mirror of
https://github.com/nlohmann/json.git
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Conflicts: include/nlohmann/detail/input/binary_reader.hpp include/nlohmann/detail/input/input_adapters.hpp include/nlohmann/detail/input/lexer.hpp include/nlohmann/detail/output/binary_writer.hpp include/nlohmann/json.hpp single_include/nlohmann/json.hpp
696 lines
28 KiB
C++
696 lines
28 KiB
C++
/*
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__ _____ _____ _____
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__| | __| | | | JSON for Modern C++ (test suite)
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| | |__ | | | | | | version 3.8.0
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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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SPDX-License-Identifier: MIT
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Copyright (c) 2013-2019 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 "doctest_compatibility.h"
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#define private public
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#include <nlohmann/json.hpp>
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using nlohmann::json;
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#undef private
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TEST_CASE("JSON pointers")
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{
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SECTION("errors")
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{
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CHECK_THROWS_AS(json::json_pointer("foo"), json::parse_error&);
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CHECK_THROWS_WITH(json::json_pointer("foo"),
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"[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'");
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CHECK_THROWS_AS(json::json_pointer("/~~"), json::parse_error&);
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CHECK_THROWS_WITH(json::json_pointer("/~~"),
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"[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'");
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CHECK_THROWS_AS(json::json_pointer("/~"), json::parse_error&);
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CHECK_THROWS_WITH(json::json_pointer("/~"),
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"[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'");
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json::json_pointer p;
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CHECK_THROWS_AS(p.top(), json::out_of_range&);
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CHECK_THROWS_WITH(p.top(),
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"[json.exception.out_of_range.405] JSON pointer has no parent");
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CHECK_THROWS_AS(p.pop_back(), json::out_of_range&);
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CHECK_THROWS_WITH(p.pop_back(),
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"[json.exception.out_of_range.405] JSON pointer has no parent");
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SECTION("array index error")
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{
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json v = {1, 2, 3, 4};
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json::json_pointer ptr("/10e");
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CHECK_THROWS_AS(v[ptr], json::out_of_range&);
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CHECK_THROWS_WITH(v[ptr],
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"[json.exception.out_of_range.404] unresolved reference token '10e'");
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}
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}
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SECTION("examples from RFC 6901")
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{
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SECTION("nonconst access")
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{
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json j = R"(
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{
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"foo": ["bar", "baz"],
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"": 0,
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"a/b": 1,
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"c%d": 2,
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"e^f": 3,
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"g|h": 4,
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"i\\j": 5,
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"k\"l": 6,
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" ": 7,
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"m~n": 8
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}
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)"_json;
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// the whole document
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CHECK(j[json::json_pointer()] == j);
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CHECK(j[json::json_pointer("")] == j);
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CHECK(j.contains(json::json_pointer()));
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CHECK(j.contains(json::json_pointer("")));
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// array access
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CHECK(j[json::json_pointer("/foo")] == j["foo"]);
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CHECK(j.contains(json::json_pointer("/foo")));
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CHECK(j[json::json_pointer("/foo/0")] == j["foo"][0]);
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CHECK(j[json::json_pointer("/foo/1")] == j["foo"][1]);
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CHECK(j["/foo/1"_json_pointer] == j["foo"][1]);
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CHECK(j.contains(json::json_pointer("/foo/0")));
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CHECK(j.contains(json::json_pointer("/foo/1")));
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CHECK(!j.contains(json::json_pointer("/foo/3")));
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CHECK(!j.contains(json::json_pointer("/foo/+")));
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CHECK(!j.contains(json::json_pointer("/foo/1+2")));
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CHECK(!j.contains(json::json_pointer("/foo/-")));
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// checked array access
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CHECK(j.at(json::json_pointer("/foo/0")) == j["foo"][0]);
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CHECK(j.at(json::json_pointer("/foo/1")) == j["foo"][1]);
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// empty string access
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CHECK(j[json::json_pointer("/")] == j[""]);
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CHECK(j.contains(json::json_pointer("")));
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CHECK(j.contains(json::json_pointer("/")));
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// other cases
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CHECK(j[json::json_pointer("/ ")] == j[" "]);
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CHECK(j[json::json_pointer("/c%d")] == j["c%d"]);
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CHECK(j[json::json_pointer("/e^f")] == j["e^f"]);
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CHECK(j[json::json_pointer("/g|h")] == j["g|h"]);
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CHECK(j[json::json_pointer("/i\\j")] == j["i\\j"]);
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CHECK(j[json::json_pointer("/k\"l")] == j["k\"l"]);
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// contains
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CHECK(j.contains(json::json_pointer("/ ")));
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CHECK(j.contains(json::json_pointer("/c%d")));
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CHECK(j.contains(json::json_pointer("/e^f")));
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CHECK(j.contains(json::json_pointer("/g|h")));
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CHECK(j.contains(json::json_pointer("/i\\j")));
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CHECK(j.contains(json::json_pointer("/k\"l")));
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// checked access
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CHECK(j.at(json::json_pointer("/ ")) == j[" "]);
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CHECK(j.at(json::json_pointer("/c%d")) == j["c%d"]);
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CHECK(j.at(json::json_pointer("/e^f")) == j["e^f"]);
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CHECK(j.at(json::json_pointer("/g|h")) == j["g|h"]);
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CHECK(j.at(json::json_pointer("/i\\j")) == j["i\\j"]);
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CHECK(j.at(json::json_pointer("/k\"l")) == j["k\"l"]);
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// escaped access
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CHECK(j[json::json_pointer("/a~1b")] == j["a/b"]);
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CHECK(j[json::json_pointer("/m~0n")] == j["m~n"]);
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CHECK(j.contains(json::json_pointer("/a~1b")));
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CHECK(j.contains(json::json_pointer("/m~0n")));
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// unescaped access
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// access to nonexisting values yield object creation
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CHECK(!j.contains(json::json_pointer("/a/b")));
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CHECK_NOTHROW(j[json::json_pointer("/a/b")] = 42);
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CHECK(j.contains(json::json_pointer("/a/b")));
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CHECK(j["a"]["b"] == json(42));
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CHECK(!j.contains(json::json_pointer("/a/c/1")));
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CHECK_NOTHROW(j[json::json_pointer("/a/c/1")] = 42);
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CHECK(j["a"]["c"] == json({nullptr, 42}));
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CHECK(j.contains(json::json_pointer("/a/c/1")));
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CHECK(!j.contains(json::json_pointer("/a/d/-")));
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CHECK_NOTHROW(j[json::json_pointer("/a/d/-")] = 42);
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CHECK(!j.contains(json::json_pointer("/a/d/-")));
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CHECK(j["a"]["d"] == json::array({42}));
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// "/a/b" works for JSON {"a": {"b": 42}}
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CHECK(json({{"a", {{"b", 42}}}})[json::json_pointer("/a/b")] == json(42));
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// unresolved access
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json j_primitive = 1;
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CHECK_THROWS_AS(j_primitive["/foo"_json_pointer], json::out_of_range&);
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CHECK_THROWS_WITH(j_primitive["/foo"_json_pointer],
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"[json.exception.out_of_range.404] unresolved reference token 'foo'");
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CHECK_THROWS_AS(j_primitive.at("/foo"_json_pointer), json::out_of_range&);
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CHECK_THROWS_WITH(j_primitive.at("/foo"_json_pointer),
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"[json.exception.out_of_range.404] unresolved reference token 'foo'");
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CHECK(!j_primitive.contains(json::json_pointer("/foo")));
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}
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SECTION("const access")
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{
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const json j = R"(
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{
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"foo": ["bar", "baz"],
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"": 0,
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"a/b": 1,
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"c%d": 2,
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"e^f": 3,
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"g|h": 4,
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"i\\j": 5,
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"k\"l": 6,
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" ": 7,
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"m~n": 8
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}
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)"_json;
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// the whole document
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CHECK(j[json::json_pointer()] == j);
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CHECK(j[json::json_pointer("")] == j);
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// array access
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CHECK(j[json::json_pointer("/foo")] == j["foo"]);
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CHECK(j[json::json_pointer("/foo/0")] == j["foo"][0]);
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CHECK(j[json::json_pointer("/foo/1")] == j["foo"][1]);
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CHECK(j["/foo/1"_json_pointer] == j["foo"][1]);
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// checked array access
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CHECK(j.at(json::json_pointer("/foo/0")) == j["foo"][0]);
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CHECK(j.at(json::json_pointer("/foo/1")) == j["foo"][1]);
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// empty string access
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CHECK(j[json::json_pointer("/")] == j[""]);
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// other cases
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CHECK(j[json::json_pointer("/ ")] == j[" "]);
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CHECK(j[json::json_pointer("/c%d")] == j["c%d"]);
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CHECK(j[json::json_pointer("/e^f")] == j["e^f"]);
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CHECK(j[json::json_pointer("/g|h")] == j["g|h"]);
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CHECK(j[json::json_pointer("/i\\j")] == j["i\\j"]);
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CHECK(j[json::json_pointer("/k\"l")] == j["k\"l"]);
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// checked access
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CHECK(j.at(json::json_pointer("/ ")) == j[" "]);
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CHECK(j.at(json::json_pointer("/c%d")) == j["c%d"]);
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CHECK(j.at(json::json_pointer("/e^f")) == j["e^f"]);
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CHECK(j.at(json::json_pointer("/g|h")) == j["g|h"]);
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CHECK(j.at(json::json_pointer("/i\\j")) == j["i\\j"]);
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CHECK(j.at(json::json_pointer("/k\"l")) == j["k\"l"]);
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// escaped access
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CHECK(j[json::json_pointer("/a~1b")] == j["a/b"]);
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CHECK(j[json::json_pointer("/m~0n")] == j["m~n"]);
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// unescaped access
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CHECK_THROWS_AS(j.at(json::json_pointer("/a/b")), json::out_of_range&);
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CHECK_THROWS_WITH(j.at(json::json_pointer("/a/b")),
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"[json.exception.out_of_range.403] key 'a' not found");
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// unresolved access
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const json j_primitive = 1;
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CHECK_THROWS_AS(j_primitive["/foo"_json_pointer], json::out_of_range&);
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CHECK_THROWS_WITH(j_primitive["/foo"_json_pointer],
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"[json.exception.out_of_range.404] unresolved reference token 'foo'");
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CHECK_THROWS_AS(j_primitive.at("/foo"_json_pointer), json::out_of_range&);
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CHECK_THROWS_WITH(j_primitive.at("/foo"_json_pointer),
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"[json.exception.out_of_range.404] unresolved reference token 'foo'");
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}
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SECTION("user-defined string literal")
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{
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json j = R"(
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{
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"foo": ["bar", "baz"],
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"": 0,
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"a/b": 1,
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"c%d": 2,
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"e^f": 3,
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"g|h": 4,
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"i\\j": 5,
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"k\"l": 6,
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" ": 7,
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"m~n": 8
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}
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)"_json;
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// the whole document
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CHECK(j[""_json_pointer] == j);
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CHECK(j.contains(""_json_pointer));
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// array access
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CHECK(j["/foo"_json_pointer] == j["foo"]);
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CHECK(j["/foo/0"_json_pointer] == j["foo"][0]);
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CHECK(j["/foo/1"_json_pointer] == j["foo"][1]);
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CHECK(j.contains("/foo"_json_pointer));
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CHECK(j.contains("/foo/0"_json_pointer));
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CHECK(j.contains("/foo/1"_json_pointer));
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CHECK(!j.contains("/foo/-"_json_pointer));
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}
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}
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SECTION("array access")
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{
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SECTION("nonconst access")
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{
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json j = {1, 2, 3};
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const json j_const = j;
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// check reading access
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CHECK(j["/0"_json_pointer] == j[0]);
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CHECK(j["/1"_json_pointer] == j[1]);
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CHECK(j["/2"_json_pointer] == j[2]);
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// assign to existing index
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j["/1"_json_pointer] = 13;
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CHECK(j[1] == json(13));
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// assign to nonexisting index
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j["/3"_json_pointer] = 33;
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CHECK(j[3] == json(33));
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// assign to nonexisting index (with gap)
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j["/5"_json_pointer] = 55;
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CHECK(j == json({1, 13, 3, 33, nullptr, 55}));
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// error with leading 0
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CHECK_THROWS_AS(j["/01"_json_pointer], json::parse_error&);
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CHECK_THROWS_WITH(j["/01"_json_pointer],
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"[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'");
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CHECK_THROWS_AS(j_const["/01"_json_pointer], json::parse_error&);
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CHECK_THROWS_WITH(j_const["/01"_json_pointer],
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"[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'");
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CHECK_THROWS_AS(j.at("/01"_json_pointer), json::parse_error&);
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CHECK_THROWS_WITH(j.at("/01"_json_pointer),
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"[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'");
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CHECK_THROWS_AS(j_const.at("/01"_json_pointer), json::parse_error&);
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CHECK_THROWS_WITH(j_const.at("/01"_json_pointer),
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"[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'");
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CHECK(!j.contains("/01"_json_pointer));
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CHECK(!j.contains("/01"_json_pointer));
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CHECK(!j_const.contains("/01"_json_pointer));
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CHECK(!j_const.contains("/01"_json_pointer));
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// error with incorrect numbers
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CHECK_THROWS_AS(j["/one"_json_pointer] = 1, json::parse_error&);
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CHECK_THROWS_WITH(j["/one"_json_pointer] = 1,
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"[json.exception.parse_error.109] parse error: array index 'one' is not a number");
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CHECK_THROWS_AS(j_const["/one"_json_pointer] == 1, json::parse_error&);
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CHECK_THROWS_WITH(j_const["/one"_json_pointer] == 1,
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"[json.exception.parse_error.109] parse error: array index 'one' is not a number");
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CHECK_THROWS_AS(j.at("/one"_json_pointer) = 1, json::parse_error&);
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CHECK_THROWS_WITH(j.at("/one"_json_pointer) = 1,
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"[json.exception.parse_error.109] parse error: array index 'one' is not a number");
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CHECK_THROWS_AS(j_const.at("/one"_json_pointer) == 1, json::parse_error&);
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CHECK_THROWS_WITH(j_const.at("/one"_json_pointer) == 1,
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"[json.exception.parse_error.109] parse error: array index 'one' is not a number");
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CHECK_THROWS_AS(j["/+1"_json_pointer] = 1, json::parse_error&);
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CHECK_THROWS_WITH(j["/+1"_json_pointer] = 1,
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"[json.exception.parse_error.109] parse error: array index '+1' is not a number");
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CHECK_THROWS_AS(j_const["/+1"_json_pointer] == 1, json::parse_error&);
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CHECK_THROWS_WITH(j_const["/+1"_json_pointer] == 1,
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"[json.exception.parse_error.109] parse error: array index '+1' is not a number");
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CHECK_THROWS_AS(j["/1+1"_json_pointer] = 1, json::out_of_range&);
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CHECK_THROWS_WITH(j["/1+1"_json_pointer] = 1,
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"[json.exception.out_of_range.404] unresolved reference token '1+1'");
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CHECK_THROWS_AS(j_const["/1+1"_json_pointer] == 1, json::out_of_range&);
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CHECK_THROWS_WITH(j_const["/1+1"_json_pointer] == 1,
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"[json.exception.out_of_range.404] unresolved reference token '1+1'");
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{
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auto too_large_index = std::to_string((std::numeric_limits<unsigned long long>::max)()) + "1";
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json::json_pointer jp(std::string("/") + too_large_index);
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std::string throw_msg = std::string("[json.exception.out_of_range.404] unresolved reference token '") + too_large_index + "'";
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CHECK_THROWS_AS(j[jp] = 1, json::out_of_range&);
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CHECK_THROWS_WITH(j[jp] = 1, throw_msg.c_str());
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CHECK_THROWS_AS(j_const[jp] == 1, json::out_of_range&);
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CHECK_THROWS_WITH(j_const[jp] == 1, throw_msg.c_str());
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}
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if (sizeof(typename json::size_type) < sizeof(unsigned long long))
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{
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auto size_type_max_uul = static_cast<unsigned long long>((std::numeric_limits<json::size_type>::max)());
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auto too_large_index = std::to_string(size_type_max_uul);
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json::json_pointer jp(std::string("/") + too_large_index);
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std::string throw_msg = std::string("[json.exception.out_of_range.410] array index ") + too_large_index + " exceeds size_type";
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CHECK_THROWS_AS(j[jp] = 1, json::out_of_range&);
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CHECK_THROWS_WITH(j[jp] = 1, throw_msg.c_str());
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CHECK_THROWS_AS(j_const[jp] == 1, json::out_of_range&);
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CHECK_THROWS_WITH(j_const[jp] == 1, throw_msg.c_str());
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}
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CHECK_THROWS_AS(j.at("/one"_json_pointer) = 1, json::parse_error&);
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CHECK_THROWS_WITH(j.at("/one"_json_pointer) = 1,
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"[json.exception.parse_error.109] parse error: array index 'one' is not a number");
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CHECK_THROWS_AS(j_const.at("/one"_json_pointer) == 1, json::parse_error&);
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CHECK_THROWS_WITH(j_const.at("/one"_json_pointer) == 1,
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"[json.exception.parse_error.109] parse error: array index 'one' is not a number");
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CHECK(!j.contains("/one"_json_pointer));
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CHECK(!j.contains("/one"_json_pointer));
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CHECK(!j_const.contains("/one"_json_pointer));
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CHECK(!j_const.contains("/one"_json_pointer));
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CHECK_THROWS_AS(json({{"/list/0", 1}, {"/list/1", 2}, {"/list/three", 3}}).unflatten(), json::parse_error&);
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CHECK_THROWS_WITH(json({{"/list/0", 1}, {"/list/1", 2}, {"/list/three", 3}}).unflatten(),
|
|
"[json.exception.parse_error.109] parse error: array index 'three' is not a number");
|
|
|
|
// assign to "-"
|
|
j["/-"_json_pointer] = 99;
|
|
CHECK(j == json({1, 13, 3, 33, nullptr, 55, 99}));
|
|
|
|
// error when using "-" in const object
|
|
CHECK_THROWS_AS(j_const["/-"_json_pointer], json::out_of_range&);
|
|
CHECK_THROWS_WITH(j_const["/-"_json_pointer],
|
|
"[json.exception.out_of_range.402] array index '-' (3) is out of range");
|
|
CHECK(!j_const.contains("/-"_json_pointer));
|
|
|
|
// error when using "-" with at
|
|
CHECK_THROWS_AS(j.at("/-"_json_pointer), json::out_of_range&);
|
|
CHECK_THROWS_WITH(j.at("/-"_json_pointer),
|
|
"[json.exception.out_of_range.402] array index '-' (7) is out of range");
|
|
CHECK_THROWS_AS(j_const.at("/-"_json_pointer), json::out_of_range&);
|
|
CHECK_THROWS_WITH(j_const.at("/-"_json_pointer),
|
|
"[json.exception.out_of_range.402] array index '-' (3) is out of range");
|
|
CHECK(!j_const.contains("/-"_json_pointer));
|
|
}
|
|
|
|
SECTION("const access")
|
|
{
|
|
const json j = {1, 2, 3};
|
|
|
|
// check reading access
|
|
CHECK(j["/0"_json_pointer] == j[0]);
|
|
CHECK(j["/1"_json_pointer] == j[1]);
|
|
CHECK(j["/2"_json_pointer] == j[2]);
|
|
|
|
// assign to nonexisting index
|
|
CHECK_THROWS_AS(j.at("/3"_json_pointer), json::out_of_range&);
|
|
CHECK_THROWS_WITH(j.at("/3"_json_pointer),
|
|
"[json.exception.out_of_range.401] array index 3 is out of range");
|
|
CHECK(!j.contains("/3"_json_pointer));
|
|
|
|
// assign to nonexisting index (with gap)
|
|
CHECK_THROWS_AS(j.at("/5"_json_pointer), json::out_of_range&);
|
|
CHECK_THROWS_WITH(j.at("/5"_json_pointer),
|
|
"[json.exception.out_of_range.401] array index 5 is out of range");
|
|
CHECK(!j.contains("/5"_json_pointer));
|
|
|
|
// assign to "-"
|
|
CHECK_THROWS_AS(j["/-"_json_pointer], json::out_of_range&);
|
|
CHECK_THROWS_WITH(j["/-"_json_pointer],
|
|
"[json.exception.out_of_range.402] array index '-' (3) is out of range");
|
|
CHECK_THROWS_AS(j.at("/-"_json_pointer), json::out_of_range&);
|
|
CHECK_THROWS_WITH(j.at("/-"_json_pointer),
|
|
"[json.exception.out_of_range.402] array index '-' (3) is out of range");
|
|
CHECK(!j.contains("/-"_json_pointer));
|
|
}
|
|
}
|
|
|
|
SECTION("flatten")
|
|
{
|
|
json j =
|
|
{
|
|
{"pi", 3.141},
|
|
{"happy", true},
|
|
{"name", "Niels"},
|
|
{"nothing", nullptr},
|
|
{
|
|
"answer", {
|
|
{"everything", 42}
|
|
}
|
|
},
|
|
{"list", {1, 0, 2}},
|
|
{
|
|
"object", {
|
|
{"currency", "USD"},
|
|
{"value", 42.99},
|
|
{"", "empty string"},
|
|
{"/", "slash"},
|
|
{"~", "tilde"},
|
|
{"~1", "tilde1"}
|
|
}
|
|
}
|
|
};
|
|
|
|
json j_flatten =
|
|
{
|
|
{"/pi", 3.141},
|
|
{"/happy", true},
|
|
{"/name", "Niels"},
|
|
{"/nothing", nullptr},
|
|
{"/answer/everything", 42},
|
|
{"/list/0", 1},
|
|
{"/list/1", 0},
|
|
{"/list/2", 2},
|
|
{"/object/currency", "USD"},
|
|
{"/object/value", 42.99},
|
|
{"/object/", "empty string"},
|
|
{"/object/~1", "slash"},
|
|
{"/object/~0", "tilde"},
|
|
{"/object/~01", "tilde1"}
|
|
};
|
|
|
|
// check if flattened result is as expected
|
|
CHECK(j.flatten() == j_flatten);
|
|
|
|
// check if unflattened result is as expected
|
|
CHECK(j_flatten.unflatten() == j);
|
|
|
|
// error for nonobjects
|
|
CHECK_THROWS_AS(json(1).unflatten(), json::type_error&);
|
|
CHECK_THROWS_WITH(json(1).unflatten(),
|
|
"[json.exception.type_error.314] only objects can be unflattened");
|
|
|
|
// error for nonprimitve values
|
|
CHECK_THROWS_AS(json({{"/1", {1, 2, 3}}}).unflatten(), json::type_error&);
|
|
CHECK_THROWS_WITH(json({{"/1", {1, 2, 3}}}).unflatten(),
|
|
"[json.exception.type_error.315] values in object must be primitive");
|
|
|
|
// error for conflicting values
|
|
json j_error = {{"", 42}, {"/foo", 17}};
|
|
CHECK_THROWS_AS(j_error.unflatten(), json::type_error&);
|
|
CHECK_THROWS_WITH(j_error.unflatten(),
|
|
"[json.exception.type_error.313] invalid value to unflatten");
|
|
|
|
// explicit roundtrip check
|
|
CHECK(j.flatten().unflatten() == j);
|
|
|
|
// roundtrip for primitive values
|
|
json j_null;
|
|
CHECK(j_null.flatten().unflatten() == j_null);
|
|
json j_number = 42;
|
|
CHECK(j_number.flatten().unflatten() == j_number);
|
|
json j_boolean = false;
|
|
CHECK(j_boolean.flatten().unflatten() == j_boolean);
|
|
json j_string = "foo";
|
|
CHECK(j_string.flatten().unflatten() == j_string);
|
|
|
|
// roundtrip for empty structured values (will be unflattened to null)
|
|
json j_array(json::value_t::array);
|
|
CHECK(j_array.flatten().unflatten() == json());
|
|
json j_object(json::value_t::object);
|
|
CHECK(j_object.flatten().unflatten() == json());
|
|
}
|
|
|
|
SECTION("string representation")
|
|
{
|
|
for (auto ptr :
|
|
{"", "/foo", "/foo/0", "/", "/a~1b", "/c%d", "/e^f", "/g|h", "/i\\j", "/k\"l", "/ ", "/m~0n"
|
|
})
|
|
{
|
|
CHECK(json::json_pointer(ptr).to_string() == ptr);
|
|
CHECK(std::string(json::json_pointer(ptr)) == ptr);
|
|
}
|
|
}
|
|
|
|
SECTION("conversion")
|
|
{
|
|
SECTION("array")
|
|
{
|
|
json j;
|
|
// all numbers -> array
|
|
j["/12"_json_pointer] = 0;
|
|
CHECK(j.is_array());
|
|
}
|
|
|
|
SECTION("object")
|
|
{
|
|
json j;
|
|
// contains a number, but is not a number -> object
|
|
j["/a12"_json_pointer] = 0;
|
|
CHECK(j.is_object());
|
|
}
|
|
}
|
|
|
|
SECTION("empty, push, pop and parent")
|
|
{
|
|
const json j =
|
|
{
|
|
{"", "Hello"},
|
|
{"pi", 3.141},
|
|
{"happy", true},
|
|
{"name", "Niels"},
|
|
{"nothing", nullptr},
|
|
{
|
|
"answer", {
|
|
{"everything", 42}
|
|
}
|
|
},
|
|
{"list", {1, 0, 2}},
|
|
{
|
|
"object", {
|
|
{"currency", "USD"},
|
|
{"value", 42.99},
|
|
{"", "empty string"},
|
|
{"/", "slash"},
|
|
{"~", "tilde"},
|
|
{"~1", "tilde1"}
|
|
}
|
|
}
|
|
};
|
|
|
|
// empty json_pointer returns the root JSON-object
|
|
auto ptr = ""_json_pointer;
|
|
CHECK(ptr.empty());
|
|
CHECK(j[ptr] == j);
|
|
|
|
// simple field access
|
|
ptr.push_back("pi");
|
|
CHECK(!ptr.empty());
|
|
CHECK(j[ptr] == j["pi"]);
|
|
|
|
ptr.pop_back();
|
|
CHECK(ptr.empty());
|
|
CHECK(j[ptr] == j);
|
|
|
|
// object and children access
|
|
const std::string answer("answer");
|
|
ptr.push_back(answer);
|
|
ptr.push_back("everything");
|
|
CHECK(!ptr.empty());
|
|
CHECK(j[ptr] == j["answer"]["everything"]);
|
|
|
|
// check access via const pointer
|
|
const auto cptr = ptr;
|
|
CHECK(cptr.back() == "everything");
|
|
|
|
ptr.pop_back();
|
|
ptr.pop_back();
|
|
CHECK(ptr.empty());
|
|
CHECK(j[ptr] == j);
|
|
|
|
// push key which has to be encoded
|
|
ptr.push_back("object");
|
|
ptr.push_back("/");
|
|
CHECK(j[ptr] == j["object"]["/"]);
|
|
CHECK(ptr.to_string() == "/object/~1");
|
|
|
|
CHECK(j[ptr.parent_pointer()] == j["object"]);
|
|
ptr = ptr.parent_pointer().parent_pointer();
|
|
CHECK(ptr.empty());
|
|
CHECK(j[ptr] == j);
|
|
// parent-pointer of the empty json_pointer is empty
|
|
ptr = ptr.parent_pointer();
|
|
CHECK(ptr.empty());
|
|
CHECK(j[ptr] == j);
|
|
|
|
CHECK_THROWS_WITH(ptr.pop_back(),
|
|
"[json.exception.out_of_range.405] JSON pointer has no parent");
|
|
}
|
|
|
|
SECTION("operators")
|
|
{
|
|
const json j =
|
|
{
|
|
{"", "Hello"},
|
|
{"pi", 3.141},
|
|
{"happy", true},
|
|
{"name", "Niels"},
|
|
{"nothing", nullptr},
|
|
{
|
|
"answer", {
|
|
{"everything", 42}
|
|
}
|
|
},
|
|
{"list", {1, 0, 2}},
|
|
{
|
|
"object", {
|
|
{"currency", "USD"},
|
|
{"value", 42.99},
|
|
{"", "empty string"},
|
|
{"/", "slash"},
|
|
{"~", "tilde"},
|
|
{"~1", "tilde1"}
|
|
}
|
|
}
|
|
};
|
|
|
|
// empty json_pointer returns the root JSON-object
|
|
auto ptr = ""_json_pointer;
|
|
CHECK(j[ptr] == j);
|
|
|
|
// simple field access
|
|
ptr = ptr / "pi";
|
|
CHECK(j[ptr] == j["pi"]);
|
|
|
|
ptr.pop_back();
|
|
CHECK(j[ptr] == j);
|
|
|
|
// object and children access
|
|
const std::string answer("answer");
|
|
ptr /= answer;
|
|
ptr = ptr / "everything";
|
|
CHECK(j[ptr] == j["answer"]["everything"]);
|
|
|
|
ptr.pop_back();
|
|
ptr.pop_back();
|
|
CHECK(j[ptr] == j);
|
|
|
|
CHECK(ptr / ""_json_pointer == ptr);
|
|
CHECK(j["/answer"_json_pointer / "/everything"_json_pointer] == j["answer"]["everything"]);
|
|
|
|
// list children access
|
|
CHECK(j["/list"_json_pointer / 1] == j["list"][1]);
|
|
|
|
// push key which has to be encoded
|
|
ptr /= "object";
|
|
ptr = ptr / "/";
|
|
CHECK(j[ptr] == j["object"]["/"]);
|
|
CHECK(ptr.to_string() == "/object/~1");
|
|
}
|
|
}
|