/*
__ _____ _____ _____
__| | __| | | | JSON for Modern C++ (test suite)
| | |__ | | | | | | version 2.1.1
|_____|_____|_____|_|___| https://github.com/nlohmann/json
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
Copyright (c) 2013-2017 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 "catch.hpp"
#define private public
#include "json.hpp"
using nlohmann::json;
#include <fstream>
TEST_CASE("RFC 3629", "[hide]")
{
/*
RFC 3629 describes in Sect. 4 the syntax of UTF-8 byte sequences as
follows:
A UTF-8 string is a sequence of octets representing a sequence of UCS
characters. An octet sequence is valid UTF-8 only if it matches the
following syntax, which is derived from the rules for encoding UTF-8
and is expressed in the ABNF of [RFC2234].
UTF8-octets = *( UTF8-char )
UTF8-char = UTF8-1 / UTF8-2 / UTF8-3 / UTF8-4
UTF8-1 = %x00-7F
UTF8-2 = %xC2-DF UTF8-tail
UTF8-3 = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
%xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
UTF8-4 = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
%xF4 %x80-8F 2( UTF8-tail )
UTF8-tail = %x80-BF
*/
auto create_string = [](int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
{
std::string result = "\"" + std::string(1, static_cast<char>(byte1));
if (byte2 != -1)
{
result += std::string(1, static_cast<char>(byte2));
}
if (byte3 != -1)
{
result += std::string(1, static_cast<char>(byte3));
}
if (byte4 != -1)
{
result += std::string(1, static_cast<char>(byte4));
}
result += "\"";
return result;
};
SECTION("ill-formed first byte")
{
for (int byte1 = 0x80; byte1 <= 0xC1; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
for (int byte1 = 0xF5; byte1 <= 0xFF; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("UTF8-1 (x00-x7F)")
{
SECTION("well-formed")
{
for (int byte1 = 0x00; byte1 <= 0x7F; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
// unescaped control characters are parse errors in JSON
if (0x00 <= byte1 and byte1 <= 0x1F)
{
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
continue;
}
// a single quote is a parse error in JSON
if (byte1 == 0x22)
{
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
continue;
}
// a single backslash is a parse error in JSON
if (byte1 == 0x5C)
{
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
continue;
}
// all other characters are OK
CHECK_NOTHROW(json::parse(json_string));
}
}
}
SECTION("UTF8-2 (xC2-xDF UTF8-tail)")
{
SECTION("well-formed")
{
for (int byte1 = 0xC2; byte1 <= 0xDF; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_NOTHROW(json::parse(json_string));
}
}
}
SECTION("ill-formed: missing second byte")
{
for (int byte1 = 0xC2; byte1 <= 0xDF; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("ill-formed: wrong second byte")
{
for (int byte1 = 0xC2; byte1 <= 0xDF; ++byte1)
{
for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
{
// skip correct second byte
if (0x80 <= byte2 and byte2 <= 0xBF)
{
continue;
}
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
SECTION("UTF8-3 (xE0 xA0-BF UTF8-tail)")
{
SECTION("well-formed")
{
for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
{
for (int byte2 = 0xA0; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_NOTHROW(json::parse(json_string));
}
}
}
}
SECTION("ill-formed: missing second byte")
{
for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("ill-formed: missing third byte")
{
for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
{
for (int byte2 = 0xA0; byte2 <= 0xBF; ++byte2)
{
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
SECTION("ill-formed: wrong second byte")
{
for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
{
for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
{
// skip correct second byte
if (0xA0 <= byte2 and byte2 <= 0xBF)
{
continue;
}
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
SECTION("ill-formed: wrong third byte")
{
for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
{
for (int byte2 = 0xA0; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
{
// skip correct third byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("UTF8-3 (xE1-xEC UTF8-tail UTF8-tail)")
{
SECTION("well-formed")
{
for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_NOTHROW(json::parse(json_string));
}
}
}
}
SECTION("ill-formed: missing second byte")
{
for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("ill-formed: missing third byte")
{
for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
SECTION("ill-formed: wrong second byte")
{
for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
{
for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
{
// skip correct second byte
if (0x80 <= byte2 and byte2 <= 0xBF)
{
continue;
}
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
SECTION("ill-formed: wrong third byte")
{
for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
{
// skip correct third byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("UTF8-3 (xED x80-9F UTF8-tail)")
{
SECTION("well-formed")
{
for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0x9F; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_NOTHROW(json::parse(json_string));
}
}
}
}
SECTION("ill-formed: missing second byte")
{
for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("ill-formed: missing third byte")
{
for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0x9F; ++byte2)
{
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
SECTION("ill-formed: wrong second byte")
{
for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
{
for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
{
// skip correct second byte
if (0x80 <= byte2 and byte2 <= 0x9F)
{
continue;
}
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
SECTION("ill-formed: wrong third byte")
{
for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0x9F; ++byte2)
{
for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
{
// skip correct third byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("UTF8-3 (xEE-xEF UTF8-tail UTF8-tail)")
{
SECTION("well-formed")
{
for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_NOTHROW(json::parse(json_string));
}
}
}
}
SECTION("ill-formed: missing second byte")
{
for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("ill-formed: missing third byte")
{
for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
SECTION("ill-formed: wrong second byte")
{
for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
{
for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
{
// skip correct second byte
if (0x80 <= byte2 and byte2 <= 0xBF)
{
continue;
}
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
SECTION("ill-formed: wrong third byte")
{
for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
{
// skip correct third byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("UTF8-4 (xF0 x90-BF UTF8-tail UTF8-tail)")
{
SECTION("well-formed")
{
for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
{
for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_NOTHROW(json::parse(json_string));
}
}
}
}
}
SECTION("ill-formed: missing second byte")
{
for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("ill-formed: missing third byte")
{
for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
{
for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
{
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
SECTION("ill-formed: missing fourth byte")
{
for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
{
for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
SECTION("ill-formed: wrong second byte")
{
for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
{
for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
{
// skip correct second byte
if (0x90 <= byte2 and byte2 <= 0xBF)
{
continue;
}
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("ill-formed: wrong third byte")
{
for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
{
for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
{
// skip correct third byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("ill-formed: wrong fourth byte")
{
for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
{
for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
{
for (int byte4 = 0x00; byte4 <= 0xFF; ++byte4)
{
// skip correct second byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
}
}
SECTION("UTF8-4 (xF1-F3 UTF8-tail UTF8-tail UTF8-tail)")
{
SECTION("well-formed")
{
for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_NOTHROW(json::parse(json_string));
}
}
}
}
}
SECTION("ill-formed: missing second byte")
{
for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("ill-formed: missing third byte")
{
for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
SECTION("ill-formed: missing fourth byte")
{
for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
SECTION("ill-formed: wrong second byte")
{
for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
{
for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
{
// skip correct second byte
if (0x80 <= byte2 and byte2 <= 0xBF)
{
continue;
}
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("ill-formed: wrong third byte")
{
for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
{
// skip correct third byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("ill-formed: wrong fourth byte")
{
for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
for (int byte4 = 0x00; byte4 <= 0xFF; ++byte4)
{
// skip correct second byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
}
SECTION("UTF8-4 (xF4 x80-8F UTF8-tail UTF8-tail)")
{
SECTION("well-formed")
{
for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_NOTHROW(json::parse(json_string));
}
}
}
}
}
SECTION("ill-formed: missing second byte")
{
for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
{
const auto json_string = create_string(byte1);
CAPTURE(byte1);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
SECTION("ill-formed: missing third byte")
{
for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
{
const auto json_string = create_string(byte1, byte2);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
SECTION("ill-formed: missing fourth byte")
{
for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
const auto json_string = create_string(byte1, byte2, byte3);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
SECTION("ill-formed: wrong second byte")
{
for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
{
for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
{
// skip correct second byte
if (0x80 <= byte2 and byte2 <= 0x8F)
{
continue;
}
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("ill-formed: wrong third byte")
{
for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
{
for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
{
// skip correct third byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
{
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
SECTION("ill-formed: wrong fourth byte")
{
for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
{
for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
{
for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
{
for (int byte4 = 0x00; byte4 <= 0xFF; ++byte4)
{
// skip correct second byte
if (0x80 <= byte3 and byte3 <= 0xBF)
{
continue;
}
const auto json_string = create_string(byte1, byte2, byte3, byte4);
CAPTURE(byte1);
CAPTURE(byte2);
CAPTURE(byte3);
CAPTURE(byte4);
CAPTURE(json_string);
CHECK_THROWS_AS(json::parse(json_string), json::parse_error);
}
}
}
}
}
}
}
TEST_CASE("Unicode", "[hide]")
{
/* NOTE: to_unicode is not used any more
SECTION("full enumeration of Unicode code points")
{
// lexer to call to_unicode on
json::lexer dummy_lexer("", 0);
// create an escaped string from a code point
const auto codepoint_to_unicode = [](std::size_t cp)
{
// copd points are represented as a six-character sequence: a
// reverse solidus, followed by the lowercase letter u, followed
// by four hexadecimal digits that encode the character's code
// point
std::stringstream ss;
ss << "\\u" << std::setw(4) << std::setfill('0') << std::hex << cp;
return ss.str();
};
// generate all UTF-8 code points; in total, 1112064 code points are
// generated: 0x1FFFFF code points - 2048 invalid values between
// 0xD800 and 0xDFFF.
for (std::size_t cp = 0; cp <= 0x10FFFFu; ++cp)
{
// The Unicode standard permanently reserves these code point
// values for UTF-16 encoding of the high and low surrogates, and
// they will never be assigned a character, so there should be no
// reason to encode them. The official Unicode standard says that
// no UTF forms, including UTF-16, can encode these code points.
if (cp >= 0xD800u and cp <= 0xDFFFu)
{
// if we would not skip these code points, we would get a
// "missing low surrogate" exception
continue;
}
// string to store the code point as in \uxxxx format
std::string escaped_string;
// string to store the code point as unescaped character sequence
std::string unescaped_string;
if (cp < 0x10000u)
{
// code points in the Basic Multilingual Plane can be
// represented with one \\uxxxx sequence
escaped_string = codepoint_to_unicode(cp);
// All Unicode characters may be placed within the quotation
// marks, except for the characters that must be escaped:
// quotation mark, reverse solidus, and the control characters
// (U+0000 through U+001F); we ignore these code points as
// they are checked with codepoint_to_unicode.
if (cp > 0x1f and cp != 0x22 and cp != 0x5c)
{
unescaped_string = dummy_lexer.to_unicode(cp);
}
}
else
{
// To escape an extended character that is not in the Basic
// Multilingual Plane, the character is represented as a
// 12-character sequence, encoding the UTF-16 surrogate pair
const auto codepoint1 = 0xd800u + (((cp - 0x10000u) >> 10) & 0x3ffu);
const auto codepoint2 = 0xdc00u + ((cp - 0x10000u) & 0x3ffu);
escaped_string = codepoint_to_unicode(codepoint1);
escaped_string += codepoint_to_unicode(codepoint2);
unescaped_string += dummy_lexer.to_unicode(codepoint1, codepoint2);
}
// all other code points are valid and must not yield parse errors
CAPTURE(cp);
CAPTURE(escaped_string);
CAPTURE(unescaped_string);
json j1, j2, j3, j4;
CHECK_NOTHROW(j1 = json::parse("\"" + escaped_string + "\""));
CHECK_NOTHROW(j2 = json::parse(j1.dump()));
CHECK(j1 == j2);
CHECK_NOTHROW(j3 = json::parse("\"" + unescaped_string + "\""));
CHECK_NOTHROW(j4 = json::parse(j3.dump()));
CHECK(j3 == j4);
}
}
*/
SECTION("read all unicode characters")
{
// read a file with all unicode characters stored as single-character
// strings in a JSON array
std::ifstream f("test/data/json_nlohmann_tests/all_unicode.json");
json j;
CHECK_NOTHROW(f >> j);
// the array has 1112064 + 1 elemnts (a terminating "null" value)
// Note: 1112064 = 0x1FFFFF code points - 2048 invalid values between
// 0xD800 and 0xDFFF.
CHECK(j.size() == 1112065);
SECTION("check JSON Pointers")
{
for (auto s : j)
{
// skip non-string JSON values
if (not s.is_string())
{
continue;
}
std::string ptr = s;
// tilde must be followed by 0 or 1
if (ptr == "~")
{
ptr += "0";
}
// JSON Pointers must begin with "/"
ptr = "/" + ptr;
CHECK_NOTHROW(json::json_pointer("/" + ptr));
// check escape/unescape roundtrip
auto escaped = json::json_pointer::escape(ptr);
json::json_pointer::unescape(escaped);
CHECK(escaped == ptr);
}
}
}
SECTION("ignore byte-order-mark")
{
// read a file with a UTF-8 BOM
std::ifstream f("test/data/json_nlohmann_tests/bom.json");
json j;
CHECK_NOTHROW(f >> j);
}
SECTION("error for incomplete/wrong BOM")
{
CHECK_THROWS_AS(json::parse("\xef\xbb"), json::parse_error);
CHECK_THROWS_AS(json::parse("\xef\xbb\xbb"), json::parse_error);
}
}