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unit-class_parser.cpp
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1770 lines (1579 loc) · 86.6 KB
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/*
__ _____ _____ _____
__| | __| | | | JSON for Modern C++ (test suite)
| | |__ | | | | | | version 3.7.0
|_____|_____|_____|_|___| https://github.com/nlohmann/json
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
SPDX-License-Identifier: MIT
Copyright (c) 2013-2019 Niels Lohmann <http://nlohmann.me>.
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 "doctest_compatibility.h"
#define private public
#include <nlohmann/json.hpp>
using nlohmann::json;
#undef private
#include <valarray>
namespace
{
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<std::string> 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<json> 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 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>'");
// 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 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>'");
CHECK_THROWS_WITH(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>'");
// 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 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>'");
// 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 line 1, column 2: syntax error while parsing value - invalid string: missing closing quote; last read: '\"'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
CHECK_THROWS_WITH(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>'");
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_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 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>'");
}
}
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>() == u8"\U00013060");
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 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<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 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<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_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 line 1, column 2: syntax error while parsing value - unexpected number literal; expected end of input");
CHECK_THROWS_WITH(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");
CHECK_THROWS_WITH(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: '--'");
CHECK_THROWS_WITH(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.'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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-'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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#'");
CHECK_THROWS_WITH(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-#'");
CHECK_THROWS_WITH(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");
CHECK_THROWS_WITH(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");
CHECK_THROWS_WITH(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");
CHECK_THROWS_WITH(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");
CHECK_THROWS_WITH(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");
CHECK_THROWS_WITH(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-:'");
CHECK_THROWS_WITH(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");
}
}
}
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 line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '0.'");
CHECK_THROWS_WITH(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: '-'");
CHECK_THROWS_WITH(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: '--'");
CHECK_THROWS_WITH(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.'");
CHECK_THROWS_WITH(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: '-.'");
CHECK_THROWS_WITH(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: '-:'");
CHECK_THROWS_WITH(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.:'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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.'");
CHECK_THROWS_WITH(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/'");
CHECK_THROWS_WITH(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:'");
CHECK_THROWS_WITH(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.'");
CHECK_THROWS_WITH(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/'");
CHECK_THROWS_WITH(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:'");
// 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 line 1, column 2: syntax error while parsing value - invalid literal; last read: 'n'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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'");
// 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 line 1, column 2: syntax error while parsing value - invalid literal; last read: 't'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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'");
CHECK_THROWS_WITH(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'");
// 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 line 1, column 2: syntax error while parsing value - invalid literal; last read: 'f'");
CHECK_THROWS_WITH(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'");