183 lines
9 KiB
C++
183 lines
9 KiB
C++
/*
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__ _____ _____ _____
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__| | __| | | | JSON for Modern C++ (test suite)
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| | |__ | | | | | | version 2.0.10
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|_____|_____|_____|_|___| https://github.com/nlohmann/json
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Licensed under the MIT License <http://opensource.org/licenses/MIT>.
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Copyright (c) 2013-2016 Niels Lohmann <http://nlohmann.me>.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "catch.hpp"
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#define private public
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#include "json.hpp"
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using nlohmann::json;
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TEST_CASE("lexer class")
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{
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SECTION("scan")
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{
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SECTION("structural characters")
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{
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("["),
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1).scan() == json::lexer::token_type::begin_array);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("]"),
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1).scan() == json::lexer::token_type::end_array);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("{"),
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1).scan() == json::lexer::token_type::begin_object);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("}"),
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1).scan() == json::lexer::token_type::end_object);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>(","),
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1).scan() == json::lexer::token_type::value_separator);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>(":"),
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1).scan() == json::lexer::token_type::name_separator);
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}
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SECTION("literal names")
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{
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("null"),
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4).scan() == json::lexer::token_type::literal_null);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("true"),
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4).scan() == json::lexer::token_type::literal_true);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("false"),
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5).scan() == json::lexer::token_type::literal_false);
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}
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SECTION("numbers")
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{
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("0"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("1"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("2"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("3"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("4"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("5"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("6"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("7"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("8"),
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1).scan() == json::lexer::token_type::value_number);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("9"),
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1).scan() == json::lexer::token_type::value_number);
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}
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SECTION("whitespace")
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{
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// result is end_of_input, because not token is following
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>(" "),
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1).scan() == json::lexer::token_type::end_of_input);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("\t"),
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1).scan() == json::lexer::token_type::end_of_input);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("\n"),
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1).scan() == json::lexer::token_type::end_of_input);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>("\r"),
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1).scan() == json::lexer::token_type::end_of_input);
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CHECK(json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>(" \t\n\r\n\t "),
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7).scan() == json::lexer::token_type::end_of_input);
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}
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}
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SECTION("token_type_name")
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{
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CHECK(json::lexer::token_type_name(json::lexer::token_type::uninitialized) == "<uninitialized>");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::literal_true) == "true literal");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::literal_false) == "false literal");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::literal_null) == "null literal");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::value_string) == "string literal");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::value_number) == "number literal");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::begin_array) == "'['");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::begin_object) == "'{'");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::end_array) == "']'");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::end_object) == "'}'");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::name_separator) == "':'");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::value_separator) == "','");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::parse_error) == "<parse error>");
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CHECK(json::lexer::token_type_name(json::lexer::token_type::end_of_input) == "end of input");
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}
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SECTION("parse errors on first character")
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{
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for (int c = 1; c < 128; ++c)
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{
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// create string from the ASCII code
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const auto s = std::string(1, c);
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// store scan() result
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const auto res = json::lexer(reinterpret_cast<const json::lexer::lexer_char_t*>(s.c_str()),
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1).scan();
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switch (c)
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{
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// single characters that are valid tokens
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case ('['):
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case (']'):
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case ('{'):
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case ('}'):
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case (','):
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case (':'):
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case ('0'):
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case ('1'):
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case ('2'):
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case ('3'):
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case ('4'):
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case ('5'):
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case ('6'):
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case ('7'):
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case ('8'):
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case ('9'):
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{
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CHECK(res != json::lexer::token_type::parse_error);
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break;
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}
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// whitespace
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case (' '):
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case ('\t'):
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case ('\n'):
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case ('\r'):
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{
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CHECK(res == json::lexer::token_type::end_of_input);
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break;
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}
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// anything else is not expected
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default:
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{
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CHECK(res == json::lexer::token_type::parse_error);
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break;
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}
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}
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}
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}
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SECTION("to_unicode")
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{
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CHECK(json::lexer::to_unicode(0x1F4A9) == "💩");
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CHECK_THROWS_AS(json::lexer::to_unicode(0x200000), std::out_of_range);
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CHECK_THROWS_WITH(json::lexer::to_unicode(0x200000), "code points above 0x10FFFF are invalid");
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}
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}
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