/* __ _____ _____ _____ __| | __| | | | JSON for Modern C++ (test suite) | | |__ | | | | | | version 3.6.1 |_____|_____|_____|_|___| https://github.com/nlohmann/json Licensed under the MIT License . SPDX-License-Identifier: MIT Copyright (c) 2013-2019 Niels Lohmann . Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "catch.hpp" #include using nlohmann::json; #include TEST_CASE("BSON") { SECTION("individual values not supported") { SECTION("null") { json j = nullptr; CHECK_THROWS_AS(json::to_bson(j), json::type_error&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is null"); } SECTION("boolean") { SECTION("true") { json j = true; CHECK_THROWS_AS(json::to_bson(j), json::type_error&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is boolean"); } SECTION("false") { json j = false; CHECK_THROWS_AS(json::to_bson(j), json::type_error&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is boolean"); } } SECTION("number") { json j = 42; CHECK_THROWS_AS(json::to_bson(j), json::type_error&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is number"); } SECTION("float") { json j = 4.2; CHECK_THROWS_AS(json::to_bson(j), json::type_error&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is number"); } SECTION("string") { json j = "not supported"; CHECK_THROWS_AS(json::to_bson(j), json::type_error&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is string"); } SECTION("array") { json j = std::vector {1, 2, 3, 4, 5, 6, 7}; CHECK_THROWS_AS(json::to_bson(j), json::type_error&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is array"); } } SECTION("keys containing code-point U+0000 cannot be serialized to BSON") { json j = { { std::string("en\0try", 6), true } }; CHECK_THROWS_AS(json::to_bson(j), json::out_of_range&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.out_of_range.409] BSON key cannot contain code point U+0000 (at byte 2)"); } SECTION("string length must be at least 1") { // from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11175 std::vector v = { 0x20, 0x20, 0x20, 0x20, 0x02, 0x00, 0x00, 0x00, 0x00, 0x80 }; CHECK_THROWS_AS(json::from_bson(v), json::parse_error&); CHECK_THROWS_WITH(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"); } SECTION("objects") { SECTION("empty object") { json j = json::object(); std::vector 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 j = { { "entry", true } }; std::vector 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 j = { { "entry", false } }; std::vector 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 j = { { "entry", 4.2 } }; std::vector 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 j = { { "entry", "bsonstr" } }; std::vector 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 j = { { "entry", nullptr } }; std::vector 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 j = { { "entry", std::int32_t{0x12345678} } }; std::vector 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 j = { { "entry", std::int64_t{0x1234567804030201} } }; std::vector 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 j = { { "entry", std::int32_t{-1} } }; std::vector 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 j = { { "entry", std::int64_t{-1} } }; std::vector 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") { // directly encoding uint64 is not supported in bson (only for timestamp values) json j = { { "entry", std::uint64_t{0x1234567804030201} } }; std::vector 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 j = { { "entry", std::uint64_t{0x42} } }; std::vector 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 j = { { "entry", json::object() } }; std::vector 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 j = { { "entry", json::array() } }; std::vector 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 j = { { "entry", json::array({1, 2, 3, 4, 5, 6, 7, 8}) } }; std::vector 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("Some more complex document") { // directly encoding uint64 is not supported in bson (only for timestamp values) json j = { {"double", 42.5}, {"entry", 4.2}, {"number", 12345}, {"object", {{ "string", "value" }}} }; std::vector 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 http://bsonspec.org/faq.html") { SECTION("Example 1") { std::vector input = {0x16, 0x00, 0x00, 0x00, 0x02, 'h', 'e', 'l', 'l', 'o', 0x00, 0x06, 0x00, 0x00, 0x00, 'w', 'o', 'r', 'l', 'd', 0x00, 0x00}; json parsed = json::from_bson(input); json expected = {{"hello", "world"}}; CHECK(parsed == expected); auto dumped = json::to_bson(parsed); CHECK(dumped == input); CHECK(json::from_bson(dumped) == expected); } SECTION("Example 2") { std::vector 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}; json parsed = json::from_bson(input); json expected = {{"BSON", {"awesome", 5.05, 1986}}}; CHECK(parsed == expected); auto dumped = json::to_bson(parsed); CHECK(dumped == input); CHECK(json::from_bson(dumped) == expected); } } } TEST_CASE("BSON input/output_adapters") { json json_representation = { {"double", 42.5}, {"entry", 4.2}, {"number", 12345}, {"object", {{ "string", "value" }}} }; std::vector 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::ostringstream ss; json::to_bson(json_representation, ss); std::istringstream iss(ss.str()); json j3 = json::from_bson(iss); CHECK(json_representation == j3); } SECTION("std::string") { std::string s; json::to_bson(json_representation, s); json j3 = json::from_bson(s); CHECK(json_representation == j3); } SECTION("std::vector") { std::vector v; json::to_bson(json_representation, v); json j3 = json::from_bson(v); CHECK(json_representation == j3); } } } class SaxCountdown { public: explicit SaxCountdown(const int count) : events_left(count) {} bool null() { return events_left-- > 0; } bool boolean(bool) { return events_left-- > 0; } bool number_integer(json::number_integer_t) { return events_left-- > 0; } bool number_unsigned(json::number_unsigned_t) { return events_left-- > 0; } bool number_float(json::number_float_t, const std::string&) { return events_left-- > 0; } bool string(std::string&) { return events_left-- > 0; } bool start_object(std::size_t) { return events_left-- > 0; } bool key(std::string&) { return events_left-- > 0; } bool end_object() { return events_left-- > 0; } bool start_array(std::size_t) { return events_left-- > 0; } bool end_array() { return events_left-- > 0; } bool parse_error(std::size_t, const std::string&, const json::exception&) { return false; } private: int events_left = 0; }; TEST_CASE("Incomplete BSON Input") { SECTION("Incomplete BSON Input 1") { std::vector incomplete_bson = { 0x0D, 0x00, 0x00, 0x00, // size (little endian) 0x08, // entry: boolean 'e', 'n', 't' // unexpected EOF }; CHECK_THROWS_AS(json::from_bson(incomplete_bson), json::parse_error&); CHECK_THROWS_WITH(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"); CHECK(json::from_bson(incomplete_bson, true, false).is_discarded()); SaxCountdown scp(0); CHECK(not json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson)); } SECTION("Incomplete BSON Input 2") { std::vector incomplete_bson = { 0x0D, 0x00, 0x00, 0x00, // size (little endian) 0x08, // entry: boolean, unexpected EOF }; CHECK_THROWS_AS(json::from_bson(incomplete_bson), json::parse_error&); CHECK_THROWS_WITH(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"); CHECK(json::from_bson(incomplete_bson, true, false).is_discarded()); SaxCountdown scp(0); CHECK(not json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson)); } SECTION("Incomplete BSON Input 3") { std::vector 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... }; CHECK_THROWS_AS(json::from_bson(incomplete_bson), json::parse_error&); CHECK_THROWS_WITH(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"); CHECK(json::from_bson(incomplete_bson, true, false).is_discarded()); SaxCountdown scp(1); CHECK(not json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson)); } SECTION("Incomplete BSON Input 4") { std::vector incomplete_bson = { 0x0D, 0x00, // size (incomplete), unexpected EOF }; CHECK_THROWS_AS(json::from_bson(incomplete_bson), json::parse_error&); CHECK_THROWS_WITH(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"); CHECK(json::from_bson(incomplete_bson, true, false).is_discarded()); SaxCountdown scp(0); CHECK(not json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson)); } SECTION("Improve coverage") { SECTION("key") { json j = {{"key", "value"}}; auto bson_vec = json::to_bson(j); SaxCountdown scp(2); CHECK(not json::sax_parse(bson_vec, &scp, json::input_format_t::bson)); } SECTION("array") { json j = { { "entry", json::array() } }; auto bson_vec = json::to_bson(j); SaxCountdown scp(2); CHECK(not json::sax_parse(bson_vec, &scp, json::input_format_t::bson)); } } } TEST_CASE("Unsupported BSON input") { std::vector 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 }; CHECK_THROWS_AS(json::from_bson(bson), json::parse_error&); CHECK_THROWS_WITH(json::from_bson(bson), "[json.exception.parse_error.114] parse error at byte 5: Unsupported BSON record type 0xFF"); CHECK(json::from_bson(bson, true, false).is_discarded()); SaxCountdown scp(0); CHECK(not 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 numbers { INT64_MIN, -1000000000000000000LL, -100000000000000000LL, -10000000000000000LL, -1000000000000000LL, -100000000000000LL, -10000000000000LL, -1000000000000LL, -100000000000LL, -10000000000LL, static_cast(INT32_MIN) - 1, }; for (auto i : numbers) { CAPTURE(i) json j = { { "entry", i } }; CHECK(j.at("entry").is_number_integer()); std::uint64_t iu = *reinterpret_cast(&i); std::vector expected_bson = { 0x14u, 0x00u, 0x00u, 0x00u, // size (little endian) 0x12u, /// entry: int64 'e', 'n', 't', 'r', 'y', '\x00', static_cast((iu >> (8u * 0u)) & 0xffu), static_cast((iu >> (8u * 1u)) & 0xffu), static_cast((iu >> (8u * 2u)) & 0xffu), static_cast((iu >> (8u * 3u)) & 0xffu), static_cast((iu >> (8u * 4u)) & 0xffu), static_cast((iu >> (8u * 5u)) & 0xffu), static_cast((iu >> (8u * 6u)) & 0xffu), static_cast((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 numbers { INT32_MIN, -2147483647L, -1000000000L, -100000000L, -10000000L, -1000000L, -100000L, -10000L, -1000L, -100L, -10L, -1L, 0L, 1L, 10L, 100L, 1000L, 10000L, 100000L, 1000000L, 10000000L, 100000000L, 1000000000L, 2147483646L, INT32_MAX }; for (auto i : numbers) { CAPTURE(i) json j = { { "entry", i } }; CHECK(j.at("entry").is_number_integer()); std::uint32_t iu = *reinterpret_cast(&i); std::vector expected_bson = { 0x10u, 0x00u, 0x00u, 0x00u, // size (little endian) 0x10u, /// entry: int32 'e', 'n', 't', 'r', 'y', '\x00', static_cast((iu >> (8u * 0u)) & 0xffu), static_cast((iu >> (8u * 1u)) & 0xffu), static_cast((iu >> (8u * 2u)) & 0xffu), static_cast((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 numbers { INT64_MAX, 1000000000000000000LL, 100000000000000000LL, 10000000000000000LL, 1000000000000000LL, 100000000000000LL, 10000000000000LL, 1000000000000LL, 100000000000LL, 10000000000LL, static_cast(INT32_MAX) + 1, }; for (auto i : numbers) { CAPTURE(i) json j = { { "entry", i } }; CHECK(j.at("entry").is_number_integer()); std::uint64_t iu = *reinterpret_cast(&i); std::vector expected_bson = { 0x14u, 0x00u, 0x00u, 0x00u, // size (little endian) 0x12u, /// entry: int64 'e', 'n', 't', 'r', 'y', '\x00', static_cast((iu >> (8u * 0u)) & 0xffu), static_cast((iu >> (8u * 1u)) & 0xffu), static_cast((iu >> (8u * 2u)) & 0xffu), static_cast((iu >> (8u * 3u)) & 0xffu), static_cast((iu >> (8u * 4u)) & 0xffu), static_cast((iu >> (8u * 5u)) & 0xffu), static_cast((iu >> (8u * 6u)) & 0xffu), static_cast((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 numbers { 0ULL, 1ULL, 10ULL, 100ULL, 1000ULL, 10000ULL, 100000ULL, 1000000ULL, 10000000ULL, 100000000ULL, 1000000000ULL, 2147483646ULL, static_cast(INT32_MAX) }; for (auto i : numbers) { CAPTURE(i) json j = { { "entry", i } }; auto iu = i; std::vector expected_bson = { 0x10u, 0x00u, 0x00u, 0x00u, // size (little endian) 0x10u, /// entry: int32 'e', 'n', 't', 'r', 'y', '\x00', static_cast((iu >> (8u * 0u)) & 0xffu), static_cast((iu >> (8u * 1u)) & 0xffu), static_cast((iu >> (8u * 2u)) & 0xffu), static_cast((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 numbers { static_cast(INT32_MAX) + 1, 4000000000ULL, static_cast(UINT32_MAX), 10000000000ULL, 100000000000ULL, 1000000000000ULL, 10000000000000ULL, 100000000000000ULL, 1000000000000000ULL, 10000000000000000ULL, 100000000000000000ULL, 1000000000000000000ULL, static_cast(INT64_MAX), }; for (auto i : numbers) { CAPTURE(i) json j = { { "entry", i } }; auto iu = i; std::vector expected_bson = { 0x14u, 0x00u, 0x00u, 0x00u, // size (little endian) 0x12u, /// entry: int64 'e', 'n', 't', 'r', 'y', '\x00', static_cast((iu >> (8u * 0u)) & 0xffu), static_cast((iu >> (8u * 1u)) & 0xffu), static_cast((iu >> (8u * 2u)) & 0xffu), static_cast((iu >> (8u * 3u)) & 0xffu), static_cast((iu >> (8u * 4u)) & 0xffu), static_cast((iu >> (8u * 5u)) & 0xffu), static_cast((iu >> (8u * 6u)) & 0xffu), static_cast((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 numbers { static_cast(INT64_MAX) + 1ULL, 10000000000000000000ULL, 18000000000000000000ULL, UINT64_MAX - 1ULL, UINT64_MAX, }; for (auto i : numbers) { CAPTURE(i) json j = { { "entry", i } }; auto iu = i; std::vector expected_bson = { 0x14u, 0x00u, 0x00u, 0x00u, // size (little endian) 0x12u, /// entry: int64 'e', 'n', 't', 'r', 'y', '\x00', static_cast((iu >> (8u * 0u)) & 0xffu), static_cast((iu >> (8u * 1u)) & 0xffu), static_cast((iu >> (8u * 2u)) & 0xffu), static_cast((iu >> (8u * 3u)) & 0xffu), static_cast((iu >> (8u * 4u)) & 0xffu), static_cast((iu >> (8u * 5u)) & 0xffu), static_cast((iu >> (8u * 6u)) & 0xffu), static_cast((iu >> (8u * 7u)) & 0xffu), 0x00u // end marker }; CHECK_THROWS_AS(json::to_bson(j), json::out_of_range&); CHECK_THROWS_WITH(json::to_bson(j), "[json.exception.out_of_range.407] integer number " + std::to_string(i) + " cannot be represented by BSON as it does not fit int64"); } } } } } TEST_CASE("BSON roundtrips", "[hide]") { SECTION("reference files") { for (std::string filename : { "test/data/json.org/1.json", "test/data/json.org/2.json", "test/data/json.org/3.json", "test/data/json.org/4.json", "test/data/json.org/5.json" }) { CAPTURE(filename) SECTION(filename + ": std::vector") { // parse JSON file std::ifstream f_json(filename); json j1 = json::parse(f_json); // parse BSON file std::ifstream f_bson(filename + ".bson", std::ios::binary); std::vector packed( (std::istreambuf_iterator(f_bson)), std::istreambuf_iterator()); json j2; CHECK_NOTHROW(j2 = json::from_bson(packed)); // compare parsed JSON values CHECK(j1 == j2); } SECTION(filename + ": std::ifstream") { // parse JSON file std::ifstream f_json(filename); 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); } SECTION(filename + ": uint8_t* and size") { // parse JSON file std::ifstream f_json(filename); json j1 = json::parse(f_json); // parse BSON file std::ifstream f_bson(filename + ".bson", std::ios::binary); std::vector packed( (std::istreambuf_iterator(f_bson)), std::istreambuf_iterator()); json j2; CHECK_NOTHROW(j2 = json::from_bson({packed.data(), packed.size()})); // compare parsed JSON values CHECK(j1 == j2); } SECTION(filename + ": output to output adapters") { // parse JSON file std::ifstream f_json(filename); json j1 = json::parse(f_json); // parse BSON file std::ifstream f_bson(filename + ".bson", std::ios::binary); std::vector packed( (std::istreambuf_iterator(f_bson)), std::istreambuf_iterator()); SECTION(filename + ": output adapters: std::vector") { std::vector 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)); } } } } } }