 1;
j.update(j2.begin(), j2.end());
}
// Must call operator[] on const element, otherwise m_parent gets updated.
auto const& constJ = j;
CHECK_THROWS_WITH_AS(constJ["one"].at(0), "[json.exception.type_error.304] (/one) cannot use at() with number", json::type_error);
}
// Code from #3007 triggering unwanted assertion without fix to update().
{
json root = json::array();
json lower = json::object();
{
json lowest = json::object();
lowest["one"] = 1;
lower.update(lowest);
}
root.push_back(lower);
}
}
SECTION("Regression test for issue #3032 - Yet another assertion failure when inserting into arrays with JSON_DIAGNOSTICS set")
{
// reference operator[](size_type idx)
{
json j_arr = json::array();
j_arr[0] = 0;
j_arr[1] = 1;
j_arr[2] = 2;
j_arr[3] = 3;
j_arr[4] = 4;
j_arr[5] = 5;
j_arr[6] = 6;
j_arr[7] = 7;
json const j_arr_copy = j_arr;
}
}
}
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