mirror of
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520 lines
17 KiB
C++
520 lines
17 KiB
C++
/*
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__ _____ _____ _____
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__| | __| | | | JSON for Modern C++ (test suite)
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| | |__ | | | | | | version 2.0.8
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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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#include "json.hpp"
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using nlohmann::json;
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#include <fstream>
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TEST_CASE("regression tests")
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{
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SECTION("issue #60 - Double quotation mark is not parsed correctly")
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{
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SECTION("escape_dobulequote")
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{
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auto s = "[\"\\\"foo\\\"\"]";
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json j = json::parse(s);
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auto expected = R"(["\"foo\""])"_json;
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CHECK(j == expected);
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}
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}
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SECTION("issue #70 - Handle infinity and NaN cases")
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{
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SECTION("NAN value")
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{
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CHECK(json(NAN) == json());
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CHECK(json(json::number_float_t(NAN)) == json());
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}
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SECTION("infinity")
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{
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CHECK(json(INFINITY) == json());
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CHECK(json(json::number_float_t(INFINITY)) == json());
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}
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}
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SECTION("pull request #71 - handle enum type")
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{
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enum { t = 0 };
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json j = json::array();
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j.push_back(t);
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j.push_back(json::object(
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{
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{"game_type", t}
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}));
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}
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SECTION("issue #76 - dump() / parse() not idempotent")
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{
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// create JSON object
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json fields;
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fields["one"] = std::string("one");
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fields["two"] = std::string("two three");
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fields["three"] = std::string("three \"four\"");
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// create another JSON object by deserializing the serialization
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std::string payload = fields.dump();
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json parsed_fields = json::parse(payload);
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// check individual fields to match both objects
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CHECK(parsed_fields["one"] == fields["one"]);
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CHECK(parsed_fields["two"] == fields["two"]);
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CHECK(parsed_fields["three"] == fields["three"]);
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// check individual fields to match original input
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CHECK(parsed_fields["one"] == std::string("one"));
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CHECK(parsed_fields["two"] == std::string("two three"));
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CHECK(parsed_fields["three"] == std::string("three \"four\""));
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// check equality of the objects
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CHECK(parsed_fields == fields);
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// check equality of the serialized objects
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CHECK(fields.dump() == parsed_fields.dump());
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// check everything in one line
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CHECK(fields == json::parse(fields.dump()));
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}
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SECTION("issue #82 - lexer::get_number return NAN")
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{
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const auto content = R"(
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{
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"Test":"Test1",
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"Number":100,
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"Foo":42.42
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})";
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std::stringstream ss;
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ss << content;
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json j;
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ss >> j;
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std::string test = j["Test"];
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CHECK(test == "Test1");
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int number = j["Number"];
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CHECK(number == 100);
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float foo = j["Foo"];
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CHECK(foo == Approx(42.42));
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}
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SECTION("issue #89 - nonstandard integer type")
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{
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// create JSON class with nonstandard integer number type
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using custom_json =
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nlohmann::basic_json<std::map, std::vector, std::string, bool, int32_t, uint32_t, float>;
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custom_json j;
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j["int_1"] = 1;
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// we need to cast to int to compile with Catch - the value is int32_t
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CHECK(static_cast<int>(j["int_1"]) == 1);
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// tests for correct handling of non-standard integers that overflow the type selected by the user
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// unsigned integer object creation - expected to wrap and still be stored as an integer
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j = 4294967296U; // 2^32
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CHECK(static_cast<int>(j.type()) == static_cast<int>(custom_json::value_t::number_unsigned));
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CHECK(j.get<uint32_t>() == 0); // Wrap
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// unsigned integer parsing - expected to overflow and be stored as a float
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j = custom_json::parse("4294967296"); // 2^32
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CHECK(static_cast<int>(j.type()) == static_cast<int>(custom_json::value_t::number_float));
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CHECK(j.get<float>() == 4294967296.0f);
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// integer object creation - expected to wrap and still be stored as an integer
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j = -2147483649LL; // -2^31-1
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CHECK(static_cast<int>(j.type()) == static_cast<int>(custom_json::value_t::number_integer));
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CHECK(j.get<int32_t>() == 2147483647); // Wrap
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// integer parsing - expected to overflow and be stored as a float with rounding
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j = custom_json::parse("-2147483649"); // -2^31
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CHECK(static_cast<int>(j.type()) == static_cast<int>(custom_json::value_t::number_float));
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CHECK(j.get<float>() == -2147483650.0f);
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}
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SECTION("issue #93 reverse_iterator operator inheritance problem")
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{
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{
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json a = {1, 2, 3};
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json::reverse_iterator rit = a.rbegin();
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++rit;
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CHECK(*rit == json(2));
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CHECK(rit.value() == json(2));
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}
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{
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json a = {1, 2, 3};
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json::reverse_iterator rit = ++a.rbegin();
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}
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{
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json a = {1, 2, 3};
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json::reverse_iterator rit = a.rbegin();
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++rit;
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json b = {0, 0, 0};
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std::transform(rit, a.rend(), b.rbegin(), [](json el)
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{
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return el;
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});
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CHECK(b == json({0, 1, 2}));
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}
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{
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json a = {1, 2, 3};
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json b = {0, 0, 0};
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std::transform(++a.rbegin(), a.rend(), b.rbegin(), [](json el)
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{
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return el;
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});
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CHECK(b == json({0, 1, 2}));
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}
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}
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SECTION("issue #100 - failed to iterator json object with reverse_iterator")
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{
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json config =
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{
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{ "111", 111 },
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{ "112", 112 },
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{ "113", 113 }
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};
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std::stringstream ss;
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for (auto it = config.begin(); it != config.end(); ++it)
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{
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ss << it.key() << ": " << it.value() << '\n';
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}
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for (auto it = config.rbegin(); it != config.rend(); ++it)
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{
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ss << it.key() << ": " << it.value() << '\n';
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}
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CHECK(ss.str() == "111: 111\n112: 112\n113: 113\n113: 113\n112: 112\n111: 111\n");
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}
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SECTION("issue #101 - binary string causes numbers to be dumped as hex")
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{
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int64_t number = 10;
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std::string bytes{"\x00" "asdf\n", 6};
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json j;
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j["int64"] = number;
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j["binary string"] = bytes;
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// make sure the number is really printed as decimal "10" and not as
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// hexadecimal "a"
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CHECK(j.dump() == "{\"binary string\":\"\\u0000asdf\\n\",\"int64\":10}");
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}
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SECTION("issue #111 - subsequent unicode chars")
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{
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std::string bytes{0x7, 0x7};
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json j;
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j["string"] = bytes;
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CHECK(j["string"] == "\u0007\u0007");
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}
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SECTION("issue #144 - implicit assignment to std::string fails")
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{
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json o = {{"name", "value"}};
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std::string s1 = o["name"];
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CHECK(s1 == "value");
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std::string s2;
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s2 = o["name"];
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CHECK(s2 == "value");
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}
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SECTION("issue #146 - character following a surrogate pair is skipped")
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{
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CHECK(json::parse("\"\\ud80c\\udc60abc\"").get<json::string_t>() == u8"\U00013060abc");
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}
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SECTION("issue #171 - Cannot index by key of type static constexpr const char*")
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{
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json j;
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// Non-const access with key as "char []"
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char array_key[] = "Key1";
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CHECK_NOTHROW(j[array_key] = 1);
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CHECK(j[array_key] == json(1));
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// Non-const access with key as "const char[]"
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const char const_array_key[] = "Key2";
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CHECK_NOTHROW(j[const_array_key] = 2);
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CHECK(j[const_array_key] == json(2));
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// Non-const access with key as "char *"
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char _ptr_key[] = "Key3";
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char* ptr_key = &_ptr_key[0];
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CHECK_NOTHROW(j[ptr_key] = 3);
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CHECK(j[ptr_key] == json(3));
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// Non-const access with key as "const char *"
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const char* const_ptr_key = "Key4";
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CHECK_NOTHROW(j[const_ptr_key] = 4);
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CHECK(j[const_ptr_key] == json(4));
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// Non-const access with key as "static constexpr const char *"
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static constexpr const char* constexpr_ptr_key = "Key5";
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CHECK_NOTHROW(j[constexpr_ptr_key] = 5);
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CHECK(j[constexpr_ptr_key] == json(5));
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const json j_const = j;
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// Const access with key as "char []"
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CHECK(j_const[array_key] == json(1));
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// Const access with key as "const char[]"
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CHECK(j_const[const_array_key] == json(2));
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// Const access with key as "char *"
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CHECK(j_const[ptr_key] == json(3));
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// Const access with key as "const char *"
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CHECK(j_const[const_ptr_key] == json(4));
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// Const access with key as "static constexpr const char *"
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CHECK(j_const[constexpr_ptr_key] == json(5));
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}
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SECTION("issue #186 miloyip/nativejson-benchmark: floating-point parsing")
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{
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json j;
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j = json::parse("-0.0");
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CHECK(j.get<double>() == -0.0);
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j = json::parse("2.22507385850720113605740979670913197593481954635164564e-308");
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CHECK(j.get<double>() == 2.2250738585072009e-308);
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j = json::parse("0.999999999999999944488848768742172978818416595458984374");
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CHECK(j.get<double>() == 0.99999999999999989);
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j = json::parse("1.00000000000000011102230246251565404236316680908203126");
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CHECK(j.get<double>() == 1.00000000000000022);
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j = json::parse("7205759403792793199999e-5");
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CHECK(j.get<double>() == 72057594037927928.0);
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j = json::parse("922337203685477529599999e-5");
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CHECK(j.get<double>() == 9223372036854774784.0);
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j = json::parse("1014120480182583464902367222169599999e-5");
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CHECK(j.get<double>() == 10141204801825834086073718800384.0);
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j = json::parse("5708990770823839207320493820740630171355185151999e-3");
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CHECK(j.get<double>() == 5708990770823838890407843763683279797179383808.0);
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// create JSON class with nonstandard float number type
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// float
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nlohmann::basic_json<std::map, std::vector, std::string, bool, int32_t, uint32_t, float> j_float =
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1.23e25f;
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CHECK(j_float.get<float>() == 1.23e25f);
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// double
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nlohmann::basic_json<std::map, std::vector, std::string, bool, int64_t, uint64_t, double> j_double =
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1.23e35f;
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CHECK(j_double.get<double>() == 1.23e35f);
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// long double
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nlohmann::basic_json<std::map, std::vector, std::string, bool, int64_t, uint64_t, long double>
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j_long_double = 1.23e45L;
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CHECK(j_long_double.get<long double>() == 1.23e45L);
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}
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SECTION("issue #228 - double values are serialized with commas as decimal points")
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{
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json j1a = 23.42;
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json j1b = json::parse("23.42");
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json j2a = 2342e-2;
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//issue #230
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//json j2b = json::parse("2342e-2");
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json j3a = 10E3;
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json j3b = json::parse("10E3");
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json j3c = json::parse("10e3");
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// class to create a locale that would use a comma for decimals
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class CommaDecimalSeparator : public std::numpunct<char>
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{
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protected:
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char do_decimal_point() const
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{
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return ',';
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}
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};
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// change locale to mess with decimal points
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std::locale::global(std::locale(std::locale(), new CommaDecimalSeparator));
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CHECK(j1a.dump() == "23.42");
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CHECK(j1b.dump() == "23.42");
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// check if locale is properly reset
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std::stringstream ss;
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ss.imbue(std::locale(std::locale(), new CommaDecimalSeparator));
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ss << 47.11;
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CHECK(ss.str() == "47,11");
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ss << j1a;
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CHECK(ss.str() == "47,1123.42");
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ss << 47.11;
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CHECK(ss.str() == "47,1123.4247,11");
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CHECK(j2a.dump() == "23.42");
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//issue #230
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//CHECK(j2b.dump() == "23.42");
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CHECK(j3a.dump() == "10000");
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CHECK(j3b.dump() == "10000");
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CHECK(j3c.dump() == "10000");
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//CHECK(j3b.dump() == "1E04"); // roundtrip error
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//CHECK(j3c.dump() == "1e04"); // roundtrip error
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}
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SECTION("issue #233 - Can't use basic_json::iterator as a base iterator for std::move_iterator")
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{
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json source = {"a", "b", "c"};
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json expected = {"a", "b"};
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json dest;
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std::copy_n(std::make_move_iterator(source.begin()), 2, std::back_inserter(dest));
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CHECK(dest == expected);
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}
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SECTION("issue #235 - ambiguous overload for 'push_back' and 'operator+='")
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{
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json data = {{"key", "value"}};
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data.push_back({"key2", "value2"});
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data += {"key3", "value3"};
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CHECK(data == json({{"key", "value"}, {"key2", "value2"}, {"key3", "value3"}}));
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}
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SECTION("issue #269 - diff generates incorrect patch when removing multiple array elements")
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{
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json doc = R"( { "arr1": [1, 2, 3, 4] } )"_json;
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json expected = R"( { "arr1": [1, 2] } )"_json;
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// check roundtrip
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CHECK(doc.patch(json::diff(doc, expected)) == expected);
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}
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SECTION("issue #283 - value() does not work with _json_pointer types")
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{
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json j =
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{
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{"object", {{"key1", 1}, {"key2", 2}}},
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};
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int at_integer = j.at("/object/key2"_json_pointer);
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int val_integer = j.value("/object/key2"_json_pointer, 0);
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CHECK(at_integer == val_integer);
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}
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SECTION("issue #304 - Unused variable warning")
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{
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// code triggered a "warning: unused variable" warning and is left
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// here to avoid the warning in the future
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json object;
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json patch = json::array();
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object = object.patch(patch);
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}
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SECTION("issue #306 - Parsing fails without space at end of file")
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{
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for (auto filename :
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{
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"test/data/regression/broken_file.json",
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"test/data/regression/working_file.json"
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})
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{
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CAPTURE(filename);
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json j;
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std::ifstream f(filename);
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CHECK_NOTHROW(j << f);
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}
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}
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SECTION("issue #310 - make json_benchmarks no longer working in 2.0.4")
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{
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for (auto filename :
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{
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"test/data/regression/floats.json",
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"test/data/regression/signed_ints.json",
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"test/data/regression/unsigned_ints.json"
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})
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{
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CAPTURE(filename);
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json j;
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std::ifstream f(filename);
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CHECK_NOTHROW(j << f);
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}
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}
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SECTION("issue #323 - add nested object capabilities to pointers")
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{
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json j;
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j["/this/that/2"_json_pointer] = 27;
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CHECK(j == json({{"this", {{"that", {nullptr, nullptr, 27}}}}}));
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}
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SECTION("issue #329 - serialized value not always can be parsed")
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{
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json j = json::parse("22e2222");
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CHECK(j == json());
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}
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SECTION("issue #366 - json::parse on failed stream gets stuck")
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{
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std::ifstream f("file_not_found.json");
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CHECK_THROWS_AS(json::parse(f), std::invalid_argument);
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}
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SECTION("issue #367 - calling stream at EOF")
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{
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std::stringstream ss;
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json j;
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ss << "123";
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CHECK_NOTHROW(j << ss);
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// see https://github.com/nlohmann/json/issues/367#issuecomment-262841893:
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// ss is not at EOF; this yielded an error before the fix
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// (threw basic_string::append). No, it should just throw
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// a parse error because of the EOF.
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CHECK_THROWS_AS(j << ss, std::invalid_argument);
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CHECK_THROWS_WITH(j << ss, "parse error - unexpected end of input");
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}
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}
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