/* __ _____ _____ _____ __| | __| | | | JSON for Modern C++ (test suite) | | |__ | | | | | | version 3.10.5 |_____|_____|_____|_|___| https://github.com/nlohmann/json Licensed under the MIT License . SPDX-License-Identifier: MIT Copyright (c) 2013-2022 Niels Lohmann . 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 JSON_TESTS_PRIVATE #include using nlohmann::json; TEST_CASE("JSON pointers") { SECTION("errors") { CHECK_THROWS_WITH_AS(json::json_pointer("foo"), "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'", json::parse_error&); CHECK_THROWS_WITH_AS(json::json_pointer("/~~"), "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&); CHECK_THROWS_WITH_AS(json::json_pointer("/~"), "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&); json::json_pointer p; CHECK_THROWS_WITH_AS(p.top(), "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&); CHECK_THROWS_WITH_AS(p.pop_back(), "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&); SECTION("array index error") { json v = {1, 2, 3, 4}; json::json_pointer ptr("/10e"); CHECK_THROWS_WITH_AS(v[ptr], "[json.exception.out_of_range.404] unresolved reference token '10e'", json::out_of_range&); } } 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(!j.contains(json::json_pointer("/foo/3"))); CHECK(!j.contains(json::json_pointer("/foo/+"))); CHECK(!j.contains(json::json_pointer("/foo/1+2"))); CHECK(!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(!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(!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(!j.contains(json::json_pointer("/a/d/-"))); CHECK_NOTHROW(j[json::json_pointer("/a/d/-")] = 42); CHECK(!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_WITH_AS(j_primitive["/foo"_json_pointer], "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&); CHECK_THROWS_WITH_AS(j_primitive.at("/foo"_json_pointer), "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&); CHECK(!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_WITH_AS(j.at(json::json_pointer("/a/b")), "[json.exception.out_of_range.403] key 'a' not found", json::out_of_range&); // unresolved access const json j_primitive = 1; CHECK_THROWS_WITH_AS(j_primitive["/foo"_json_pointer], "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&); CHECK_THROWS_WITH_AS(j_primitive.at("/foo"_json_pointer), "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&); } 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(!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_WITH_AS(j["/01"_json_pointer], "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&); CHECK_THROWS_WITH_AS(j_const["/01"_json_pointer], "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&); CHECK_THROWS_WITH_AS(j.at("/01"_json_pointer), "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&); CHECK_THROWS_WITH_AS(j_const.at("/01"_json_pointer), "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&); CHECK(!j.contains("/01"_json_pointer)); CHECK(!j.contains("/01"_json_pointer)); CHECK(!j_const.contains("/01"_json_pointer)); CHECK(!j_const.contains("/01"_json_pointer)); // error with incorrect numbers CHECK_THROWS_WITH_AS(j["/one"_json_pointer] = 1, "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&); CHECK_THROWS_WITH_AS(j_const["/one"_json_pointer] == 1, "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&); CHECK_THROWS_WITH_AS(j.at("/one"_json_pointer) = 1, "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&); CHECK_THROWS_WITH_AS(j_const.at("/one"_json_pointer) == 1, "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&); CHECK_THROWS_WITH_AS(j["/+1"_json_pointer] = 1, "[json.exception.parse_error.109] parse error: array index '+1' is not a number", json::parse_error&); CHECK_THROWS_WITH_AS(j_const["/+1"_json_pointer] == 1, "[json.exception.parse_error.109] parse error: array index '+1' is not a number", json::parse_error&); CHECK_THROWS_WITH_AS(j["/1+1"_json_pointer] = 1, "[json.exception.out_of_range.404] unresolved reference token '1+1'", json::out_of_range&); CHECK_THROWS_WITH_AS(j_const["/1+1"_json_pointer] == 1, "[json.exception.out_of_range.404] unresolved reference token '1+1'", json::out_of_range&); { auto too_large_index = std::to_string((std::numeric_limits::max)()) + "1"; json::json_pointer jp(std::string("/") + too_large_index); std::string throw_msg = std::string("[json.exception.out_of_range.404] unresolved reference token '") + too_large_index + "'"; CHECK_THROWS_WITH_AS(j[jp] = 1, throw_msg.c_str(), json::out_of_range&); CHECK_THROWS_WITH_AS(j_const[jp] == 1, throw_msg.c_str(), json::out_of_range&); } // on some machines, the check below is not constant DOCTEST_MSVC_SUPPRESS_WARNING_PUSH DOCTEST_MSVC_SUPPRESS_WARNING(4127) if (sizeof(typename json::size_type) < sizeof(unsigned long long)) { auto size_type_max_uul = static_cast((std::numeric_limits::max)()); auto too_large_index = std::to_string(size_type_max_uul); json::json_pointer jp(std::string("/") + too_large_index); std::string throw_msg = std::string("[json.exception.out_of_range.410] array index ") + too_large_index + " exceeds size_type"; CHECK_THROWS_WITH_AS(j[jp] = 1, throw_msg.c_str(), json::out_of_range&); CHECK_THROWS_WITH_AS(j_const[jp] == 1, throw_msg.c_str(), json::out_of_range&); } DOCTEST_MSVC_SUPPRESS_WARNING_POP CHECK_THROWS_WITH_AS(j.at("/one"_json_pointer) = 1, "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&); CHECK_THROWS_WITH_AS(j_const.at("/one"_json_pointer) == 1, "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&); CHECK(!j.contains("/one"_json_pointer)); CHECK(!j.contains("/one"_json_pointer)); CHECK(!j_const.contains("/one"_json_pointer)); CHECK(!j_const.contains("/one"_json_pointer)); CHECK_THROWS_WITH_AS(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", json::parse_error&); // assign to "-" j["/-"_json_pointer] = 99; CHECK(j == json({1, 13, 3, 33, nullptr, 55, 99})); // error when using "-" in const object CHECK_THROWS_WITH_AS(j_const["/-"_json_pointer], "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&); CHECK(!j_const.contains("/-"_json_pointer)); // error when using "-" with at CHECK_THROWS_WITH_AS(j.at("/-"_json_pointer), "[json.exception.out_of_range.402] array index '-' (7) is out of range", json::out_of_range&); CHECK_THROWS_WITH_AS(j_const.at("/-"_json_pointer), "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::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_WITH_AS(j.at("/3"_json_pointer), "[json.exception.out_of_range.401] array index 3 is out of range", json::out_of_range&); CHECK(!j.contains("/3"_json_pointer)); // assign to nonexisting index (with gap) CHECK_THROWS_WITH_AS(j.at("/5"_json_pointer), "[json.exception.out_of_range.401] array index 5 is out of range", json::out_of_range&); CHECK(!j.contains("/5"_json_pointer)); // assign to "-" CHECK_THROWS_WITH_AS(j["/-"_json_pointer], "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&); CHECK_THROWS_WITH_AS(j.at("/-"_json_pointer), "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::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_WITH_AS(json(1).unflatten(), "[json.exception.type_error.314] only objects can be unflattened", json::type_error&); // error for nonprimitve values #if JSON_DIAGNOSTICS CHECK_THROWS_WITH_AS(json({{"/1", {1, 2, 3}}}).unflatten(), "[json.exception.type_error.315] (/~11) values in object must be primitive", json::type_error&); #else CHECK_THROWS_WITH_AS(json({{"/1", {1, 2, 3}}}).unflatten(), "[json.exception.type_error.315] values in object must be primitive", json::type_error&); #endif // error for conflicting values json j_error = {{"", 42}, {"/foo", 17}}; CHECK_THROWS_WITH_AS(j_error.unflatten(), "[json.exception.type_error.313] invalid value to unflatten", json::type_error&); // 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 (const 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"); } SECTION("equality comparison") { auto ptr1 = json::json_pointer("/foo/bar"); auto ptr2 = json::json_pointer("/foo/bar"); CHECK(ptr1 == ptr2); CHECK_FALSE(ptr1 != ptr2); } SECTION("backwards compatibility and mixing") { json j = R"( { "foo": ["bar", "baz"] } )"_json; using nlohmann::ordered_json; using json_ptr_str = nlohmann::json_pointer; using json_ptr_j = nlohmann::json_pointer; using json_ptr_oj = nlohmann::json_pointer; CHECK(std::is_same::value); CHECK(std::is_same::value); CHECK(std::is_same::value); CHECK(std::is_same::value); json_ptr_str ptr{"/foo/0"}; json_ptr_j ptr_j{"/foo/0"}; json_ptr_oj ptr_oj{"/foo/0"}; CHECK(j.contains(ptr)); CHECK(j.contains(ptr_j)); CHECK(j.contains(ptr_oj)); CHECK(j.at(ptr) == j.at(ptr_j)); CHECK(j.at(ptr) == j.at(ptr_oj)); CHECK(j[ptr] == j[ptr_j]); CHECK(j[ptr] == j[ptr_oj]); CHECK(j.value(ptr, "x") == j.value(ptr_j, "x")); CHECK(j.value(ptr, "x") == j.value(ptr_oj, "x")); CHECK(ptr == ptr_j); CHECK(ptr == ptr_oj); CHECK_FALSE(ptr != ptr_j); CHECK_FALSE(ptr != ptr_oj); } }