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json/test/src/unit-serialization.cpp
Niels Lohmann 5f862710fe
🔖 set version to 3.8.0
2020-06-14 17:16:45 +02:00

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/*
__ _____ _____ _____
__| | __| | | | 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 <sstream>
#include <iomanip>
TEST_CASE("serialization")
{
SECTION("operator<<")
{
SECTION("no given width")
{
std::stringstream ss;
json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
ss << j;
CHECK(ss.str() == "[\"foo\",1,2,3,false,{\"one\":1}]");
}
SECTION("given width")
{
std::stringstream ss;
json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
ss << std::setw(4) << j;
CHECK(ss.str() ==
"[\n \"foo\",\n 1,\n 2,\n 3,\n false,\n {\n \"one\": 1\n }\n]");
}
SECTION("given fill")
{
std::stringstream ss;
json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
ss << std::setw(1) << std::setfill('\t') << j;
CHECK(ss.str() ==
"[\n\t\"foo\",\n\t1,\n\t2,\n\t3,\n\tfalse,\n\t{\n\t\t\"one\": 1\n\t}\n]");
}
}
SECTION("operator>>")
{
SECTION("no given width")
{
std::stringstream ss;
json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
j >> ss;
CHECK(ss.str() == "[\"foo\",1,2,3,false,{\"one\":1}]");
}
SECTION("given width")
{
std::stringstream ss;
json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
ss.width(4);
j >> ss;
CHECK(ss.str() ==
"[\n \"foo\",\n 1,\n 2,\n 3,\n false,\n {\n \"one\": 1\n }\n]");
}
SECTION("given fill")
{
std::stringstream ss;
json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
ss.width(1);
ss.fill('\t');
j >> ss;
CHECK(ss.str() ==
"[\n\t\"foo\",\n\t1,\n\t2,\n\t3,\n\tfalse,\n\t{\n\t\t\"one\": 1\n\t}\n]");
}
}
SECTION("dump")
{
SECTION("invalid character")
{
json j = "ä\xA9ü";
CHECK_THROWS_AS(j.dump(), json::type_error&);
CHECK_THROWS_WITH(j.dump(), "[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9");
CHECK_THROWS_AS(j.dump(1, ' ', false, json::error_handler_t::strict), json::type_error&);
CHECK_THROWS_WITH(j.dump(1, ' ', false, json::error_handler_t::strict), "[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9");
CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"äü\"");
CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"ä\xEF\xBF\xBDü\"");
CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"\\u00e4\\ufffd\\u00fc\"");
}
SECTION("ending with incomplete character")
{
json j = "123\xC2";
CHECK_THROWS_AS(j.dump(), json::type_error&);
CHECK_THROWS_WITH(j.dump(), "[json.exception.type_error.316] incomplete UTF-8 string; last byte: 0xC2");
CHECK_THROWS_AS(j.dump(1, ' ', false, json::error_handler_t::strict), json::type_error&);
CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"123\"");
CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"123\xEF\xBF\xBD\"");
CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"123\\ufffd\"");
}
SECTION("unexpected character")
{
json j = "123\xF1\xB0\x34\x35\x36";
CHECK_THROWS_AS(j.dump(), json::type_error&);
CHECK_THROWS_WITH(j.dump(), "[json.exception.type_error.316] invalid UTF-8 byte at index 5: 0x34");
CHECK_THROWS_AS(j.dump(1, ' ', false, json::error_handler_t::strict), json::type_error&);
CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"123456\"");
CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"123\xEF\xBF\xBD\x34\x35\x36\"");
CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"123\\ufffd456\"");
}
SECTION("U+FFFD Substitution of Maximal Subparts")
{
// Some tests (mostly) from
// https://www.unicode.org/versions/Unicode11.0.0/ch03.pdf
// Section 3.9 -- U+FFFD Substitution of Maximal Subparts
auto test = [&](std::string const & input, std::string const & expected)
{
json j = input;
CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"" + expected + "\"");
};
test("\xC2", "\\ufffd");
test("\xC2\x41\x42", "\\ufffd" "\x41" "\x42");
test("\xC2\xF4", "\\ufffd" "\\ufffd");
test("\xF0\x80\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
test("\xF1\x80\x80\x41", "\\ufffd" "\x41");
test("\xF2\x80\x80\x41", "\\ufffd" "\x41");
test("\xF3\x80\x80\x41", "\\ufffd" "\x41");
test("\xF4\x80\x80\x41", "\\ufffd" "\x41");
test("\xF5\x80\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
test("\xF0\x90\x80\x41", "\\ufffd" "\x41");
test("\xF1\x90\x80\x41", "\\ufffd" "\x41");
test("\xF2\x90\x80\x41", "\\ufffd" "\x41");
test("\xF3\x90\x80\x41", "\\ufffd" "\x41");
test("\xF4\x90\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
test("\xF5\x90\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
test("\xC0\xAF\xE0\x80\xBF\xF0\x81\x82\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
test("\xED\xA0\x80\xED\xBF\xBF\xED\xAF\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
test("\xF4\x91\x92\x93\xFF\x41\x80\xBF\x42", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41" "\\ufffd""\\ufffd" "\x42");
test("\xE1\x80\xE2\xF0\x91\x92\xF1\xBF\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
}
}
SECTION("to_string")
{
auto test = [&](std::string const & input, std::string const & expected)
{
using std::to_string;
json j = input;
CHECK(to_string(j) == "\"" + expected + "\"");
};
test("{\"x\":5,\"y\":6}", "{\\\"x\\\":5,\\\"y\\\":6}");
test("{\"x\":[10,null,null,null]}", "{\\\"x\\\":[10,null,null,null]}");
test("test", "test");
test("[3,\"false\",false]", "[3,\\\"false\\\",false]");
}
}
TEST_CASE_TEMPLATE("serialization for extreme integer values", T, int32_t, uint32_t, int64_t, uint64_t)
{
SECTION("minimum")
{
constexpr auto minimum = (std::numeric_limits<T>::min)();
json j = minimum;
CHECK(j.dump() == std::to_string(minimum));
}
SECTION("maximum")
{
constexpr auto maximum = (std::numeric_limits<T>::max)();
json j = maximum;
CHECK(j.dump() == std::to_string(maximum));
}
}
TEST_CASE("dump with binary values")
{
auto binary = json::binary({1, 2, 3, 4});
auto binary_empty = json::binary({});
auto binary_with_subtype = json::binary({1, 2, 3, 4}, 128);
auto binary_empty_with_subtype = json::binary({}, 128);
json object = {{"key", binary}};
json object_empty = {{"key", binary_empty}};
json object_with_subtype = {{"key", binary_with_subtype}};
json object_empty_with_subtype = {{"key", binary_empty_with_subtype}};
json array = {"value", 1, binary};
json array_empty = {"value", 1, binary_empty};
json array_with_subtype = {"value", 1, binary_with_subtype};
json array_empty_with_subtype = {"value", 1, binary_empty_with_subtype};
SECTION("normal")
{
CHECK(binary.dump() == "{\"bytes\":[1,2,3,4],\"subtype\":null}");
CHECK(binary_empty.dump() == "{\"bytes\":[],\"subtype\":null}");
CHECK(binary_with_subtype.dump() == "{\"bytes\":[1,2,3,4],\"subtype\":128}");
CHECK(binary_empty_with_subtype.dump() == "{\"bytes\":[],\"subtype\":128}");
CHECK(object.dump() == "{\"key\":{\"bytes\":[1,2,3,4],\"subtype\":null}}");
CHECK(object_empty.dump() == "{\"key\":{\"bytes\":[],\"subtype\":null}}");
CHECK(object_with_subtype.dump() == "{\"key\":{\"bytes\":[1,2,3,4],\"subtype\":128}}");
CHECK(object_empty_with_subtype.dump() == "{\"key\":{\"bytes\":[],\"subtype\":128}}");
CHECK(array.dump() == "[\"value\",1,{\"bytes\":[1,2,3,4],\"subtype\":null}]");
CHECK(array_empty.dump() == "[\"value\",1,{\"bytes\":[],\"subtype\":null}]");
CHECK(array_with_subtype.dump() == "[\"value\",1,{\"bytes\":[1,2,3,4],\"subtype\":128}]");
CHECK(array_empty_with_subtype.dump() == "[\"value\",1,{\"bytes\":[],\"subtype\":128}]");
}
SECTION("pretty-printed")
{
CHECK(binary.dump(4) == "{\n"
" \"bytes\": [1, 2, 3, 4],\n"
" \"subtype\": null\n"
"}");
CHECK(binary_empty.dump(4) == "{\n"
" \"bytes\": [],\n"
" \"subtype\": null\n"
"}");
CHECK(binary_with_subtype.dump(4) == "{\n"
" \"bytes\": [1, 2, 3, 4],\n"
" \"subtype\": 128\n"
"}");
CHECK(binary_empty_with_subtype.dump(4) == "{\n"
" \"bytes\": [],\n"
" \"subtype\": 128\n"
"}");
CHECK(object.dump(4) == "{\n"
" \"key\": {\n"
" \"bytes\": [1, 2, 3, 4],\n"
" \"subtype\": null\n"
" }\n"
"}");
CHECK(object_empty.dump(4) == "{\n"
" \"key\": {\n"
" \"bytes\": [],\n"
" \"subtype\": null\n"
" }\n"
"}");
CHECK(object_with_subtype.dump(4) == "{\n"
" \"key\": {\n"
" \"bytes\": [1, 2, 3, 4],\n"
" \"subtype\": 128\n"
" }\n"
"}");
CHECK(object_empty_with_subtype.dump(4) == "{\n"
" \"key\": {\n"
" \"bytes\": [],\n"
" \"subtype\": 128\n"
" }\n"
"}");
CHECK(array.dump(4) == "[\n"
" \"value\",\n"
" 1,\n"
" {\n"
" \"bytes\": [1, 2, 3, 4],\n"
" \"subtype\": null\n"
" }\n"
"]");
CHECK(array_empty.dump(4) == "[\n"
" \"value\",\n"
" 1,\n"
" {\n"
" \"bytes\": [],\n"
" \"subtype\": null\n"
" }\n"
"]");
CHECK(array_with_subtype.dump(4) == "[\n"
" \"value\",\n"
" 1,\n"
" {\n"
" \"bytes\": [1, 2, 3, 4],\n"
" \"subtype\": 128\n"
" }\n"
"]");
CHECK(array_empty_with_subtype.dump(4) == "[\n"
" \"value\",\n"
" 1,\n"
" {\n"
" \"bytes\": [],\n"
" \"subtype\": 128\n"
" }\n"
"]");
}
}
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