Files
json/tests/src/unit-msgpack.cpp
Niels Lohmann b54ed188e6 Remove test debt: dead guards, discarded results, and unreferenced files (#5732)
* Run the README test case in JSON_FastTests jobs

The "README" test case was marked doctest::skip() when the tests
moved from Catch to doctest in 2019, where it replaced Catch's hidden
tag. It is not slow (17 assertions, about 0.00 s), but cmake/test.cmake
only passes --no-skip when JSON_FastTests is off, so the per-compiler
ci_test_*_cxxNN matrix, macOS, Windows Release/ARM, icpc, icpx and
nvhpc compiled the README examples without running them.

Drop the skip decorator so every job runs the case. Test-only change.

Part of #5713

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Remove stale clang ranges guards in unit-iterators2.cpp

The "algorithms" and "views" sections were guarded by clang/libstdc++
checks written for a clang 15 (04/2022) bug. The first guard's
condition contradicts its own comment: it skips clang+libc++ and
keeps clang+libstdc++. Both sections already sit inside
`#if JSON_HAS_RANGES`, which macro_scope.hpp excludes for the
toolchains these guards targeted, so the inner guards never let the
sections run on the platforms they meant to protect and are
redundant on the rest. Verified locally with Apple clang 21/libc++
and clang 16.0.6/libstdc++ 12 (Docker): both pass all 1355
assertions with the guards removed.

Part of #5713

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Fix copy-pasted CBOR half-float checks; enable stale encode checks

In the RFC 8949 Appendix A test case, the decode checks for
5.960464477539063e-8 (0xf9 0x00 0x01) and 0.00006103515625
(0xf9 0x04 0x00) were copy-pasted from the neighboring -4.0 example,
so those two half-float byte sequences were never actually decoded
and checked, and -4.0 was checked three times instead. The two
float32 encode checks for 100000.0 and 3.4028234663852886e+38 were
commented out before the writer supported emitting float32 and are
now verified to match byte for byte, so they are enabled. The
remaining commented-out half-precision to_cbor checks are collapsed
into a single explanatory comment, since the writer never emits
half-precision floats.

Part of #5713

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Assert on the result of STL container conversions in tests

The "object-like STL containers" and "array-like STL containers"
sections converted json values into std::map, unordered_map,
multimap, unordered_multimap, list, forward_list, array, valarray,
vector, deque, set and unordered_set and discarded the result, so
these ~60 conversions only proved that the code compiles and does
not throw; a conversion that dropped or reordered elements would
still pass. Bind each result and compare it against the expected
container. Also fix a copy-paste slip in the deque section
(`j2.get<std::deque<double>>()` instead of j3, so j3's doubles were
never converted to a deque), and remove the dead
`// CHECK(m5["one"] == "eins")` comments that referred to a variable
that did not exist by asserting the equivalent through the bound
result.

Part of #5713

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Deduplicate SaxCountdown and other test helpers across formats

SaxCountdown was copied byte-for-byte into six binary-format test
files (unit-cbor.cpp, unit-msgpack.cpp, unit-ubjson.cpp,
unit-bjdata.cpp, unit-bon8.cpp, unit-bson.cpp), about 370 redundant
lines. Move it into tests/src/sax_countdown.hpp (namespace utils,
alongside test_utils.hpp and round_trip_corpus.hpp) and include it
from all six.

trait_test_arg and the "value_in_range_of trait"
TEST_CASE_TEMPLATE_DEFINE were duplicated between unit-32bit.cpp and
unit-bjdata.cpp; the trait is a detail/meta trait, not specific to
either file. Move it into tests/src/value_in_range_of_test.hpp;
unit-32bit.cpp keeps its own include, since JSON_32bitTest=ONLY
builds only that file. Each file keeps its own
TEST_CASE_TEMPLATE_INVOKE list.

sax_no_exception and the "issue #2824" section were duplicated in
unit-regression2.cpp and unit-disabled_exceptions.cpp. Drop the copy
from unit-regression2.cpp; unit-disabled_exceptions.cpp already
covers the no-exceptions case that #2824 was about, and
ci_test_noexceptions reruns it.

No behavior change. Verified by building and running unit-cbor,
unit-msgpack, unit-ubjson, unit-bjdata, unit-bon8, unit-bson,
unit-32bit, unit-regression2 and unit-disabled_exceptions against
include/ (clang++ -std=c++11, ASan/UBSan where applicable); assertion
counts are unchanged from before the refactor.

Part of #5714

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Remove the unreferenced vendored libFuzzer

tests/thirdparty/Fuzzer (155 files, ~776 KB of vendored Apache-2.0
LLVM code from the 2016 OSS-Fuzz import) is not referenced by any
CMakeLists, Makefile or workflow: the fuzz drivers link against
-fsanitize=fuzzer or the repo's own
tests/src/fuzzer-driver_afl.cpp. Its vendored README only points at
llvm.org's own libFuzzer docs. Being dead code, it also adds noise
to the flawfinder code-scanning workflow, which scans the whole
tree. Remove the directory and its .reuse/dep5 entry.

Part of #5714

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Remove unreferenced 2016 benchmark and fuzz reports

tests/reports (1.6 MB) holds AFL status pages and plots from
2016-08-29 and 2016-10-02, and a nativejson-benchmark snapshot from
2016 with links to rawgit.com, which shut down in 2019. Nothing
references this directory: no doc, README section, script or
workflow points at it, and it describes a ten-years-old, pre-2.0
snapshot of the library.

Part of #5714

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Run the CBOR, MessagePack, BSON and BON8 round-trip invariants in CI

tests/src/round_trip_corpus.hpp exists so that the byte-stability
invariant the fuzzer drivers check also runs on a fixed corpus in CI,
instead of only at OSS-Fuzz. So far only the UBJSON and BJData drivers
had a matching unit test; the CBOR, MessagePack, BSON and BON8 drivers
assert the same invariant (assert(to_X(j2) == vec)) but nothing ran it
outside OSS-Fuzz.

Add "<FORMAT> round-trip invariants" test cases to unit-cbor.cpp,
unit-msgpack.cpp, unit-bson.cpp and unit-bon8.cpp, modeled on the
UBJSON case: seed j1 from the corpus (skipping values that do not
survive the format's own round trip, as the fuzzer drivers only ever
see values from_X() actually produced), then require from_X(to_X(j1))
not to throw and check to_X(j2) == to_X(j1). BSON only serializes
objects, so non-object corpus values are skipped. Update the comments
in round_trip_corpus.hpp and tests/fuzzing.md to name all six formats.

The stream-versus-contiguous check in the BON8 driver is left out, as
#5601 reworks it.

A local probe confirms no violations on the current corpus (CBOR 3849
checked, MessagePack 3909, BSON 2958, BON8 3841 - matching the counts
already recorded for this probe in the issue).

Closes #5714 item 1.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Fix fuzzer driver step lists to match the checks the code performs

The header comment of six of the seven binary-format fuzzer drivers
listed an invariant the code does not check: CBOR, MessagePack, BSON
and BON8 said "assert(j1 == j2)", but the code checks byte stability,
assert(to_X(j2) == vec). UBJSON and BJData still described the old
"assert(j1 == j2/j3/j4)" byte-exact check from before PR #5494 replaced
it with a use_size/use_type-aware round trip (UBJSON) and a
value-stability check (BJData); BJData's added paragraph already
explained the new check, but the step list above it did not.

Also remove a dead branch in fuzzer-parse_bson.cpp: from_bson() is
called with allow_exceptions = true, so it throws instead of returning
a discarded value, and the "if (j1.is_discarded()) return 0;" guard
could never trigger. Drop the unused <iostream> include from all seven
drivers and <sstream> from all but fuzzer-parse_bon8.cpp, which is the
only one that uses std::istringstream.

Overlaps #5601, which edits all seven drivers in the same hunks.

Closes #5714 item 4.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Silence the CMP0169 deprecation in cmake_fetch_content, fix stale guards

tests/cmake_fetch_content/project calls the single-argument
FetchContent_Populate(json) after FetchContent_Declare(), which CMake
3.30 deprecated as CMP0169. Since the project declares
cmake_minimum_required(VERSION 3.11...3.14), the policy stays unset,
so every configure with a current CMake prints the deprecation
warning. The test is kept on purpose: it is the only coverage of the
FetchContent_Populate + add_subdirectory pattern for CMake 3.11-3.13
users, which the docs still describe as supported. Explicitly set
CMP0169 to OLD, with a comment explaining why.

Also fix two stale version guards:
- tests/cmake_fetch_content/CMakeLists.txt guarded the test with
  VERSION_GREATER "3.11.0", which is dead now that tests/CMakeLists.txt
  requires CMake 3.13.
- tests/cmake_fetch_content2/CMakeLists.txt guarded with
  VERSION_GREATER "3.14.0", which skips exactly 3.14.0, the first
  version with FetchContent_MakeAvailable. Change it to
  VERSION_GREATER_EQUAL "3.14".

Verified locally: `ctest -R cmake_fetch_content` passes with CMake
4.1, and the CMP0169 deprecation warning that appeared before this
change is gone.

Closes #5714 item 5.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Make the CMake integration-test wrappers consistent

The six tests/cmake_* integration-test wrappers had drifted:

- Only cmake_import and cmake_import_minver forwarded
  -A "${CMAKE_GENERATOR_PLATFORM}" to the inner configure, and none
  forwarded -T "${CMAKE_GENERATOR_TOOLSET}". The Windows workflow
  configures the outer build with -A Win32 -T ClangCL, so without
  forwarding, the inner projects of cmake_add_subdirectory,
  cmake_fetch_content, cmake_fetch_content2 and
  cmake_target_include_directories built with the generator defaults
  instead of matching the outer build's platform and toolset. Forward
  both consistently from all six wrappers.
- cmake_fetch_content and cmake_fetch_content2 passed
  -Dnlohmann_json_source to their inner projects, which never read it
  (CMake warns "manually-specified variables were not used"); the
  inner projects fetch their own copy of the library instead. Drop it.
- tests/CMakeLists.txt set JSON_FORCED_GLOBAL_COMPILE_OPTIONS from the
  matching environment variable but never read the cache variable
  again; the lines right below it read $ENV{JSON_FORCED_GLOBAL_COMPILE_OPTIONS}
  directly, like the LINK_OPTIONS counterpart already does. Remove the
  dead set().

This changes which platform and toolset the Win32 and ClangCL CI jobs
build the four newly-forwarding wrappers' inner projects with, which
may surface new failures there; CI has to confirm those jobs.

Verified locally with Ninja (empty -A ""/-T "" is accepted): all 12
cmake_* tests still pass, and the inner fetch_content configures no
longer warn about the unused variable.

Closes #5714 item 6.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Turn the #972 fifo_map regression test into a real test

The #972 regression test in unit-regression1.cpp only built a
my_json array from a string literal (the original crash) and had no
CHECK, so the fifo_map object type it exists to demonstrate was never
exercised. Meanwhile the docs recommend fifo_map for keeping object
keys in insertion order (object_order.md, template_parameters.md),
and nothing tested that recommendation.

Extend the section: after the original array assignment, parse an
object with my_json::parse() (not via the "..."_json UDL, which
returns a plain nlohmann::json and would exercise the cross-basic_json
conversion constructor instead of the parser's own key insertion -
and, as tried locally, does not keep fifo order for this stateful
comparator) and check that dump() keeps insertion order, and that it
survives erase() and inserting a new key.

Also narrow thirdparty/fifo_map off the include path of every other
test-* target: it was a PUBLIC include directory of test_main, even
though unit-regression1.cpp is its only user. Add a small
fifo_map_include INTERFACE library with that include directory and
attach it to test-regression1 only via json_test_set_test_options().

Verified locally (test-regression1_cpp11, default build and
-fsanitize=address,undefined): the new checks pass; `git grep fifo_map
tests` still only finds unit-regression1.cpp and the vendored header.

Closes #5714 item 7.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Document the vendored doctest.h patch; fix stale doctest_compatibility.h comments

tests/thirdparty/doctest/doctest.h is doctest 2.4.12, imported in
#4771. Two weeks later, #4801 hand-edited translateActiveException()
to declare "String res;" inside the translator loop instead of before
it, so a translator that does not match does not leave a previous
translator's result in "res" for the next iteration to see. Nothing
recorded this, so re-vendoring doctest.h from upstream would silently
drop the fix. Add a comment at the patched site naming the version,
the PR and the reason, so a future re-vendor knows to re-apply it.

Also fix two stale comments in doctest_compatibility.h:
- The DOCTEST_THREAD_LOCAL comment referenced Xcode 6/7, which is no
  longer supported; reword it to explain why the define must stay
  regardless (it keeps doctest's own thread_local usage out of the way
  of the same Clang/MinGW crash that JSON_NO_THREAD_LOCAL works around
  in the library, see ci_test_no_thread_local).
- The <iosfwd> include's comment justified it with tests that define
  "private" as "public"; no test under tests/src does that any more
  (removed by #2352). Reword the comment instead of dropping the
  include, since confirming it is safe to drop needs the full CI
  matrix including MSVC 2015+.

Verified locally that tests/src/unit-readme.cpp still builds and
passes 17/17 with these headers.

Closes #5714 item 9.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Stop compiling unit-wstring.cpp out entirely on classic ICC

tests/src/unit-wstring.cpp wrapped the whole file in
#ifndef __INTEL_COMPILER, with the comment "ICPC errors out on
multibyte character sequences in source files". The ci_icpc job
(intel/oneapi-hpckit:2023.2.1) still exists, so that job ran none of
the wstring/u16string/u32string input adapter tests, including the
malformed-input checks #5704 (open) extends.

Only 9 lines contained non-ASCII bytes: the three *_is_utf16()/
*_is_utf32() probe functions, and three std::wstring/u16string/
u32string literals plus their narrow-string dump() expectations.
Rewrite all of them with \u/\U escapes in the wide/u16/u32 literals
and \x escapes (split into separate string-literal tokens so a
following byte is never read as part of the same hex escape, e.g.
"\xE1\x83\x85" "a") in the narrow ones. Remove the
#ifndef __INTEL_COMPILER/#endif guard along with it.

The *_is_utf16()/*_is_utf32() probes compared a raw multibyte literal
against an escape-based one to detect a compiler that misreads the
source file's encoding; with no raw literals left to misread, the
comparison is now tautological, so drop the probes and the "if"
guards around each SECTION's body instead of leaving them in as dead
checks.

The same non-ASCII-in-source-and-in-a-narrow-comparison pattern
existed once more in unit-deserialization.cpp's "Using _json with
char8_t literals #4945" test: a raw emoji character in a u8R"(...)"
literal, guarded by a check_utf8() that returned false for ICC (same
reason) and for Windows without the active UTF-8 code page. Rewrite
the literal with a \U escape and compare it against a \x-escaped
expectation instead of a second raw literal, and drop check_utf8()
and the now-unused <windows.h> include along with the guard.

Verified locally (clang, -std=c++11 and -std=c++20,
-fsanitize=address,undefined, and a plain build): test-wstring keeps
18/18 assertions and unit-deserialization keeps 466/466 (c++11) and
477/477 (c++20) assertions, matching this branch before the change
exactly - no coverage was gained or lost, only the source-encoding
dependency was removed. ci_icpc has to confirm classic ICC actually
builds and passes test-wstring now; if it does not, that is a real
finding, not a reason to restore the guard.

Overlaps #5704 (open), which edits unit-wstring.cpp inside the
previously-guarded region (an include near the top, checks in the
invalid-string sections, and a new section at the end).

Closes #5713 item 5.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-01 07:33:07 +02:00

2493 lines
114 KiB
C++

// __ _____ _____ _____
// __| | __| | | | JSON for Modern C++ (supporting code)
// | | |__ | | | | | | version 3.12.0
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
//
// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
// SPDX-License-Identifier: MIT
#include "doctest_compatibility.h"
#include <nlohmann/json.hpp>
using nlohmann::json;
#ifdef JSON_TEST_NO_GLOBAL_UDLS
using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
#endif
#include <cstdint> // SIZE_MAX, UINT32_MAX
#include <fstream>
#include <sstream>
#include <iomanip>
#include <limits>
#include <set>
#include "make_test_data_available.hpp"
#include "round_trip_corpus.hpp"
#include "test_utils.hpp"
#include "sax_countdown.hpp"
using utils::SaxCountdown;
TEST_CASE("MessagePack")
{
SECTION("individual values")
{
SECTION("discarded")
{
// discarded values are not serialized
json const j = json::value_t::discarded;
const auto result = json::to_msgpack(j);
CHECK(result.empty());
}
SECTION("null")
{
json const j = nullptr;
std::vector<uint8_t> const expected = {0xc0};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("boolean")
{
SECTION("true")
{
json const j = true;
std::vector<uint8_t> const expected = {0xc3};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("false")
{
json const j = false;
std::vector<uint8_t> const expected = {0xc2};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("number")
{
SECTION("signed")
{
SECTION("-32..-1 (negative fixnum)")
{
for (auto i = -32; i <= -1; ++i)
{
CAPTURE(i)
// create JSON value with integer number
json const j = i;
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> const expected
{
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(static_cast<int8_t>(result[0]) == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("0..127 (positive fixnum)")
{
for (size_t i = 0; i <= 127; ++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> const expected{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);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("128..255 (int 8)")
{
for (size_t i = 128; 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> const expected
{
0xcc,
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);
auto const restored = static_cast<uint8_t>(result[1]);
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("256..65535 (int 16)")
{
for (size_t i = 256; i <= 65535; i = utils::next_integer_sample(i, static_cast<size_t>(65535), static_cast<size_t>(7)))
{
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> const expected
{
0xcd,
static_cast<uint8_t>((i >> 8) & 0xff),
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);
auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("65536..4294967295 (int 32)")
{
for (uint32_t i :
{
65536u, 77777u, 1048576u, 4294967295u
})
{
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> const expected
{
0xce,
static_cast<uint8_t>((i >> 24) & 0xff),
static_cast<uint8_t>((i >> 16) & 0xff),
static_cast<uint8_t>((i >> 8) & 0xff),
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 const restored = (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);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("4294967296..9223372036854775807 (int 64)")
{
for (uint64_t i :
{
4294967296LU, 9223372036854775807LU
})
{
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> const expected
{
0xcf,
static_cast<uint8_t>((i >> 070) & 0xff),
static_cast<uint8_t>((i >> 060) & 0xff),
static_cast<uint8_t>((i >> 050) & 0xff),
static_cast<uint8_t>((i >> 040) & 0xff),
static_cast<uint8_t>((i >> 030) & 0xff),
static_cast<uint8_t>((i >> 020) & 0xff),
static_cast<uint8_t>((i >> 010) & 0xff),
static_cast<uint8_t>(i & 0xff),
};
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 9);
// check individual bytes
CHECK(result[0] == 0xcf);
uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) +
(static_cast<uint64_t>(result[2]) << 060) +
(static_cast<uint64_t>(result[3]) << 050) +
(static_cast<uint64_t>(result[4]) << 040) +
(static_cast<uint64_t>(result[5]) << 030) +
(static_cast<uint64_t>(result[6]) << 020) +
(static_cast<uint64_t>(result[7]) << 010) +
static_cast<uint64_t>(result[8]);
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("-128..-33 (int 8)")
{
for (auto i = -128; i <= -33; ++i)
{
CAPTURE(i)
// create JSON value with integer number
json const j = i;
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> const expected
{
0xd0,
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] == 0xd0);
CHECK(static_cast<int8_t>(result[1]) == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("-9263 (int 16)")
{
json const j = -9263;
std::vector<uint8_t> const expected = {0xd1, 0xdb, 0xd1};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
auto const restored = static_cast<int16_t>((result[1] << 8) + result[2]);
CHECK(restored == -9263);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("-32768..-129 (int 16)")
{
for (int16_t i = -32768; i <= static_cast<std::int16_t>(-129); i = utils::next_integer_sample(i, static_cast<int16_t>(-129), static_cast<int16_t>(7)))
{
CAPTURE(i)
// create JSON value with integer number
json const j = i;
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> const expected
{
0xd1,
static_cast<uint8_t>((i >> 8) & 0xff),
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);
auto const restored = static_cast<int16_t>((result[1] << 8) + result[2]);
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("-32769..-2147483648")
{
std::vector<int32_t> const numbers
{
-32769,
-65536,
-77777,
-1048576,
-2147483648LL,
};
for (auto i : numbers)
{
CAPTURE(i)
// create JSON value with integer number
json const j = i;
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> const expected
{
0xd2,
static_cast<uint8_t>((i >> 24) & 0xff),
static_cast<uint8_t>((i >> 16) & 0xff),
static_cast<uint8_t>((i >> 8) & 0xff),
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] == 0xd2);
uint32_t const restored = (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(static_cast<std::int32_t>(restored) == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("-9223372036854775808..-2147483649 (int 64)")
{
std::vector<int64_t> const numbers
{
(std::numeric_limits<int64_t>::min)(),
-2147483649LL,
};
for (auto i : numbers)
{
CAPTURE(i)
// create JSON value with unsigned integer number
json const j = i;
// check type
CHECK(j.is_number_integer());
// create expected byte vector
std::vector<uint8_t> const expected
{
0xd3,
static_cast<uint8_t>((i >> 070) & 0xff),
static_cast<uint8_t>((i >> 060) & 0xff),
static_cast<uint8_t>((i >> 050) & 0xff),
static_cast<uint8_t>((i >> 040) & 0xff),
static_cast<uint8_t>((i >> 030) & 0xff),
static_cast<uint8_t>((i >> 020) & 0xff),
static_cast<uint8_t>((i >> 010) & 0xff),
static_cast<uint8_t>(i & 0xff),
};
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 9);
// check individual bytes
CHECK(result[0] == 0xd3);
int64_t const restored = (static_cast<int64_t>(result[1]) << 070) +
(static_cast<int64_t>(result[2]) << 060) +
(static_cast<int64_t>(result[3]) << 050) +
(static_cast<int64_t>(result[4]) << 040) +
(static_cast<int64_t>(result[5]) << 030) +
(static_cast<int64_t>(result[6]) << 020) +
(static_cast<int64_t>(result[7]) << 010) +
static_cast<int64_t>(result[8]);
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == 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 const j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> const expected{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);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("128..255 (uint 8)")
{
for (size_t i = 128; i <= 255; ++i)
{
CAPTURE(i)
// create JSON value with unsigned integer number
json const j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> const expected
{
0xcc,
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);
auto const restored = static_cast<uint8_t>(result[1]);
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("256..65535 (uint 16)")
{
for (size_t i = 256; i <= 65535; i = utils::next_integer_sample(i, static_cast<size_t>(65535), static_cast<size_t>(7)))
{
CAPTURE(i)
// create JSON value with unsigned integer number
json const j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> const expected
{
0xcd,
static_cast<uint8_t>((i >> 8) & 0xff),
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);
auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("65536..4294967295 (uint 32)")
{
for (const uint32_t i :
{
65536u, 77777u, 1048576u, 4294967295u
})
{
CAPTURE(i)
// create JSON value with unsigned integer number
json const j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> const expected
{
0xce,
static_cast<uint8_t>((i >> 24) & 0xff),
static_cast<uint8_t>((i >> 16) & 0xff),
static_cast<uint8_t>((i >> 8) & 0xff),
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 const restored = (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);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("4294967296..18446744073709551615 (uint 64)")
{
for (const uint64_t i :
{
4294967296LU, 18446744073709551615LU
})
{
CAPTURE(i)
// create JSON value with unsigned integer number
json const j = i;
// check type
CHECK(j.is_number_unsigned());
// create expected byte vector
std::vector<uint8_t> const expected
{
0xcf,
static_cast<uint8_t>((i >> 070) & 0xff),
static_cast<uint8_t>((i >> 060) & 0xff),
static_cast<uint8_t>((i >> 050) & 0xff),
static_cast<uint8_t>((i >> 040) & 0xff),
static_cast<uint8_t>((i >> 030) & 0xff),
static_cast<uint8_t>((i >> 020) & 0xff),
static_cast<uint8_t>((i >> 010) & 0xff),
static_cast<uint8_t>(i & 0xff),
};
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == 9);
// check individual bytes
CHECK(result[0] == 0xcf);
uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) +
(static_cast<uint64_t>(result[2]) << 060) +
(static_cast<uint64_t>(result[3]) << 050) +
(static_cast<uint64_t>(result[4]) << 040) +
(static_cast<uint64_t>(result[5]) << 030) +
(static_cast<uint64_t>(result[6]) << 020) +
(static_cast<uint64_t>(result[7]) << 010) +
static_cast<uint64_t>(result[8]);
CHECK(restored == i);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
}
SECTION("float")
{
SECTION("3.1415925")
{
double const v = 3.1415925;
json const j = v;
std::vector<uint8_t> const expected =
{
0xcb, 0x40, 0x09, 0x21, 0xfb, 0x3f, 0xa6, 0xde, 0xfc
};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result) == v);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("1.0")
{
double const v = 1.0;
json const j = v;
std::vector<uint8_t> const expected =
{
0xca, 0x3f, 0x80, 0x00, 0x00
};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result) == v);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("128.128")
{
double const v = 128.1280059814453125;
json const j = v;
std::vector<uint8_t> const expected =
{
0xca, 0x43, 0x00, 0x20, 0xc5
};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result) == v);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
}
SECTION("string")
{
SECTION("N = 0..31")
{
// explicitly enumerate the first byte for all 32 strings
const std::vector<uint8_t> first_bytes =
{
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8,
0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1,
0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba,
0xbb, 0xbc, 0xbd, 0xbe, 0xbf
};
for (size_t N = 0; N < first_bytes.size(); ++N)
{
CAPTURE(N)
// create JSON value with string containing of N * 'x'
const auto s = std::string(N, 'x');
json const j = s;
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(first_bytes[N]);
for (size_t i = 0; i < N; ++i)
{
expected.push_back('x');
}
// check first byte
CHECK((first_bytes[N] & 0x1f) == N);
// compare result + size
const auto result = json::to_msgpack(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_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("N = 32..255")
{
for (size_t N = 32; N <= 255; ++N)
{
CAPTURE(N)
// create JSON value with string containing of N * 'x'
const auto s = std::string(N, 'x');
json const j = s;
// create expected byte vector
std::vector<uint8_t> expected;
expected.push_back(0xd9);
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_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == N + 2);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == 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 const 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(), 0xda);
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == N + 3);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == 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 const 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(), 0xdb);
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == N + 5);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
}
SECTION("array")
{
SECTION("empty")
{
json const j = json::array();
std::vector<uint8_t> const expected = {0x90};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("[null]")
{
json const j = {nullptr};
std::vector<uint8_t> const expected = {0x91, 0xc0};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("[1,2,3,4,5]")
{
json const j = json::parse("[1,2,3,4,5]");
std::vector<uint8_t> const expected = {0x95, 0x01, 0x02, 0x03, 0x04, 0x05};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("[[[[]]]]")
{
json const j = json::parse("[[[[]]]]");
std::vector<uint8_t> const expected = {0x91, 0x91, 0x91, 0x90};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("array 16")
{
json j(16, nullptr);
std::vector<uint8_t> expected(j.size() + 3, 0xc0); // all null
expected[0] = 0xdc; // array 16
expected[1] = 0x00; // size (0x0010), byte 0
expected[2] = 0x10; // size (0x0010), byte 1
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("array 32")
{
json j(65536, nullptr);
std::vector<uint8_t> expected(j.size() + 5, 0xc0); // all null
expected[0] = 0xdd; // array 32
expected[1] = 0x00; // size (0x00100000), byte 0
expected[2] = 0x01; // size (0x00100000), byte 1
expected[3] = 0x00; // size (0x00100000), byte 2
expected[4] = 0x00; // size (0x00100000), byte 3
const auto result = json::to_msgpack(j);
//CHECK(result == expected);
CHECK(result.size() == expected.size());
for (size_t i = 0; i < expected.size(); ++i)
{
CAPTURE(i)
CHECK(result[i] == expected[i]);
}
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("object")
{
SECTION("empty")
{
json const j = json::object();
std::vector<uint8_t> const expected = {0x80};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("{\"\":null}")
{
json const j = {{"", nullptr}};
std::vector<uint8_t> const expected = {0x81, 0xa0, 0xc0};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("{\"a\": {\"b\": {\"c\": {}}}}")
{
json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
std::vector<uint8_t> const expected =
{
0x81, 0xa1, 0x61, 0x81, 0xa1, 0x62, 0x81, 0xa1, 0x63, 0x80
};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("map 16")
{
json const j = R"({"00": null, "01": null, "02": null, "03": null,
"04": null, "05": null, "06": null, "07": null,
"08": null, "09": null, "10": null, "11": null,
"12": null, "13": null, "14": null, "15": null})"_json;
const auto result = json::to_msgpack(j);
// Checking against an expected vector byte by byte is
// difficult, because no assumption on the order of key/value
// pairs are made. We therefore only check the prefix (type and
// size) and the overall size. The rest is then handled in the
// roundtrip check.
CHECK(result.size() == 67); // 1 type, 2 size, 16*4 content
CHECK(result[0] == 0xde); // map 16
CHECK(result[1] == 0x00); // byte 0 of size (0x0010)
CHECK(result[2] == 0x10); // byte 1 of size (0x0010)
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
SECTION("map 32")
{
json j;
for (auto i = 0; i < 65536; ++i)
{
// format i to a fixed width of 5
// each entry will need 7 bytes: 6 for fixstr, 1 for null
std::stringstream ss;
ss << std::setw(5) << std::setfill('0') << i;
j.emplace(ss.str(), nullptr);
}
const auto result = json::to_msgpack(j);
// Checking against an expected vector byte by byte is
// difficult, because no assumption on the order of key/value
// pairs are made. We therefore only check the prefix (type and
// size) and the overall size. The rest is then handled in the
// roundtrip check.
CHECK(result.size() == 458757); // 1 type, 4 size, 65536*7 content
CHECK(result[0] == 0xdf); // map 32
CHECK(result[1] == 0x00); // byte 0 of size (0x00010000)
CHECK(result[2] == 0x01); // byte 1 of size (0x00010000)
CHECK(result[3] == 0x00); // byte 2 of size (0x00010000)
CHECK(result[4] == 0x00); // byte 3 of size (0x00010000)
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("extension")
{
SECTION("N = 0..255")
{
for (size_t N = 0; N <= 0xFF; ++N)
{
CAPTURE(N)
// create JSON value with byte array containing of N * 'x'
const auto s = std::vector<uint8_t>(N, 'x');
json j = json::binary(s);
std::uint8_t const subtype = 42;
j.get_binary().set_subtype(subtype);
// create expected byte vector
std::vector<uint8_t> expected;
switch (N)
{
case 1:
expected.push_back(static_cast<std::uint8_t>(0xD4));
break;
case 2:
expected.push_back(static_cast<std::uint8_t>(0xD5));
break;
case 4:
expected.push_back(static_cast<std::uint8_t>(0xD6));
break;
case 8:
expected.push_back(static_cast<std::uint8_t>(0xD7));
break;
case 16:
expected.push_back(static_cast<std::uint8_t>(0xD8));
break;
default:
expected.push_back(static_cast<std::uint8_t>(0xC7));
expected.push_back(static_cast<std::uint8_t>(N));
break;
}
expected.push_back(subtype);
for (size_t i = 0; i < N; ++i)
{
expected.push_back(0x78);
}
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
switch (N)
{
case 1:
case 2:
case 4:
case 8:
case 16:
CHECK(result.size() == N + 2);
break;
default:
CHECK(result.size() == N + 3);
break;
}
// check that no null byte is appended
if (N > 0)
{
CHECK(result.back() != '\x00');
}
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("N = 256..65535")
{
for (std::size_t N :
{
256u, 999u, 1025u, 3333u, 2048u, 65535u
})
{
CAPTURE(N)
// create JSON value with string containing of N * 'x'
const auto s = std::vector<uint8_t>(N, 'x');
json j = json::binary(s);
std::uint8_t const subtype = 42;
j.get_binary().set_subtype(subtype);
// 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(), subtype);
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(), 0xC8);
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == N + 4);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("N = 65536..4294967295")
{
for (std::size_t N :
{
65536u, 77777u, 1048576u
})
{
CAPTURE(N)
// create JSON value with string containing of N * 'x'
const auto s = std::vector<uint8_t>(N, 'x');
json j = json::binary(s);
std::uint8_t const subtype = 42;
j.get_binary().set_subtype(subtype);
// 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(), subtype);
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(), 0xC9);
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == N + 6);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
}
SECTION("binary")
{
SECTION("N = 0..255")
{
for (std::size_t N = 0; N <= 0xFF; ++N)
{
CAPTURE(N)
// create JSON value with byte array containing of N * 'x'
const auto s = std::vector<uint8_t>(N, 'x');
json const j = json::binary(s);
// create expected byte vector
std::vector<std::uint8_t> expected;
expected.push_back(static_cast<std::uint8_t>(0xC4));
expected.push_back(static_cast<std::uint8_t>(N));
for (size_t i = 0; i < N; ++i)
{
expected.push_back(0x78);
}
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == N + 2);
// check that no null byte is appended
if (N > 0)
{
CHECK(result.back() != '\x00');
}
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("N = 256..65535")
{
for (std::size_t N :
{
256u, 999u, 1025u, 3333u, 2048u, 65535u
})
{
CAPTURE(N)
// create JSON value with string containing of N * 'x'
const auto s = std::vector<std::uint8_t>(N, 'x');
json const j = json::binary(s);
// create expected byte vector (hack: create string first)
std::vector<std::uint8_t> expected(N, 'x');
// reverse order of commands, because we insert at begin()
expected.insert(expected.begin(), static_cast<std::uint8_t>(N & 0xff));
expected.insert(expected.begin(), static_cast<std::uint8_t>((N >> 8) & 0xff));
expected.insert(expected.begin(), 0xC5);
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == N + 3);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
SECTION("N = 65536..4294967295")
{
for (std::size_t N :
{
65536u, 77777u, 1048576u
})
{
CAPTURE(N)
// create JSON value with string containing of N * 'x'
const auto s = std::vector<std::uint8_t>(N, 'x');
json const j = json::binary(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<std::uint8_t>(N & 0xff));
expected.insert(expected.begin(), static_cast<std::uint8_t>((N >> 8) & 0xff));
expected.insert(expected.begin(), static_cast<std::uint8_t>((N >> 16) & 0xff));
expected.insert(expected.begin(), static_cast<std::uint8_t>((N >> 24) & 0xff));
expected.insert(expected.begin(), 0xC6);
// compare result + size
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(result.size() == N + 5);
// check that no null byte is appended
CHECK(result.back() != '\x00');
// roundtrip
CHECK(json::from_msgpack(result) == j);
CHECK(json::from_msgpack(result, true, false) == j);
}
}
}
}
SECTION("from float32")
{
auto given = std::vector<uint8_t>({0xca, 0x41, 0xc8, 0x00, 0x01});
json const j = json::from_msgpack(given);
CHECK(j.get<double>() == Approx(25.0000019073486));
}
SECTION("errors")
{
SECTION("empty byte vector")
{
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>()), "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
CHECK(json::from_msgpack(std::vector<uint8_t>(), true, false).is_discarded());
}
SECTION("too short byte vector")
{
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x87})),
"[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcc})),
"[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcd})),
"[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcd, 0x00})),
"[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce})),
"[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00})),
"[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00})),
"[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00, 0x00})),
"[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf})),
"[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00})),
"[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00})),
"[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00})),
"[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00})),
"[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00})),
"[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})),
"[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})),
"[json.exception.parse_error.110] parse error at byte 9: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xa5, 0x68, 0x65})),
"[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x92, 0x01})),
"[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xa1, 0x61})),
"[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xc4, 0x02})),
"[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack binary: unexpected end of input", json::parse_error&);
CHECK(json::from_msgpack(std::vector<uint8_t>({0x87}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcc}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcd}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcd, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xce}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xa5, 0x68, 0x65}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0x92, 0x01}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0x81, 0xA1, 0x61}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xc4, 0x02}), true, false).is_discarded());
CHECK(json::from_msgpack(std::vector<uint8_t>({0xc4}), true, false).is_discarded());
}
SECTION("unexpected end inside int with stream")
{
json _;
const std::string data = {static_cast<char>(0xd2u), static_cast<char>(0x12u), static_cast<char>(0x34u), static_cast<char>(0x56u)};
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::istringstream(data, std::ios::binary)),
"[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
}
SECTION("misuse wchar for binary")
{
json _;
// creates 0xd2 after UTF-8 decoding, triggers get_elements in wide_string_input_adapter for code coverage
const std::u32string data = {static_cast<char32_t>(0x0280)};
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(data),
"[json.exception.parse_error.112] parse error at byte 1: wide string type cannot be interpreted as binary data", json::parse_error&);
}
SECTION("unsupported bytes")
{
SECTION("concrete examples")
{
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xc1})), "[json.exception.parse_error.112] parse error at byte 1: syntax error while parsing MessagePack value: invalid byte: 0xC1", json::parse_error&);
}
SECTION("all unsupported bytes")
{
for (auto byte :
{
// never used
0xc1
})
{
json _;
CHECK_THROWS_AS(_ = json::from_msgpack(std::vector<uint8_t>({static_cast<uint8_t>(byte)})), json::parse_error&);
CHECK(json::from_msgpack(std::vector<uint8_t>({static_cast<uint8_t>(byte)}), true, false).is_discarded());
}
}
}
SECTION("invalid string in map")
{
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack object key: only string keys are supported, but found an integer; last byte: 0xFF", json::parse_error&);
CHECK(json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01}), true, false).is_discarded());
}
SECTION("non-string key (see #3381)")
{
// only strings map to JSON object keys; any other key is rejected
// with a message naming its type
const std::vector<std::pair<std::vector<std::uint8_t>, std::string>> cases =
{
{{0x81, 0xC0, 0x01}, "nil; last byte: 0xC0"},
{{0x81, 0xC2, 0x01}, "a boolean; last byte: 0xC2"},
{{0x81, 0xC3, 0x01}, "a boolean; last byte: 0xC3"},
{{0x81, 0xCA, 0x3F, 0x80, 0x00, 0x00, 0x01}, "a float; last byte: 0xCA"},
{{0x81, 0xCB, 0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, "a float; last byte: 0xCB"},
{{0x81, 0xC4, 0x00, 0x01}, "a bin; last byte: 0xC4"},
{{0x81, 0xC5, 0x00, 0x00, 0x01}, "a bin; last byte: 0xC5"},
{{0x81, 0xC6, 0x00, 0x00, 0x00, 0x00, 0x01}, "a bin; last byte: 0xC6"},
{{0x81, 0xC7, 0x00, 0x01, 0x01}, "an ext; last byte: 0xC7"},
{{0x81, 0xC8, 0x00, 0x00, 0x01, 0x01}, "an ext; last byte: 0xC8"},
{{0x81, 0xC9, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}, "an ext; last byte: 0xC9"},
{{0x81, 0xD4, 0x01, 0x00, 0x01}, "an ext; last byte: 0xD4"},
{{0x81, 0xD5, 0x01, 0x00, 0x00, 0x01}, "an ext; last byte: 0xD5"},
{{0x81, 0xD6, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01}, "an ext; last byte: 0xD6"},
{{0x81, 0xD7, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, "an ext; last byte: 0xD7"},
{{0x81, 0xD8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, "an ext; last byte: 0xD8"},
{{0x81, 0xCC, 0x01, 0x01}, "an integer; last byte: 0xCC"},
{{0x81, 0xCD, 0x00, 0x01, 0x01}, "an integer; last byte: 0xCD"},
{{0x81, 0xCE, 0x00, 0x00, 0x00, 0x01, 0x01}, "an integer; last byte: 0xCE"},
{{0x81, 0xCF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}, "an integer; last byte: 0xCF"},
{{0x81, 0xD0, 0x01, 0x01}, "an integer; last byte: 0xD0"},
{{0x81, 0xD1, 0x00, 0x01, 0x01}, "an integer; last byte: 0xD1"},
{{0x81, 0xD2, 0x00, 0x00, 0x00, 0x01, 0x01}, "an integer; last byte: 0xD2"},
{{0x81, 0xD3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}, "an integer; last byte: 0xD3"},
{{0x81, 0x00, 0x01}, "an integer; last byte: 0x00"},
{{0x81, 0x7F, 0x01}, "an integer; last byte: 0x7F"},
{{0x81, 0xE0, 0x01}, "an integer; last byte: 0xE0"},
{{0x81, 0x80, 0x01}, "a map; last byte: 0x80"},
{{0x81, 0x8F, 0x01}, "a map; last byte: 0x8F"},
{{0x81, 0xDE, 0x00, 0x00, 0x01}, "a map; last byte: 0xDE"},
{{0x81, 0xDF, 0x00, 0x00, 0x00, 0x00, 0x01}, "a map; last byte: 0xDF"},
{{0x81, 0x90, 0x01}, "an array; last byte: 0x90"},
{{0x81, 0x9F, 0x01}, "an array; last byte: 0x9F"},
{{0x81, 0xDC, 0x00, 0x00, 0x01}, "an array; last byte: 0xDC"},
{{0x81, 0xDD, 0x00, 0x00, 0x00, 0x00, 0x01}, "an array; last byte: 0xDD"},
};
for (const auto& c : cases)
{
CAPTURE(c.first)
const std::string expected = "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack object key: only string keys are supported, but found " + c.second;
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(c.first), expected.c_str(), json::parse_error&);
CHECK(json::from_msgpack(c.first, true, false).is_discarded());
}
json _;
// the unused byte 0xC1 is still reported as a malformed string
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xC1, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack string: expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0xC1", json::parse_error&);
// a missing key is still reported as the end of input
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
}
SECTION("invalid UTF-8 in string (see #5529)")
{
// a fixstr of length 2 (0xA0 | 2) whose bytes are not valid UTF-8
// (0xC0 0xAE is an overlong encoding of '.') must be rejected at
// decode time, matching every other kind of malformed binary
// input, rather than only failing later when the resulting
// value is dumped
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xa2, 0xc0, 0xae})), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing MessagePack string: invalid string: ill-formed UTF-8 byte", json::parse_error&);
CHECK(json::from_msgpack(std::vector<uint8_t>({0xa2, 0xc0, 0xae}), true, false).is_discarded());
// a MessagePack bin8 blob with the very same bytes is NOT text
// and must still be accepted as-is
CHECK_NOTHROW(_ = json::from_msgpack(std::vector<uint8_t>({0xc4, 0x02, 0xc0, 0xae})));
CHECK(_ == json::binary(std::vector<std::uint8_t>({0xc0, 0xae})));
// valid UTF-8 must still round-trip
const json j = "h\xc3\xa9llo, w\xc3\xb6rld! \xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e"; // héllo, wörld! 日本語
CHECK(json::from_msgpack(json::to_msgpack(j)) == j);
}
SECTION("strict mode")
{
std::vector<uint8_t> const vec = {0xc0, 0xc0};
SECTION("non-strict mode")
{
const auto result = json::from_msgpack(vec, false);
CHECK(result == json());
}
SECTION("strict mode")
{
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(vec), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack value: expected end of input; last byte: 0xC0", json::parse_error&);
CHECK(json::from_msgpack(vec, true, false).is_discarded());
}
}
}
SECTION("SAX aborts")
{
SECTION("start_array(len)")
{
std::vector<uint8_t> const v = {0x93, 0x01, 0x02, 0x03};
SaxCountdown scp(0);
CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
}
SECTION("start_object(len)")
{
std::vector<uint8_t> const v = {0x81, 0xa3, 0x66, 0x6F, 0x6F, 0xc2};
SaxCountdown scp(0);
CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
}
SECTION("key()")
{
std::vector<uint8_t> const v = {0x81, 0xa3, 0x66, 0x6F, 0x6F, 0xc2};
SaxCountdown scp(1);
CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
}
}
}
TEST_CASE("issue #5405 - array reserve for definite-length MessagePack arrays")
{
#if !defined(JSON_NOEXCEPTION)
// this SECTION relies on catching a thrown exception to distinguish
// which of two acceptable, bounded rejections a hostile header took;
// under JSON_NOEXCEPTION, JSON_THROW never produces a catchable C++
// exception (it aborts instead), so this cannot be tested that way here
SECTION("a huge claimed length with no element data must not over-allocate")
{
// 0xdd: array 32 (four-byte length); claims 0xFFFFFFFF (4294967295)
// elements but provides none. max_size() for a std::vector is far
// larger than this count, so it does not reject the header outright;
// the (capped) reservation must not attempt to allocate space for
// billions of elements before the missing data is detected.
json _;
const std::vector<uint8_t> input = {0xdd, 0xFF, 0xFF, 0xFF, 0xFF};
// On a platform where std::size_t is narrower than 64 bits (e.g.
// 32-bit), the claimed count 0xFFFFFFFF coincides with that
// platform's SIZE_MAX, which some size-narrowing checks treat the
// same as detail::unknown_size(); it may then be rejected before
// the SAX consumer's own max_size() check (out_of_range.408) rather
// than being accepted and only found short of data once the
// (capped) reservation looks for element bytes that were never
// provided (parse_error.110). Either is an acceptable, bounded
// rejection of the hostile header -- the property under test is
// that no path attempts to allocate space for billions of elements.
bool threw = false;
try
{
_ = json::from_msgpack(input);
}
catch (const json::parse_error& e)
{
threw = true;
CHECK(e.id == 110);
CHECK(std::string(e.what()) == "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing MessagePack value: unexpected end of input");
}
catch (const json::out_of_range& e)
{
threw = true;
CHECK(e.id == 408);
CHECK(std::string(e.what()).find("excessive") != std::string::npos);
}
CHECK(threw);
CHECK(json::from_msgpack(input, true, false).is_discarded());
}
#endif
SECTION("arrays of various sizes decode to the same value as before the reserve optimization")
{
for (const auto size :
{
std::size_t{0}, std::size_t{1}, std::size_t{5}, // small
std::size_t{16384}, // exactly at the reserve cap
std::size_t{20000} // above the reserve cap
})
{
CAPTURE(size)
json j = json::array();
for (std::size_t i = 0; i < size; ++i)
{
j.push_back(static_cast<int>(i % 1000));
}
const auto packed = json::to_msgpack(j);
CHECK(json::from_msgpack(packed) == j);
}
}
SECTION("a user-defined SAX consumer is unaffected by the internal DOM reserve optimization")
{
// the reserve() call is local to json_sax_dom_parser / json_sax_dom_callback_parser;
// a custom SAX consumer that does not touch a DOM array sees identical events
json j = json::array();
for (int i = 0; i < 100; ++i)
{
j.push_back(i);
}
const auto packed = json::to_msgpack(j);
SaxCountdown scp(1000000); // large enough to never trigger an abort
CHECK(json::sax_parse(packed, &scp, json::input_format_t::msgpack));
}
}
TEST_CASE("regression test - MessagePack ext type rejects a subtype that doesn't fit a single byte")
{
// subtype 0-255 must still round-trip correctly (regression guard, pre-existing behavior)
CHECK(json::from_msgpack(json::to_msgpack(json::binary({1, 2}, 0))).get_binary().subtype() == 0);
CHECK(json::from_msgpack(json::to_msgpack(json::binary({1, 2}, 200))).get_binary().subtype() == 200);
CHECK(json::from_msgpack(json::to_msgpack(json::binary({1, 2}, 255))).get_binary().subtype() == 255);
// a subtype > 255 must throw instead of silently truncating
CHECK_THROWS_AS(json::to_msgpack(json::binary({1, 2}, 256)), json::out_of_range);
CHECK_THROWS_WITH_AS(json::to_msgpack(json::binary({1, 2}, 70000)), "[json.exception.out_of_range.415] subtype 70000 is too large for the MessagePack ext type (max 255)", json::out_of_range);
// a binary value with no subtype at all must be unaffected
CHECK(json::from_msgpack(json::to_msgpack(json::binary({1, 2}))).get_binary().has_subtype() == false);
}
// use this testcase outside [hide] to run it with Valgrind
TEST_CASE("MessagePack nesting does not consume the call stack")
{
// Reading a container used to call back into the value reader once per
// element, so the native call stack grew with the nesting depth of the
// input: one frame per byte for repeated 0x91 (a one-element array), which
// crashes the process long before the input is exhausted (#5104). The
// containers are kept on a heap stack now.
//
// Note that deeply nested values must not be compared, copied or dumped
// here: those operations are still recursive, and would reintroduce the
// very crash this checks for. Depth is measured by descending instead.
SECTION("an unterminated chain is reported, not crashed on")
{
json _;
const std::vector<uint8_t> input(300000, 0x91);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(input), "[json.exception.parse_error.110] parse error at byte 300001: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
CHECK(json::from_msgpack(input, true, false).is_discarded());
}
SECTION("a well-formed deep value is read through the SAX interface")
{
std::vector<uint8_t> input(300000, 0x91);
input.push_back(0x01); // innermost value
SaxCountdown accept_all(600001);
CHECK(json::sax_parse(input, &accept_all, json::input_format_t::msgpack));
}
SECTION("a well-formed deep value is read into a value")
{
const std::size_t depth = 10000;
std::vector<uint8_t> input(depth, 0x91);
input.push_back(0x01);
json j = json::from_msgpack(input);
std::size_t measured = 0;
const json* p = &j;
while (p->is_array() && !p->empty())
{
p = &p->front();
++measured;
}
CHECK(measured == depth);
CHECK(p->is_number());
}
SECTION("containers are still read the same way")
{
CHECK(json::from_msgpack(std::vector<uint8_t>({0x90})) == json::array());
CHECK(json::from_msgpack(std::vector<uint8_t>({0x80})) == json::object());
CHECK(json::from_msgpack(std::vector<uint8_t>({0x92, 0x90, 0x80})) == json({json::array(), json::object()}));
CHECK(json::from_msgpack(std::vector<uint8_t>({0x91, 0x91, 0x91, 0x90})) == json({{{json::array()}}}));
CHECK(json::from_msgpack(std::vector<uint8_t>({0x81, 0xA1, 'a', 0x81, 0xA1, 'b', 0x92, 0x01, 0x02})) == json({{"a", {{"b", {1, 2}}}}}));
// array 16 and map 32, i.e. the counted forms
CHECK(json::from_msgpack(std::vector<uint8_t>({0xDC, 0x00, 0x02, 0x01, 0x02})) == json({1, 2}));
CHECK(json::from_msgpack(std::vector<uint8_t>({0xDF, 0x00, 0x00, 0x00, 0x01, 0xA1, 'k', 0xC3})) == json({{"k", true}}));
}
}
TEST_CASE("MessagePack input that cannot be read is discarded by every overload")
{
std::vector<std::uint8_t> input = json::to_msgpack(json({{"a", {1, 2}}}));
input.pop_back();
json _;
CHECK_THROWS_AS(_ = json::from_msgpack(input.begin(), input.end()), json::parse_error&);
CHECK(json::from_msgpack(input, true, false).is_discarded());
CHECK(json::from_msgpack(input.begin(), input.end(), true, false).is_discarded());
CHECK(json::from_msgpack(input.data(), input.size(), true, false).is_discarded());
CHECK(json::from_msgpack({input.data(), input.size()}, true, false).is_discarded());
}
TEST_CASE("MessagePack SAX parsing stops at every event")
{
// Containers are opened and closed by the loop that reads them; a SAX
// handler that rejects any event - including the end of a nested
// container - must stop the parse right there.
const auto count_events = [](const std::vector<std::uint8_t>& input)
{
int events = 0;
while (true)
{
SaxCountdown scp(events);
if (json::sax_parse(input, &scp, json::input_format_t::msgpack))
{
return events;
}
++events;
REQUIRE(events < 1000);
}
};
// 20 events: every container kind closes inside another one
const json j = json::parse(R"({"a": [1, {"b": []}], "c": {"d": [[2]]}})");
CHECK(count_events(json::to_msgpack(j)) == 20);
}
TEST_CASE("single MessagePack roundtrip")
{
SECTION("sample.json")
{
std::string const filename = TEST_DATA_DIRECTORY "/json_testsuite/sample.json";
// parse JSON file
std::ifstream f_json(filename);
const json j1 = json::parse(f_json);
// parse MessagePack file
auto packed = utils::read_binary_file(filename + ".msgpack");
json j2;
CHECK_NOTHROW(j2 = json::from_msgpack(packed));
// compare parsed JSON values
CHECK(j1 == j2);
SECTION("roundtrips")
{
SECTION("std::ostringstream")
{
std::basic_ostringstream<char> ss;
json::to_msgpack(j1, ss);
json j3 = json::from_msgpack(ss.str());
CHECK(j1 == j3);
}
SECTION("std::string")
{
std::string s;
json::to_msgpack(j1, s);
json j3 = json::from_msgpack(s);
CHECK(j1 == j3);
}
}
// check with different start index
packed.insert(packed.begin(), 5, 0xff);
CHECK(j1 == json::from_msgpack(packed.begin() + 5, packed.end()));
}
}
TEST_CASE("Parse MessagePack directly from a file using iterator and sentinel")
{
std::string const filename = TEST_DATA_DIRECTORY "/json_testsuite/sample.json.msgpack";
std::ifstream file(filename, std::ios::binary);
const std::istreambuf_iterator<char> first(file);
const json parsed = json::from_msgpack(first, utils::istreambuf_sentinel{});
CHECK((parsed.is_object() || parsed.is_array()));
}
TEST_CASE("MessagePack round-trip invariants")
{
// This checks what the parse_msgpack_fuzzer driver checks (see
// tests/src/fuzzer-parse_msgpack.cpp), so that a regression shows up in
// CI rather than as an OSS-Fuzz report: anything from_msgpack() returns
// (j1) can be serialized, parsed back (j2), and serialized again to
// reproduce the exact bytes.
for (const auto& j0 : utils::round_trip_corpus::values())
{
json j1;
try
{
// turn the corpus value into a value as from_msgpack() returns it
j1 = json::from_msgpack(json::to_msgpack(j0));
}
catch (const json::exception&)
{
// the fuzzer driver only ever sees values from_msgpack() actually
// produced, so skip corpus values that do not survive the
// round trip here, too
continue;
}
INFO("j1 = " << j1.dump());
const std::vector<std::uint8_t> vec = json::to_msgpack(j1);
json j2;
// anything the library writes must be parsable by the library
REQUIRE_NOTHROW(j2 = json::from_msgpack(vec));
CHECK(json::to_msgpack(j2) == vec);
}
}
TEST_CASE("MessagePack roundtrips" * doctest::skip())
{
SECTION("input from msgpack-python")
{
// most of these are excluded due to differences in key order (not a real problem)
std::set<std::string> exclude_packed;
exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/1.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/2.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/3.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/4.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/5.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/json_testsuite/sample.json"); // kills AppVeyor
exclude_packed.insert(TEST_DATA_DIRECTORY "/json_tests/pass1.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/regression/working_file.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_basic.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_long_strings.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_simple.json");
exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_string_unicode.json");
for (std::string filename :
{
TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json",
TEST_DATA_DIRECTORY "/json.org/1.json",
TEST_DATA_DIRECTORY "/json.org/2.json",
TEST_DATA_DIRECTORY "/json.org/3.json",
TEST_DATA_DIRECTORY "/json.org/4.json",
TEST_DATA_DIRECTORY "/json.org/5.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip01.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip02.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip03.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip04.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip05.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip06.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip07.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip08.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip09.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip10.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip11.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip12.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip13.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip14.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip15.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip16.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip17.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip18.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip19.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip20.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip21.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip22.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip23.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip24.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip25.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip26.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip27.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip28.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip29.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip30.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip31.json",
TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip32.json",
TEST_DATA_DIRECTORY "/json_testsuite/sample.json", // kills AppVeyor
TEST_DATA_DIRECTORY "/json_tests/pass1.json",
TEST_DATA_DIRECTORY "/json_tests/pass2.json",
TEST_DATA_DIRECTORY "/json_tests/pass3.json",
TEST_DATA_DIRECTORY "/regression/floats.json",
TEST_DATA_DIRECTORY "/regression/signed_ints.json",
TEST_DATA_DIRECTORY "/regression/unsigned_ints.json",
TEST_DATA_DIRECTORY "/regression/working_file.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_arraysWithSpaces.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_empty-string.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_empty.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_ending_with_newline.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_false.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_heterogeneous.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_null.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_1_and_newline.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_leading_space.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_several_null.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_trailing_space.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_0e+1.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_0e1.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_after_space.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_double_close_to_zero.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_double_huge_neg_exp.json",
//TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_int_with_exp.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_minus_zero.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_int.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_one.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_zero.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e_neg_exp.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e_pos_exp.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_exponent.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_fraction_exponent.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_neg_exp.json",
//TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_pos_exponent.json",
//TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_underflow.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_simple_int.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_simple_real.json",
//TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_too_big_neg_int.json",
//TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_too_big_pos_int.json",
//TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_very_big_negative_int.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_basic.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key_and_value.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_empty.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_empty_key.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_escaped_null_in_key.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_extreme_numbers.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_long_strings.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_simple.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_string_unicode.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_with_newlines.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_1_2_3_bytes_UTF-8_sequences.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_UTF-16_Surrogates_U+1D11E_MUSICAL_SYMBOL_G_CLEF.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pair.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pairs.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_allowed_escapes.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_backslash_and_u_escaped_zero.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_backslash_doublequotes.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_comments.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_double_escape_a.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_double_escape_n.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_escaped_control_character.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_escaped_noncharacter.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_in_array.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_in_array_with_leading_space.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_last_surrogates_1_and_2.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_newline_uescaped.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+10FFFF.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+1FFFF.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+FFFF.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_null_escape.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_one-byte-utf-8.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_pi.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_simple_ascii.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_space.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_three-byte-utf-8.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_two-byte-utf-8.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_u+2028_line_sep.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_u+2029_par_sep.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_uEscape.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unescaped_char_delete.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicodeEscapedBackslash.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_2.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_U+200B_ZERO_WIDTH_SPACE.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_U+2064_invisible_plus.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_escaped_double_quote.json",
// TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_utf16.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_utf8.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_with_del_character.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_false.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_int.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_negative_real.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_null.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_string.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_true.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_string_empty.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_trailing_newline.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_true_in_array.json",
TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_whitespace_array.json"
})
{
CAPTURE(filename)
std::ifstream f_json(filename);
const json j1 = json::parse(f_json);
auto packed = utils::read_binary_file(filename + ".msgpack");
{
INFO_WITH_TEMP(filename + ": std::vector<uint8_t>");
json j2;
CHECK_NOTHROW(j2 = json::from_msgpack(packed));
CHECK(j1 == j2);
}
{
INFO_WITH_TEMP(filename + ": std::ifstream");
std::ifstream f_msgpack(filename + ".msgpack", std::ios::binary);
json j2;
CHECK_NOTHROW(j2 = json::from_msgpack(f_msgpack));
CHECK(j1 == j2);
}
{
INFO_WITH_TEMP(filename + ": uint8_t* and size");
json j2;
CHECK_NOTHROW(j2 = json::from_msgpack({packed.data(), packed.size()}));
CHECK(j1 == j2);
}
{
INFO_WITH_TEMP(filename + ": output to output adapters");
if (exclude_packed.count(filename) == 0u)
{
{
INFO_WITH_TEMP(filename + ": output adapters: std::vector<uint8_t>");
std::vector<uint8_t> vec;
json::to_msgpack(j1, vec);
CHECK(vec == packed);
}
}
}
}
}
}
#ifdef JSON_HAS_CPP_17
// Test suite for verifying MessagePack handling with std::byte input
TEST_CASE("MessagePack with std::byte")
{
SECTION("std::byte compatibility")
{
SECTION("vector roundtrip")
{
json original =
{
{"name", "test"},
{"value", 42},
{"array", {1, 2, 3}}
};
std::vector<uint8_t> temp = json::to_msgpack(original);
// Convert the uint8_t vector to std::byte vector
std::vector<std::byte> msgpack_data(temp.size());
for (size_t i = 0; i < temp.size(); ++i)
{
msgpack_data[i] = std::byte(temp[i]);
}
// Deserialize from std::byte vector back to JSON
json from_bytes;
CHECK_NOTHROW(from_bytes = json::from_msgpack(msgpack_data));
CHECK(from_bytes == original);
}
SECTION("empty vector")
{
const std::vector<std::byte> empty_data;
CHECK_THROWS_WITH_AS([&]()
{
[[maybe_unused]] auto result = json::from_msgpack(empty_data);
return true;
}
(),
"[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing MessagePack value: unexpected end of input",
json::parse_error&);
}
SECTION("comparison with workaround")
{
json original =
{
{"string", "hello"},
{"integer", 42},
{"float", 3.14},
{"boolean", true},
{"null", nullptr},
{"array", {1, 2, 3}},
{"object", {{"key", "value"}}}
};
std::vector<uint8_t> temp = json::to_msgpack(original);
std::vector<std::byte> msgpack_data(temp.size());
for (size_t i = 0; i < temp.size(); ++i)
{
msgpack_data[i] = std::byte(temp[i]);
}
// Attempt direct deserialization using std::byte input
const json direct_result = json::from_msgpack(msgpack_data);
// Test the workaround approach: reinterpret as unsigned char* and use iterator range
const auto* const char_start = reinterpret_cast<unsigned char const*>(msgpack_data.data());
const auto* const char_end = char_start + msgpack_data.size();
json workaround_result = json::from_msgpack(char_start, char_end);
// Verify that the final deserialized JSON matches the original JSON
CHECK(direct_result == workaround_result);
CHECK(direct_result == original);
}
}
}
#endif
// the fake sizes below do not fit into a 32-bit std::size_t
// with clang and libstdc++ 10, the std::filesystem::path conversion that
// C++17 builds consider for every string type is ambiguous for a class
// derived from std::string, so the string case is not tested there
#if !(defined(__clang__) && defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE < 11)
#define JSON_TEST_BEYOND_UINT32_STRING 1
#endif
#if SIZE_MAX > UINT32_MAX
template<typename T, typename A = std::allocator<T>>
struct huge_array : std::vector<T, A>
{
using base = std::vector<T, A>;
using base::base;
bool fake_size = false;
std::size_t size() const noexcept
{
if (fake_size)
{
return (std::numeric_limits<std::uint32_t>::max)() + 1ULL;
}
return base::size();
}
};
using huge_array_json = nlohmann::basic_json <
std::map, huge_array, std::string, bool, std::int64_t, std::uint64_t,
double, std::allocator, nlohmann::adl_serializer,
std::vector<std::uint8_t>, void >;
TEST_CASE("MessagePack Size above uint32 for array")
{
huge_array_json j = huge_array_json::array();
j.push_back(1);
j.push_back(2);
j.push_back(3);
auto& array = j.get_ref<huge_array_json::array_t&>();
array.fake_size = true;
// write into a caller-owned vector: to_msgpack(j) reserves space based on
// the (faked) element count, which fails with bad_alloc on Windows
std::vector<std::uint8_t> result;
CHECK_THROWS_WITH_AS(
huge_array_json::to_msgpack(j, result),
"[json.exception.out_of_range.412] MessagePack length 4294967296 exceeds maximum of 4294967295",
json::out_of_range&);
array.fake_size = false;
}
template<typename K, typename V,
typename C = std::less<K>,
typename A = std::allocator<std::pair<const K, V>>>
struct huge_map : std::map<K, V, C, A>
{
using base = std::map<K, V, C, A>;
using base::base;
bool fake_size = false;
std::size_t size() const noexcept
{
if (fake_size)
{
return static_cast<std::size_t>(UINT32_MAX) + 1ULL;
}
return base::size();
}
};
using huge_object_json = nlohmann::basic_json <
huge_map,
std::vector,
std::string,
bool,
std::int64_t,
std::uint64_t,
double,
std::allocator,
nlohmann::adl_serializer,
std::vector<std::uint8_t>,
void >;
TEST_CASE("MessagePack Size above uint32 for object")
{
huge_object_json j = huge_object_json::object();
j["one"] = 1;
j["two"] = 2;
auto& object = j.get_ref<huge_object_json::object_t&>();
object.fake_size = true;
// write into a caller-owned vector: to_msgpack(j) reserves space based on
// the (faked) element count, which fails with bad_alloc on Windows
std::vector<std::uint8_t> result;
CHECK_THROWS_WITH_AS(
huge_object_json::to_msgpack(j, result),
"[json.exception.out_of_range.412] MessagePack length 4294967296 exceeds maximum of 4294967295",
json::out_of_range&);
object.fake_size = false;
}
#ifdef JSON_TEST_BEYOND_UINT32_STRING
struct huge_string : std::string
{
using std::string::string;
std::size_t size() const noexcept // NOLINT(readability-convert-member-functions-to-static)
{
return static_cast<std::size_t>(UINT32_MAX) + 1ULL;
}
};
using huge_string_json = nlohmann::basic_json <
std::map,
std::vector,
huge_string,
bool,
std::int64_t,
std::uint64_t,
double,
std::allocator,
nlohmann::adl_serializer,
std::vector<std::uint8_t>,
void >;
TEST_CASE("MessagePack Size above uint32 for string")
{
const huge_string_json j = "hello";
CHECK_THROWS_WITH_AS(
huge_string_json::to_msgpack(j),
"[json.exception.out_of_range.412] MessagePack length 4294967296 exceeds maximum of 4294967295",
json::out_of_range&);
}
#endif
struct huge_binary : std::vector<std::uint8_t>
{
using std::vector<std::uint8_t>::vector;
std::size_t size() const noexcept // NOLINT(readability-convert-member-functions-to-static)
{
return static_cast<std::size_t>(UINT32_MAX) + 1ULL;
}
};
using huge_binary_json = nlohmann::basic_json <
std::map,
std::vector,
std::string,
bool,
std::int64_t,
std::uint64_t,
double,
std::allocator,
nlohmann::adl_serializer,
huge_binary,
void >;
TEST_CASE("MessagePack Size above uint32 for binary")
{
huge_binary_json j = huge_binary_json::binary(huge_binary{});
j.get_binary().push_back(0x01);
j.get_binary().push_back(0x02);
CHECK_THROWS_WITH_AS(
huge_binary_json::to_msgpack(j),
"[json.exception.out_of_range.412] MessagePack length 4294967296 exceeds maximum of 4294967295",
json::out_of_range&);
}
#endif
namespace
{
// types that report a size beyond UINT32_MAX without allocating that much
// memory, so the MessagePack length limit can be tested cheaply; see the
// similar types in unit-bson.cpp
std::size_t beyond_uint32_size()
{
return static_cast<std::size_t>((std::numeric_limits<std::uint32_t>::max)()) + 1;
}
class beyond_uint32_binary_t : public std::vector<std::uint8_t>
{
public:
using std::vector<std::uint8_t>::vector;
size_type size() const noexcept // NOLINT(readability-convert-member-functions-to-static)
{
return beyond_uint32_size();
}
};
#ifdef JSON_TEST_BEYOND_UINT32_STRING
class beyond_uint32_string_t : public std::string
{
public:
using std::string::string;
size_type size() const noexcept // NOLINT(readability-convert-member-functions-to-static)
{
return beyond_uint32_size();
}
};
using beyond_uint32_string_json = nlohmann::basic_json <
std::map, std::vector, beyond_uint32_string_t, bool, std::int64_t, std::uint64_t,
double, std::allocator, nlohmann::adl_serializer, std::vector<std::uint8_t>, void >;
#endif
using beyond_uint32_binary_json = nlohmann::basic_json <
std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t,
double, std::allocator, nlohmann::adl_serializer, beyond_uint32_binary_t, void >;
} // namespace
TEST_CASE("MessagePack lengths beyond UINT32_MAX cannot be serialized")
{
// MessagePack stores the length of a string, binary value, array, or
// object in at most 32 bits; a larger one used to be written without any
// length at all
#if SIZE_MAX > UINT32_MAX
{
const char* const expected = "[json.exception.out_of_range.412] MessagePack length 4294967296 exceeds maximum of 4294967295";
const beyond_uint32_binary_json binary = beyond_uint32_binary_json::binary(beyond_uint32_binary_t{});
CHECK_THROWS_WITH_AS(beyond_uint32_binary_json::to_msgpack(binary), expected, beyond_uint32_binary_json::out_of_range&);
const beyond_uint32_binary_json ext = beyond_uint32_binary_json::binary(beyond_uint32_binary_t{}, 42);
CHECK_THROWS_WITH_AS(beyond_uint32_binary_json::to_msgpack(ext), expected, beyond_uint32_binary_json::out_of_range&);
#ifdef JSON_TEST_BEYOND_UINT32_STRING
// created from its type rather than from a beyond_uint32_string_t:
// that would consider the std::filesystem::path conversion, which
// libstdc++ 10 cannot decide for a class derived from std::string
const beyond_uint32_string_json string(beyond_uint32_string_json::value_t::string);
CHECK_THROWS_WITH_AS(beyond_uint32_string_json::to_msgpack(string), expected, beyond_uint32_string_json::out_of_range&);
#endif
}
#endif
}
TEST_CASE("MessagePack numbers use the active union member (see #5644)")
{
// when number_integer_t is narrower than number_unsigned_t, to_msgpack()
// used to read the union member that was not the active one, writing
// wrong bytes for some values; std::int64_t/std::uint64_t (the default
// types, where both members have the same width) were not affected
using int32_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int32_t, std::uint64_t, double>;
using int16_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int16_t, std::uint64_t, double>;
SECTION("number_integer_t = std::int32_t")
{
SECTION("6442450944 (uint 64; the low 32 bits used to be sign-extended)")
{
const int32_json j = 6442450944ULL;
CHECK(j.is_number_unsigned());
std::vector<uint8_t> const expected{0xcf, 0x00, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00};
const auto result = int32_json::to_msgpack(j);
CHECK(result == expected);
CHECK(int32_json::from_msgpack(result) == j);
}
SECTION("4294967496 (uint 64; the low 32 bits used to be the whole value)")
{
const int32_json j = 4294967496ULL;
CHECK(j.is_number_unsigned());
std::vector<uint8_t> const expected{0xcf, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0xc8};
const auto result = int32_json::to_msgpack(j);
CHECK(result == expected);
CHECK(int32_json::from_msgpack(result) == j);
}
}
SECTION("number_integer_t = std::int16_t, 98304 (uint 32)")
{
const int16_json j = 98304ULL;
CHECK(j.is_number_unsigned());
std::vector<uint8_t> const expected{0xce, 0x00, 0x01, 0x80, 0x00};
const auto result = int16_json::to_msgpack(j);
CHECK(result == expected);
CHECK(int16_json::from_msgpack(result) == j);
}
SECTION("default types (std::int64_t/std::uint64_t) are unaffected")
{
const json j = 4294967496ULL;
CHECK(j.is_number_unsigned());
std::vector<uint8_t> const expected{0xcf, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0xc8};
const auto result = json::to_msgpack(j);
CHECK(result == expected);
CHECK(json::from_msgpack(result) == j);
}
}