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Diffstat (limited to 'json4cpp/tests/src/unit-class_parser.cpp')
| -rw-r--r-- | json4cpp/tests/src/unit-class_parser.cpp | 1754 |
1 files changed, 1754 insertions, 0 deletions
diff --git a/json4cpp/tests/src/unit-class_parser.cpp b/json4cpp/tests/src/unit-class_parser.cpp new file mode 100644 index 0000000000..9c5fadc295 --- /dev/null +++ b/json4cpp/tests/src/unit-class_parser.cpp @@ -0,0 +1,1754 @@ +// __ _____ _____ _____ +// __| | __| | | | 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" + +#define JSON_TESTS_PRIVATE +#include <nlohmann/json.hpp> +using nlohmann::json; +#ifdef JSON_TEST_NO_GLOBAL_UDLS + using namespace nlohmann::literals; // NOLINT(google-build-using-namespace) +#endif + +#include <valarray> + +namespace +{ +class SaxEventLogger +{ + public: + bool null() + { + events.emplace_back("null()"); + return true; + } + + bool boolean(bool val) + { + events.emplace_back(val ? "boolean(true)" : "boolean(false)"); + return true; + } + + bool number_integer(json::number_integer_t val) + { + events.push_back("number_integer(" + std::to_string(val) + ")"); + return true; + } + + bool number_unsigned(json::number_unsigned_t val) + { + events.push_back("number_unsigned(" + std::to_string(val) + ")"); + return true; + } + + bool number_float(json::number_float_t /*unused*/, const std::string& s) + { + events.push_back("number_float(" + s + ")"); + return true; + } + + bool string(std::string& val) + { + events.push_back("string(" + val + ")"); + return true; + } + + bool binary(json::binary_t& val) + { + std::string binary_contents = "binary("; + std::string comma_space; + for (auto b : val) + { + binary_contents.append(comma_space); + binary_contents.append(std::to_string(static_cast<int>(b))); + comma_space = ", "; + } + binary_contents.append(")"); + events.push_back(binary_contents); + return true; + } + + bool start_object(std::size_t elements) + { + if (elements == (std::numeric_limits<std::size_t>::max)()) + { + events.emplace_back("start_object()"); + } + else + { + events.push_back("start_object(" + std::to_string(elements) + ")"); + } + return true; + } + + bool key(std::string& val) + { + events.push_back("key(" + val + ")"); + return true; + } + + bool end_object() + { + events.emplace_back("end_object()"); + return true; + } + + bool start_array(std::size_t elements) + { + if (elements == (std::numeric_limits<std::size_t>::max)()) + { + events.emplace_back("start_array()"); + } + else + { + events.push_back("start_array(" + std::to_string(elements) + ")"); + } + return true; + } + + bool end_array() + { + events.emplace_back("end_array()"); + return true; + } + + bool parse_error(std::size_t position, const std::string& /*unused*/, const json::exception& /*unused*/) + { + errored = true; + events.push_back("parse_error(" + std::to_string(position) + ")"); + return false; + } + + std::vector<std::string> events {}; // NOLINT(readability-redundant-member-init) + bool errored = false; +}; + +class SaxCountdown : public nlohmann::json::json_sax_t +{ + public: + explicit SaxCountdown(const int count) : events_left(count) + {} + + bool null() override + { + return events_left-- > 0; + } + + bool boolean(bool /*val*/) override + { + return events_left-- > 0; + } + + bool number_integer(json::number_integer_t /*val*/) override + { + return events_left-- > 0; + } + + bool number_unsigned(json::number_unsigned_t /*val*/) override + { + return events_left-- > 0; + } + + bool number_float(json::number_float_t /*val*/, const std::string& /*s*/) override + { + return events_left-- > 0; + } + + bool string(std::string& /*val*/) override + { + return events_left-- > 0; + } + + bool binary(json::binary_t& /*val*/) override + { + return events_left-- > 0; + } + + bool start_object(std::size_t /*elements*/) override + { + return events_left-- > 0; + } + + bool key(std::string& /*val*/) override + { + return events_left-- > 0; + } + + bool end_object() override + { + return events_left-- > 0; + } + + bool start_array(std::size_t /*elements*/) override + { + return events_left-- > 0; + } + + bool end_array() override + { + return events_left-- > 0; + } + + bool parse_error(std::size_t /*position*/, const std::string& /*last_token*/, const json::exception& /*ex*/) override + { + return false; + } + + private: + int events_left = 0; +}; + +json parser_helper(const std::string& s); +bool accept_helper(const std::string& s); +void comments_helper(const std::string& s); +void trailing_comma_helper(const std::string& s); + +json parser_helper(const std::string& s) +{ + json j; + json::parser(nlohmann::detail::input_adapter(s)).parse(true, j); + + // if this line was reached, no exception occurred + // -> check if result is the same without exceptions + json j_nothrow; + CHECK_NOTHROW(json::parser(nlohmann::detail::input_adapter(s), nullptr, false).parse(true, j_nothrow)); + CHECK(j_nothrow == j); + + json j_sax; + nlohmann::detail::json_sax_dom_parser<json, nlohmann::detail::string_input_adapter_type> sdp(j_sax); + json::sax_parse(s, &sdp); + CHECK(j_sax == j); + + comments_helper(s); + + trailing_comma_helper(s); + + return j; +} + +bool accept_helper(const std::string& s) +{ + CAPTURE(s) + + // 1. parse s without exceptions + json j; + CHECK_NOTHROW(json::parser(nlohmann::detail::input_adapter(s), nullptr, false).parse(true, j)); + const bool ok_noexcept = !j.is_discarded(); + + // 2. accept s + const bool ok_accept = json::parser(nlohmann::detail::input_adapter(s)).accept(true); + + // 3. check if both approaches come to the same result + CHECK(ok_noexcept == ok_accept); + + // 4. parse with SAX (compare with relaxed accept result) + SaxEventLogger el; + CHECK_NOTHROW(json::sax_parse(s, &el, json::input_format_t::json, false)); + CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept(false) == !el.errored); + + // 5. parse with simple callback + json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t /*unused*/, json& /*unused*/) noexcept + { + return true; + }; + json const j_cb = json::parse(s, cb, false); + const bool ok_noexcept_cb = !j_cb.is_discarded(); + + // 6. check if this approach came to the same result + CHECK(ok_noexcept == ok_noexcept_cb); + + // 7. check if comments or trailing commas are properly ignored + if (ok_accept) + { + comments_helper(s); + trailing_comma_helper(s); + } + + // 8. return result + return ok_accept; +} + +void comments_helper(const std::string& s) +{ + json _; + + // parse/accept with default parser + CHECK_NOTHROW(_ = json::parse(s)); + CHECK(json::accept(s)); + + // parse/accept while skipping comments + CHECK_NOTHROW(_ = json::parse(s, nullptr, false, true)); + CHECK(json::accept(s, true)); + + std::vector<std::string> json_with_comments; + + // start with a comment + json_with_comments.push_back(std::string("// this is a comment\n") + s); + json_with_comments.push_back(std::string("/* this is a comment */") + s); + // end with a comment + json_with_comments.push_back(s + "// this is a comment"); + json_with_comments.push_back(s + "/* this is a comment */"); + + // check all strings + for (const auto& json_with_comment : json_with_comments) + { + CAPTURE(json_with_comment) + CHECK_THROWS_AS(_ = json::parse(json_with_comment), json::parse_error); + CHECK(!json::accept(json_with_comment)); + + CHECK_NOTHROW(_ = json::parse(json_with_comment, nullptr, true, true)); + CHECK(json::accept(json_with_comment, true)); + } +} + +void trailing_comma_helper(const std::string& s) +{ + json _; + + // parse/accept with default parser + CHECK_NOTHROW(_ = json::parse(s)); + CHECK(json::accept(s)); + + // parse/accept while allowing trailing commas + CHECK_NOTHROW(_ = json::parse(s, nullptr, false, false, true)); + CHECK(json::accept(s, false, true)); + + // note: [,] and {,} are not allowed + if (s.size() > 1 && (s.back() == ']' || s.back() == '}') && !_.empty()) + { + std::vector<std::string> json_with_trailing_commas; + json_with_trailing_commas.push_back(s.substr(0, s.size() - 1) + " ," + s.back()); + json_with_trailing_commas.push_back(s.substr(0, s.size() - 1) + "," + s.back()); + json_with_trailing_commas.push_back(s.substr(0, s.size() - 1) + ", " + s.back()); + + for (const auto& json_with_trailing_comma : json_with_trailing_commas) + { + CAPTURE(json_with_trailing_comma) + CHECK_THROWS_AS(_ = json::parse(json_with_trailing_comma), json::parse_error); + CHECK(!json::accept(json_with_trailing_comma)); + + CHECK_NOTHROW(_ = json::parse(json_with_trailing_comma, nullptr, true, false, true)); + CHECK(json::accept(json_with_trailing_comma, false, true)); + } + } +} + +} // namespace + +TEST_CASE("parser class") +{ + SECTION("parse") + { + SECTION("null") + { + CHECK(parser_helper("null") == json(nullptr)); + } + + SECTION("true") + { + CHECK(parser_helper("true") == json(true)); + } + + SECTION("false") + { + CHECK(parser_helper("false") == json(false)); + } + + SECTION("array") + { + SECTION("empty array") + { + CHECK(parser_helper("[]") == json(json::value_t::array)); + CHECK(parser_helper("[ ]") == json(json::value_t::array)); + } + + SECTION("nonempty array") + { + CHECK(parser_helper("[true, false, null]") == json({true, false, nullptr})); + } + } + + SECTION("object") + { + SECTION("empty object") + { + CHECK(parser_helper("{}") == json(json::value_t::object)); + CHECK(parser_helper("{ }") == json(json::value_t::object)); + } + + SECTION("nonempty object") + { + CHECK(parser_helper("{\"\": true, \"one\": 1, \"two\": null}") == json({{"", true}, {"one", 1}, {"two", nullptr}})); + } + } + + SECTION("string") + { + // empty string + CHECK(parser_helper("\"\"") == json(json::value_t::string)); + + SECTION("errors") + { + // error: tab in string + CHECK_THROWS_WITH_AS(parser_helper("\"\t\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t; last read: '\"<U+0009>'", json::parse_error&); + // error: newline in string + CHECK_THROWS_WITH_AS(parser_helper("\"\n\""), "[json.exception.parse_error.101] parse error at line 2, column 0: syntax error while parsing value - invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n; last read: '\"<U+000A>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\r\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r; last read: '\"<U+000D>'", json::parse_error&); + // error: backspace in string + CHECK_THROWS_WITH_AS(parser_helper("\"\b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b; last read: '\"<U+0008>'", json::parse_error&); + // improve code coverage + CHECK_THROWS_AS(parser_helper("\uFF01"), json::parse_error&); + CHECK_THROWS_AS(parser_helper("[-4:1,]"), json::parse_error&); + // unescaped control characters + CHECK_THROWS_WITH_AS(parser_helper("\"\x00\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: missing closing quote; last read: '\"'", json::parse_error&); // NOLINT(bugprone-string-literal-with-embedded-nul) + CHECK_THROWS_WITH_AS(parser_helper("\"\x01\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0001 (SOH) must be escaped to \\u0001; last read: '\"<U+0001>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x02\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0002 (STX) must be escaped to \\u0002; last read: '\"<U+0002>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x03\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0003 (ETX) must be escaped to \\u0003; last read: '\"<U+0003>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x04\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0004 (EOT) must be escaped to \\u0004; last read: '\"<U+0004>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x05\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0005 (ENQ) must be escaped to \\u0005; last read: '\"<U+0005>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x06\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0006 (ACK) must be escaped to \\u0006; last read: '\"<U+0006>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x07\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0007 (BEL) must be escaped to \\u0007; last read: '\"<U+0007>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x08\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b; last read: '\"<U+0008>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x09\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t; last read: '\"<U+0009>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x0a\""), "[json.exception.parse_error.101] parse error at line 2, column 0: syntax error while parsing value - invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n; last read: '\"<U+000A>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x0b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000B (VT) must be escaped to \\u000B; last read: '\"<U+000B>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x0c\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f; last read: '\"<U+000C>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x0d\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r; last read: '\"<U+000D>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x0e\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000E (SO) must be escaped to \\u000E; last read: '\"<U+000E>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x0f\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000F (SI) must be escaped to \\u000F; last read: '\"<U+000F>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x10\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0010 (DLE) must be escaped to \\u0010; last read: '\"<U+0010>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x11\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0011 (DC1) must be escaped to \\u0011; last read: '\"<U+0011>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x12\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0012 (DC2) must be escaped to \\u0012; last read: '\"<U+0012>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x13\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0013 (DC3) must be escaped to \\u0013; last read: '\"<U+0013>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x14\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0014 (DC4) must be escaped to \\u0014; last read: '\"<U+0014>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x15\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0015 (NAK) must be escaped to \\u0015; last read: '\"<U+0015>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x16\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0016 (SYN) must be escaped to \\u0016; last read: '\"<U+0016>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x17\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0017 (ETB) must be escaped to \\u0017; last read: '\"<U+0017>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x18\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0018 (CAN) must be escaped to \\u0018; last read: '\"<U+0018>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x19\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0019 (EM) must be escaped to \\u0019; last read: '\"<U+0019>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x1a\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001A (SUB) must be escaped to \\u001A; last read: '\"<U+001A>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x1b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001B (ESC) must be escaped to \\u001B; last read: '\"<U+001B>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x1c\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001C (FS) must be escaped to \\u001C; last read: '\"<U+001C>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x1d\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001D (GS) must be escaped to \\u001D; last read: '\"<U+001D>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x1e\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001E (RS) must be escaped to \\u001E; last read: '\"<U+001E>'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\x1f\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001F (US) must be escaped to \\u001F; last read: '\"<U+001F>'", json::parse_error&); + + SECTION("additional test for null byte") + { + // The test above for the null byte is wrong, because passing + // a string to the parser only reads int until it encounters + // a null byte. This test inserts the null byte later on and + // uses an iterator range. + std::string s = "\"1\""; + s[1] = '\0'; + json _; + CHECK_THROWS_WITH_AS(_ = json::parse(s.begin(), s.end()), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0000 (NUL) must be escaped to \\u0000; last read: '\"<U+0000>'", json::parse_error&); + } + } + + SECTION("escaped") + { + // quotation mark "\"" + auto r1 = R"("\"")"_json; + CHECK(parser_helper("\"\\\"\"") == r1); + // reverse solidus "\\" + auto r2 = R"("\\")"_json; + CHECK(parser_helper("\"\\\\\"") == r2); + // solidus + CHECK(parser_helper("\"\\/\"") == R"("/")"_json); + // backspace + CHECK(parser_helper("\"\\b\"") == json("\b")); + // formfeed + CHECK(parser_helper("\"\\f\"") == json("\f")); + // newline + CHECK(parser_helper("\"\\n\"") == json("\n")); + // carriage return + CHECK(parser_helper("\"\\r\"") == json("\r")); + // horizontal tab + CHECK(parser_helper("\"\\t\"") == json("\t")); + + CHECK(parser_helper("\"\\u0001\"").get<json::string_t>() == "\x01"); + CHECK(parser_helper("\"\\u000a\"").get<json::string_t>() == "\n"); + CHECK(parser_helper("\"\\u00b0\"").get<json::string_t>() == "°"); + CHECK(parser_helper("\"\\u0c00\"").get<json::string_t>() == "ఀ"); + CHECK(parser_helper("\"\\ud000\"").get<json::string_t>() == "퀀"); + CHECK(parser_helper("\"\\u000E\"").get<json::string_t>() == "\x0E"); + CHECK(parser_helper("\"\\u00F0\"").get<json::string_t>() == "ð"); + CHECK(parser_helper("\"\\u0100\"").get<json::string_t>() == "Ā"); + CHECK(parser_helper("\"\\u2000\"").get<json::string_t>() == " "); + CHECK(parser_helper("\"\\uFFFF\"").get<json::string_t>() == ""); + CHECK(parser_helper("\"\\u20AC\"").get<json::string_t>() == "€"); + CHECK(parser_helper("\"€\"").get<json::string_t>() == "€"); + CHECK(parser_helper("\"🎈\"").get<json::string_t>() == "🎈"); + + CHECK(parser_helper("\"\\ud80c\\udc60\"").get<json::string_t>() == "\xf0\x93\x81\xa0"); + CHECK(parser_helper("\"\\ud83c\\udf1e\"").get<json::string_t>() == "🌞"); + } + } + + SECTION("number") + { + SECTION("integers") + { + SECTION("without exponent") + { + CHECK(parser_helper("-128") == json(-128)); + CHECK(parser_helper("-0") == json(-0)); + CHECK(parser_helper("0") == json(0)); + CHECK(parser_helper("128") == json(128)); + } + + SECTION("with exponent") + { + CHECK(parser_helper("0e1") == json(0e1)); + CHECK(parser_helper("0E1") == json(0e1)); + + CHECK(parser_helper("10000E-4") == json(10000e-4)); + CHECK(parser_helper("10000E-3") == json(10000e-3)); + CHECK(parser_helper("10000E-2") == json(10000e-2)); + CHECK(parser_helper("10000E-1") == json(10000e-1)); + CHECK(parser_helper("10000E0") == json(10000e0)); + CHECK(parser_helper("10000E1") == json(10000e1)); + CHECK(parser_helper("10000E2") == json(10000e2)); + CHECK(parser_helper("10000E3") == json(10000e3)); + CHECK(parser_helper("10000E4") == json(10000e4)); + + CHECK(parser_helper("10000e-4") == json(10000e-4)); + CHECK(parser_helper("10000e-3") == json(10000e-3)); + CHECK(parser_helper("10000e-2") == json(10000e-2)); + CHECK(parser_helper("10000e-1") == json(10000e-1)); + CHECK(parser_helper("10000e0") == json(10000e0)); + CHECK(parser_helper("10000e1") == json(10000e1)); + CHECK(parser_helper("10000e2") == json(10000e2)); + CHECK(parser_helper("10000e3") == json(10000e3)); + CHECK(parser_helper("10000e4") == json(10000e4)); + + CHECK(parser_helper("-0e1") == json(-0e1)); + CHECK(parser_helper("-0E1") == json(-0e1)); + CHECK(parser_helper("-0E123") == json(-0e123)); + + // numbers after exponent + CHECK(parser_helper("10E0") == json(10e0)); + CHECK(parser_helper("10E1") == json(10e1)); + CHECK(parser_helper("10E2") == json(10e2)); + CHECK(parser_helper("10E3") == json(10e3)); + CHECK(parser_helper("10E4") == json(10e4)); + CHECK(parser_helper("10E5") == json(10e5)); + CHECK(parser_helper("10E6") == json(10e6)); + CHECK(parser_helper("10E7") == json(10e7)); + CHECK(parser_helper("10E8") == json(10e8)); + CHECK(parser_helper("10E9") == json(10e9)); + CHECK(parser_helper("10E+0") == json(10e0)); + CHECK(parser_helper("10E+1") == json(10e1)); + CHECK(parser_helper("10E+2") == json(10e2)); + CHECK(parser_helper("10E+3") == json(10e3)); + CHECK(parser_helper("10E+4") == json(10e4)); + CHECK(parser_helper("10E+5") == json(10e5)); + CHECK(parser_helper("10E+6") == json(10e6)); + CHECK(parser_helper("10E+7") == json(10e7)); + CHECK(parser_helper("10E+8") == json(10e8)); + CHECK(parser_helper("10E+9") == json(10e9)); + CHECK(parser_helper("10E-1") == json(10e-1)); + CHECK(parser_helper("10E-2") == json(10e-2)); + CHECK(parser_helper("10E-3") == json(10e-3)); + CHECK(parser_helper("10E-4") == json(10e-4)); + CHECK(parser_helper("10E-5") == json(10e-5)); + CHECK(parser_helper("10E-6") == json(10e-6)); + CHECK(parser_helper("10E-7") == json(10e-7)); + CHECK(parser_helper("10E-8") == json(10e-8)); + CHECK(parser_helper("10E-9") == json(10e-9)); + } + + SECTION("edge cases") + { + // From RFC8259, Section 6: + // Note that when such software is used, numbers that are + // integers and are in the range [-(2**53)+1, (2**53)-1] + // are interoperable in the sense that implementations will + // agree exactly on their numeric values. + + // -(2**53)+1 + CHECK(parser_helper("-9007199254740991").get<int64_t>() == -9007199254740991); + // (2**53)-1 + CHECK(parser_helper("9007199254740991").get<int64_t>() == 9007199254740991); + } + + SECTION("over the edge cases") // issue #178 - Integer conversion to unsigned (incorrect handling of 64-bit integers) + { + // While RFC8259, Section 6 specifies a preference for support + // for ranges in range of IEEE 754-2008 binary64 (double precision) + // this does not accommodate 64-bit integers without loss of accuracy. + // As 64-bit integers are now widely used in software, it is desirable + // to expand support to the full 64 bit (signed and unsigned) range + // i.e. -(2**63) -> (2**64)-1. + + // -(2**63) ** Note: compilers see negative literals as negated positive numbers (hence the -1)) + CHECK(parser_helper("-9223372036854775808").get<int64_t>() == -9223372036854775807 - 1); + // (2**63)-1 + CHECK(parser_helper("9223372036854775807").get<int64_t>() == 9223372036854775807); + // (2**64)-1 + CHECK(parser_helper("18446744073709551615").get<uint64_t>() == 18446744073709551615u); + } + } + + SECTION("floating-point") + { + SECTION("without exponent") + { + CHECK(parser_helper("-128.5") == json(-128.5)); + CHECK(parser_helper("0.999") == json(0.999)); + CHECK(parser_helper("128.5") == json(128.5)); + CHECK(parser_helper("-0.0") == json(-0.0)); + } + + SECTION("with exponent") + { + CHECK(parser_helper("-128.5E3") == json(-128.5E3)); + CHECK(parser_helper("-128.5E-3") == json(-128.5E-3)); + CHECK(parser_helper("-0.0e1") == json(-0.0e1)); + CHECK(parser_helper("-0.0E1") == json(-0.0e1)); + } + } + + SECTION("overflow") + { + // overflows during parsing yield an exception + CHECK_THROWS_WITH_AS(parser_helper("1.18973e+4932").empty(), "[json.exception.out_of_range.406] number overflow parsing '1.18973e+4932'", json::out_of_range&); + } + + SECTION("invalid numbers") + { + // numbers must not begin with "+" + CHECK_THROWS_AS(parser_helper("+1"), json::parse_error&); + CHECK_THROWS_AS(parser_helper("+0"), json::parse_error&); + + CHECK_THROWS_WITH_AS(parser_helper("01"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - unexpected number literal; expected end of input", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-01"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - unexpected number literal; expected end of input", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("--1"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '--'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1."), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '1.'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1E"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1E-"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '1E-'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1.E1"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '1.E'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-1E"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '-1E'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0E#"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '-0E#'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0E-#"), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '-0E-#'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0#"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: '-0#'; expected end of input", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0.0:"), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - unexpected ':'; expected end of input", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0.0Z"), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: '-0.0Z'; expected end of input", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0E123:"), + "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - unexpected ':'; expected end of input", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0e0-:"), + "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-:'; expected end of input", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0e-:"), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '-0e-:'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0f"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: '-0f'; expected end of input", json::parse_error&); + } + } + } + + SECTION("accept") + { + SECTION("null") + { + CHECK(accept_helper("null")); + } + + SECTION("true") + { + CHECK(accept_helper("true")); + } + + SECTION("false") + { + CHECK(accept_helper("false")); + } + + SECTION("array") + { + SECTION("empty array") + { + CHECK(accept_helper("[]")); + CHECK(accept_helper("[ ]")); + } + + SECTION("nonempty array") + { + CHECK(accept_helper("[true, false, null]")); + } + } + + SECTION("object") + { + SECTION("empty object") + { + CHECK(accept_helper("{}")); + CHECK(accept_helper("{ }")); + } + + SECTION("nonempty object") + { + CHECK(accept_helper("{\"\": true, \"one\": 1, \"two\": null}")); + } + } + + SECTION("string") + { + // empty string + CHECK(accept_helper("\"\"")); + + SECTION("errors") + { + // error: tab in string + CHECK(accept_helper("\"\t\"") == false); + // error: newline in string + CHECK(accept_helper("\"\n\"") == false); + CHECK(accept_helper("\"\r\"") == false); + // error: backspace in string + CHECK(accept_helper("\"\b\"") == false); + // improve code coverage + CHECK(accept_helper("\uFF01") == false); + CHECK(accept_helper("[-4:1,]") == false); + // unescaped control characters + CHECK(accept_helper("\"\x00\"") == false); // NOLINT(bugprone-string-literal-with-embedded-nul) + CHECK(accept_helper("\"\x01\"") == false); + CHECK(accept_helper("\"\x02\"") == false); + CHECK(accept_helper("\"\x03\"") == false); + CHECK(accept_helper("\"\x04\"") == false); + CHECK(accept_helper("\"\x05\"") == false); + CHECK(accept_helper("\"\x06\"") == false); + CHECK(accept_helper("\"\x07\"") == false); + CHECK(accept_helper("\"\x08\"") == false); + CHECK(accept_helper("\"\x09\"") == false); + CHECK(accept_helper("\"\x0a\"") == false); + CHECK(accept_helper("\"\x0b\"") == false); + CHECK(accept_helper("\"\x0c\"") == false); + CHECK(accept_helper("\"\x0d\"") == false); + CHECK(accept_helper("\"\x0e\"") == false); + CHECK(accept_helper("\"\x0f\"") == false); + CHECK(accept_helper("\"\x10\"") == false); + CHECK(accept_helper("\"\x11\"") == false); + CHECK(accept_helper("\"\x12\"") == false); + CHECK(accept_helper("\"\x13\"") == false); + CHECK(accept_helper("\"\x14\"") == false); + CHECK(accept_helper("\"\x15\"") == false); + CHECK(accept_helper("\"\x16\"") == false); + CHECK(accept_helper("\"\x17\"") == false); + CHECK(accept_helper("\"\x18\"") == false); + CHECK(accept_helper("\"\x19\"") == false); + CHECK(accept_helper("\"\x1a\"") == false); + CHECK(accept_helper("\"\x1b\"") == false); + CHECK(accept_helper("\"\x1c\"") == false); + CHECK(accept_helper("\"\x1d\"") == false); + CHECK(accept_helper("\"\x1e\"") == false); + CHECK(accept_helper("\"\x1f\"") == false); + } + + SECTION("escaped") + { + // quotation mark "\"" + auto r1 = R"("\"")"_json; + CHECK(accept_helper("\"\\\"\"")); + // reverse solidus "\\" + auto r2 = R"("\\")"_json; + CHECK(accept_helper("\"\\\\\"")); + // solidus + CHECK(accept_helper("\"\\/\"")); + // backspace + CHECK(accept_helper("\"\\b\"")); + // formfeed + CHECK(accept_helper("\"\\f\"")); + // newline + CHECK(accept_helper("\"\\n\"")); + // carriage return + CHECK(accept_helper("\"\\r\"")); + // horizontal tab + CHECK(accept_helper("\"\\t\"")); + + CHECK(accept_helper("\"\\u0001\"")); + CHECK(accept_helper("\"\\u000a\"")); + CHECK(accept_helper("\"\\u00b0\"")); + CHECK(accept_helper("\"\\u0c00\"")); + CHECK(accept_helper("\"\\ud000\"")); + CHECK(accept_helper("\"\\u000E\"")); + CHECK(accept_helper("\"\\u00F0\"")); + CHECK(accept_helper("\"\\u0100\"")); + CHECK(accept_helper("\"\\u2000\"")); + CHECK(accept_helper("\"\\uFFFF\"")); + CHECK(accept_helper("\"\\u20AC\"")); + CHECK(accept_helper("\"€\"")); + CHECK(accept_helper("\"🎈\"")); + + CHECK(accept_helper("\"\\ud80c\\udc60\"")); + CHECK(accept_helper("\"\\ud83c\\udf1e\"")); + } + } + + SECTION("number") + { + SECTION("integers") + { + SECTION("without exponent") + { + CHECK(accept_helper("-128")); + CHECK(accept_helper("-0")); + CHECK(accept_helper("0")); + CHECK(accept_helper("128")); + } + + SECTION("with exponent") + { + CHECK(accept_helper("0e1")); + CHECK(accept_helper("0E1")); + + CHECK(accept_helper("10000E-4")); + CHECK(accept_helper("10000E-3")); + CHECK(accept_helper("10000E-2")); + CHECK(accept_helper("10000E-1")); + CHECK(accept_helper("10000E0")); + CHECK(accept_helper("10000E1")); + CHECK(accept_helper("10000E2")); + CHECK(accept_helper("10000E3")); + CHECK(accept_helper("10000E4")); + + CHECK(accept_helper("10000e-4")); + CHECK(accept_helper("10000e-3")); + CHECK(accept_helper("10000e-2")); + CHECK(accept_helper("10000e-1")); + CHECK(accept_helper("10000e0")); + CHECK(accept_helper("10000e1")); + CHECK(accept_helper("10000e2")); + CHECK(accept_helper("10000e3")); + CHECK(accept_helper("10000e4")); + + CHECK(accept_helper("-0e1")); + CHECK(accept_helper("-0E1")); + CHECK(accept_helper("-0E123")); + } + + SECTION("edge cases") + { + // From RFC8259, Section 6: + // Note that when such software is used, numbers that are + // integers and are in the range [-(2**53)+1, (2**53)-1] + // are interoperable in the sense that implementations will + // agree exactly on their numeric values. + + // -(2**53)+1 + CHECK(accept_helper("-9007199254740991")); + // (2**53)-1 + CHECK(accept_helper("9007199254740991")); + } + + SECTION("over the edge cases") // issue #178 - Integer conversion to unsigned (incorrect handling of 64-bit integers) + { + // While RFC8259, Section 6 specifies a preference for support + // for ranges in range of IEEE 754-2008 binary64 (double precision) + // this does not accommodate 64 bit integers without loss of accuracy. + // As 64 bit integers are now widely used in software, it is desirable + // to expand support to the full 64 bit (signed and unsigned) range + // i.e. -(2**63) -> (2**64)-1. + + // -(2**63) ** Note: compilers see negative literals as negated positive numbers (hence the -1)) + CHECK(accept_helper("-9223372036854775808")); + // (2**63)-1 + CHECK(accept_helper("9223372036854775807")); + // (2**64)-1 + CHECK(accept_helper("18446744073709551615")); + } + } + + SECTION("floating-point") + { + SECTION("without exponent") + { + CHECK(accept_helper("-128.5")); + CHECK(accept_helper("0.999")); + CHECK(accept_helper("128.5")); + CHECK(accept_helper("-0.0")); + } + + SECTION("with exponent") + { + CHECK(accept_helper("-128.5E3")); + CHECK(accept_helper("-128.5E-3")); + CHECK(accept_helper("-0.0e1")); + CHECK(accept_helper("-0.0E1")); + } + } + + SECTION("overflow") + { + // overflows during parsing + CHECK(!accept_helper("1.18973e+4932")); + } + + SECTION("invalid numbers") + { + CHECK(accept_helper("01") == false); + CHECK(accept_helper("--1") == false); + CHECK(accept_helper("1.") == false); + CHECK(accept_helper("1E") == false); + CHECK(accept_helper("1E-") == false); + CHECK(accept_helper("1.E1") == false); + CHECK(accept_helper("-1E") == false); + CHECK(accept_helper("-0E#") == false); + CHECK(accept_helper("-0E-#") == false); + CHECK(accept_helper("-0#") == false); + CHECK(accept_helper("-0.0:") == false); + CHECK(accept_helper("-0.0Z") == false); + CHECK(accept_helper("-0E123:") == false); + CHECK(accept_helper("-0e0-:") == false); + CHECK(accept_helper("-0e-:") == false); + CHECK(accept_helper("-0f") == false); + + // numbers must not begin with "+" + CHECK(accept_helper("+1") == false); + CHECK(accept_helper("+0") == false); + } + } + } + + SECTION("parse errors") + { + // unexpected end of number + CHECK_THROWS_WITH_AS(parser_helper("0."), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '0.'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("--"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '--'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-0."), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected digit after '.'; last read: '-0.'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-."), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-.'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("-:"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-:'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("0.:"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '0.:'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("e."), + "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - invalid literal; last read: 'e'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1e."), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e.'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1e/"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e/'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1e:"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e:'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1E."), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E.'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1E/"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E/'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("1E:"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E:'", json::parse_error&); + + // unexpected end of null + CHECK_THROWS_WITH_AS(parser_helper("n"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 'n'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("nu"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'nu'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("nul"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nul'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("nulk"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nulk'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("nulm"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nulm'", json::parse_error&); + + // unexpected end of true + CHECK_THROWS_WITH_AS(parser_helper("t"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 't'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("tr"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'tr'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("tru"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'tru'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("trud"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'trud'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("truf"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'truf'", json::parse_error&); + + // unexpected end of false + CHECK_THROWS_WITH_AS(parser_helper("f"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 'f'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("fa"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'fa'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("fal"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'fal'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("fals"), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'fals'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("falsd"), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'falsd'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("falsf"), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'falsf'", json::parse_error&); + + // missing/unexpected end of array + CHECK_THROWS_WITH_AS(parser_helper("["), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("[1"), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("[1,"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("[1,]"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("]"), + "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal", json::parse_error&); + + // missing/unexpected end of object + CHECK_THROWS_WITH_AS(parser_helper("{"), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing object key - unexpected end of input; expected string literal", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("{\"foo\""), + "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing object separator - unexpected end of input; expected ':'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":"), + "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":}"), + "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected '}'; expected '[', '{', or a literal", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":1,}"), + "[json.exception.parse_error.101] parse error at line 1, column 10: syntax error while parsing object key - unexpected '}'; expected string literal", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("}"), + "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - unexpected '}'; expected '[', '{', or a literal", json::parse_error&); + + // missing/unexpected end of string + CHECK_THROWS_WITH_AS(parser_helper("\""), + "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: missing closing quote; last read: '\"'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\\""), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: missing closing quote; last read: '\"\\\"'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\u\""), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u\"'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\u0\""), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u0\"'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\u01\""), + "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u01\"'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\u012\""), + "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u012\"'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\u"), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\u0"), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u0'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\u01"), + "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u01'", json::parse_error&); + CHECK_THROWS_WITH_AS(parser_helper("\"\\u012"), + "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u012'", json::parse_error&); + + // invalid escapes + for (int c = 1; c < 128; ++c) + { + auto s = std::string("\"\\") + std::string(1, static_cast<char>(c)) + "\""; + + switch (c) + { + // valid escapes + case ('"'): + case ('\\'): + case ('/'): + case ('b'): + case ('f'): + case ('n'): + case ('r'): + case ('t'): + { + CHECK_NOTHROW(parser_helper(s)); + break; + } + + // \u must be followed with four numbers, so we skip it here + case ('u'): + { + break; + } + + // any other combination of backslash and character is invalid + default: + { + CHECK_THROWS_AS(parser_helper(s), json::parse_error&); + // only check error message if c is not a control character + if (c > 0x1f) + { + CHECK_THROWS_WITH_STD_STR(parser_helper(s), + "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid string: forbidden character after backslash; last read: '\"\\" + std::string(1, static_cast<char>(c)) + "'"); + } + break; + } + } + } + + // invalid \uxxxx escapes + { + // check whether character is a valid hex character + const auto valid = [](int c) + { + switch (c) + { + case ('0'): + case ('1'): + case ('2'): + case ('3'): + case ('4'): + case ('5'): + case ('6'): + case ('7'): + case ('8'): + case ('9'): + case ('a'): + case ('b'): + case ('c'): + case ('d'): + case ('e'): + case ('f'): + case ('A'): + case ('B'): + case ('C'): + case ('D'): + case ('E'): + case ('F'): + { + return true; + } + + default: + { + return false; + } + } + }; + + for (int c = 1; c < 128; ++c) + { + std::string const s = "\"\\u"; + + // create a string with the iterated character at each position + auto s1 = s + "000" + std::string(1, static_cast<char>(c)) + "\""; + auto s2 = s + "00" + std::string(1, static_cast<char>(c)) + "0\""; + auto s3 = s + "0" + std::string(1, static_cast<char>(c)) + "00\""; + auto s4 = s + std::string(1, static_cast<char>(c)) + "000\""; + + if (valid(c)) + { + CAPTURE(s1) + CHECK_NOTHROW(parser_helper(s1)); + CAPTURE(s2) + CHECK_NOTHROW(parser_helper(s2)); + CAPTURE(s3) + CHECK_NOTHROW(parser_helper(s3)); + CAPTURE(s4) + CHECK_NOTHROW(parser_helper(s4)); + } + else + { + CAPTURE(s1) + CHECK_THROWS_AS(parser_helper(s1), json::parse_error&); + // only check error message if c is not a control character + if (c > 0x1f) + { + CHECK_THROWS_WITH_STD_STR(parser_helper(s1), + "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s1.substr(0, 7) + "'"); + } + + CAPTURE(s2) + CHECK_THROWS_AS(parser_helper(s2), json::parse_error&); + // only check error message if c is not a control character + if (c > 0x1f) + { + CHECK_THROWS_WITH_STD_STR(parser_helper(s2), + "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s2.substr(0, 6) + "'"); + } + + CAPTURE(s3) + CHECK_THROWS_AS(parser_helper(s3), json::parse_error&); + // only check error message if c is not a control character + if (c > 0x1f) + { + CHECK_THROWS_WITH_STD_STR(parser_helper(s3), + "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s3.substr(0, 5) + "'"); + } + + CAPTURE(s4) + CHECK_THROWS_AS(parser_helper(s4), json::parse_error&); + // only check error message if c is not a control character + if (c > 0x1f) + { + CHECK_THROWS_WITH_STD_STR(parser_helper(s4), + "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s4.substr(0, 4) + "'"); + } + } + } + } + + json _; + + // missing part of a surrogate pair + CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\""), "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\"'", json::parse_error&); + // invalid surrogate pair + CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\uD80C\""), + "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\uD80C'", json::parse_error&); + CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\u0000\""), + "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\u0000'", json::parse_error&); + CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\uFFFF\""), + "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\uFFFF'", json::parse_error&); + } + + SECTION("parse errors (accept)") + { + // unexpected end of number + CHECK(accept_helper("0.") == false); + CHECK(accept_helper("-") == false); + CHECK(accept_helper("--") == false); + CHECK(accept_helper("-0.") == false); + CHECK(accept_helper("-.") == false); + CHECK(accept_helper("-:") == false); + CHECK(accept_helper("0.:") == false); + CHECK(accept_helper("e.") == false); + CHECK(accept_helper("1e.") == false); + CHECK(accept_helper("1e/") == false); + CHECK(accept_helper("1e:") == false); + CHECK(accept_helper("1E.") == false); + CHECK(accept_helper("1E/") == false); + CHECK(accept_helper("1E:") == false); + + // unexpected end of null + CHECK(accept_helper("n") == false); + CHECK(accept_helper("nu") == false); + CHECK(accept_helper("nul") == false); + + // unexpected end of true + CHECK(accept_helper("t") == false); + CHECK(accept_helper("tr") == false); + CHECK(accept_helper("tru") == false); + + // unexpected end of false + CHECK(accept_helper("f") == false); + CHECK(accept_helper("fa") == false); + CHECK(accept_helper("fal") == false); + CHECK(accept_helper("fals") == false); + + // missing/unexpected end of array + CHECK(accept_helper("[") == false); + CHECK(accept_helper("[1") == false); + CHECK(accept_helper("[1,") == false); + CHECK(accept_helper("[1,]") == false); + CHECK(accept_helper("]") == false); + + // missing/unexpected end of object + CHECK(accept_helper("{") == false); + CHECK(accept_helper("{\"foo\"") == false); + CHECK(accept_helper("{\"foo\":") == false); + CHECK(accept_helper("{\"foo\":}") == false); + CHECK(accept_helper("{\"foo\":1,}") == false); + CHECK(accept_helper("}") == false); + + // missing/unexpected end of string + CHECK(accept_helper("\"") == false); + CHECK(accept_helper("\"\\\"") == false); + CHECK(accept_helper("\"\\u\"") == false); + CHECK(accept_helper("\"\\u0\"") == false); + CHECK(accept_helper("\"\\u01\"") == false); + CHECK(accept_helper("\"\\u012\"") == false); + CHECK(accept_helper("\"\\u") == false); + CHECK(accept_helper("\"\\u0") == false); + CHECK(accept_helper("\"\\u01") == false); + CHECK(accept_helper("\"\\u012") == false); + + // unget of newline + CHECK(parser_helper("\n123\n") == 123); + + // invalid escapes + for (int c = 1; c < 128; ++c) + { + auto s = std::string("\"\\") + std::string(1, static_cast<char>(c)) + "\""; + + switch (c) + { + // valid escapes + case ('"'): + case ('\\'): + case ('/'): + case ('b'): + case ('f'): + case ('n'): + case ('r'): + case ('t'): + { + CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept()); + break; + } + + // \u must be followed with four numbers, so we skip it here + case ('u'): + { + break; + } + + // any other combination of backslash and character is invalid + default: + { + CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept() == false); + break; + } + } + } + + // invalid \uxxxx escapes + { + // check whether character is a valid hex character + const auto valid = [](int c) + { + switch (c) + { + case ('0'): + case ('1'): + case ('2'): + case ('3'): + case ('4'): + case ('5'): + case ('6'): + case ('7'): + case ('8'): + case ('9'): + case ('a'): + case ('b'): + case ('c'): + case ('d'): + case ('e'): + case ('f'): + case ('A'): + case ('B'): + case ('C'): + case ('D'): + case ('E'): + case ('F'): + { + return true; + } + + default: + { + return false; + } + } + }; + + for (int c = 1; c < 128; ++c) + { + std::string const s = "\"\\u"; + + // create a string with the iterated character at each position + const auto s1 = s + "000" + std::string(1, static_cast<char>(c)) + "\""; + const auto s2 = s + "00" + std::string(1, static_cast<char>(c)) + "0\""; + const auto s3 = s + "0" + std::string(1, static_cast<char>(c)) + "00\""; + const auto s4 = s + std::string(1, static_cast<char>(c)) + "000\""; + + if (valid(c)) + { + CAPTURE(s1) + CHECK(json::parser(nlohmann::detail::input_adapter(s1)).accept()); + CAPTURE(s2) + CHECK(json::parser(nlohmann::detail::input_adapter(s2)).accept()); + CAPTURE(s3) + CHECK(json::parser(nlohmann::detail::input_adapter(s3)).accept()); + CAPTURE(s4) + CHECK(json::parser(nlohmann::detail::input_adapter(s4)).accept()); + } + else + { + CAPTURE(s1) + CHECK(json::parser(nlohmann::detail::input_adapter(s1)).accept() == false); + + CAPTURE(s2) + CHECK(json::parser(nlohmann::detail::input_adapter(s2)).accept() == false); + + CAPTURE(s3) + CHECK(json::parser(nlohmann::detail::input_adapter(s3)).accept() == false); + + CAPTURE(s4) + CHECK(json::parser(nlohmann::detail::input_adapter(s4)).accept() == false); + } + } + } + + // missing part of a surrogate pair + CHECK(accept_helper("\"\\uD80C\"") == false); + // invalid surrogate pair + CHECK(accept_helper("\"\\uD80C\\uD80C\"") == false); + CHECK(accept_helper("\"\\uD80C\\u0000\"") == false); + CHECK(accept_helper("\"\\uD80C\\uFFFF\"") == false); + } + + SECTION("tests found by mutate++") + { + // test case to make sure no comma precedes the first key + CHECK_THROWS_WITH_AS(parser_helper("{,\"key\": false}"), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing object key - unexpected ','; expected string literal", json::parse_error&); + // test case to make sure an object is properly closed + CHECK_THROWS_WITH_AS(parser_helper("[{\"key\": false true]"), "[json.exception.parse_error.101] parse error at line 1, column 19: syntax error while parsing object - unexpected true literal; expected '}'", json::parse_error&); + + // test case to make sure the callback is properly evaluated after reading a key + { + json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t event, json& /*unused*/) noexcept + { + return event != json::parse_event_t::key; + }; + + const json x = json::parse("{\"key\": false}", cb); + CHECK(x == json::object()); + } + } + + SECTION("callback function") + { + const auto* s_object = R"( + { + "foo": 2, + "bar": { + "baz": 1 + } + } + )"; + + const auto* s_array = R"( + [1,2,[3,4,5],4,5] + )"; + + const auto* structured_array = R"( + [ + 1, + { + "foo": "bar" + }, + { + "qux": "baz" + } + ] + )"; + + SECTION("filter nothing") + { + const json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept + { + return true; + }); + + CHECK (j_object == json({{"foo", 2}, {"bar", {{"baz", 1}}}})); + + const json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept + { + return true; + }); + + CHECK (j_array == json({1, 2, {3, 4, 5}, 4, 5})); + } + + SECTION("filter everything") + { + json const j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept + { + return false; + }); + + // the top-level object will be discarded, leaving a null + CHECK (j_object.is_null()); + + json const j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept + { + return false; + }); + + // the top-level array will be discarded, leaving a null + CHECK (j_array.is_null()); + } + + SECTION("filter specific element") + { + const json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t event, const json & j) noexcept + { + // filter all number(2) elements + return event != json::parse_event_t::value || j != json(2); + }); + + CHECK (j_object == json({{"bar", {{"baz", 1}}}})); + + const json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t event, const json & j) noexcept + { + return event != json::parse_event_t::value || j != json(2); + }); + + CHECK (j_array == json({1, {3, 4, 5}, 4, 5})); + } + + SECTION("filter object in array") + { + const json j_filtered1 = json::parse(structured_array, [](int /*unused*/, json::parse_event_t e, const json & parsed) + { + return !(e == json::parse_event_t::object_end && parsed.contains("foo")); + }); + + // the specified object will be discarded, and removed. + CHECK (j_filtered1.size() == 2); + CHECK (j_filtered1 == json({1, {{"qux", "baz"}}})); + + const json j_filtered2 = json::parse(structured_array, [](int /*unused*/, json::parse_event_t e, const json& /*parsed*/) noexcept + { + return e != json::parse_event_t::object_end; + }); + + // removed all objects in array. + CHECK (j_filtered2.size() == 1); + CHECK (j_filtered2 == json({1})); + } + + SECTION("filter specific events") + { + SECTION("first closing event") + { + { + const json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept + { + static bool first = true; + if (e == json::parse_event_t::object_end && first) + { + first = false; + return false; + } + + return true; + }); + + // the first completed object will be discarded + CHECK (j_object == json({{"foo", 2}})); + } + + { + const json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept + { + static bool first = true; + if (e == json::parse_event_t::array_end && first) + { + first = false; + return false; + } + + return true; + }); + + // the first completed array will be discarded + CHECK (j_array == json({1, 2, 4, 5})); + } + } + } + + SECTION("special cases") + { + // the following test cases cover the situation in which an empty + // object and array is discarded only after the closing character + // has been read + + const json j_empty_object = json::parse("{}", [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept + { + return e != json::parse_event_t::object_end; + }); + CHECK(j_empty_object == json()); + + const json j_empty_array = json::parse("[]", [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept + { + return e != json::parse_event_t::array_end; + }); + CHECK(j_empty_array == json()); + } + } + + SECTION("constructing from contiguous containers") + { + SECTION("from std::vector") + { + std::vector<uint8_t> v = {'t', 'r', 'u', 'e'}; + json j; + json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j); + CHECK(j == json(true)); + } + + SECTION("from std::array") + { + std::array<uint8_t, 5> v { {'t', 'r', 'u', 'e'} }; + json j; + json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j); + CHECK(j == json(true)); + } + + SECTION("from array") + { + uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) + json j; + json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j); + CHECK(j == json(true)); + } + + SECTION("from char literal") + { + CHECK(parser_helper("true") == json(true)); + } + + SECTION("from std::string") + { + std::string v = {'t', 'r', 'u', 'e'}; + json j; + json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j); + CHECK(j == json(true)); + } + + SECTION("from std::initializer_list") + { + std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'}; + json j; + json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j); + CHECK(j == json(true)); + } + + SECTION("from std::valarray") + { + std::valarray<uint8_t> v = {'t', 'r', 'u', 'e'}; + json j; + json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j); + CHECK(j == json(true)); + } + } + + SECTION("improve test coverage") + { + SECTION("parser with callback") + { + json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t /*unused*/, json& /*unused*/) noexcept + { + return true; + }; + + CHECK(json::parse("{\"foo\": true:", cb, false).is_discarded()); + + json _; + CHECK_THROWS_WITH_AS(_ = json::parse("{\"foo\": true:", cb), "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing object - unexpected ':'; expected '}'", json::parse_error&); + + CHECK_THROWS_WITH_AS(_ = json::parse("1.18973e+4932", cb), "[json.exception.out_of_range.406] number overflow parsing '1.18973e+4932'", json::out_of_range&); + } + + SECTION("SAX parser") + { + SECTION("null sax handler") + { +# if defined(__has_feature) +#if !__has_feature(undefined_behavior_sanitizer) + const std::string s = "some_string"; + SaxCountdown* p = nullptr; + CHECK_THROWS_WITH_AS(json::sax_parse(s, p), "[json.exception.other_error.502] SAX handler must not be null", json::other_error&); // NOLINT(clang-analyzer-core.NonNullParamChecker) + CHECK_THROWS_WITH_AS(json::sax_parse(s.begin(), s.end(), p), "[json.exception.other_error.502] SAX handler must not be null", json::other_error&); // NOLINT(clang-analyzer-core.NonNullParamChecker) + CHECK_THROWS_WITH_AS(json::sax_parse(nlohmann::detail::span_input_adapter(s.c_str(), s.size()), p), "[json.exception.other_error.502] SAX handler must not be null", json::other_error&); // NOLINT(clang-analyzer-core.NonNullParamChecker) +#endif +#else + const std::string s = "some_string"; + SaxCountdown* p = nullptr; + CHECK_THROWS_WITH_AS(json::sax_parse(s, p), "[json.exception.other_error.502] SAX handler must not be null", json::other_error&); // NOLINT(clang-analyzer-core.NonNullParamChecker) + CHECK_THROWS_WITH_AS(json::sax_parse(s.begin(), s.end(), p), "[json.exception.other_error.502] SAX handler must not be null", json::other_error&); // NOLINT(clang-analyzer-core.NonNullParamChecker) + CHECK_THROWS_WITH_AS(json::sax_parse(nlohmann::detail::span_input_adapter(s.c_str(), s.size()), p), "[json.exception.other_error.502] SAX handler must not be null", json::other_error&); // NOLINT(clang-analyzer-core.NonNullParamChecker) +#endif + } + + SECTION("valid sax handler") + { + const std::string str = "some_string"; + SaxCountdown s(1); + CHECK(json::sax_parse(str, &s) == false); + CHECK(json::sax_parse(nlohmann::detail::span_input_adapter(str.c_str(), str.size()), &s) == false); + } + + SECTION("} without value") + { + SaxCountdown s(1); + CHECK(json::sax_parse("{}", &s) == false); + } + + SECTION("} with value") + { + SaxCountdown s(3); + CHECK(json::sax_parse("{\"k1\": true}", &s) == false); + } + + SECTION("second key") + { + SaxCountdown s(3); + CHECK(json::sax_parse("{\"k1\": true, \"k2\": false}", &s) == false); + } + + SECTION("] without value") + { + SaxCountdown s(1); + CHECK(json::sax_parse("[]", &s) == false); + } + + SECTION("] with value") + { + SaxCountdown s(2); + CHECK(json::sax_parse("[1]", &s) == false); + } + + SECTION("float") + { + SaxCountdown s(0); + CHECK(json::sax_parse("3.14", &s) == false); + } + + SECTION("false") + { + SaxCountdown s(0); + CHECK(json::sax_parse("false", &s) == false); + } + + SECTION("null") + { + SaxCountdown s(0); + CHECK(json::sax_parse("null", &s) == false); + } + + SECTION("true") + { + SaxCountdown s(0); + CHECK(json::sax_parse("true", &s) == false); + } + + SECTION("unsigned") + { + SaxCountdown s(0); + CHECK(json::sax_parse("12", &s) == false); + } + + SECTION("integer") + { + SaxCountdown s(0); + CHECK(json::sax_parse("-12", &s) == false); + } + + SECTION("string") + { + SaxCountdown s(0); + CHECK(json::sax_parse("\"foo\"", &s) == false); + } + } + } + + SECTION("error messages for comments") + { + json _; + CHECK_THROWS_WITH_AS(_ = json::parse("/a", nullptr, true, true), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid comment; expecting '/' or '*' after '/'; last read: '/a'", json::parse_error); + CHECK_THROWS_WITH_AS(_ = json::parse("/*", nullptr, true, true), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid comment; missing closing '*/'; last read: '/*<U+0000>'", json::parse_error); + } +} |