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nlohmannjson/test/src/unit-cbor.cpp

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:white_check_mark: tests for CBOR
2016-11-26 23:09:24 +00:00
/*
__ _____ _____ _____
__| | __| | | | JSON for Modern C++ (test suite)
| | |__ | | | | | | version 2.0.7
|_____|_____|_____|_|___| https://github.com/nlohmann/json
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
Copyright (c) 2013-2016 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"
#include "json.hpp"
using nlohmann::json;
#include <fstream>
TEST_CASE("CBOR")
{
SECTION("individual values")
{
SECTION("null")
{
json j = nullptr;
std::vector<uint8_t> expected = {0xf6};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
SECTION("boolean")
{
SECTION("true")
{
json j = true;
std::vector<uint8_t> expected = {0xf5};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
SECTION("false")
{
json j = false;
std::vector<uint8_t> expected = {0xf4};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
SECTION("number")
{
SECTION("signed")
{
SECTION("-24..-1")
{
for (auto i = -24; i <= -1; ++i)
{
CAPTURE(i);
// create JSON value with integer number
json j = i;
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(0x20 - 1 - static_cast<uint8_t>(i));
// compare result + size
const auto result = json::to_cbor(j);
CHECK(result == expected);
CHECK(result.size() == 1);
// check individual bytes
CHECK(static_cast<int8_t>(0x20 - 1 - result[0]) == i);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
/*
SECTION("0..127 (positive fixnum)")
{
for (size_t i = 0; i <= 255; ++i)
{
CAPTURE(i);
// create JSON value with integer number
json j = -1;
j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(static_cast<uint8_t>(i));
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 1);
// check individual bytes
CHECK(result[0] == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
}
}
*/
SECTION("-256..-24")
{
for (auto i = -256; i < -24; ++i)
{
CAPTURE(i);
// create JSON value with integer number
json j = i;
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(0x38);
expected.push_back(static_cast<uint8_t>(-1 - i));
// compare result + size
const auto result = json::to_cbor(j);
CHECK(result == expected);
CHECK(result.size() == 2);
// check individual bytes
CHECK(result[0] == 0x38);
CHECK(static_cast<int16_t>(-1 - result[1]) == i);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
SECTION("-9263 (int 16)")
{
json j = -9263;
std::vector<uint8_t> expected = {0x39, 0x24, 0x2e};
const auto result = json::to_cbor(j);
CHECK(result == expected);
int16_t restored = -1 - ((result[1] << 8) + result[2]);
CHECK(restored == -9263);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
/*
SECTION("-32768..-129 (int 16)")
{
for (int16_t i = -32768; i <= -129; ++i)
{
CAPTURE(i);
// create JSON value with integer number
json j = i;
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(0xd1);
expected.push_back(static_cast<uint8_t>((i >> 8) & 0xff));
expected.push_back(static_cast<uint8_t>(i & 0xff));
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 3);
// check individual bytes
CHECK(result[0] == 0xd1);
int16_t restored = (result[1] << 8) + result[2];
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
}
}
*/
}
SECTION("unsigned")
{
SECTION("0..127 (positive fixnum)")
{
for (size_t i = 0; i <= 127; ++i)
{
CAPTURE(i);
// create JSON value with unsigned integer number
json j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(static_cast<uint8_t>(i));
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 1);
// check individual bytes
CHECK(result[0] == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
}
}
SECTION("128..255 (uint 8)")
{
for (size_t i = 128; i <= 255; ++i)
{
CAPTURE(i);
// create JSON value with unsigned integer number
json j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(0xcc);
expected.push_back(static_cast<uint8_t>(i));
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 2);
// check individual bytes
CHECK(result[0] == 0xcc);
uint8_t restored = static_cast<uint8_t>(result[1]);
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
}
}
SECTION("256..65535 (uint 16)")
{
for (size_t i = 256; i <= 65535; ++i)
{
CAPTURE(i);
// create JSON value with unsigned integer number
json j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(0xcd);
expected.push_back(static_cast<uint8_t>((i >> 8) & 0xff));
expected.push_back(static_cast<uint8_t>(i & 0xff));
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 3);
// check individual bytes
CHECK(result[0] == 0xcd);
uint16_t restored = static_cast<uint8_t>(result[1]) * 256 + static_cast<uint8_t>(result[2]);
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
}
}
SECTION("65536..4294967295 (uint 32)")
{
for (uint32_t i :
{
65536u, 77777u, 1048576u
})
{
CAPTURE(i);
// create JSON value with unsigned integer number
json j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(0xce);
expected.push_back(static_cast<uint8_t>((i >> 24) & 0xff));
expected.push_back(static_cast<uint8_t>((i >> 16) & 0xff));
expected.push_back(static_cast<uint8_t>((i >> 8) & 0xff));
expected.push_back(static_cast<uint8_t>(i & 0xff));
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 5);
// check individual bytes
CHECK(result[0] == 0xce);
uint32_t restored = static_cast<uint32_t>((static_cast<uint32_t>(result[1]) << 030) +
(static_cast<uint32_t>(result[2]) << 020) +
(static_cast<uint32_t>(result[3]) << 010) +
static_cast<uint32_t>(result[4]));
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
}
}
}
SECTION("float")
{
SECTION("3.1415925")
{
double v = 3.1415925;
json j = v;
std::vector<uint8_t> expected =
{
0xfb, 0x40, 0x09, 0x21, 0xfb, 0x3f, 0xa6, 0xde, 0xfc
};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// restore value (reverse array for endianess)
double restored;
std::reverse(expected.begin(), expected.end());
memcpy(&restored, expected.data(), sizeof(double));
CHECK(restored == v);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
}
SECTION("string")
{
SECTION("N = 0..23")
{
for (size_t N = 0; N <= 0x17; ++N)
{
CAPTURE(N);
// create JSON value with string containing of N * 'x'
const auto s = std::string(N, 'x');
json j = s;
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(static_cast<uint8_t>(0x60 + N));
for (size_t i = 0; i < N; ++i)
{
expected.push_back('x');
}
// compare result + size
const auto result = json::to_cbor(j);
CHECK(result == expected);
CHECK(result.size() == N + 1);
// check that no null byte is appended
if (N > 0)
{
CHECK(result.back() != '\x00');
}
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
SECTION("N = 24..255")
{
for (size_t N = 24; N <= 255; ++N)
{
CAPTURE(N);
// create JSON value with string containing of N * 'x'
const auto s = std::string(N, 'x');
json j = s;
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(0x78);
expected.push_back(static_cast<uint8_t>(N));
for (size_t i = 0; i < N; ++i)
{
expected.push_back('x');
}
// compare result + size
const auto result = json::to_cbor(j);
CHECK(result == expected);
CHECK(result.size() == N + 2);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
SECTION("N = 256..65535")
{
for (size_t N :
{
256u, 999u, 1025u, 3333u, 2048u, 65535u
})
{
CAPTURE(N);
// create JSON value with string containing of N * 'x'
const auto s = std::string(N, 'x');
json j = s;
// create expected byte vector (hack: create string first)
std::vector<uint8_t> expected(N, 'x');
// reverse order of commands, because we insert at begin()
expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
expected.insert(expected.begin(), 0x79);
// compare result + size
const auto result = json::to_cbor(j);
CHECK(result == expected);
CHECK(result.size() == N + 3);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
SECTION("N = 65536..4294967295")
{
for (size_t N :
{
65536u, 77777u, 1048576u
})
{
CAPTURE(N);
// create JSON value with string containing of N * 'x'
const auto s = std::string(N, 'x');
json j = s;
// create expected byte vector (hack: create string first)
std::vector<uint8_t> expected(N, 'x');
// reverse order of commands, because we insert at begin()
expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
expected.insert(expected.begin(), static_cast<uint8_t>((N >> 16) & 0xff));
expected.insert(expected.begin(), static_cast<uint8_t>((N >> 24) & 0xff));
expected.insert(expected.begin(), 0x7a);
// compare result + size
const auto result = json::to_cbor(j);
CHECK(result == expected);
CHECK(result.size() == N + 5);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
}
SECTION("array")
{
SECTION("empty")
{
json j = json::array();
std::vector<uint8_t> expected = {0x80};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
SECTION("[null]")
{
json j = {nullptr};
std::vector<uint8_t> expected = {0x81, 0xf6};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
SECTION("[1,2,3,4,5]")
{
json j = json::parse("[1,2,3,4,5]");
std::vector<uint8_t> expected = {0x85, 0x01, 0x02, 0x03, 0x04, 0x05};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
SECTION("[[[[]]]]")
{
json j = json::parse("[[[[]]]]");
std::vector<uint8_t> expected = {0x81, 0x81, 0x81, 0x80};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
SECTION("object")
{
SECTION("empty")
{
json j = json::object();
std::vector<uint8_t> expected = {0xa0};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
SECTION("{\"\":null}")
{
json j = {{"", nullptr}};
std::vector<uint8_t> expected = {0xa1, 0x60, 0xf6};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
SECTION("{\"a\": {\"b\": {\"c\": {}}}}")
{
json j = json::parse("{\"a\": {\"b\": {\"c\": {}}}}");
std::vector<uint8_t> expected =
{
0xa1, 0x61, 0x61, 0xa1, 0x61, 0x62, 0xa1, 0x61, 0x63, 0xa0
};
const auto result = json::to_cbor(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_cbor(result) == j);
}
}
}
}
// use this testcase outside [hide] to run it with Valgrind
TEST_CASE("single CBOR roundtrip")
{
SECTION("sample.json")
{
std::string filename = "test/data/json_testsuite/sample.json";
// parse JSON file
std::ifstream f_json(filename);
json j1 = json::parse(f_json);
// parse MessagePack file
std::ifstream f_cbor(filename + ".cbor", std::ios::binary);
std::vector<uint8_t> packed((std::istreambuf_iterator<char>(f_cbor)),
std::istreambuf_iterator<char>());
json j2;
CHECK_NOTHROW(j2 = json::from_cbor(packed));
// compare parsed JSON values
CHECK(j1 == j2);
}
}
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