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Merge pull request #2225 from nlohmann/issue2175
Simplify conversion from/to custom types
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| /* | ||
| __ _____ _____ _____ | ||
| __| | __| | | | JSON for Modern C++ (test suite) | ||
| | | |__ | | | | | | version 3.8.0 | ||
| |_____|_____|_____|_|___| https://github.com/nlohmann/json | ||
| Licensed under the MIT License <http://opensource.org/licenses/MIT>. | ||
| SPDX-License-Identifier: MIT | ||
| Copyright (c) 2013-2019 Niels Lohmann <http://nlohmann.me>. | ||
| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), to deal | ||
| in the Software without restriction, including without limitation the rights | ||
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| copies of the Software, and to permit persons to whom the Software is | ||
| furnished to do so, subject to the following conditions: | ||
| The above copyright notice and this permission notice shall be included in all | ||
| copies or substantial portions of the Software. | ||
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| SOFTWARE. | ||
| */ | ||
|
|
||
| #include "doctest_compatibility.h" | ||
|
|
||
| #include <nlohmann/json.hpp> | ||
| using nlohmann::json; | ||
|
|
||
| #include <utility> | ||
|
|
||
| namespace persons | ||
| { | ||
| class person_with_private_data | ||
| { | ||
| private: | ||
| std::string name; | ||
| int age = 0; | ||
|
|
||
| public: | ||
| bool operator==(const person_with_private_data& rhs) const | ||
| { | ||
| return std::tie(name, age) == std::tie(rhs.name, rhs.age); | ||
| } | ||
|
|
||
| person_with_private_data() = default; | ||
| person_with_private_data(std::string name, int age) | ||
| : name(std::move(name)) | ||
| , age(age) | ||
| {} | ||
|
|
||
| NLOHMANN_DEFINE_TYPE_INTRUSIVE(person_with_private_data, age, name); | ||
| }; | ||
|
|
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| class person_without_private_data_1 | ||
| { | ||
| public: | ||
| std::string name; | ||
| int age = 0; | ||
|
|
||
| bool operator==(const person_without_private_data_1& rhs) const | ||
| { | ||
| return std::tie(name, age) == std::tie(rhs.name, rhs.age); | ||
| } | ||
|
|
||
| person_without_private_data_1() = default; | ||
| person_without_private_data_1(std::string name, int age) | ||
| : name(std::move(name)) | ||
| , age(age) | ||
| {} | ||
|
|
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| NLOHMANN_DEFINE_TYPE_INTRUSIVE(person_without_private_data_1, age, name); | ||
| }; | ||
|
|
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| class person_without_private_data_2 | ||
| { | ||
| public: | ||
| std::string name; | ||
| int age = 0; | ||
|
|
||
| bool operator==(const person_without_private_data_2& rhs) const | ||
| { | ||
| return std::tie(name, age) == std::tie(rhs.name, rhs.age); | ||
| } | ||
|
|
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| person_without_private_data_2() = default; | ||
| person_without_private_data_2(std::string name, int age) | ||
| : name(std::move(name)) | ||
| , age(age) | ||
| {} | ||
| }; | ||
|
|
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| NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(person_without_private_data_2, age, name); | ||
| } // namespace persons | ||
|
|
||
| TEST_CASE_TEMPLATE("Serialization/deserialization via NLOHMANN_DEFINE_TYPE_INTRUSIVE", T, | ||
| persons::person_with_private_data, | ||
| persons::person_without_private_data_1, | ||
| persons::person_without_private_data_2) | ||
| { | ||
| SECTION("person") | ||
| { | ||
| // serialization | ||
| T p1("Erik", 1); | ||
| CHECK(json(p1).dump() == "{\"age\":1,\"name\":\"Erik\"}"); | ||
|
|
||
| // deserialization | ||
| T p2 = json(p1); | ||
| CHECK(p2 == p1); | ||
|
|
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| // roundtrip | ||
| CHECK(T(json(p1)) == p1); | ||
| CHECK(json(T(json(p1))) == json(p1)); | ||
|
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| // check exception in case of missing field | ||
| json j = json(p1); | ||
| j.erase("age"); | ||
| T p3; | ||
| CHECK_THROWS_WITH_AS(p3 = json(j), "[json.exception.out_of_range.403] key 'age' not found", json::out_of_range); | ||
| } | ||
| } |