| /* |
| __ _____ _____ _____ |
| __| | __| | | | JSON for Modern C++ (test suite) |
| | | |__ | | | | | | version 3.7.0 |
| |_____|_____|_____|_|___| https://github.com/nlohmann/json |
| |
| Licensed under the MIT License <http://opensource.org/licenses/MIT>. |
| SPDX-License-Identifier: MIT |
| Copyright (c) 2013-2019 Niels Lohmann <http://nlohmann.me>. |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in all |
| copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| SOFTWARE. |
| */ |
| |
| #include "doctest_compatibility.h" |
| |
| #define private public |
| #include <nlohmann/json.hpp> |
| using nlohmann::json; |
| #undef private |
| |
| TEST_CASE("JSON pointers") |
| { |
| SECTION("errors") |
| { |
| CHECK_THROWS_AS(json::json_pointer("foo"), json::parse_error&); |
| CHECK_THROWS_WITH(json::json_pointer("foo"), |
| "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'"); |
| |
| CHECK_THROWS_AS(json::json_pointer("/~~"), json::parse_error&); |
| CHECK_THROWS_WITH(json::json_pointer("/~~"), |
| "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'"); |
| |
| CHECK_THROWS_AS(json::json_pointer("/~"), json::parse_error&); |
| CHECK_THROWS_WITH(json::json_pointer("/~"), |
| "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'"); |
| |
| json::json_pointer p; |
| CHECK_THROWS_AS(p.top(), json::out_of_range&); |
| CHECK_THROWS_WITH(p.top(), |
| "[json.exception.out_of_range.405] JSON pointer has no parent"); |
| CHECK_THROWS_AS(p.pop_back(), json::out_of_range&); |
| CHECK_THROWS_WITH(p.pop_back(), |
| "[json.exception.out_of_range.405] JSON pointer has no parent"); |
| |
| SECTION("array index error") |
| { |
| json v = {1, 2, 3, 4}; |
| json::json_pointer ptr("/10e"); |
| CHECK_THROWS_AS(v[ptr], json::out_of_range&); |
| CHECK_THROWS_WITH(v[ptr], |
| "[json.exception.out_of_range.404] unresolved reference token '10e'"); |
| } |
| } |
| |
| SECTION("examples from RFC 6901") |
| { |
| SECTION("nonconst access") |
| { |
| json j = R"( |
| { |
| "foo": ["bar", "baz"], |
| "": 0, |
| "a/b": 1, |
| "c%d": 2, |
| "e^f": 3, |
| "g|h": 4, |
| "i\\j": 5, |
| "k\"l": 6, |
| " ": 7, |
| "m~n": 8 |
| } |
| )"_json; |
| |
| // the whole document |
| CHECK(j[json::json_pointer()] == j); |
| CHECK(j[json::json_pointer("")] == j); |
| CHECK(j.contains(json::json_pointer())); |
| CHECK(j.contains(json::json_pointer(""))); |
| |
| // array access |
| CHECK(j[json::json_pointer("/foo")] == j["foo"]); |
| CHECK(j.contains(json::json_pointer("/foo"))); |
| CHECK(j[json::json_pointer("/foo/0")] == j["foo"][0]); |
| CHECK(j[json::json_pointer("/foo/1")] == j["foo"][1]); |
| CHECK(j["/foo/1"_json_pointer] == j["foo"][1]); |
| CHECK(j.contains(json::json_pointer("/foo/0"))); |
| CHECK(j.contains(json::json_pointer("/foo/1"))); |
| CHECK(not j.contains(json::json_pointer("/foo/-"))); |
| |
| // checked array access |
| CHECK(j.at(json::json_pointer("/foo/0")) == j["foo"][0]); |
| CHECK(j.at(json::json_pointer("/foo/1")) == j["foo"][1]); |
| |
| // empty string access |
| CHECK(j[json::json_pointer("/")] == j[""]); |
| CHECK(j.contains(json::json_pointer(""))); |
| CHECK(j.contains(json::json_pointer("/"))); |
| |
| // other cases |
| CHECK(j[json::json_pointer("/ ")] == j[" "]); |
| CHECK(j[json::json_pointer("/c%d")] == j["c%d"]); |
| CHECK(j[json::json_pointer("/e^f")] == j["e^f"]); |
| CHECK(j[json::json_pointer("/g|h")] == j["g|h"]); |
| CHECK(j[json::json_pointer("/i\\j")] == j["i\\j"]); |
| CHECK(j[json::json_pointer("/k\"l")] == j["k\"l"]); |
| |
| // contains |
| CHECK(j.contains(json::json_pointer("/ "))); |
| CHECK(j.contains(json::json_pointer("/c%d"))); |
| CHECK(j.contains(json::json_pointer("/e^f"))); |
| CHECK(j.contains(json::json_pointer("/g|h"))); |
| CHECK(j.contains(json::json_pointer("/i\\j"))); |
| CHECK(j.contains(json::json_pointer("/k\"l"))); |
| |
| // checked access |
| CHECK(j.at(json::json_pointer("/ ")) == j[" "]); |
| CHECK(j.at(json::json_pointer("/c%d")) == j["c%d"]); |
| CHECK(j.at(json::json_pointer("/e^f")) == j["e^f"]); |
| CHECK(j.at(json::json_pointer("/g|h")) == j["g|h"]); |
| CHECK(j.at(json::json_pointer("/i\\j")) == j["i\\j"]); |
| CHECK(j.at(json::json_pointer("/k\"l")) == j["k\"l"]); |
| |
| // escaped access |
| CHECK(j[json::json_pointer("/a~1b")] == j["a/b"]); |
| CHECK(j[json::json_pointer("/m~0n")] == j["m~n"]); |
| CHECK(j.contains(json::json_pointer("/a~1b"))); |
| CHECK(j.contains(json::json_pointer("/m~0n"))); |
| |
| // unescaped access |
| // access to nonexisting values yield object creation |
| CHECK(not j.contains(json::json_pointer("/a/b"))); |
| CHECK_NOTHROW(j[json::json_pointer("/a/b")] = 42); |
| CHECK(j.contains(json::json_pointer("/a/b"))); |
| CHECK(j["a"]["b"] == json(42)); |
| |
| CHECK(not j.contains(json::json_pointer("/a/c/1"))); |
| CHECK_NOTHROW(j[json::json_pointer("/a/c/1")] = 42); |
| CHECK(j["a"]["c"] == json({nullptr, 42})); |
| CHECK(j.contains(json::json_pointer("/a/c/1"))); |
| |
| CHECK(not j.contains(json::json_pointer("/a/d/-"))); |
| CHECK_NOTHROW(j[json::json_pointer("/a/d/-")] = 42); |
| CHECK(not j.contains(json::json_pointer("/a/d/-"))); |
| CHECK(j["a"]["d"] == json::array({42})); |
| // "/a/b" works for JSON {"a": {"b": 42}} |
| CHECK(json({{"a", {{"b", 42}}}})[json::json_pointer("/a/b")] == json(42)); |
| |
| // unresolved access |
| json j_primitive = 1; |
| CHECK_THROWS_AS(j_primitive["/foo"_json_pointer], json::out_of_range&); |
| CHECK_THROWS_WITH(j_primitive["/foo"_json_pointer], |
| "[json.exception.out_of_range.404] unresolved reference token 'foo'"); |
| CHECK_THROWS_AS(j_primitive.at("/foo"_json_pointer), json::out_of_range&); |
| CHECK_THROWS_WITH(j_primitive.at("/foo"_json_pointer), |
| "[json.exception.out_of_range.404] unresolved reference token 'foo'"); |
| CHECK(not j_primitive.contains(json::json_pointer("/foo"))); |
| } |
| |
| SECTION("const access") |
| { |
| const json j = R"( |
| { |
| "foo": ["bar", "baz"], |
| "": 0, |
| "a/b": 1, |
| "c%d": 2, |
| "e^f": 3, |
| "g|h": 4, |
| "i\\j": 5, |
| "k\"l": 6, |
| " ": 7, |
| "m~n": 8 |
| } |
| )"_json; |
| |
| // the whole document |
| CHECK(j[json::json_pointer()] == j); |
| CHECK(j[json::json_pointer("")] == j); |
| |
| // array access |
| CHECK(j[json::json_pointer("/foo")] == j["foo"]); |
| CHECK(j[json::json_pointer("/foo/0")] == j["foo"][0]); |
| CHECK(j[json::json_pointer("/foo/1")] == j["foo"][1]); |
| CHECK(j["/foo/1"_json_pointer] == j["foo"][1]); |
| |
| // checked array access |
| CHECK(j.at(json::json_pointer("/foo/0")) == j["foo"][0]); |
| CHECK(j.at(json::json_pointer("/foo/1")) == j["foo"][1]); |
| |
| // empty string access |
| CHECK(j[json::json_pointer("/")] == j[""]); |
| |
| // other cases |
| CHECK(j[json::json_pointer("/ ")] == j[" "]); |
| CHECK(j[json::json_pointer("/c%d")] == j["c%d"]); |
| CHECK(j[json::json_pointer("/e^f")] == j["e^f"]); |
| CHECK(j[json::json_pointer("/g|h")] == j["g|h"]); |
| CHECK(j[json::json_pointer("/i\\j")] == j["i\\j"]); |
| CHECK(j[json::json_pointer("/k\"l")] == j["k\"l"]); |
| |
| // checked access |
| CHECK(j.at(json::json_pointer("/ ")) == j[" "]); |
| CHECK(j.at(json::json_pointer("/c%d")) == j["c%d"]); |
| CHECK(j.at(json::json_pointer("/e^f")) == j["e^f"]); |
| CHECK(j.at(json::json_pointer("/g|h")) == j["g|h"]); |
| CHECK(j.at(json::json_pointer("/i\\j")) == j["i\\j"]); |
| CHECK(j.at(json::json_pointer("/k\"l")) == j["k\"l"]); |
| |
| // escaped access |
| CHECK(j[json::json_pointer("/a~1b")] == j["a/b"]); |
| CHECK(j[json::json_pointer("/m~0n")] == j["m~n"]); |
| |
| // unescaped access |
| CHECK_THROWS_AS(j.at(json::json_pointer("/a/b")), json::out_of_range&); |
| CHECK_THROWS_WITH(j.at(json::json_pointer("/a/b")), |
| "[json.exception.out_of_range.403] key 'a' not found"); |
| |
| // unresolved access |
| const json j_primitive = 1; |
| CHECK_THROWS_AS(j_primitive["/foo"_json_pointer], json::out_of_range&); |
| CHECK_THROWS_WITH(j_primitive["/foo"_json_pointer], |
| "[json.exception.out_of_range.404] unresolved reference token 'foo'"); |
| CHECK_THROWS_AS(j_primitive.at("/foo"_json_pointer), json::out_of_range&); |
| CHECK_THROWS_WITH(j_primitive.at("/foo"_json_pointer), |
| "[json.exception.out_of_range.404] unresolved reference token 'foo'"); |
| } |
| |
| SECTION("user-defined string literal") |
| { |
| json j = R"( |
| { |
| "foo": ["bar", "baz"], |
| "": 0, |
| "a/b": 1, |
| "c%d": 2, |
| "e^f": 3, |
| "g|h": 4, |
| "i\\j": 5, |
| "k\"l": 6, |
| " ": 7, |
| "m~n": 8 |
| } |
| )"_json; |
| |
| // the whole document |
| CHECK(j[""_json_pointer] == j); |
| CHECK(j.contains(""_json_pointer)); |
| |
| // array access |
| CHECK(j["/foo"_json_pointer] == j["foo"]); |
| CHECK(j["/foo/0"_json_pointer] == j["foo"][0]); |
| CHECK(j["/foo/1"_json_pointer] == j["foo"][1]); |
| CHECK(j.contains("/foo"_json_pointer)); |
| CHECK(j.contains("/foo/0"_json_pointer)); |
| CHECK(j.contains("/foo/1"_json_pointer)); |
| CHECK(not j.contains("/foo/-"_json_pointer)); |
| } |
| } |
| |
| SECTION("array access") |
| { |
| SECTION("nonconst access") |
| { |
| json j = {1, 2, 3}; |
| const json j_const = j; |
| |
| // 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 existing index |
| j["/1"_json_pointer] = 13; |
| CHECK(j[1] == json(13)); |
| |
| // assign to nonexisting index |
| j["/3"_json_pointer] = 33; |
| CHECK(j[3] == json(33)); |
| |
| // assign to nonexisting index (with gap) |
| j["/5"_json_pointer] = 55; |
| CHECK(j == json({1, 13, 3, 33, nullptr, 55})); |
| |
| // error with leading 0 |
| CHECK_THROWS_AS(j["/01"_json_pointer], json::parse_error&); |
| CHECK_THROWS_WITH(j["/01"_json_pointer], |
| "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'"); |
| CHECK_THROWS_AS(j_const["/01"_json_pointer], json::parse_error&); |
| CHECK_THROWS_WITH(j_const["/01"_json_pointer], |
| "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'"); |
| CHECK_THROWS_AS(j.at("/01"_json_pointer), json::parse_error&); |
| CHECK_THROWS_WITH(j.at("/01"_json_pointer), |
| "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'"); |
| CHECK_THROWS_AS(j_const.at("/01"_json_pointer), json::parse_error&); |
| CHECK_THROWS_WITH(j_const.at("/01"_json_pointer), |
| "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'"); |
| CHECK_THROWS_AS(j.contains("/01"_json_pointer), json::parse_error&); |
| CHECK_THROWS_WITH(j.contains("/01"_json_pointer), |
| "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'"); |
| CHECK_THROWS_AS(j_const.contains("/01"_json_pointer), json::parse_error&); |
| CHECK_THROWS_WITH(j_const.contains("/01"_json_pointer), |
| "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'"); |
| |
| // error with incorrect numbers |
| CHECK_THROWS_AS(j["/one"_json_pointer] = 1, json::parse_error&); |
| CHECK_THROWS_WITH(j["/one"_json_pointer] = 1, |
| "[json.exception.parse_error.109] parse error: array index 'one' is not a number"); |
| CHECK_THROWS_AS(j_const["/one"_json_pointer] == 1, json::parse_error&); |
| CHECK_THROWS_WITH(j_const["/one"_json_pointer] == 1, |
| "[json.exception.parse_error.109] parse error: array index 'one' is not a number"); |
| |
| CHECK_THROWS_AS(j.at("/one"_json_pointer) = 1, json::parse_error&); |
| CHECK_THROWS_WITH(j.at("/one"_json_pointer) = 1, |
| "[json.exception.parse_error.109] parse error: array index 'one' is not a number"); |
| CHECK_THROWS_AS(j_const.at("/one"_json_pointer) == 1, json::parse_error&); |
| CHECK_THROWS_WITH(j_const.at("/one"_json_pointer) == 1, |
| "[json.exception.parse_error.109] parse error: array index 'one' is not a number"); |
| |
| CHECK_THROWS_AS(j.contains("/one"_json_pointer), json::parse_error&); |
| CHECK_THROWS_WITH(j.contains("/one"_json_pointer), |
| "[json.exception.parse_error.109] parse error: array index 'one' is not a number"); |
| CHECK_THROWS_AS(j_const.contains("/one"_json_pointer), json::parse_error&); |
| CHECK_THROWS_WITH(j_const.contains("/one"_json_pointer), |
| "[json.exception.parse_error.109] parse error: array index 'one' is not a number"); |
| |
| CHECK_THROWS_AS(json({{"/list/0", 1}, {"/list/1", 2}, {"/list/three", 3}}).unflatten(), json::parse_error&); |
| 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(not 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(not 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(not 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(not 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(not 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"); |
| } |
| } |
