/* __ _____ _____ _____ __| | __| | | | JSON for Modern C++ (test suite) | | |__ | | | | | | version 3.2.0 |_____|_____|_____|_|___| https://github.com/nlohmann/json Licensed under the MIT License . SPDX-License-Identifier: MIT Copyright (c) 2013-2018 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" #define private public #include using nlohmann::json; #include class SaxEventLogger { public: bool null() { events.push_back("null()"); return true; } bool boolean(bool val) { events.push_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, 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 start_object(std::size_t elements) { if (elements == std::size_t(-1)) { events.push_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.push_back("end_object()"); return true; } bool start_array(std::size_t elements) { if (elements == std::size_t(-1)) { events.push_back("start_array()"); } else { events.push_back("start_array(" + std::to_string(elements) + ")"); } return true; } bool end_array() { events.push_back("end_array()"); return true; } bool parse_error(std::size_t position, const std::string&, const json::exception&) { errored = true; events.push_back("parse_error(" + std::to_string(position) + ")"); return false; } std::vector events; 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) override { return events_left-- > 0; } bool number_integer(json::number_integer_t) override { return events_left-- > 0; } bool number_unsigned(json::number_unsigned_t) override { return events_left-- > 0; } bool number_float(json::number_float_t, const std::string&) override { return events_left-- > 0; } bool string(std::string&) override { return events_left-- > 0; } bool start_object(std::size_t) override { return events_left-- > 0; } bool key(std::string&) override { return events_left-- > 0; } bool end_object() override { return events_left-- > 0; } bool start_array(std::size_t) override { return events_left-- > 0; } bool end_array() override { return events_left-- > 0; } bool parse_error(std::size_t, const std::string&, const json::exception&) override { return false; } private: int events_left = 0; }; json parser_helper(const std::string& s); bool accept_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 ocurred // -> 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 sdp(j_sax); json::sax_parse(s, &sdp); CHECK(j_sax == j); 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 = not 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) == not el.errored); // 5. parse with simple callback json::parser_callback_t cb = [](int, json::parse_event_t, json&) { return true; }; json j_cb = json::parse(s, cb, false); const bool ok_noexcept_cb = not j_cb.is_discarded(); // 6. check if this approach came to the same result CHECK(ok_noexcept == ok_noexcept_cb); // 7. return result return ok_accept; } 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_AS(parser_helper("\"\t\""), json::parse_error&); CHECK_THROWS_WITH(parser_helper("\"\t\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); // error: newline in string CHECK_THROWS_AS(parser_helper("\"\n\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\r\""), json::parse_error&); CHECK_THROWS_WITH(parser_helper("\"\n\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\r\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); // error: backspace in string CHECK_THROWS_AS(parser_helper("\"\b\""), json::parse_error&); CHECK_THROWS_WITH(parser_helper("\"\b\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); // 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_AS(parser_helper("\"\x00\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x01\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x02\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x03\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x04\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x05\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x06\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x07\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x08\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x09\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x0a\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x0b\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x0c\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x0d\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x0e\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x0f\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x10\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x11\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x12\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x13\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x14\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x15\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x16\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x17\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x18\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x19\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x1a\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x1b\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x1c\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x1d\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x1e\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\x1f\""), json::parse_error&); CHECK_THROWS_WITH(parser_helper("\"\x00\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: missing closing quote; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x01\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x02\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x03\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x04\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x05\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x06\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x07\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x08\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x09\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x0a\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x0b\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x0c\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x0d\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x0e\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x0f\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x10\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x11\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x12\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x13\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x14\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x15\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x16\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x17\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x18\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x19\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x1a\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x1b\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x1c\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x1d\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x1e\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\x1f\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); 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'; CHECK_THROWS_AS(json::parse(s.begin(), s.end()), json::parse_error&); CHECK_THROWS_WITH(json::parse(s.begin(), s.end()), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: control character must be escaped; last read: '\"'"); } } 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() == "\x01"); CHECK(parser_helper("\"\\u000a\"").get() == "\n"); CHECK(parser_helper("\"\\u00b0\"").get() == "°"); CHECK(parser_helper("\"\\u0c00\"").get() == "ఀ"); CHECK(parser_helper("\"\\ud000\"").get() == "퀀"); CHECK(parser_helper("\"\\u000E\"").get() == "\x0E"); CHECK(parser_helper("\"\\u00F0\"").get() == "ð"); CHECK(parser_helper("\"\\u0100\"").get() == "Ā"); CHECK(parser_helper("\"\\u2000\"").get() == " "); CHECK(parser_helper("\"\\uFFFF\"").get() == "￿"); CHECK(parser_helper("\"\\u20AC\"").get() == "€"); CHECK(parser_helper("\"€\"").get() == "€"); CHECK(parser_helper("\"🎈\"").get() == "🎈"); CHECK(parser_helper("\"\\ud80c\\udc60\"").get() == u8"\U00013060"); CHECK(parser_helper("\"\\ud83c\\udf1e\"").get() == "🌞"); } } 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 RFC7159, 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() == -9007199254740991); // (2**53)-1 CHECK(parser_helper("9007199254740991").get() == 9007199254740991); } SECTION("over the edge cases") // issue #178 - Integer conversion to unsigned (incorrect handling of 64 bit integers) { // While RFC7159, 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 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() == -9223372036854775807 - 1); // (2**63)-1 CHECK(parser_helper("9223372036854775807").get() == 9223372036854775807); // (2**64)-1 CHECK(parser_helper("18446744073709551615").get() == 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_AS(parser_helper("1.18973e+4932") == json(), json::out_of_range&); CHECK_THROWS_WITH(parser_helper("1.18973e+4932") == json(), "[json.exception.out_of_range.406] number overflow parsing '1.18973e+4932'"); } SECTION("invalid numbers") { CHECK_THROWS_AS(parser_helper("01"), json::parse_error&); CHECK_THROWS_AS(parser_helper("--1"), json::parse_error&); CHECK_THROWS_AS(parser_helper("1."), json::parse_error&); CHECK_THROWS_AS(parser_helper("1E"), json::parse_error&); CHECK_THROWS_AS(parser_helper("1E-"), json::parse_error&); CHECK_THROWS_AS(parser_helper("1.E1"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-1E"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0E#"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0E-#"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0#"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0.0:"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0.0Z"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0E123:"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0e0-:"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0e-:"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0f"), json::parse_error&); // 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(parser_helper("01"), "[json.exception.parse_error.101] parse error at 2: syntax error - unexpected number literal; expected end of input"); CHECK_THROWS_WITH(parser_helper("-01"), "[json.exception.parse_error.101] parse error at 3: syntax error - unexpected number literal; expected end of input"); CHECK_THROWS_WITH(parser_helper("--1"), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid number; expected digit after '-'; last read: '--'"); CHECK_THROWS_WITH(parser_helper("1."), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected digit after '.'; last read: '1.'"); CHECK_THROWS_WITH(parser_helper("1E"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '1E'"); CHECK_THROWS_WITH(parser_helper("1E-"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid number; expected digit after exponent sign; last read: '1E-'"); CHECK_THROWS_WITH(parser_helper("1.E1"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected digit after '.'; last read: '1.E'"); CHECK_THROWS_WITH(parser_helper("-1E"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '-1E'"); CHECK_THROWS_WITH(parser_helper("-0E#"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '-0E#'"); CHECK_THROWS_WITH(parser_helper("-0E-#"), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid number; expected digit after exponent sign; last read: '-0E-#'"); CHECK_THROWS_WITH(parser_helper("-0#"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid literal; last read: '-0#'; expected end of input"); CHECK_THROWS_WITH(parser_helper("-0.0:"), "[json.exception.parse_error.101] parse error at 5: syntax error - unexpected ':'; expected end of input"); CHECK_THROWS_WITH(parser_helper("-0.0Z"), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid literal; last read: '-0.0Z'; expected end of input"); CHECK_THROWS_WITH(parser_helper("-0E123:"), "[json.exception.parse_error.101] parse error at 7: syntax error - unexpected ':'; expected end of input"); CHECK_THROWS_WITH(parser_helper("-0e0-:"), "[json.exception.parse_error.101] parse error at 6: syntax error - invalid number; expected digit after '-'; last read: '-:'; expected end of input"); CHECK_THROWS_WITH(parser_helper("-0e-:"), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid number; expected digit after exponent sign; last read: '-0e-:'"); CHECK_THROWS_WITH(parser_helper("-0f"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid literal; last read: '-0f'; expected end of input"); } } } 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); 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 RFC7159, 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 RFC7159, 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 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(not 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_AS(parser_helper("0."), json::parse_error&); CHECK_THROWS_AS(parser_helper("-"), json::parse_error&); CHECK_THROWS_AS(parser_helper("--"), json::parse_error&); CHECK_THROWS_AS(parser_helper("-0."), json::parse_error&); CHECK_THROWS_AS(parser_helper("-."), json::parse_error&); CHECK_THROWS_AS(parser_helper("-:"), json::parse_error&); CHECK_THROWS_AS(parser_helper("0.:"), json::parse_error&); CHECK_THROWS_AS(parser_helper("e."), json::parse_error&); CHECK_THROWS_AS(parser_helper("1e."), json::parse_error&); CHECK_THROWS_AS(parser_helper("1e/"), json::parse_error&); CHECK_THROWS_AS(parser_helper("1e:"), json::parse_error&); CHECK_THROWS_AS(parser_helper("1E."), json::parse_error&); CHECK_THROWS_AS(parser_helper("1E/"), json::parse_error&); CHECK_THROWS_AS(parser_helper("1E:"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("0."), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected digit after '.'; last read: '0.'"); CHECK_THROWS_WITH(parser_helper("-"), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid number; expected digit after '-'; last read: '-'"); CHECK_THROWS_WITH(parser_helper("--"), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid number; expected digit after '-'; last read: '--'"); CHECK_THROWS_WITH(parser_helper("-0."), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid number; expected digit after '.'; last read: '-0.'"); CHECK_THROWS_WITH(parser_helper("-."), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid number; expected digit after '-'; last read: '-.'"); CHECK_THROWS_WITH(parser_helper("-:"), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid number; expected digit after '-'; last read: '-:'"); CHECK_THROWS_WITH(parser_helper("0.:"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected digit after '.'; last read: '0.:'"); CHECK_THROWS_WITH(parser_helper("e."), "[json.exception.parse_error.101] parse error at 1: syntax error - invalid literal; last read: 'e'"); CHECK_THROWS_WITH(parser_helper("1e."), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '1e.'"); CHECK_THROWS_WITH(parser_helper("1e/"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '1e/'"); CHECK_THROWS_WITH(parser_helper("1e:"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '1e:'"); CHECK_THROWS_WITH(parser_helper("1E."), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '1E.'"); CHECK_THROWS_WITH(parser_helper("1E/"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '1E/'"); CHECK_THROWS_WITH(parser_helper("1E:"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid number; expected '+', '-', or digit after exponent; last read: '1E:'"); // unexpected end of null CHECK_THROWS_AS(parser_helper("n"), json::parse_error&); CHECK_THROWS_AS(parser_helper("nu"), json::parse_error&); CHECK_THROWS_AS(parser_helper("nul"), json::parse_error&); CHECK_THROWS_AS(parser_helper("nulk"), json::parse_error&); CHECK_THROWS_AS(parser_helper("nulm"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("n"), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid literal; last read: 'n'"); CHECK_THROWS_WITH(parser_helper("nu"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid literal; last read: 'nu'"); CHECK_THROWS_WITH(parser_helper("nul"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid literal; last read: 'nul'"); CHECK_THROWS_WITH(parser_helper("nulk"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid literal; last read: 'nulk'"); CHECK_THROWS_WITH(parser_helper("nulm"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid literal; last read: 'nulm'"); // unexpected end of true CHECK_THROWS_AS(parser_helper("t"), json::parse_error&); CHECK_THROWS_AS(parser_helper("tr"), json::parse_error&); CHECK_THROWS_AS(parser_helper("tru"), json::parse_error&); CHECK_THROWS_AS(parser_helper("trud"), json::parse_error&); CHECK_THROWS_AS(parser_helper("truf"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("t"), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid literal; last read: 't'"); CHECK_THROWS_WITH(parser_helper("tr"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid literal; last read: 'tr'"); CHECK_THROWS_WITH(parser_helper("tru"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid literal; last read: 'tru'"); CHECK_THROWS_WITH(parser_helper("trud"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid literal; last read: 'trud'"); CHECK_THROWS_WITH(parser_helper("truf"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid literal; last read: 'truf'"); // unexpected end of false CHECK_THROWS_AS(parser_helper("f"), json::parse_error&); CHECK_THROWS_AS(parser_helper("fa"), json::parse_error&); CHECK_THROWS_AS(parser_helper("fal"), json::parse_error&); CHECK_THROWS_AS(parser_helper("fals"), json::parse_error&); CHECK_THROWS_AS(parser_helper("falsd"), json::parse_error&); CHECK_THROWS_AS(parser_helper("falsf"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("f"), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid literal; last read: 'f'"); CHECK_THROWS_WITH(parser_helper("fa"), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid literal; last read: 'fa'"); CHECK_THROWS_WITH(parser_helper("fal"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid literal; last read: 'fal'"); CHECK_THROWS_WITH(parser_helper("fals"), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid literal; last read: 'fals'"); CHECK_THROWS_WITH(parser_helper("falsd"), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid literal; last read: 'falsd'"); CHECK_THROWS_WITH(parser_helper("falsf"), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid literal; last read: 'falsf'"); // missing/unexpected end of array CHECK_THROWS_AS(parser_helper("["), json::parse_error&); CHECK_THROWS_AS(parser_helper("[1"), json::parse_error&); CHECK_THROWS_AS(parser_helper("[1,"), json::parse_error&); CHECK_THROWS_AS(parser_helper("[1,]"), json::parse_error&); CHECK_THROWS_AS(parser_helper("]"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("["), "[json.exception.parse_error.101] parse error at 2: syntax error - unexpected end of input; expected '[', '{', or a literal"); CHECK_THROWS_WITH(parser_helper("[1"), "[json.exception.parse_error.101] parse error at 3: syntax error - unexpected end of input; expected ']'"); CHECK_THROWS_WITH(parser_helper("[1,"), "[json.exception.parse_error.101] parse error at 4: syntax error - unexpected end of input; expected '[', '{', or a literal"); CHECK_THROWS_WITH(parser_helper("[1,]"), "[json.exception.parse_error.101] parse error at 4: syntax error - unexpected ']'; expected '[', '{', or a literal"); CHECK_THROWS_WITH(parser_helper("]"), "[json.exception.parse_error.101] parse error at 1: syntax error - unexpected ']'; expected '[', '{', or a literal"); // missing/unexpected end of object CHECK_THROWS_AS(parser_helper("{"), json::parse_error&); CHECK_THROWS_AS(parser_helper("{\"foo\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("{\"foo\":"), json::parse_error&); CHECK_THROWS_AS(parser_helper("{\"foo\":}"), json::parse_error&); CHECK_THROWS_AS(parser_helper("{\"foo\":1,}"), json::parse_error&); CHECK_THROWS_AS(parser_helper("}"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("{"), "[json.exception.parse_error.101] parse error at 2: syntax error - unexpected end of input; expected string literal"); CHECK_THROWS_WITH(parser_helper("{\"foo\""), "[json.exception.parse_error.101] parse error at 7: syntax error - unexpected end of input; expected ':'"); CHECK_THROWS_WITH(parser_helper("{\"foo\":"), "[json.exception.parse_error.101] parse error at 8: syntax error - unexpected end of input; expected '[', '{', or a literal"); CHECK_THROWS_WITH(parser_helper("{\"foo\":}"), "[json.exception.parse_error.101] parse error at 8: syntax error - unexpected '}'; expected '[', '{', or a literal"); CHECK_THROWS_WITH(parser_helper("{\"foo\":1,}"), "[json.exception.parse_error.101] parse error at 10: syntax error - unexpected '}'; expected string literal"); CHECK_THROWS_WITH(parser_helper("}"), "[json.exception.parse_error.101] parse error at 1: syntax error - unexpected '}'; expected '[', '{', or a literal"); // missing/unexpected end of string CHECK_THROWS_AS(parser_helper("\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\u\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\u0\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\u01\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\u012\""), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\u"), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\u0"), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\u01"), json::parse_error&); CHECK_THROWS_AS(parser_helper("\"\\u012"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("\""), "[json.exception.parse_error.101] parse error at 2: syntax error - invalid string: missing closing quote; last read: '\"'"); CHECK_THROWS_WITH(parser_helper("\"\\\""), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid string: missing closing quote; last read: '\"\\\"'"); CHECK_THROWS_WITH(parser_helper("\"\\u\""), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u\"'"); CHECK_THROWS_WITH(parser_helper("\"\\u0\""), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u0\"'"); CHECK_THROWS_WITH(parser_helper("\"\\u01\""), "[json.exception.parse_error.101] parse error at 6: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u01\"'"); CHECK_THROWS_WITH(parser_helper("\"\\u012\""), "[json.exception.parse_error.101] parse error at 7: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u012\"'"); CHECK_THROWS_WITH(parser_helper("\"\\u"), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u'"); CHECK_THROWS_WITH(parser_helper("\"\\u0"), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u0'"); CHECK_THROWS_WITH(parser_helper("\"\\u01"), "[json.exception.parse_error.101] parse error at 6: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u01'"); CHECK_THROWS_WITH(parser_helper("\"\\u012"), "[json.exception.parse_error.101] parse error at 7: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u012'"); // invalid escapes for (int c = 1; c < 128; ++c) { auto s = std::string("\"\\") + std::string(1, static_cast(c)) + "\""; switch (c) { // valid escapes case ('"'): case ('\\'): case ('/'): case ('b'): case ('f'): case ('n'): case ('r'): case ('t'): { CHECK_NOTHROW(parser_helper(s.c_str())); 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.c_str()), json::parse_error&); // only check error message if c is not a control character if (c > 0x1f) { CHECK_THROWS_WITH(parser_helper(s.c_str()), "[json.exception.parse_error.101] parse error at 3: syntax error - invalid string: forbidden character after backslash; last read: '\"\\" + std::string(1, static_cast(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 s = "\"\\u"; // create a string with the iterated character at each position auto s1 = s + "000" + std::string(1, static_cast(c)) + "\""; auto s2 = s + "00" + std::string(1, static_cast(c)) + "0\""; auto s3 = s + "0" + std::string(1, static_cast(c)) + "00\""; auto s4 = s + std::string(1, static_cast(c)) + "000\""; if (valid(c)) { CAPTURE(s1); CHECK_NOTHROW(parser_helper(s1.c_str())); CAPTURE(s2); CHECK_NOTHROW(parser_helper(s2.c_str())); CAPTURE(s3); CHECK_NOTHROW(parser_helper(s3.c_str())); CAPTURE(s4); CHECK_NOTHROW(parser_helper(s4.c_str())); } else { CAPTURE(s1); CHECK_THROWS_AS(parser_helper(s1.c_str()), json::parse_error&); // only check error message if c is not a control character if (c > 0x1f) { CHECK_THROWS_WITH(parser_helper(s1.c_str()), "[json.exception.parse_error.101] parse error at 7: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s1.substr(0, 7) + "'"); } CAPTURE(s2); CHECK_THROWS_AS(parser_helper(s2.c_str()), json::parse_error&); // only check error message if c is not a control character if (c > 0x1f) { CHECK_THROWS_WITH(parser_helper(s2.c_str()), "[json.exception.parse_error.101] parse error at 6: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s2.substr(0, 6) + "'"); } CAPTURE(s3); CHECK_THROWS_AS(parser_helper(s3.c_str()), json::parse_error&); // only check error message if c is not a control character if (c > 0x1f) { CHECK_THROWS_WITH(parser_helper(s3.c_str()), "[json.exception.parse_error.101] parse error at 5: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s3.substr(0, 5) + "'"); } CAPTURE(s4); CHECK_THROWS_AS(parser_helper(s4.c_str()), json::parse_error&); // only check error message if c is not a control character if (c > 0x1f) { CHECK_THROWS_WITH(parser_helper(s4.c_str()), "[json.exception.parse_error.101] parse error at 4: syntax error - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s4.substr(0, 4) + "'"); } } } } // missing part of a surrogate pair CHECK_THROWS_AS(json::parse("\"\\uD80C\""), json::parse_error&); CHECK_THROWS_WITH(json::parse("\"\\uD80C\""), "[json.exception.parse_error.101] parse error at 8: syntax error - invalid string: surrogate U+DC00..U+DFFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\"'"); // invalid surrogate pair CHECK_THROWS_AS(json::parse("\"\\uD80C\\uD80C\""), json::parse_error&); CHECK_THROWS_AS(json::parse("\"\\uD80C\\u0000\""), json::parse_error&); CHECK_THROWS_AS(json::parse("\"\\uD80C\\uFFFF\""), json::parse_error&); CHECK_THROWS_WITH(json::parse("\"\\uD80C\\uD80C\""), "[json.exception.parse_error.101] parse error at 13: syntax error - invalid string: surrogate U+DC00..U+DFFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\uD80C'"); CHECK_THROWS_WITH(json::parse("\"\\uD80C\\u0000\""), "[json.exception.parse_error.101] parse error at 13: syntax error - invalid string: surrogate U+DC00..U+DFFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\u0000'"); CHECK_THROWS_WITH(json::parse("\"\\uD80C\\uFFFF\""), "[json.exception.parse_error.101] parse error at 13: syntax error - invalid string: surrogate U+DC00..U+DFFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\uFFFF'"); } 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); // invalid escapes for (int c = 1; c < 128; ++c) { auto s = std::string("\"\\") + std::string(1, static_cast(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(std::string(s.c_str()))).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(std::string(s.c_str()))).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 s = "\"\\u"; // create a string with the iterated character at each position auto s1 = s + "000" + std::string(1, static_cast(c)) + "\""; auto s2 = s + "00" + std::string(1, static_cast(c)) + "0\""; auto s3 = s + "0" + std::string(1, static_cast(c)) + "00\""; auto s4 = s + std::string(1, static_cast(c)) + "000\""; if (valid(c)) { CAPTURE(s1); CHECK(json::parser(nlohmann::detail::input_adapter(std::string(s1.c_str()))).accept()); CAPTURE(s2); CHECK(json::parser(nlohmann::detail::input_adapter(std::string(s2.c_str()))).accept()); CAPTURE(s3); CHECK(json::parser(nlohmann::detail::input_adapter(std::string(s3.c_str()))).accept()); CAPTURE(s4); CHECK(json::parser(nlohmann::detail::input_adapter(std::string(s4.c_str()))).accept()); } else { CAPTURE(s1); CHECK(json::parser(nlohmann::detail::input_adapter(std::string(s1.c_str()))).accept() == false); CAPTURE(s2); CHECK(json::parser(nlohmann::detail::input_adapter(std::string(s2.c_str()))).accept() == false); CAPTURE(s3); CHECK(json::parser(nlohmann::detail::input_adapter(std::string(s3.c_str()))).accept() == false); CAPTURE(s4); CHECK(json::parser(nlohmann::detail::input_adapter(std::string(s4.c_str()))).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 preceeds the first key CHECK_THROWS_AS(parser_helper("{,\"key\": false}"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("{,\"key\": false}"), "[json.exception.parse_error.101] parse error at 2: syntax error - unexpected ','; expected string literal"); // test case to make sure an object is properly closed CHECK_THROWS_AS(parser_helper("[{\"key\": false true]"), json::parse_error&); CHECK_THROWS_WITH(parser_helper("[{\"key\": false true]"), "[json.exception.parse_error.101] parse error at 19: syntax error - unexpected true literal; expected '}'"); // test case to make sure the callback is properly evaluated after reading a key { json::parser_callback_t cb = [](int, json::parse_event_t event, json&) { if (event == json::parse_event_t::key) { return false; } else { return true; } }; json x = json::parse("{\"key\": false}", cb); CHECK(x == json::object()); } } SECTION("callback function") { auto s_object = R"( { "foo": 2, "bar": { "baz": 1 } } )"; auto s_array = R"( [1,2,[3,4,5],4,5] )"; SECTION("filter nothing") { json j_object = json::parse(s_object, [](int, json::parse_event_t, const json&) { return true; }); CHECK (j_object == json({{"foo", 2}, {"bar", {{"baz", 1}}}})); json j_array = json::parse(s_array, [](int, json::parse_event_t, const json&) { return true; }); CHECK (j_array == json({1, 2, {3, 4, 5}, 4, 5})); } SECTION("filter everything") { json j_object = json::parse(s_object, [](int, json::parse_event_t, const json&) { return false; }); // the top-level object will be discarded, leaving a null CHECK (j_object.is_null()); json j_array = json::parse(s_array, [](int, json::parse_event_t, const json&) { return false; }); // the top-level array will be discarded, leaving a null CHECK (j_array.is_null()); } SECTION("filter specific element") { json j_object = json::parse(s_object, [](int, json::parse_event_t, const json & j) { // filter all number(2) elements if (j == json(2)) { return false; } else { return true; } }); CHECK (j_object == json({{"bar", {{"baz", 1}}}})); json j_array = json::parse(s_array, [](int, json::parse_event_t, const json & j) { if (j == json(2)) { return false; } else { return true; } }); CHECK (j_array == json({1, {3, 4, 5}, 4, 5})); } SECTION("filter specific events") { SECTION("first closing event") { { json j_object = json::parse(s_object, [](int, json::parse_event_t e, const json&) { static bool first = true; if (e == json::parse_event_t::object_end and first) { first = false; return false; } else { return true; } }); // the first completed object will be discarded CHECK (j_object == json({{"foo", 2}})); } { json j_array = json::parse(s_array, [](int, json::parse_event_t e, const json&) { static bool first = true; if (e == json::parse_event_t::array_end and first) { first = false; return false; } else { 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 json j_empty_object = json::parse("{}", [](int, json::parse_event_t e, const json&) { if (e == json::parse_event_t::object_end) { return false; } else { return true; } }); CHECK(j_empty_object == json()); json j_empty_array = json::parse("[]", [](int, json::parse_event_t e, const json&) { if (e == json::parse_event_t::array_end) { return false; } else { return true; } }); CHECK(j_empty_array == json()); } } SECTION("constructing from contiguous containers") { SECTION("from std::vector") { std::vector 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 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'}; 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 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 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 cb = [](int, json::parse_event_t, json&) { return true; }; CHECK(json::parse("{\"foo\": true:", cb, false).is_discarded()); CHECK_THROWS_AS(json::parse("{\"foo\": true:", cb), json::parse_error&); CHECK_THROWS_WITH(json::parse("{\"foo\": true:", cb), "[json.exception.parse_error.101] parse error at 13: syntax error - unexpected ':'; expected '}'"); CHECK_THROWS_AS(json::parse("1.18973e+4932", cb), json::out_of_range&); CHECK_THROWS_WITH(json::parse("1.18973e+4932", cb), "[json.exception.out_of_range.406] number overflow parsing '1.18973e+4932'"); } SECTION("SAX parser") { 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); } } } }