Files
json/tests/abi/config/noversion.cpp
T
Niels Lohmann 809ace26b3 Keep writing ill-formed UTF-8 unchanged unless JSON_STRICT_BINARY_UTF8 is set
Throwing type_error.316 from to_cbor(), to_ubjson(), to_bjdata(), and
to_bson() by default would break code that works with 3.12.0, for example
code that stores ISO 8859-1 in a string and only writes it to a binary
format. Following the plan for 4.0.0, the check is now opt-in via the new
macro JSON_STRICT_BINARY_UTF8 (default 0), which is planned to become the
default in 4.0.0:

- abi_macros.hpp: default 0 and ABI tag _sbu8; macro_unscope.hpp undefines
  it; CMake option JSON_StrictBinaryUTF8; ABI namespace tests updated.
- binary_writer: the four writers call check_text_utf8(), which checks
  only if the macro is enabled. BON8 always checks, MessagePack never.
- Tests: the strict checks move to unit-binary_utf8_strict.cpp, which
  defines the macro; the per-format tests now check that the default
  writes the bytes unchanged (from_X(to_X(j)) == j).
- Docs: new macro page, macro lists, CMake option, namespace tags, and the
  writer/format pages describe the default and the opt-in.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-10-02 08:45:32 +02:00

61 lines
1.4 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 "config.hpp"
#define NLOHMANN_JSON_NAMESPACE_NO_VERSION 1
#include <nlohmann/json_fwd.hpp>
TEST_CASE("default namespace without version component")
{
// GCC 4.8 fails with regex_error
#if !DOCTEST_GCC || DOCTEST_GCC >= DOCTEST_COMPILER(4, 9, 0)
SECTION("namespace matches expectation")
{
std::string expected = "nlohmann::json_abi";
#if JSON_DIAGNOSTICS
expected += "_diag";
#endif
#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
expected += "_ldvcmp";
#endif
#if JSON_DIAGNOSTIC_POSITIONS
expected += "_dp";
#endif
#if JSON_BRACE_INIT_COPY_SEMANTICS
expected += "_bics";
#endif
#if JSON_PRECISE_STREAM_POSITION
expected += "_psp";
#endif
#if JSON_STRICT_NUL_HANDLING
expected += "_snul";
#endif
#if JSON_STRICT_BINARY_UTF8
expected += "_sbu8";
#endif
expected += "::basic_json";
// fallback for Clang
const std::string ns{STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json"};
CHECK(namespace_name<nlohmann::json>(ns) == expected);
}
#endif
}