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diff --git a/json4cpp/tests/src/unit-bson.cpp b/json4cpp/tests/src/unit-bson.cpp
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+// __ _____ _____ _____
+// __| | __| | | | 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;
+
+#include <fstream>
+#include <limits>
+#include <sstream>
+#include "make_test_data_available.hpp"
+#include "test_utils.hpp"
+
+TEST_CASE("BSON")
+{
+ SECTION("individual values not supported")
+ {
+ SECTION("null")
+ {
+ json const j = nullptr;
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is null", json::type_error&);
+ }
+
+ SECTION("boolean")
+ {
+ SECTION("true")
+ {
+ json const j = true;
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is boolean", json::type_error&);
+ }
+
+ SECTION("false")
+ {
+ json const j = false;
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is boolean", json::type_error&);
+ }
+ }
+
+ SECTION("number")
+ {
+ json const j = 42;
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is number", json::type_error&);
+ }
+
+ SECTION("float")
+ {
+ json const j = 4.2;
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is number", json::type_error&);
+ }
+
+ SECTION("string")
+ {
+ json const j = "not supported";
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is string", json::type_error&);
+ }
+
+ SECTION("array")
+ {
+ json const j = std::vector<int> {1, 2, 3, 4, 5, 6, 7};
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is array", json::type_error&);
+ }
+ }
+
+ SECTION("keys containing code-point U+0000 cannot be serialized to BSON")
+ {
+ json const j =
+ {
+ { std::string("en\0try", 6), true }
+ };
+#if JSON_DIAGNOSTICS
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.out_of_range.409] (/en) BSON key cannot contain code point U+0000 (at byte 2)", json::out_of_range&);
+#else
+ CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.out_of_range.409] BSON key cannot contain code point U+0000 (at byte 2)", json::out_of_range&);
+#endif
+ }
+
+ SECTION("string length must be at least 1")
+ {
+ // from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11175
+ std::vector<std::uint8_t> const v =
+ {
+ 0x20, 0x20, 0x20, 0x20,
+ 0x02,
+ 0x00,
+ 0x00, 0x00, 0x00, 0x80
+ };
+ json _;
+ CHECK_THROWS_WITH_AS(_ = json::from_bson(v), "[json.exception.parse_error.112] parse error at byte 10: syntax error while parsing BSON string: string length must be at least 1, is -2147483648", json::parse_error&);
+ }
+
+ SECTION("objects")
+ {
+ SECTION("empty object")
+ {
+ json const j = json::object();
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x05, 0x00, 0x00, 0x00, // size (little endian)
+ // no entries
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with bool")
+ {
+ json const j =
+ {
+ { "entry", true }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x0D, 0x00, 0x00, 0x00, // size (little endian)
+ 0x08, // entry: boolean
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x01, // value = true
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with bool")
+ {
+ json const j =
+ {
+ { "entry", false }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x0D, 0x00, 0x00, 0x00, // size (little endian)
+ 0x08, // entry: boolean
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x00, // value = false
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with double")
+ {
+ json const j =
+ {
+ { "entry", 4.2 }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x14, 0x00, 0x00, 0x00, // size (little endian)
+ 0x01, /// entry: double
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0xcd, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x10, 0x40,
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with string")
+ {
+ json const j =
+ {
+ { "entry", "bsonstr" }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x18, 0x00, 0x00, 0x00, // size (little endian)
+ 0x02, /// entry: string (UTF-8)
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x08, 0x00, 0x00, 0x00, 'b', 's', 'o', 'n', 's', 't', 'r', '\x00',
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with null member")
+ {
+ json const j =
+ {
+ { "entry", nullptr }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x0C, 0x00, 0x00, 0x00, // size (little endian)
+ 0x0A, /// entry: null
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with integer (32-bit) member")
+ {
+ json const j =
+ {
+ { "entry", std::int32_t{0x12345678} }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x10, 0x00, 0x00, 0x00, // size (little endian)
+ 0x10, /// entry: int32
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x78, 0x56, 0x34, 0x12,
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with integer (64-bit) member")
+ {
+ json const j =
+ {
+ { "entry", std::int64_t{0x1234567804030201} }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x14, 0x00, 0x00, 0x00, // size (little endian)
+ 0x12, /// entry: int64
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x01, 0x02, 0x03, 0x04, 0x78, 0x56, 0x34, 0x12,
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with negative integer (32-bit) member")
+ {
+ json const j =
+ {
+ { "entry", std::int32_t{-1} }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x10, 0x00, 0x00, 0x00, // size (little endian)
+ 0x10, /// entry: int32
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0xFF, 0xFF, 0xFF, 0xFF,
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with negative integer (64-bit) member")
+ {
+ json const j =
+ {
+ { "entry", std::int64_t{-1} }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x10, 0x00, 0x00, 0x00, // size (little endian)
+ 0x10, /// entry: int32
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0xFF, 0xFF, 0xFF, 0xFF,
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with unsigned integer (64-bit) member")
+ {
+ json const j =
+ {
+ { "entry", std::uint64_t{0x1234567804030201} }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x14, 0x00, 0x00, 0x00, // size (little endian)
+ 0x12, /// entry: int64
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x01, 0x02, 0x03, 0x04, 0x78, 0x56, 0x34, 0x12,
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with small unsigned integer member")
+ {
+ json const j =
+ {
+ { "entry", std::uint64_t{0x42} }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x10, 0x00, 0x00, 0x00, // size (little endian)
+ 0x10, /// entry: int32
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x42, 0x00, 0x00, 0x00,
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with object member")
+ {
+ json const j =
+ {
+ { "entry", json::object() }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x11, 0x00, 0x00, 0x00, // size (little endian)
+ 0x03, /// entry: embedded document
+ 'e', 'n', 't', 'r', 'y', '\x00',
+
+ 0x05, 0x00, 0x00, 0x00, // size (little endian)
+ // no entries
+ 0x00, // end marker (embedded document)
+
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with array member")
+ {
+ json const j =
+ {
+ { "entry", json::array() }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x11, 0x00, 0x00, 0x00, // size (little endian)
+ 0x04, /// entry: embedded document
+ 'e', 'n', 't', 'r', 'y', '\x00',
+
+ 0x05, 0x00, 0x00, 0x00, // size (little endian)
+ // no entries
+ 0x00, // end marker (embedded document)
+
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with non-empty array member")
+ {
+ json const j =
+ {
+ { "entry", json::array({1, 2, 3, 4, 5, 6, 7, 8}) }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x49, 0x00, 0x00, 0x00, // size (little endian)
+ 0x04, /// entry: embedded document
+ 'e', 'n', 't', 'r', 'y', '\x00',
+
+ 0x3D, 0x00, 0x00, 0x00, // size (little endian)
+ 0x10, '0', 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0x10, '1', 0x00, 0x02, 0x00, 0x00, 0x00,
+ 0x10, '2', 0x00, 0x03, 0x00, 0x00, 0x00,
+ 0x10, '3', 0x00, 0x04, 0x00, 0x00, 0x00,
+ 0x10, '4', 0x00, 0x05, 0x00, 0x00, 0x00,
+ 0x10, '5', 0x00, 0x06, 0x00, 0x00, 0x00,
+ 0x10, '6', 0x00, 0x07, 0x00, 0x00, 0x00,
+ 0x10, '7', 0x00, 0x08, 0x00, 0x00, 0x00,
+ 0x00, // end marker (embedded document)
+
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with binary member")
+ {
+ const size_t N = 10;
+ const auto s = std::vector<std::uint8_t>(N, 'x');
+ json const j =
+ {
+ { "entry", json::binary(s, 0) }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x1B, 0x00, 0x00, 0x00, // size (little endian)
+ 0x05, // entry: binary
+ 'e', 'n', 't', 'r', 'y', '\x00',
+
+ 0x0A, 0x00, 0x00, 0x00, // size of binary (little endian)
+ 0x00, // Generic binary subtype
+ 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78,
+
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("non-empty object with binary member with subtype")
+ {
+ // an MD5 hash
+ const std::vector<std::uint8_t> md5hash = {0xd7, 0x7e, 0x27, 0x54, 0xbe, 0x12, 0x37, 0xfe, 0xd6, 0x0c, 0x33, 0x98, 0x30, 0x3b, 0x8d, 0xc4};
+ json const j =
+ {
+ { "entry", json::binary(md5hash, 5) }
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ 0x21, 0x00, 0x00, 0x00, // size (little endian)
+ 0x05, // entry: binary
+ 'e', 'n', 't', 'r', 'y', '\x00',
+
+ 0x10, 0x00, 0x00, 0x00, // size of binary (little endian)
+ 0x05, // MD5 binary subtype
+ 0xd7, 0x7e, 0x27, 0x54, 0xbe, 0x12, 0x37, 0xfe, 0xd6, 0x0c, 0x33, 0x98, 0x30, 0x3b, 0x8d, 0xc4,
+
+ 0x00 // end marker
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+
+ SECTION("Some more complex document")
+ {
+ json const j =
+ {
+ {"double", 42.5},
+ {"entry", 4.2},
+ {"number", 12345},
+ {"object", {{ "string", "value" }}}
+ };
+
+ std::vector<std::uint8_t> const expected =
+ {
+ /*size */ 0x4f, 0x00, 0x00, 0x00,
+ /*entry*/ 0x01, 'd', 'o', 'u', 'b', 'l', 'e', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x45, 0x40,
+ /*entry*/ 0x01, 'e', 'n', 't', 'r', 'y', 0x00, 0xcd, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x10, 0x40,
+ /*entry*/ 0x10, 'n', 'u', 'm', 'b', 'e', 'r', 0x00, 0x39, 0x30, 0x00, 0x00,
+ /*entry*/ 0x03, 'o', 'b', 'j', 'e', 'c', 't', 0x00,
+ /*entry: obj-size */ 0x17, 0x00, 0x00, 0x00,
+ /*entry: obj-entry*/0x02, 's', 't', 'r', 'i', 'n', 'g', 0x00, 0x06, 0x00, 0x00, 0x00, 'v', 'a', 'l', 'u', 'e', 0,
+ /*entry: obj-term.*/0x00,
+ /*obj-term*/ 0x00
+ };
+
+ const auto result = json::to_bson(j);
+ CHECK(result == expected);
+
+ // roundtrip
+ CHECK(json::from_bson(result) == j);
+ CHECK(json::from_bson(result, true, false) == j);
+ }
+ }
+
+ SECTION("Examples from https://bsonspec.org/faq.html")
+ {
+ SECTION("Example 1")
+ {
+ std::vector<std::uint8_t> input = {0x16, 0x00, 0x00, 0x00, 0x02, 'h', 'e', 'l', 'l', 'o', 0x00, 0x06, 0x00, 0x00, 0x00, 'w', 'o', 'r', 'l', 'd', 0x00, 0x00};
+ const json parsed = json::from_bson(input);
+ const json expected = {{"hello", "world"}};
+ CHECK(parsed == expected);
+ const auto dumped = json::to_bson(parsed);
+ CHECK(dumped == input);
+ CHECK(json::from_bson(dumped) == expected);
+ }
+
+ SECTION("Example 2")
+ {
+ std::vector<std::uint8_t> input = {0x31, 0x00, 0x00, 0x00, 0x04, 'B', 'S', 'O', 'N', 0x00, 0x26, 0x00, 0x00, 0x00, 0x02, 0x30, 0x00, 0x08, 0x00, 0x00, 0x00, 'a', 'w', 'e', 's', 'o', 'm', 'e', 0x00, 0x01, 0x31, 0x00, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x14, 0x40, 0x10, 0x32, 0x00, 0xc2, 0x07, 0x00, 0x00, 0x00, 0x00};
+ const json parsed = json::from_bson(input);
+ const json expected = {{"BSON", {"awesome", 5.05, 1986}}};
+ CHECK(parsed == expected);
+ const auto dumped = json::to_bson(parsed);
+ CHECK(dumped == input);
+ CHECK(json::from_bson(dumped) == expected);
+ }
+ }
+}
+
+TEST_CASE("BSON input/output_adapters")
+{
+ const json json_representation =
+ {
+ {"double", 42.5},
+ {"entry", 4.2},
+ {"number", 12345},
+ {"object", {{ "string", "value" }}}
+ };
+
+ const std::vector<std::uint8_t> bson_representation =
+ {
+ /*size */ 0x4f, 0x00, 0x00, 0x00,
+ /*entry*/ 0x01, 'd', 'o', 'u', 'b', 'l', 'e', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x45, 0x40,
+ /*entry*/ 0x01, 'e', 'n', 't', 'r', 'y', 0x00, 0xcd, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x10, 0x40,
+ /*entry*/ 0x10, 'n', 'u', 'm', 'b', 'e', 'r', 0x00, 0x39, 0x30, 0x00, 0x00,
+ /*entry*/ 0x03, 'o', 'b', 'j', 'e', 'c', 't', 0x00,
+ /*entry: obj-size */ 0x17, 0x00, 0x00, 0x00,
+ /*entry: obj-entry*/0x02, 's', 't', 'r', 'i', 'n', 'g', 0x00, 0x06, 0x00, 0x00, 0x00, 'v', 'a', 'l', 'u', 'e', 0,
+ /*entry: obj-term.*/0x00,
+ /*obj-term*/ 0x00
+ };
+
+ json j2;
+ CHECK_NOTHROW(j2 = json::from_bson(bson_representation));
+
+ // compare parsed JSON values
+ CHECK(json_representation == j2);
+
+ SECTION("roundtrips")
+ {
+ SECTION("std::ostringstream")
+ {
+ std::basic_ostringstream<char> ss;
+ json::to_bson(json_representation, ss);
+ const json j3 = json::from_bson(ss.str());
+ CHECK(json_representation == j3);
+ }
+
+ SECTION("std::string")
+ {
+ std::string s;
+ json::to_bson(json_representation, s);
+ const json j3 = json::from_bson(s);
+ CHECK(json_representation == j3);
+ }
+
+ SECTION("std::vector")
+ {
+ std::vector<std::uint8_t> v;
+ json::to_bson(json_representation, v);
+ const json j3 = json::from_bson(v);
+ CHECK(json_representation == j3);
+ }
+ }
+}
+
+namespace
+{
+class SaxCountdown
+{
+ public:
+ explicit SaxCountdown(const int count) : events_left(count)
+ {}
+
+ bool null()
+ {
+ return events_left-- > 0;
+ }
+
+ bool boolean(bool /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool number_integer(json::number_integer_t /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool number_unsigned(json::number_unsigned_t /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool number_float(json::number_float_t /*unused*/, const std::string& /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool string(std::string& /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool binary(std::vector<std::uint8_t>& /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool start_object(std::size_t /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool key(std::string& /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool end_object()
+ {
+ return events_left-- > 0;
+ }
+
+ bool start_array(std::size_t /*unused*/)
+ {
+ return events_left-- > 0;
+ }
+
+ bool end_array()
+ {
+ return events_left-- > 0;
+ }
+
+ bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const json::exception& /*unused*/) // NOLINT(readability-convert-member-functions-to-static)
+ {
+ return false;
+ }
+
+ private:
+ int events_left = 0;
+};
+} // namespace
+
+TEST_CASE("Incomplete BSON Input")
+{
+ SECTION("Incomplete BSON Input 1")
+ {
+ std::vector<std::uint8_t> const incomplete_bson =
+ {
+ 0x0D, 0x00, 0x00, 0x00, // size (little endian)
+ 0x08, // entry: boolean
+ 'e', 'n', 't' // unexpected EOF
+ };
+
+ json _;
+ CHECK_THROWS_WITH_AS(_ = json::from_bson(incomplete_bson), "[json.exception.parse_error.110] parse error at byte 9: syntax error while parsing BSON cstring: unexpected end of input", json::parse_error&);
+
+ CHECK(json::from_bson(incomplete_bson, true, false).is_discarded());
+
+ SaxCountdown scp(0);
+ CHECK(!json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson));
+ }
+
+ SECTION("Incomplete BSON Input 2")
+ {
+ std::vector<std::uint8_t> const incomplete_bson =
+ {
+ 0x0D, 0x00, 0x00, 0x00, // size (little endian)
+ 0x08, // entry: boolean, unexpected EOF
+ };
+
+ json _;
+ CHECK_THROWS_WITH_AS(_ = json::from_bson(incomplete_bson), "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing BSON cstring: unexpected end of input", json::parse_error&);
+ CHECK(json::from_bson(incomplete_bson, true, false).is_discarded());
+
+ SaxCountdown scp(0);
+ CHECK(!json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson));
+ }
+
+ SECTION("Incomplete BSON Input 3")
+ {
+ std::vector<std::uint8_t> const incomplete_bson =
+ {
+ 0x41, 0x00, 0x00, 0x00, // size (little endian)
+ 0x04, /// entry: embedded document
+ 'e', 'n', 't', 'r', 'y', '\x00',
+
+ 0x35, 0x00, 0x00, 0x00, // size (little endian)
+ 0x10, 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0x10, 0x00, 0x02, 0x00, 0x00, 0x00
+ // missing input data...
+ };
+
+ json _;
+ CHECK_THROWS_WITH_AS(_ = json::from_bson(incomplete_bson), "[json.exception.parse_error.110] parse error at byte 28: syntax error while parsing BSON element list: unexpected end of input", json::parse_error&);
+ CHECK(json::from_bson(incomplete_bson, true, false).is_discarded());
+
+ SaxCountdown scp(1);
+ CHECK(!json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson));
+ }
+
+ SECTION("Incomplete BSON Input 4")
+ {
+ std::vector<std::uint8_t> const incomplete_bson =
+ {
+ 0x0D, 0x00, // size (incomplete), unexpected EOF
+ };
+
+ json _;
+ CHECK_THROWS_WITH_AS(_ = json::from_bson(incomplete_bson), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing BSON number: unexpected end of input", json::parse_error&);
+ CHECK(json::from_bson(incomplete_bson, true, false).is_discarded());
+
+ SaxCountdown scp(0);
+ CHECK(!json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson));
+ }
+
+ SECTION("Improve coverage")
+ {
+ SECTION("key")
+ {
+ json const j = {{"key", "value"}};
+ auto bson_vec = json::to_bson(j);
+ SaxCountdown scp(2);
+ CHECK(!json::sax_parse(bson_vec, &scp, json::input_format_t::bson));
+ }
+
+ SECTION("array")
+ {
+ json const j =
+ {
+ { "entry", json::array() }
+ };
+ auto bson_vec = json::to_bson(j);
+ SaxCountdown scp(2);
+ CHECK(!json::sax_parse(bson_vec, &scp, json::input_format_t::bson));
+ }
+ }
+}
+
+TEST_CASE("Negative size of binary value")
+{
+ // invalid BSON: the size of the binary value is -1
+ std::vector<std::uint8_t> const input =
+ {
+ 0x21, 0x00, 0x00, 0x00, // size (little endian)
+ 0x05, // entry: binary
+ 'e', 'n', 't', 'r', 'y', '\x00',
+
+ 0xFF, 0xFF, 0xFF, 0xFF, // size of binary (little endian)
+ 0x05, // MD5 binary subtype
+ 0xd7, 0x7e, 0x27, 0x54, 0xbe, 0x12, 0x37, 0xfe, 0xd6, 0x0c, 0x33, 0x98, 0x30, 0x3b, 0x8d, 0xc4,
+
+ 0x00 // end marker
+ };
+ json _;
+ CHECK_THROWS_WITH_AS(_ = json::from_bson(input), "[json.exception.parse_error.112] parse error at byte 15: syntax error while parsing BSON binary: byte array length cannot be negative, is -1", json::parse_error);
+}
+
+TEST_CASE("Unsupported BSON input")
+{
+ std::vector<std::uint8_t> const bson =
+ {
+ 0x0C, 0x00, 0x00, 0x00, // size (little endian)
+ 0xFF, // entry type: Min key (not supported yet)
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ 0x00 // end marker
+ };
+
+ json _;
+ CHECK_THROWS_WITH_AS(_ = json::from_bson(bson), "[json.exception.parse_error.114] parse error at byte 5: Unsupported BSON record type 0xFF", json::parse_error&);
+ CHECK(json::from_bson(bson, true, false).is_discarded());
+
+ SaxCountdown scp(0);
+ CHECK(!json::sax_parse(bson, &scp, json::input_format_t::bson));
+}
+
+TEST_CASE("BSON numerical data")
+{
+ SECTION("number")
+ {
+ SECTION("signed")
+ {
+ SECTION("std::int64_t: INT64_MIN .. INT32_MIN-1")
+ {
+ std::vector<int64_t> const numbers
+ {
+ (std::numeric_limits<int64_t>::min)(),
+ -1000000000000000000LL,
+ -100000000000000000LL,
+ -10000000000000000LL,
+ -1000000000000000LL,
+ -100000000000000LL,
+ -10000000000000LL,
+ -1000000000000LL,
+ -100000000000LL,
+ -10000000000LL,
+ static_cast<std::int64_t>((std::numeric_limits<std::int32_t>::min)()) - 1,
+ };
+
+ for (const auto i : numbers)
+ {
+
+ CAPTURE(i)
+
+ json const j =
+ {
+ { "entry", i }
+ };
+ CHECK(j.at("entry").is_number_integer());
+
+ std::uint64_t const iu = *reinterpret_cast<const std::uint64_t*>(&i);
+ std::vector<std::uint8_t> const expected_bson =
+ {
+ 0x14u, 0x00u, 0x00u, 0x00u, // size (little endian)
+ 0x12u, /// entry: int64
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 4u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 5u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 6u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 7u)) & 0xffu),
+ 0x00u // end marker
+ };
+
+ const auto bson = json::to_bson(j);
+ CHECK(bson == expected_bson);
+
+ auto j_roundtrip = json::from_bson(bson);
+
+ CHECK(j_roundtrip.at("entry").is_number_integer());
+ CHECK(j_roundtrip == j);
+ CHECK(json::from_bson(bson, true, false) == j);
+
+ }
+ }
+
+ SECTION("signed std::int32_t: INT32_MIN .. INT32_MAX")
+ {
+ std::vector<int32_t> const numbers
+ {
+ (std::numeric_limits<int32_t>::min)(),
+ -2147483647L,
+ -1000000000L,
+ -100000000L,
+ -10000000L,
+ -1000000L,
+ -100000L,
+ -10000L,
+ -1000L,
+ -100L,
+ -10L,
+ -1L,
+ 0L,
+ 1L,
+ 10L,
+ 100L,
+ 1000L,
+ 10000L,
+ 100000L,
+ 1000000L,
+ 10000000L,
+ 100000000L,
+ 1000000000L,
+ 2147483646L,
+ (std::numeric_limits<int32_t>::max)()
+ };
+
+ for (const auto i : numbers)
+ {
+
+ CAPTURE(i)
+
+ json const j =
+ {
+ { "entry", i }
+ };
+ CHECK(j.at("entry").is_number_integer());
+
+ std::uint32_t const iu = *reinterpret_cast<const std::uint32_t*>(&i);
+ std::vector<std::uint8_t> const expected_bson =
+ {
+ 0x10u, 0x00u, 0x00u, 0x00u, // size (little endian)
+ 0x10u, /// entry: int32
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+ 0x00u // end marker
+ };
+
+ const auto bson = json::to_bson(j);
+ CHECK(bson == expected_bson);
+
+ auto j_roundtrip = json::from_bson(bson);
+
+ CHECK(j_roundtrip.at("entry").is_number_integer());
+ CHECK(j_roundtrip == j);
+ CHECK(json::from_bson(bson, true, false) == j);
+
+ }
+ }
+
+ SECTION("signed std::int64_t: INT32_MAX+1 .. INT64_MAX")
+ {
+ std::vector<int64_t> const numbers
+ {
+ (std::numeric_limits<int64_t>::max)(),
+ 1000000000000000000LL,
+ 100000000000000000LL,
+ 10000000000000000LL,
+ 1000000000000000LL,
+ 100000000000000LL,
+ 10000000000000LL,
+ 1000000000000LL,
+ 100000000000LL,
+ 10000000000LL,
+ static_cast<std::int64_t>((std::numeric_limits<int32_t>::max)()) + 1,
+ };
+
+ for (const auto i : numbers)
+ {
+
+ CAPTURE(i)
+
+ json const j =
+ {
+ { "entry", i }
+ };
+ CHECK(j.at("entry").is_number_integer());
+
+ std::uint64_t const iu = *reinterpret_cast<const std::uint64_t*>(&i);
+ std::vector<std::uint8_t> const expected_bson =
+ {
+ 0x14u, 0x00u, 0x00u, 0x00u, // size (little endian)
+ 0x12u, /// entry: int64
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 4u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 5u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 6u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 7u)) & 0xffu),
+ 0x00u // end marker
+ };
+
+ const auto bson = json::to_bson(j);
+ CHECK(bson == expected_bson);
+
+ auto j_roundtrip = json::from_bson(bson);
+
+ CHECK(j_roundtrip.at("entry").is_number_integer());
+ CHECK(j_roundtrip == j);
+ CHECK(json::from_bson(bson, true, false) == j);
+
+ }
+ }
+ }
+
+ SECTION("unsigned")
+ {
+ SECTION("unsigned std::uint64_t: 0 .. INT32_MAX")
+ {
+ std::vector<std::uint64_t> const numbers
+ {
+ 0ULL,
+ 1ULL,
+ 10ULL,
+ 100ULL,
+ 1000ULL,
+ 10000ULL,
+ 100000ULL,
+ 1000000ULL,
+ 10000000ULL,
+ 100000000ULL,
+ 1000000000ULL,
+ 2147483646ULL,
+ static_cast<std::uint64_t>((std::numeric_limits<int32_t>::max)())
+ };
+
+ for (const auto i : numbers)
+ {
+
+ CAPTURE(i)
+
+ json const j =
+ {
+ { "entry", i }
+ };
+
+ auto iu = i;
+ std::vector<std::uint8_t> const expected_bson =
+ {
+ 0x10u, 0x00u, 0x00u, 0x00u, // size (little endian)
+ 0x10u, /// entry: int32
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+ 0x00u // end marker
+ };
+
+ const auto bson = json::to_bson(j);
+ CHECK(bson == expected_bson);
+
+ auto j_roundtrip = json::from_bson(bson);
+
+ CHECK(j.at("entry").is_number_unsigned());
+ CHECK(j_roundtrip.at("entry").is_number_integer());
+ CHECK(j_roundtrip == j);
+ CHECK(json::from_bson(bson, true, false) == j);
+
+ }
+ }
+
+ SECTION("unsigned std::uint64_t: INT32_MAX+1 .. INT64_MAX")
+ {
+ std::vector<std::uint64_t> const numbers
+ {
+ static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()) + 1,
+ 4000000000ULL,
+ static_cast<std::uint64_t>((std::numeric_limits<std::uint32_t>::max)()),
+ 10000000000ULL,
+ 100000000000ULL,
+ 1000000000000ULL,
+ 10000000000000ULL,
+ 100000000000000ULL,
+ 1000000000000000ULL,
+ 10000000000000000ULL,
+ 100000000000000000ULL,
+ 1000000000000000000ULL,
+ static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()),
+ };
+
+ for (const auto i : numbers)
+ {
+
+ CAPTURE(i)
+
+ json const j =
+ {
+ { "entry", i }
+ };
+
+ auto iu = i;
+ std::vector<std::uint8_t> const expected_bson =
+ {
+ 0x14u, 0x00u, 0x00u, 0x00u, // size (little endian)
+ 0x12u, /// entry: int64
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 4u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 5u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 6u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 7u)) & 0xffu),
+ 0x00u // end marker
+ };
+
+ const auto bson = json::to_bson(j);
+ CHECK(bson == expected_bson);
+
+ auto j_roundtrip = json::from_bson(bson);
+
+ CHECK(j.at("entry").is_number_unsigned());
+ CHECK(j_roundtrip.at("entry").is_number_integer());
+ CHECK(j_roundtrip == j);
+ CHECK(json::from_bson(bson, true, false) == j);
+ }
+ }
+
+ SECTION("unsigned std::uint64_t: INT64_MAX+1 .. UINT64_MAX")
+ {
+ std::vector<std::uint64_t> const numbers
+ {
+ static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()) + 1ULL,
+ 0xffffffffffffffff,
+ };
+
+ for (const auto i : numbers)
+ {
+
+ CAPTURE(i)
+
+ json const j =
+ {
+ { "entry", i }
+ };
+
+ auto iu = i;
+ std::vector<std::uint8_t> const expected_bson =
+ {
+ 0x14u, 0x00u, 0x00u, 0x00u, // size (little endian)
+ 0x11u, /// entry: uint64
+ 'e', 'n', 't', 'r', 'y', '\x00',
+ static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 4u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 5u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 6u)) & 0xffu),
+ static_cast<std::uint8_t>((iu >> (8u * 7u)) & 0xffu),
+ 0x00u // end marker
+ };
+
+ const auto bson = json::to_bson(j);
+ CHECK(bson == expected_bson);
+
+ auto j_roundtrip = json::from_bson(bson);
+
+ CHECK(j.at("entry").is_number_unsigned());
+ CHECK(j_roundtrip.at("entry").is_number_unsigned());
+ CHECK(j_roundtrip == j);
+ CHECK(json::from_bson(bson, true, false) == j);
+ }
+ }
+
+ }
+ }
+}
+
+TEST_CASE("BSON roundtrips" * doctest::skip())
+{
+ SECTION("reference files")
+ {
+ for (const std::string filename :
+ {
+ 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"
+ })
+ {
+ CAPTURE(filename)
+
+ {
+ INFO_WITH_TEMP(filename + ": std::vector<std::uint8_t>");
+ // parse JSON file
+ std::ifstream f_json(filename);
+ const json j1 = json::parse(f_json);
+
+ // parse BSON file
+ auto packed = utils::read_binary_file(filename + ".bson");
+ json j2;
+ CHECK_NOTHROW(j2 = json::from_bson(packed));
+
+ // compare parsed JSON values
+ CHECK(j1 == j2);
+ }
+
+ {
+ INFO_WITH_TEMP(filename + ": std::ifstream");
+ // parse JSON file
+ std::ifstream f_json(filename);
+ const json j1 = json::parse(f_json);
+
+ // parse BSON file
+ std::ifstream f_bson(filename + ".bson", std::ios::binary);
+ json j2;
+ CHECK_NOTHROW(j2 = json::from_bson(f_bson));
+
+ // compare parsed JSON values
+ CHECK(j1 == j2);
+ }
+
+ {
+ INFO_WITH_TEMP(filename + ": uint8_t* and size");
+ // parse JSON file
+ std::ifstream f_json(filename);
+ const json j1 = json::parse(f_json);
+
+ // parse BSON file
+ auto packed = utils::read_binary_file(filename + ".bson");
+ json j2;
+ CHECK_NOTHROW(j2 = json::from_bson({packed.data(), packed.size()}));
+
+ // compare parsed JSON values
+ CHECK(j1 == j2);
+ }
+
+ {
+ INFO_WITH_TEMP(filename + ": output to output adapters");
+ // parse JSON file
+ std::ifstream f_json(filename);
+ json const j1 = json::parse(f_json);
+
+ // parse BSON file
+ auto packed = utils::read_binary_file(filename + ".bson");
+
+ {
+ INFO_WITH_TEMP(filename + ": output adapters: std::vector<std::uint8_t>");
+ std::vector<std::uint8_t> vec;
+ json::to_bson(j1, vec);
+
+ if (vec != packed)
+ {
+ // the exact serializations may differ due to the order of
+ // object keys; in these cases, just compare whether both
+ // serializations create the same JSON value
+ CHECK(json::from_bson(vec) == json::from_bson(packed));
+ }
+ }
+ }
+ }
+ }
+}
generated by cgit 0.0.5-2-1-g0f52 (git 2.46.0) at 2026-04-05 23:53:06 +0000