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374 lines
11 KiB
C++
374 lines
11 KiB
C++
/*
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__ _____ _____ _____
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__| | __| | | | JSON for Modern C++ (test suite)
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| | |__ | | | | | | version 2.1.0
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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) 2013-2017 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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TEST_CASE("object inspection")
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{
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SECTION("convenience type checker")
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{
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SECTION("object")
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{
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json j {{"foo", 1}, {"bar", false}};
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CHECK(not j.is_null());
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CHECK(not j.is_boolean());
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CHECK(not j.is_number());
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CHECK(not j.is_number_integer());
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CHECK(not j.is_number_unsigned());
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CHECK(not j.is_number_float());
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CHECK(j.is_object());
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CHECK(not j.is_array());
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CHECK(not j.is_string());
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CHECK(not j.is_discarded());
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CHECK(not j.is_primitive());
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CHECK(j.is_structured());
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}
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SECTION("array")
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{
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json j {"foo", 1, 1u, 42.23, false};
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CHECK(not j.is_null());
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CHECK(not j.is_boolean());
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CHECK(not j.is_number());
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CHECK(not j.is_number_integer());
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CHECK(not j.is_number_unsigned());
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CHECK(not j.is_number_float());
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CHECK(not j.is_object());
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CHECK(j.is_array());
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CHECK(not j.is_string());
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CHECK(not j.is_discarded());
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CHECK(not j.is_primitive());
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CHECK(j.is_structured());
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}
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SECTION("null")
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{
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json j(nullptr);
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CHECK(j.is_null());
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CHECK(not j.is_boolean());
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CHECK(not j.is_number());
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CHECK(not j.is_number_integer());
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CHECK(not j.is_number_unsigned());
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CHECK(not j.is_number_float());
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CHECK(not j.is_object());
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CHECK(not j.is_array());
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CHECK(not j.is_string());
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CHECK(not j.is_discarded());
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CHECK(j.is_primitive());
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CHECK(not j.is_structured());
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}
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SECTION("boolean")
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{
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json j(true);
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CHECK(not j.is_null());
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CHECK(j.is_boolean());
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CHECK(not j.is_number());
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CHECK(not j.is_number_integer());
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CHECK(not j.is_number_unsigned());
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CHECK(not j.is_number_float());
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CHECK(not j.is_object());
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CHECK(not j.is_array());
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CHECK(not j.is_string());
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CHECK(not j.is_discarded());
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CHECK(j.is_primitive());
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CHECK(not j.is_structured());
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}
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SECTION("string")
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{
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json j("Hello world");
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CHECK(not j.is_null());
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CHECK(not j.is_boolean());
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CHECK(not j.is_number());
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CHECK(not j.is_number_integer());
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CHECK(not j.is_number_unsigned());
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CHECK(not j.is_number_float());
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CHECK(not j.is_object());
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CHECK(not j.is_array());
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CHECK(j.is_string());
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CHECK(not j.is_discarded());
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CHECK(j.is_primitive());
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CHECK(not j.is_structured());
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}
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SECTION("number (integer)")
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{
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json j(42);
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CHECK(not j.is_null());
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CHECK(not j.is_boolean());
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CHECK(j.is_number());
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CHECK(j.is_number_integer());
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CHECK(not j.is_number_unsigned());
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CHECK(not j.is_number_float());
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CHECK(not j.is_object());
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CHECK(not j.is_array());
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CHECK(not j.is_string());
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CHECK(not j.is_discarded());
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CHECK(j.is_primitive());
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CHECK(not j.is_structured());
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}
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SECTION("number (unsigned)")
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{
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json j(42u);
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CHECK(not j.is_null());
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CHECK(not j.is_boolean());
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CHECK(j.is_number());
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CHECK(j.is_number_integer());
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CHECK(j.is_number_unsigned());
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CHECK(not j.is_number_float());
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CHECK(not j.is_object());
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CHECK(not j.is_array());
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CHECK(not j.is_string());
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CHECK(not j.is_discarded());
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CHECK(j.is_primitive());
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CHECK(not j.is_structured());
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}
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SECTION("number (floating-point)")
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{
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json j(42.23);
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CHECK(not j.is_null());
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CHECK(not j.is_boolean());
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CHECK(j.is_number());
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CHECK(not j.is_number_integer());
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CHECK(not j.is_number_unsigned());
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CHECK(j.is_number_float());
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CHECK(not j.is_object());
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CHECK(not j.is_array());
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CHECK(not j.is_string());
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CHECK(not j.is_discarded());
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CHECK(j.is_primitive());
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CHECK(not j.is_structured());
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}
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SECTION("discarded")
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{
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json j(json::value_t::discarded);
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CHECK(not j.is_null());
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CHECK(not j.is_boolean());
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CHECK(not j.is_number());
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CHECK(not j.is_number_integer());
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CHECK(not j.is_number_unsigned());
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CHECK(not j.is_number_float());
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CHECK(not j.is_object());
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CHECK(not j.is_array());
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CHECK(not j.is_string());
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CHECK(j.is_discarded());
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CHECK(not j.is_primitive());
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CHECK(not j.is_structured());
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}
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}
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SECTION("serialization")
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{
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json j {{"object", json::object()}, {"array", {1, 2, 3, 4}}, {"number", 42}, {"boolean", false}, {"null", nullptr}, {"string", "Hello world"} };
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SECTION("no indent / indent=-1")
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{
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CHECK(j.dump() ==
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"{\"array\":[1,2,3,4],\"boolean\":false,\"null\":null,\"number\":42,\"object\":{},\"string\":\"Hello world\"}");
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CHECK(j.dump() == j.dump(-1));
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}
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SECTION("indent=0")
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{
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CHECK(j.dump(0) ==
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"{\n\"array\": [\n1,\n2,\n3,\n4\n],\n\"boolean\": false,\n\"null\": null,\n\"number\": 42,\n\"object\": {},\n\"string\": \"Hello world\"\n}");
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}
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SECTION("indent=4")
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{
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CHECK(j.dump(4) ==
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"{\n \"array\": [\n 1,\n 2,\n 3,\n 4\n ],\n \"boolean\": false,\n \"null\": null,\n \"number\": 42,\n \"object\": {},\n \"string\": \"Hello world\"\n}");
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}
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SECTION("dump and floating-point numbers")
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{
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auto s = json(42.23).dump();
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CHECK(s.find("42.23") != std::string::npos);
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}
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SECTION("dump and small floating-point numbers")
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{
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auto s = json(1.23456e-78).dump();
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CHECK(s.find("1.23456e-78") != std::string::npos);
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}
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SECTION("dump and non-ASCII characters")
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{
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CHECK(json("ä").dump() == "\"ä\"");
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CHECK(json("Ö").dump() == "\"Ö\"");
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CHECK(json("❤️").dump() == "\"❤️\"");
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}
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SECTION("serialization of discarded element")
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{
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json j_discarded(json::value_t::discarded);
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CHECK(j_discarded.dump() == "<discarded>");
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}
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SECTION("check that precision is reset after serialization")
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{
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// create stringstream and set precision
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std::stringstream ss;
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ss.precision(3);
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ss << 3.141592653589793 << std::fixed;
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CHECK(ss.str() == "3.14");
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// reset stringstream
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ss.str(std::string());
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// use stringstream for JSON serialization
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json j_number = 3.141592653589793;
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ss << j_number;
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// check that precision has been overridden during serialization
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CHECK(ss.str() == "3.141592653589793");
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// check that precision has been restored
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CHECK(ss.precision() == 3);
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}
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}
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SECTION("return the type of the object (explicit)")
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{
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SECTION("null")
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{
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json j = nullptr;
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CHECK(j.type() == json::value_t::null);
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}
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SECTION("object")
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{
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json j = {{"foo", "bar"}};
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CHECK(j.type() == json::value_t::object);
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}
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SECTION("array")
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{
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json j = {1, 2, 3, 4};
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CHECK(j.type() == json::value_t::array);
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}
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SECTION("boolean")
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{
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json j = true;
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CHECK(j.type() == json::value_t::boolean);
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}
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SECTION("string")
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{
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json j = "Hello world";
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CHECK(j.type() == json::value_t::string);
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}
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SECTION("number (integer)")
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{
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json j = 23;
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CHECK(j.type() == json::value_t::number_integer);
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}
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SECTION("number (unsigned)")
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{
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json j = 23u;
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CHECK(j.type() == json::value_t::number_unsigned);
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}
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SECTION("number (floating-point)")
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{
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json j = 42.23;
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CHECK(j.type() == json::value_t::number_float);
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}
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}
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SECTION("return the type of the object (implicit)")
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{
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SECTION("null")
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{
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json j = nullptr;
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json::value_t t = j;
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CHECK(t == j.type());
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}
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SECTION("object")
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{
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json j = {{"foo", "bar"}};
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json::value_t t = j;
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CHECK(t == j.type());
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}
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SECTION("array")
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{
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json j = {1, 2, 3, 4};
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json::value_t t = j;
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CHECK(t == j.type());
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}
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SECTION("boolean")
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{
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json j = true;
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json::value_t t = j;
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CHECK(t == j.type());
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}
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SECTION("string")
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{
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json j = "Hello world";
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json::value_t t = j;
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CHECK(t == j.type());
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}
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SECTION("number (integer)")
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{
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json j = 23;
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json::value_t t = j;
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CHECK(t == j.type());
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}
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SECTION("number (unsigned)")
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{
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json j = 23u;
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json::value_t t = j;
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CHECK(t == j.type());
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}
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SECTION("number (floating-point)")
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{
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json j = 42.23;
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json::value_t t = j;
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CHECK(t == j.type());
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}
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}
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}
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