| // __ _____ _____ _____ |
| // __| | __| | | | JSON for Modern C++ (supporting code) |
| // | | |__ | | | | | | version 3.11.3 |
| // |_____|_____|_____|_|___| https://github.com/nlohmann/json |
| // |
| // SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me> |
| // SPDX-License-Identifier: MIT |
| |
| // cmake/test.cmake selects the C++ standard versions with which to build a |
| // unit test based on the presence of JSON_HAS_CPP_<VERSION> macros. |
| // When using macros that are only defined for particular versions of the standard |
| // (e.g., JSON_HAS_FILESYSTEM for C++17 and up), please mention the corresponding |
| // version macro in a comment close by, like this: |
| // JSON_HAS_CPP_<VERSION> (do not remove; see note at top of file) |
| |
| #include "doctest_compatibility.h" |
| |
| // for some reason including this after the json header leads to linker errors with VS 2017... |
| #include <locale> |
| |
| #define JSON_TESTS_PRIVATE |
| #include <nlohmann/json.hpp> |
| using json = nlohmann::json; |
| using ordered_json = nlohmann::ordered_json; |
| #ifdef JSON_TEST_NO_GLOBAL_UDLS |
| using namespace nlohmann::literals; // NOLINT(google-build-using-namespace) |
| #endif |
| |
| #include <cstdio> |
| #include <list> |
| #include <type_traits> |
| #include <utility> |
| |
| #ifdef JSON_HAS_CPP_17 |
| #include <any> |
| #include <variant> |
| #endif |
| |
| #ifdef JSON_HAS_CPP_20 |
| #if __has_include(<span>) |
| #include <span> |
| #endif |
| #endif |
| |
| // for #4440 |
| #if JSON_HAS_RANGES == 1 |
| #include <ranges> |
| #endif |
| |
| // NLOHMANN_JSON_SERIALIZE_ENUM uses a static std::pair |
| DOCTEST_CLANG_SUPPRESS_WARNING_PUSH |
| DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors") |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #1021 |
| ///////////////////////////////////////////////////////////////////// |
| |
| using float_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, float>; |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #1647 |
| ///////////////////////////////////////////////////////////////////// |
| namespace |
| { |
| struct NonDefaultFromJsonStruct |
| {}; |
| |
| inline bool operator==(NonDefaultFromJsonStruct const& /*unused*/, NonDefaultFromJsonStruct const& /*unused*/) |
| { |
| return true; |
| } |
| |
| enum class for_1647 |
| { |
| one, |
| two |
| }; |
| |
| // NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays): this is a false positive |
| NLOHMANN_JSON_SERIALIZE_ENUM(for_1647, |
| { |
| {for_1647::one, "one"}, |
| {for_1647::two, "two"}, |
| }) |
| } // namespace |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #1299 |
| ///////////////////////////////////////////////////////////////////// |
| |
| struct Data |
| { |
| Data() = default; |
| Data(std::string a_, std::string b_) |
| : a(std::move(a_)) |
| , b(std::move(b_)) |
| {} |
| std::string a{}; // NOLINT(readability-redundant-member-init) |
| std::string b{}; // NOLINT(readability-redundant-member-init) |
| }; |
| |
| void from_json(const json& j, Data& data); // NOLINT(misc-use-internal-linkage) |
| void from_json(const json& j, Data& data) |
| { |
| j["a"].get_to(data.a); |
| j["b"].get_to(data.b); |
| } |
| |
| bool operator==(Data const& lhs, Data const& rhs); // NOLINT(misc-use-internal-linkage) |
| bool operator==(Data const& lhs, Data const& rhs) |
| { |
| return lhs.a == rhs.a && lhs.b == rhs.b; |
| } |
| |
| //bool operator!=(Data const& lhs, Data const& rhs) |
| //{ |
| // return !(lhs == rhs); |
| //} |
| |
| namespace nlohmann |
| { |
| template<> |
| struct adl_serializer<NonDefaultFromJsonStruct> |
| { |
| static NonDefaultFromJsonStruct from_json(json const& /*unused*/) noexcept |
| { |
| return {}; |
| } |
| }; |
| } // namespace nlohmann |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #1805 |
| ///////////////////////////////////////////////////////////////////// |
| |
| struct NotSerializableData |
| { |
| int mydata; |
| float myfloat; |
| }; |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #2574 |
| ///////////////////////////////////////////////////////////////////// |
| |
| struct NonDefaultConstructible |
| { |
| explicit NonDefaultConstructible(int a) |
| : x(a) |
| {} |
| int x; |
| }; |
| |
| namespace nlohmann |
| { |
| template<> |
| struct adl_serializer<NonDefaultConstructible> |
| { |
| static NonDefaultConstructible from_json(json const& j) |
| { |
| return NonDefaultConstructible(j.get<int>()); |
| } |
| }; |
| } // namespace nlohmann |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #2824 |
| ///////////////////////////////////////////////////////////////////// |
| |
| class sax_no_exception : public nlohmann::detail::json_sax_dom_parser<json> |
| { |
| public: |
| explicit sax_no_exception(json& j) |
| : nlohmann::detail::json_sax_dom_parser<json>(j, false) |
| {} |
| |
| static bool parse_error(std::size_t /*position*/, const std::string& /*last_token*/, const json::exception& ex) |
| { |
| error_string = new std::string(ex.what()); // NOLINT(cppcoreguidelines-owning-memory) |
| return false; |
| } |
| |
| static std::string* error_string; |
| }; |
| |
| std::string* sax_no_exception::error_string = nullptr; |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #2982 |
| ///////////////////////////////////////////////////////////////////// |
| |
| template<class T> |
| class my_allocator : public std::allocator<T> |
| { |
| public: |
| using std::allocator<T>::allocator; |
| |
| my_allocator() = default; |
| template<class U> my_allocator(const my_allocator<U>& /*unused*/) { } |
| |
| template <class U> |
| struct rebind |
| { |
| using other = my_allocator<U>; |
| }; |
| }; |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #3077 |
| ///////////////////////////////////////////////////////////////////// |
| |
| class FooAlloc |
| {}; |
| |
| class Foo |
| { |
| public: |
| explicit Foo(const FooAlloc& /* unused */ = FooAlloc()) {} |
| |
| bool value = false; |
| }; |
| |
| class FooBar |
| { |
| public: |
| Foo foo{}; // NOLINT(readability-redundant-member-init) |
| }; |
| |
| inline void from_json(const nlohmann::json& j, FooBar& fb) // NOLINT(misc-use-internal-linkage) |
| { |
| j.at("value").get_to(fb.foo.value); |
| } |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #3171 |
| ///////////////////////////////////////////////////////////////////// |
| |
| struct for_3171_base // NOLINT(cppcoreguidelines-special-member-functions) |
| { |
| for_3171_base(const std::string& /*unused*/ = {}) {} |
| virtual ~for_3171_base() = default; |
| |
| virtual void _from_json(const json& j) |
| { |
| j.at("str").get_to(str); |
| } |
| |
| std::string str{}; // NOLINT(readability-redundant-member-init) |
| }; |
| |
| struct for_3171_derived : public for_3171_base |
| { |
| for_3171_derived() = default; |
| explicit for_3171_derived(const std::string& /*unused*/) { } |
| }; |
| |
| inline void from_json(const json& j, for_3171_base& tb) // NOLINT(misc-use-internal-linkage) |
| { |
| tb._from_json(j); |
| } |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #3312 |
| ///////////////////////////////////////////////////////////////////// |
| |
| #ifdef JSON_HAS_CPP_20 |
| struct for_3312 |
| { |
| std::string name; |
| }; |
| |
| inline void from_json(const json& j, for_3312& obj) // NOLINT(misc-use-internal-linkage) |
| { |
| j.at("name").get_to(obj.name); |
| } |
| #endif |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #3204 |
| ///////////////////////////////////////////////////////////////////// |
| |
| struct for_3204_foo |
| { |
| for_3204_foo() = default; |
| explicit for_3204_foo(std::string /*unused*/) {} // NOLINT(performance-unnecessary-value-param) |
| }; |
| |
| struct for_3204_bar |
| { |
| enum constructed_from_t |
| { |
| constructed_from_none = 0, |
| constructed_from_foo = 1, |
| constructed_from_json = 2 |
| }; |
| |
| explicit for_3204_bar(std::function<void(for_3204_foo)> /*unused*/) noexcept // NOLINT(performance-unnecessary-value-param) |
| : constructed_from(constructed_from_foo) {} |
| explicit for_3204_bar(std::function<void(json)> /*unused*/) noexcept // NOLINT(performance-unnecessary-value-param) |
| : constructed_from(constructed_from_json) {} |
| |
| constructed_from_t constructed_from = constructed_from_none; |
| }; |
| |
| ///////////////////////////////////////////////////////////////////// |
| // for #3333 |
| ///////////////////////////////////////////////////////////////////// |
| |
| struct for_3333 final |
| { |
| for_3333(int x_ = 0, int y_ = 0) : x(x_), y(y_) {} |
| |
| template <class T> |
| for_3333(const T& /*unused*/) |
| { |
| CHECK(false); |
| } |
| |
| int x = 0; |
| int y = 0; |
| }; |
| |
| template <> |
| inline for_3333::for_3333(const json& j) |
| : for_3333(j.value("x", 0), j.value("y", 0)) |
| {} |
| |
| TEST_CASE("regression tests 2") |
| { |
| SECTION("issue #1001 - Fix memory leak during parser callback") |
| { |
| const auto* geojsonExample = R"( |
| { "type": "FeatureCollection", |
| "features": [ |
| { "type": "Feature", |
| "geometry": {"type": "Point", "coordinates": [102.0, 0.5]}, |
| "properties": {"prop0": "value0"} |
| }, |
| { "type": "Feature", |
| "geometry": { |
| "type": "LineString", |
| "coordinates": [ |
| [102.0, 0.0], [103.0, 1.0], [104.0, 0.0], [105.0, 1.0] |
| ] |
| }, |
| "properties": { |
| "prop0": "value0", |
| "prop1": 0.0 |
| } |
| }, |
| { "type": "Feature", |
| "geometry": { |
| "type": "Polygon", |
| "coordinates": [ |
| [ [100.0, 0.0], [101.0, 0.0], [101.0, 1.0], |
| [100.0, 1.0], [100.0, 0.0] ] |
| ] |
| }, |
| "properties": { |
| "prop0": "value0", |
| "prop1": {"this": "that"} |
| } |
| } |
| ] |
| })"; |
| |
| const json::parser_callback_t cb = [&](int /*level*/, json::parse_event_t event, json & parsed) noexcept |
| { |
| // skip uninteresting events |
| if (event == json::parse_event_t::value && !parsed.is_primitive()) |
| { |
| return false; |
| } |
| |
| switch (event) |
| { |
| case json::parse_event_t::key: |
| { |
| return true; |
| } |
| case json::parse_event_t::value: |
| { |
| return false; |
| } |
| case json::parse_event_t::object_start: |
| { |
| return true; |
| } |
| case json::parse_event_t::object_end: |
| { |
| return false; |
| } |
| case json::parse_event_t::array_start: |
| { |
| return true; |
| } |
| case json::parse_event_t::array_end: |
| { |
| return false; |
| } |
| |
| default: |
| { |
| return true; |
| } |
| } |
| }; |
| |
| auto j = json::parse(geojsonExample, cb, true); |
| CHECK(j == json()); |
| } |
| |
| SECTION("issue #1021 - to/from_msgpack only works with standard typization") |
| { |
| float_json j = 1000.0; |
| CHECK(float_json::from_cbor(float_json::to_cbor(j)) == j); |
| CHECK(float_json::from_msgpack(float_json::to_msgpack(j)) == j); |
| CHECK(float_json::from_ubjson(float_json::to_ubjson(j)) == j); |
| |
| float_json j2 = {1000.0, 2000.0, 3000.0}; |
| CHECK(float_json::from_ubjson(float_json::to_ubjson(j2, true, true)) == j2); |
| } |
| |
| SECTION("issue #1045 - Using STL algorithms with JSON containers with expected results?") |
| { |
| json diffs = nlohmann::json::array(); |
| json m1{{"key1", 42}}; |
| json m2{{"key2", 42}}; |
| auto p1 = m1.items(); |
| auto p2 = m2.items(); |
| |
| using it_type = decltype(p1.begin()); |
| |
| std::set_difference( |
| p1.begin(), |
| p1.end(), |
| p2.begin(), |
| p2.end(), |
| std::inserter(diffs, diffs.end()), |
| [&](const it_type & e1, const it_type & e2) -> bool |
| { |
| using comper_pair = std::pair<std::string, decltype(e1.value())>; // Trying to avoid unneeded copy |
| return comper_pair(e1.key(), e1.value()) < comper_pair(e2.key(), e2.value()); // Using pair comper |
| }); |
| |
| CHECK(diffs.size() == 1); // Note the change here, was 2 |
| } |
| |
| #ifdef JSON_HAS_CPP_17 |
| SECTION("issue #1292 - Serializing std::variant causes stack overflow") |
| { |
| static_assert(!std::is_constructible<json, std::variant<int, float>>::value, "unexpected value"); |
| } |
| #endif |
| |
| SECTION("issue #1299 - compile error in from_json converting to container " |
| "with std::pair") |
| { |
| const json j = |
| { |
| {"1", {{"a", "testa_1"}, {"b", "testb_1"}}}, |
| {"2", {{"a", "testa_2"}, {"b", "testb_2"}}}, |
| {"3", {{"a", "testa_3"}, {"b", "testb_3"}}}, |
| }; |
| |
| std::map<std::string, Data> expected |
| { |
| {"1", {"testa_1", "testb_1"}}, |
| {"2", {"testa_2", "testb_2"}}, |
| {"3", {"testa_3", "testb_3"}}, |
| }; |
| const auto data = j.get<decltype(expected)>(); |
| CHECK(expected == data); |
| } |
| |
| SECTION("issue #1445 - buffer overflow in dumping invalid utf-8 strings") |
| { |
| SECTION("a bunch of -1, ensure_ascii=true") |
| { |
| const auto length = 300; |
| |
| json dump_test; |
| dump_test["1"] = std::string(length, -1); |
| |
| std::string expected = R"({"1":")"; |
| for (int i = 0; i < length; ++i) |
| { |
| expected += "\\ufffd"; |
| } |
| expected += "\"}"; |
| |
| auto s = dump_test.dump(-1, ' ', true, nlohmann::json::error_handler_t::replace); |
| CHECK(s == expected); |
| } |
| SECTION("a bunch of -2, ensure_ascii=false") |
| { |
| const auto length = 500; |
| |
| json dump_test; |
| dump_test["1"] = std::string(length, -2); |
| |
| std::string expected = R"({"1":")"; |
| for (int i = 0; i < length; ++i) |
| { |
| expected += "\xEF\xBF\xBD"; |
| } |
| expected += "\"}"; |
| |
| auto s = dump_test.dump(-1, ' ', false, nlohmann::json::error_handler_t::replace); |
| CHECK(s == expected); |
| } |
| SECTION("test case in issue #1445") |
| { |
| nlohmann::json dump_test; |
| const std::array<int, 108> data = |
| { |
| {109, 108, 103, 125, -122, -53, 115, 18, 3, 0, 102, 19, 1, 15, -110, 13, -3, -1, -81, 32, 2, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -80, 2, 0, 0, 96, -118, 46, -116, 46, 109, -84, -87, 108, 14, 109, -24, -83, 13, -18, -51, -83, -52, -115, 14, 6, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 3, 0, 0, 0, 35, -74, -73, 55, 57, -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33, 0, 0, 0, -96, -54, -28, -26} |
| }; |
| std::string s; |
| for (const int i : data) |
| { |
| s += static_cast<char>(i); |
| } |
| dump_test["1"] = s; |
| dump_test.dump(-1, ' ', true, nlohmann::json::error_handler_t::replace); |
| } |
| } |
| |
| SECTION("issue #1447 - Integer Overflow (OSS-Fuzz 12506)") |
| { |
| const json j = json::parse("[-9223372036854775808]"); |
| CHECK(j.dump() == "[-9223372036854775808]"); |
| } |
| |
| SECTION("issue #1708 - minimum value of int64_t can be outputted") |
| { |
| constexpr auto smallest = (std::numeric_limits<int64_t>::min)(); |
| const json j = smallest; |
| CHECK(j.dump() == std::to_string(smallest)); |
| } |
| |
| SECTION("issue #1727 - Contains with non-const lvalue json_pointer picks the wrong overload") |
| { |
| const json j = {{"root", {{"settings", {{"logging", true}}}}}}; |
| |
| auto jptr1 = "/root/settings/logging"_json_pointer; |
| auto jptr2 = json::json_pointer{"/root/settings/logging"}; |
| |
| CHECK(j.contains(jptr1)); |
| CHECK(j.contains(jptr2)); |
| } |
| |
| SECTION("issue #1647 - compile error when deserializing enum if both non-default from_json and non-member operator== exists for other type") |
| { |
| // does not compile on ICPC when targeting C++20 |
| #if !(defined(__INTEL_COMPILER) && __cplusplus >= 202000) |
| { |
| const json j; |
| NonDefaultFromJsonStruct x(j); |
| NonDefaultFromJsonStruct y; |
| CHECK(x == y); |
| } |
| #endif |
| |
| auto val = nlohmann::json("one").get<for_1647>(); |
| CHECK(val == for_1647::one); |
| const json j = val; |
| } |
| |
| SECTION("issue #1715 - json::from_cbor does not respect allow_exceptions = false when input is string literal") |
| { |
| SECTION("string literal") |
| { |
| const json cbor = json::from_cbor("B", true, false); |
| CHECK(cbor.is_discarded()); |
| } |
| |
| SECTION("string array") |
| { |
| const std::array<char, 2> input = {{'B', 0x00}}; |
| const json cbor = json::from_cbor(input, true, false); |
| CHECK(cbor.is_discarded()); |
| } |
| |
| SECTION("std::string") |
| { |
| const json cbor = json::from_cbor(std::string("B"), true, false); |
| CHECK(cbor.is_discarded()); |
| } |
| } |
| |
| SECTION("issue #1805 - A pair<T1, T2> is json constructible only if T1 and T2 are json constructible") |
| { |
| static_assert(!std::is_constructible<json, std::pair<std::string, NotSerializableData>>::value, "unexpected result"); |
| static_assert(!std::is_constructible<json, std::pair<NotSerializableData, std::string>>::value, "unexpected result"); |
| static_assert(std::is_constructible<json, std::pair<int, std::string>>::value, "unexpected result"); |
| } |
| SECTION("issue #1825 - A tuple<Args..> is json constructible only if all T in Args are json constructible") |
| { |
| static_assert(!std::is_constructible<json, std::tuple<std::string, NotSerializableData>>::value, "unexpected result"); |
| static_assert(!std::is_constructible<json, std::tuple<NotSerializableData, std::string>>::value, "unexpected result"); |
| static_assert(std::is_constructible<json, std::tuple<int, std::string>>::value, "unexpected result"); |
| } |
| |
| SECTION("issue #1983 - JSON patch diff for op=add formation is not as per standard (RFC 6902)") |
| { |
| const auto source = R"({ "foo": [ "1", "2" ] })"_json; |
| const auto target = R"({"foo": [ "1", "2", "3" ]})"_json; |
| const auto result = json::diff(source, target); |
| CHECK(result.dump() == R"([{"op":"add","path":"/foo/-","value":"3"}])"); |
| } |
| |
| SECTION("issue #2067 - cannot serialize binary data to text JSON") |
| { |
| const std::array<unsigned char, 23> data = {{0x81, 0xA4, 0x64, 0x61, 0x74, 0x61, 0xC4, 0x0F, 0x33, 0x30, 0x30, 0x32, 0x33, 0x34, 0x30, 0x31, 0x30, 0x37, 0x30, 0x35, 0x30, 0x31, 0x30}}; |
| const json j = json::from_msgpack(data.data(), data.size()); |
| CHECK_NOTHROW( |
| j.dump(4, // Indent |
| ' ', // Indent char |
| false, // Ensure ascii |
| json::error_handler_t::strict // Error |
| )); |
| } |
| |
| SECTION("PR #2181 - regression bug with lvalue") |
| { |
| // see https://github.com/nlohmann/json/pull/2181#issuecomment-653326060 |
| const json j{{"x", "test"}}; |
| const std::string defval = "default value"; |
| auto val = j.value("x", defval); // NOLINT(bugprone-unused-local-non-trivial-variable) |
| auto val2 = j.value("y", defval); // NOLINT(bugprone-unused-local-non-trivial-variable) |
| } |
| |
| SECTION("issue #2293 - eof doesn't cause parsing to stop") |
| { |
| const std::vector<uint8_t> data = |
| { |
| 0x7B, |
| 0x6F, |
| 0x62, |
| 0x6A, |
| 0x65, |
| 0x63, |
| 0x74, |
| 0x20, |
| 0x4F, |
| 0x42 |
| }; |
| const json result = json::from_cbor(data, true, false); |
| CHECK(result.is_discarded()); |
| } |
| |
| SECTION("issue #2315 - json.update and vector<pair>does not work with ordered_json") |
| { |
| nlohmann::ordered_json jsonAnimals = {{"animal", "dog"}}; |
| const nlohmann::ordered_json jsonCat = {{"animal", "cat"}}; |
| jsonAnimals.update(jsonCat); |
| CHECK(jsonAnimals["animal"] == "cat"); |
| |
| auto jsonAnimals_parsed = nlohmann::ordered_json::parse(jsonAnimals.dump()); |
| CHECK(jsonAnimals == jsonAnimals_parsed); |
| |
| const std::vector<std::pair<std::string, int64_t>> intData = {std::make_pair("aaaa", 11), |
| std::make_pair("bbb", 222) |
| }; |
| nlohmann::ordered_json jsonObj; |
| for (const auto& data : intData) |
| { |
| jsonObj[data.first] = data.second; |
| } |
| CHECK(jsonObj["aaaa"] == 11); |
| CHECK(jsonObj["bbb"] == 222); |
| } |
| |
| SECTION("issue #2330 - ignore_comment=true fails on multiple consecutive lines starting with comments") |
| { |
| const std::string ss = "//\n//\n{\n}\n"; |
| const json j = json::parse(ss, nullptr, true, true); |
| CHECK(j.dump() == "{}"); |
| } |
| |
| #ifdef JSON_HAS_CPP_20 |
| #ifndef _LIBCPP_VERSION // see https://github.com/nlohmann/json/issues/4490 |
| #if __has_include(<span>) |
| SECTION("issue #2546 - parsing containers of std::byte") |
| { |
| const char DATA[] = R"("Hello, world!")"; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) |
| const auto s = std::as_bytes(std::span(DATA)); |
| const json j = json::parse(s); |
| CHECK(j.dump() == "\"Hello, world!\""); |
| } |
| #endif |
| #endif |
| #endif |
| |
| SECTION("issue #2574 - Deserialization to std::array, std::pair, and std::tuple with non-default constructable types fails") |
| { |
| SECTION("std::array") |
| { |
| { |
| const json j = {7, 4}; |
| auto arr = j.get<std::array<NonDefaultConstructible, 2>>(); |
| CHECK(arr[0].x == 7); |
| CHECK(arr[1].x == 4); |
| } |
| |
| { |
| const json j = 7; |
| CHECK_THROWS_AS((j.get<std::array<NonDefaultConstructible, 1>>()), json::type_error); |
| } |
| } |
| |
| SECTION("std::pair") |
| { |
| { |
| const json j = {3, 8}; |
| auto p = j.get<std::pair<NonDefaultConstructible, NonDefaultConstructible>>(); |
| CHECK(p.first.x == 3); |
| CHECK(p.second.x == 8); |
| } |
| |
| { |
| const json j = {4, 1}; |
| auto p = j.get<std::pair<int, NonDefaultConstructible>>(); |
| CHECK(p.first == 4); |
| CHECK(p.second.x == 1); |
| } |
| |
| { |
| const json j = {6, 7}; |
| auto p = j.get<std::pair<NonDefaultConstructible, int>>(); |
| CHECK(p.first.x == 6); |
| CHECK(p.second == 7); |
| } |
| |
| { |
| const json j = 7; |
| CHECK_THROWS_AS((j.get<std::pair<NonDefaultConstructible, int>>()), json::type_error); |
| } |
| } |
| |
| SECTION("std::tuple") |
| { |
| { |
| const json j = {9}; |
| auto t = j.get<std::tuple<NonDefaultConstructible>>(); |
| CHECK(std::get<0>(t).x == 9); |
| } |
| |
| { |
| const json j = {9, 8, 7}; |
| auto t = j.get<std::tuple<NonDefaultConstructible, int, NonDefaultConstructible>>(); |
| CHECK(std::get<0>(t).x == 9); |
| CHECK(std::get<1>(t) == 8); |
| CHECK(std::get<2>(t).x == 7); |
| } |
| |
| { |
| const json j = 7; |
| CHECK_THROWS_AS((j.get<std::tuple<NonDefaultConstructible>>()), json::type_error); |
| } |
| } |
| } |
| |
| SECTION("issue #2865 - ASAN detects memory leaks") |
| { |
| // the code below is expected to not leak memory |
| { |
| nlohmann::json o; |
| const std::string s = "bar"; |
| |
| nlohmann::to_json(o["foo"], s); |
| |
| nlohmann::json p = o; |
| |
| // call to_json with a non-null JSON value |
| nlohmann::to_json(p["foo"], s); |
| } |
| |
| { |
| nlohmann::json o; |
| const std::string s = "bar"; |
| |
| nlohmann::to_json(o["foo"], s); |
| |
| // call to_json with a non-null JSON value |
| nlohmann::to_json(o["foo"], s); |
| } |
| } |
| |
| SECTION("issue #2824 - encoding of json::exception::what()") |
| { |
| json j; |
| sax_no_exception sax(j); |
| |
| CHECK(!json::sax_parse("xyz", &sax)); |
| CHECK(*sax_no_exception::error_string == "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - invalid literal; last read: 'x'"); |
| delete sax_no_exception::error_string; // NOLINT(cppcoreguidelines-owning-memory) |
| } |
| |
| SECTION("issue #2825 - Properly constrain the basic_json conversion operator") |
| { |
| static_assert(std::is_copy_assignable<nlohmann::ordered_json>::value, "ordered_json must be copy assignable"); |
| } |
| |
| SECTION("issue #2958 - Inserting in unordered json using a pointer retains the leading slash") |
| { |
| const std::string p = "/root"; |
| |
| json test1; |
| test1[json::json_pointer(p)] = json::object(); |
| CHECK(test1.dump() == "{\"root\":{}}"); |
| |
| ordered_json test2; |
| test2[ordered_json::json_pointer(p)] = json::object(); |
| CHECK(test2.dump() == "{\"root\":{}}"); |
| |
| // json::json_pointer and ordered_json::json_pointer are the same type; behave as above |
| ordered_json test3; |
| test3[json::json_pointer(p)] = json::object(); |
| CHECK(std::is_same<json::json_pointer::string_t, ordered_json::json_pointer::string_t>::value); |
| CHECK(test3.dump() == "{\"root\":{}}"); |
| } |
| |
| SECTION("issue #2982 - to_{binary format} does not provide a mechanism for specifying a custom allocator for the returned type") |
| { |
| std::vector<std::uint8_t, my_allocator<std::uint8_t>> my_vector; |
| json j = {1, 2, 3, 4}; |
| json::to_cbor(j, my_vector); |
| json k = json::from_cbor(my_vector); |
| CHECK(j == k); |
| } |
| |
| #if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM |
| // JSON_HAS_CPP_17 (do not remove; see note at top of file) |
| SECTION("issue #3070 - Version 3.10.3 breaks backward-compatibility with 3.10.2 ") |
| { |
| nlohmann::detail::std_fs::path text_path("/tmp/text.txt"); |
| const json j(text_path); |
| |
| const auto j_path = j.get<nlohmann::detail::std_fs::path>(); |
| CHECK(j_path == text_path); |
| |
| #if DOCTEST_CLANG || DOCTEST_GCC >= DOCTEST_COMPILER(8, 4, 0) |
| // only known to work on Clang and GCC >=8.4 |
| CHECK_THROWS_WITH_AS(nlohmann::detail::std_fs::path(json(1)), "[json.exception.type_error.302] type must be string, but is number", json::type_error); |
| #endif |
| } |
| #endif |
| |
| SECTION("issue #3077 - explicit constructor with default does not compile") |
| { |
| json j; |
| j[0]["value"] = true; |
| std::vector<FooBar> foo; |
| j.get_to(foo); |
| } |
| |
| SECTION("issue #3108 - ordered_json doesn't support range based erase") |
| { |
| ordered_json j = {1, 2, 2, 4}; |
| |
| auto last = std::unique(j.begin(), j.end()); |
| j.erase(last, j.end()); |
| |
| CHECK(j.dump() == "[1,2,4]"); |
| |
| j.erase(std::remove_if(j.begin(), j.end(), [](const ordered_json & val) |
| { |
| return val == 2; |
| }), j.end()); |
| |
| CHECK(j.dump() == "[1,4]"); |
| } |
| |
| SECTION("issue #3343 - json and ordered_json are not interchangeable") |
| { |
| json::object_t jobj({ { "product", "one" } }); |
| ordered_json::object_t ojobj({{"product", "one"}}); |
| |
| auto jit = jobj.begin(); |
| auto ojit = ojobj.begin(); |
| |
| CHECK(jit->first == ojit->first); |
| CHECK(jit->second.get<std::string>() == ojit->second.get<std::string>()); |
| } |
| |
| SECTION("issue #3171 - if class is_constructible from std::string wrong from_json overload is being selected, compilation failed") |
| { |
| const json j{{ "str", "value"}}; |
| |
| // failed with: error: no match for ‘operator=’ (operand types are ‘for_3171_derived’ and ‘const nlohmann::basic_json<>::string_t’ |
| // {aka ‘const std::__cxx11::basic_string<char>’}) |
| // s = *j.template get_ptr<const typename BasicJsonType::string_t*>(); |
| auto td = j.get<for_3171_derived>(); |
| |
| CHECK(td.str == "value"); |
| } |
| |
| #ifdef JSON_HAS_CPP_20 |
| SECTION("issue #3312 - Parse to custom class from unordered_json breaks on G++11.2.0 with C++20") |
| { |
| // see test for #3171 |
| const ordered_json j = {{"name", "class"}}; |
| for_3312 obj{}; |
| |
| j.get_to(obj); |
| |
| CHECK(obj.name == "class"); |
| } |
| #endif |
| |
| #if defined(JSON_HAS_CPP_17) && JSON_USE_IMPLICIT_CONVERSIONS |
| SECTION("issue #3428 - Error occurred when converting nlohmann::json to std::any") |
| { |
| const json j; |
| const std::any a1 = j; |
| std::any&& a2 = j; |
| |
| CHECK(a1.type() == typeid(j)); |
| CHECK(a2.type() == typeid(j)); |
| } |
| #endif |
| |
| SECTION("issue #3204 - ambiguous regression") |
| { |
| for_3204_bar bar_from_foo([](for_3204_foo) noexcept {}); // NOLINT(performance-unnecessary-value-param) |
| for_3204_bar bar_from_json([](json) noexcept {}); // NOLINT(performance-unnecessary-value-param) |
| |
| CHECK(bar_from_foo.constructed_from == for_3204_bar::constructed_from_foo); |
| CHECK(bar_from_json.constructed_from == for_3204_bar::constructed_from_json); |
| } |
| |
| SECTION("issue #3333 - Ambiguous conversion from nlohmann::basic_json<> to custom class") |
| { |
| const json j |
| { |
| {"x", 1}, |
| {"y", 2} |
| }; |
| for_3333 p = j; |
| |
| CHECK(p.x == 1); |
| CHECK(p.y == 2); |
| } |
| |
| #if JSON_HAS_RANGES == 1 |
| SECTION("issue 4440") |
| { |
| auto noOpFilter = std::views::filter([](auto&&) noexcept |
| { |
| return true; |
| }); |
| json j = {1, 2, 3}; |
| auto filtered = j | noOpFilter; |
| CHECK(j == *filtered.begin()); |
| } |
| #endif |
| } |
| |
| DOCTEST_CLANG_SUPPRESS_WARNING_POP |
