diff options
Diffstat (limited to 'json4cpp/tests/src/unit-element_access2.cpp')
| -rw-r--r-- | json4cpp/tests/src/unit-element_access2.cpp | 1844 |
1 files changed, 1844 insertions, 0 deletions
diff --git a/json4cpp/tests/src/unit-element_access2.cpp b/json4cpp/tests/src/unit-element_access2.cpp new file mode 100644 index 0000000000..c4e25bf70f --- /dev/null +++ b/json4cpp/tests/src/unit-element_access2.cpp @@ -0,0 +1,1844 @@ +// __ _____ _____ _____ +// __| | __| | | | JSON for Modern C++ (supporting code) +// | | |__ | | | | | | version 3.12.0 +// |_____|_____|_____|_|___| https://github.com/nlohmann/json +// +// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me> +// SPDX-License-Identifier: MIT + +#include "doctest_compatibility.h" + +#include <nlohmann/json.hpp> +#ifdef JSON_TEST_NO_GLOBAL_UDLS + using namespace nlohmann::literals; // NOLINT(google-build-using-namespace) +#endif + +// build test with C++14 +// JSON_HAS_CPP_14 + +TEST_CASE_TEMPLATE("element access 2", Json, nlohmann::json, nlohmann::ordered_json) // NOLINT(readability-math-missing-parentheses, bugprone-throwing-static-initialization) +{ + SECTION("object") + { + Json j = {{"integer", 1}, {"unsigned", 1u}, {"floating", 42.23}, {"null", nullptr}, {"string", "hello world"}, {"boolean", true}, {"object", Json::object()}, {"array", {1, 2, 3}}}; + const Json j_const = j; + + SECTION("access specified element with bounds checking") + { + SECTION("access within bounds") + { + CHECK(j.at("integer") == Json(1)); + CHECK(j.at("unsigned") == Json(1u)); + CHECK(j.at("boolean") == Json(true)); + CHECK(j.at("null") == Json(nullptr)); + CHECK(j.at("string") == Json("hello world")); + CHECK(j.at("floating") == Json(42.23)); + CHECK(j.at("object") == Json::object()); + CHECK(j.at("array") == Json({1, 2, 3})); + + CHECK(j_const.at("integer") == Json(1)); + CHECK(j_const.at("unsigned") == Json(1u)); + CHECK(j_const.at("boolean") == Json(true)); + CHECK(j_const.at("null") == Json(nullptr)); + CHECK(j_const.at("string") == Json("hello world")); + CHECK(j_const.at("floating") == Json(42.23)); + CHECK(j_const.at("object") == Json::object()); + CHECK(j_const.at("array") == Json({1, 2, 3})); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.at(std::string_view("integer")) == Json(1)); + CHECK(j.at(std::string_view("unsigned")) == Json(1u)); + CHECK(j.at(std::string_view("boolean")) == Json(true)); + CHECK(j.at(std::string_view("null")) == Json(nullptr)); + CHECK(j.at(std::string_view("string")) == Json("hello world")); + CHECK(j.at(std::string_view("floating")) == Json(42.23)); + CHECK(j.at(std::string_view("object")) == Json::object()); + CHECK(j.at(std::string_view("array")) == Json({1, 2, 3})); + + CHECK(j_const.at(std::string_view("integer")) == Json(1)); + CHECK(j_const.at(std::string_view("unsigned")) == Json(1u)); + CHECK(j_const.at(std::string_view("boolean")) == Json(true)); + CHECK(j_const.at(std::string_view("null")) == Json(nullptr)); + CHECK(j_const.at(std::string_view("string")) == Json("hello world")); + CHECK(j_const.at(std::string_view("floating")) == Json(42.23)); + CHECK(j_const.at(std::string_view("object")) == Json::object()); + CHECK(j_const.at(std::string_view("array")) == Json({1, 2, 3})); +#endif + } + + SECTION("access outside bounds") + { + CHECK_THROWS_WITH_AS(j.at("foo"), "[json.exception.out_of_range.403] key 'foo' not found", typename Json::out_of_range&); + CHECK_THROWS_WITH_AS(j_const.at("foo"), "[json.exception.out_of_range.403] key 'foo' not found", typename Json::out_of_range&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j.at(std::string_view("foo")), "[json.exception.out_of_range.403] key 'foo' not found", typename Json::out_of_range&); + CHECK_THROWS_WITH_AS(j_const.at(std::string_view("foo")), "[json.exception.out_of_range.403] key 'foo' not found", typename Json::out_of_range&); +#endif + } + + SECTION("access on non-object type") + { + SECTION("null") + { + Json j_nonobject(Json::value_t::null); + const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization) + CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with null", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view(std::string_view("foo"))), "[json.exception.type_error.304] cannot use at() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view(std::string_view("foo"))), "[json.exception.type_error.304] cannot use at() with null", typename Json::type_error&); +#endif + } + + SECTION("boolean") + { + Json j_nonobject(Json::value_t::boolean); + const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization) + CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with boolean", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with boolean", typename Json::type_error&); +#endif + } + + SECTION("string") + { + Json j_nonobject(Json::value_t::string); + const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization) + CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with string", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with string", typename Json::type_error&); +#endif + } + + SECTION("array") + { + Json j_nonobject(Json::value_t::array); + const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization) + CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with array", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with array", typename Json::type_error&); +#endif + } + + SECTION("number (integer)") + { + Json j_nonobject(Json::value_t::number_integer); + const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization) + CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); +#endif + } + + SECTION("number (unsigned)") + { + Json j_nonobject(Json::value_t::number_unsigned); + const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization) + CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); +#endif + } + + SECTION("number (floating-point)") + { + Json j_nonobject(Json::value_t::number_float); + const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization) + CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&); +#endif + } + } + } + + SECTION("access specified element with default value") + { + SECTION("given a key") + { + SECTION("access existing value") + { + CHECK(j.value("integer", 2) == 1); + CHECK(j.value("integer", 1.0) == Approx(1)); + CHECK(j.value("unsigned", 2) == 1u); + CHECK(j.value("unsigned", 1.0) == Approx(1u)); + CHECK(j.value("null", Json(1)) == Json()); + CHECK(j.value("boolean", false) == true); + CHECK(j.value("string", "bar") == "hello world"); + CHECK(j.value("string", std::string("bar")) == "hello world"); + CHECK(j.value("floating", 12.34) == Approx(42.23)); + CHECK(j.value("floating", 12) == 42); + CHECK(j.value("object", Json({{"foo", "bar"}})) == Json::object()); + CHECK(j.value("array", Json({10, 100})) == Json({1, 2, 3})); + + CHECK(j_const.value("integer", 2) == 1); + CHECK(j_const.value("integer", 1.0) == Approx(1)); + CHECK(j_const.value("unsigned", 2) == 1u); + CHECK(j_const.value("unsigned", 1.0) == Approx(1u)); + CHECK(j_const.value("boolean", false) == true); + CHECK(j_const.value("string", "bar") == "hello world"); + CHECK(j_const.value("string", std::string("bar")) == "hello world"); + CHECK(j_const.value("floating", 12.34) == Approx(42.23)); + CHECK(j_const.value("floating", 12) == 42); + CHECK(j_const.value("object", Json({{"foo", "bar"}})) == Json::object()); + CHECK(j_const.value("array", Json({10, 100})) == Json({1, 2, 3})); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.value(std::string_view("integer"), 2) == 1); + CHECK(j.value(std::string_view("integer"), 1.0) == Approx(1)); + CHECK(j.value(std::string_view("unsigned"), 2) == 1u); + CHECK(j.value(std::string_view("unsigned"), 1.0) == Approx(1u)); + CHECK(j.value(std::string_view("null"), Json(1)) == Json()); + CHECK(j.value(std::string_view("boolean"), false) == true); + CHECK(j.value(std::string_view("string"), "bar") == "hello world"); + CHECK(j.value(std::string_view("string"), std::string("bar")) == "hello world"); + CHECK(j.value(std::string_view("floating"), 12.34) == Approx(42.23)); + CHECK(j.value(std::string_view("floating"), 12) == 42); + CHECK(j.value(std::string_view("object"), Json({{"foo", "bar"}})) == Json::object()); + CHECK(j.value(std::string_view("array"), Json({10, 100})) == Json({1, 2, 3})); + + CHECK(j_const.value(std::string_view("integer"), 2) == 1); + CHECK(j_const.value(std::string_view("integer"), 1.0) == Approx(1)); + CHECK(j_const.value(std::string_view("unsigned"), 2) == 1u); + CHECK(j_const.value(std::string_view("unsigned"), 1.0) == Approx(1u)); + CHECK(j_const.value(std::string_view("boolean"), false) == true); + CHECK(j_const.value(std::string_view("string"), "bar") == "hello world"); + CHECK(j_const.value(std::string_view("string"), std::string("bar")) == "hello world"); + CHECK(j_const.value(std::string_view("floating"), 12.34) == Approx(42.23)); + CHECK(j_const.value(std::string_view("floating"), 12) == 42); + CHECK(j_const.value(std::string_view("object"), Json({{"foo", "bar"}})) == Json::object()); + CHECK(j_const.value(std::string_view("array"), Json({10, 100})) == Json({1, 2, 3})); +#endif + } + + SECTION("access non-existing value") + { + CHECK(j.value("_", 2) == 2); + CHECK(j.value("_", 2u) == 2u); + CHECK(j.value("_", false) == false); + CHECK(j.value("_", "bar") == "bar"); + CHECK(j.value("_", 12.34) == Approx(12.34)); + CHECK(j.value("_", Json({{"foo", "bar"}})) == Json({{"foo", "bar"}})); + CHECK(j.value("_", Json({10, 100})) == Json({10, 100})); + + CHECK(j_const.value("_", 2) == 2); + CHECK(j_const.value("_", 2u) == 2u); + CHECK(j_const.value("_", false) == false); + CHECK(j_const.value("_", "bar") == "bar"); + CHECK(j_const.value("_", 12.34) == Approx(12.34)); + CHECK(j_const.value("_", Json({{"foo", "bar"}})) == Json({{"foo", "bar"}})); + CHECK(j_const.value("_", Json({10, 100})) == Json({10, 100})); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.value(std::string_view("_"), 2) == 2); + CHECK(j.value(std::string_view("_"), 2u) == 2u); + CHECK(j.value(std::string_view("_"), false) == false); + CHECK(j.value(std::string_view("_"), "bar") == "bar"); + CHECK(j.value(std::string_view("_"), 12.34) == Approx(12.34)); + CHECK(j.value(std::string_view("_"), Json({{"foo", "bar"}})) == Json({{"foo", "bar"}})); + CHECK(j.value(std::string_view("_"), Json({10, 100})) == Json({10, 100})); + + CHECK(j_const.value(std::string_view("_"), 2) == 2); + CHECK(j_const.value(std::string_view("_"), 2u) == 2u); + CHECK(j_const.value(std::string_view("_"), false) == false); + CHECK(j_const.value(std::string_view("_"), "bar") == "bar"); + CHECK(j_const.value(std::string_view("_"), 12.34) == Approx(12.34)); + CHECK(j_const.value(std::string_view("_"), Json({{"foo", "bar"}})) == Json({{"foo", "bar"}})); + CHECK(j_const.value(std::string_view("_"), Json({10, 100})) == Json({10, 100})); +#endif + } + + SECTION("access on non-object type") + { + SECTION("null") + { + Json j_nonobject(Json::value_t::null); + const Json j_nonobject_const(Json::value_t::null); + CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); +#endif + } + + SECTION("boolean") + { + Json j_nonobject(Json::value_t::boolean); + const Json j_nonobject_const(Json::value_t::boolean); + CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&); +#endif + } + + SECTION("string") + { + Json j_nonobject(Json::value_t::string); + const Json j_nonobject_const(Json::value_t::string); + CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&); +#endif + } + + SECTION("array") + { + Json j_nonobject(Json::value_t::array); + const Json j_nonobject_const(Json::value_t::array); + CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&); +#endif + } + + SECTION("number (integer)") + { + Json j_nonobject(Json::value_t::number_integer); + const Json j_nonobject_const(Json::value_t::number_integer); + CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); +#endif + } + + SECTION("number (unsigned)") + { + Json j_nonobject(Json::value_t::number_unsigned); + const Json j_nonobject_const(Json::value_t::number_unsigned); + CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); +#endif + } + + SECTION("number (floating-point)") + { + Json j_nonobject(Json::value_t::number_float); + const Json j_nonobject_const(Json::value_t::number_float); + CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); +#endif + } + } + } + + SECTION("given a JSON pointer") + { + SECTION("access existing value") + { + CHECK(j.value("/integer"_json_pointer, 2) == 1); + CHECK(j.value("/integer"_json_pointer, 1.0) == Approx(1)); + CHECK(j.value("/unsigned"_json_pointer, 2) == 1u); + CHECK(j.value("/unsigned"_json_pointer, 1.0) == Approx(1u)); + CHECK(j.value("/null"_json_pointer, Json(1)) == Json()); + CHECK(j.value("/boolean"_json_pointer, false) == true); + CHECK(j.value("/string"_json_pointer, "bar") == "hello world"); + CHECK(j.value("/string"_json_pointer, std::string("bar")) == "hello world"); + CHECK(j.value("/floating"_json_pointer, 12.34) == Approx(42.23)); + CHECK(j.value("/floating"_json_pointer, 12) == 42); + CHECK(j.value("/object"_json_pointer, Json({{"foo", "bar"}})) == Json::object()); + CHECK(j.value("/array"_json_pointer, Json({10, 100})) == Json({1, 2, 3})); + + CHECK(j_const.value("/integer"_json_pointer, 2) == 1); + CHECK(j_const.value("/integer"_json_pointer, 1.0) == Approx(1)); + CHECK(j_const.value("/unsigned"_json_pointer, 2) == 1u); + CHECK(j_const.value("/unsigned"_json_pointer, 1.0) == Approx(1u)); + CHECK(j_const.value("/boolean"_json_pointer, false) == true); + CHECK(j_const.value("/string"_json_pointer, "bar") == "hello world"); + CHECK(j_const.value("/string"_json_pointer, std::string("bar")) == "hello world"); + CHECK(j_const.value("/floating"_json_pointer, 12.34) == Approx(42.23)); + CHECK(j_const.value("/floating"_json_pointer, 12) == 42); + CHECK(j_const.value("/object"_json_pointer, Json({{"foo", "bar"}})) == Json::object()); + CHECK(j_const.value("/array"_json_pointer, Json({10, 100})) == Json({1, 2, 3})); + } + + SECTION("access on non-object type") + { + SECTION("null") + { + Json j_nonobject(Json::value_t::null); + const Json j_nonobject_const(Json::value_t::null); + CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + + SECTION("boolean") + { + Json j_nonobject(Json::value_t::boolean); + const Json j_nonobject_const(Json::value_t::boolean); + CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&); + } + + SECTION("string") + { + Json j_nonobject(Json::value_t::string); + const Json j_nonobject_const(Json::value_t::string); + CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&); + } + + SECTION("array") + { + Json j_nonobject(Json::value_t::array); + const Json j_nonobject_const(Json::value_t::array); + CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&); + } + + SECTION("number (integer)") + { + Json j_nonobject(Json::value_t::number_integer); + const Json j_nonobject_const(Json::value_t::number_integer); + CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + } + + SECTION("number (unsigned)") + { + Json j_nonobject(Json::value_t::number_unsigned); + const Json j_nonobject_const(Json::value_t::number_unsigned); + CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + } + + SECTION("number (floating-point)") + { + Json j_nonobject(Json::value_t::number_float); + const Json j_nonobject_const(Json::value_t::number_float); + CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&); + } + } + } + } + + SECTION("non-const operator[]") + { + { + Json j_null; + CHECK(j_null.is_null()); + j_null["key"] = 1; + CHECK(j_null.is_object()); + CHECK(j_null.size() == 1); + j_null["key"] = 2; + CHECK(j_null.size() == 1); + } +#ifdef JSON_HAS_CPP_17 + { + std::string_view const key = "key"; + Json j_null; + CHECK(j_null.is_null()); + j_null[key] = 1; + CHECK(j_null.is_object()); + CHECK(j_null.size() == 1); + j_null[key] = 2; + CHECK(j_null.size() == 1); + } +#endif + } + + SECTION("front and back") + { + if (std::is_same<Json, nlohmann::ordered_json>::value) + { + // "integer" is the first key + CHECK(j.front() == Json(1)); + CHECK(j_const.front() == Json(1)); + // "array" is last key + CHECK(j.back() == Json({1, 2, 3})); + CHECK(j_const.back() == Json({1, 2, 3})); + } + else + { + // "array" is the smallest key + CHECK(j.front() == Json({1, 2, 3})); + CHECK(j_const.front() == Json({1, 2, 3})); + // "unsigned" is the largest key + CHECK(j.back() == Json(1u)); + CHECK(j_const.back() == Json(1u)); + } + } + + SECTION("access specified element") + { + SECTION("access within bounds") + { + CHECK(j["integer"] == Json(1)); + CHECK(j[typename Json::object_t::key_type("integer")] == j["integer"]); + + CHECK(j["unsigned"] == Json(1u)); + CHECK(j[typename Json::object_t::key_type("unsigned")] == j["unsigned"]); + + CHECK(j["boolean"] == Json(true)); + CHECK(j[typename Json::object_t::key_type("boolean")] == j["boolean"]); + + CHECK(j["null"] == Json(nullptr)); + CHECK(j[typename Json::object_t::key_type("null")] == j["null"]); + + CHECK(j["string"] == Json("hello world")); + CHECK(j[typename Json::object_t::key_type("string")] == j["string"]); + + CHECK(j["floating"] == Json(42.23)); + CHECK(j[typename Json::object_t::key_type("floating")] == j["floating"]); + + CHECK(j["object"] == Json::object()); + CHECK(j[typename Json::object_t::key_type("object")] == j["object"]); + + CHECK(j["array"] == Json({1, 2, 3})); + CHECK(j[typename Json::object_t::key_type("array")] == j["array"]); + + CHECK(j_const["integer"] == Json(1)); + CHECK(j_const[typename Json::object_t::key_type("integer")] == j["integer"]); + + CHECK(j_const["boolean"] == Json(true)); + CHECK(j_const[typename Json::object_t::key_type("boolean")] == j["boolean"]); + + CHECK(j_const["null"] == Json(nullptr)); + CHECK(j_const[typename Json::object_t::key_type("null")] == j["null"]); + + CHECK(j_const["string"] == Json("hello world")); + CHECK(j_const[typename Json::object_t::key_type("string")] == j["string"]); + + CHECK(j_const["floating"] == Json(42.23)); + CHECK(j_const[typename Json::object_t::key_type("floating")] == j["floating"]); + + CHECK(j_const["object"] == Json::object()); + CHECK(j_const[typename Json::object_t::key_type("object")] == j["object"]); + + CHECK(j_const["array"] == Json({1, 2, 3})); + CHECK(j_const[typename Json::object_t::key_type("array")] == j["array"]); + } + +#ifdef JSON_HAS_CPP_17 + SECTION("access within bounds (string_view)") + { + CHECK(j["integer"] == Json(1)); + CHECK(j[std::string_view("integer")] == j["integer"]); + + CHECK(j["unsigned"] == Json(1u)); + CHECK(j[std::string_view("unsigned")] == j["unsigned"]); + + CHECK(j["boolean"] == Json(true)); + CHECK(j[std::string_view("boolean")] == j["boolean"]); + + CHECK(j["null"] == Json(nullptr)); + CHECK(j[std::string_view("null")] == j["null"]); + + CHECK(j["string"] == Json("hello world")); + CHECK(j[std::string_view("string")] == j["string"]); + + CHECK(j["floating"] == Json(42.23)); + CHECK(j[std::string_view("floating")] == j["floating"]); + + CHECK(j["object"] == Json::object()); + CHECK(j[std::string_view("object")] == j["object"]); + + CHECK(j["array"] == Json({1, 2, 3})); + CHECK(j[std::string_view("array")] == j["array"]); + + CHECK(j_const["integer"] == Json(1)); + CHECK(j_const[std::string_view("integer")] == j["integer"]); + + CHECK(j_const["boolean"] == Json(true)); + CHECK(j_const[std::string_view("boolean")] == j["boolean"]); + + CHECK(j_const["null"] == Json(nullptr)); + CHECK(j_const[std::string_view("null")] == j["null"]); + + CHECK(j_const["string"] == Json("hello world")); + CHECK(j_const[std::string_view("string")] == j["string"]); + + CHECK(j_const["floating"] == Json(42.23)); + CHECK(j_const[std::string_view("floating")] == j["floating"]); + + CHECK(j_const["object"] == Json::object()); + CHECK(j_const[std::string_view("object")] == j["object"]); + + CHECK(j_const["array"] == Json({1, 2, 3})); + CHECK(j_const[std::string_view("array")] == j["array"]); + } +#endif + + SECTION("access on non-object type") + { + SECTION("null") + { + Json j_nonobject(Json::value_t::null); + Json j_nonobject2(Json::value_t::null); + const Json j_const_nonobject(j_nonobject); + + CHECK_NOTHROW(j_nonobject["foo"]); + CHECK_NOTHROW(j_nonobject2[typename Json::object_t::key_type("foo")]); + CHECK_THROWS_WITH_AS(j_const_nonobject["foo"], "[json.exception.type_error.305] cannot use operator[] with a string argument with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with null", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_NOTHROW(j_nonobject2[std::string_view("foo")]); + CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with null", typename Json::type_error&); +#endif + } + + SECTION("boolean") + { + Json j_nonobject(Json::value_t::boolean); + const Json j_const_nonobject(j_nonobject); + CHECK_THROWS_WITH_AS(j_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&); +#endif + } + + SECTION("string") + { + Json j_nonobject(Json::value_t::string); + const Json j_const_nonobject(j_nonobject); + CHECK_THROWS_WITH_AS(j_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&); +#endif + } + + SECTION("array") + { + Json j_nonobject(Json::value_t::array); + const Json j_const_nonobject(j_nonobject); + CHECK_THROWS_WITH_AS(j_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&); +#endif + } + + SECTION("number (integer)") + { + Json j_nonobject(Json::value_t::number_integer); + const Json j_const_nonobject(j_nonobject); + CHECK_THROWS_WITH_AS(j_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); +#endif + } + + SECTION("number (unsigned)") + { + Json j_nonobject(Json::value_t::number_unsigned); + const Json j_const_nonobject(j_nonobject); + CHECK_THROWS_WITH_AS(j_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); +#endif + } + + SECTION("number (floating-point)") + { + Json j_nonobject(Json::value_t::number_float); + const Json j_const_nonobject(j_nonobject); + CHECK_THROWS_WITH_AS(j_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject["foo"], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")], + "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); + CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&); +#endif + } + } + } + + SECTION("remove specified element") + { + SECTION("remove element by key") + { + CHECK(j.find("integer") != j.end()); + CHECK(j.erase("integer") == 1); + CHECK(j.find("integer") == j.end()); + CHECK(j.erase("integer") == 0); + + CHECK(j.find("unsigned") != j.end()); + CHECK(j.erase("unsigned") == 1); + CHECK(j.find("unsigned") == j.end()); + CHECK(j.erase("unsigned") == 0); + + CHECK(j.find("boolean") != j.end()); + CHECK(j.erase("boolean") == 1); + CHECK(j.find("boolean") == j.end()); + CHECK(j.erase("boolean") == 0); + + CHECK(j.find("null") != j.end()); + CHECK(j.erase("null") == 1); + CHECK(j.find("null") == j.end()); + CHECK(j.erase("null") == 0); + + CHECK(j.find("string") != j.end()); + CHECK(j.erase("string") == 1); + CHECK(j.find("string") == j.end()); + CHECK(j.erase("string") == 0); + + CHECK(j.find("floating") != j.end()); + CHECK(j.erase("floating") == 1); + CHECK(j.find("floating") == j.end()); + CHECK(j.erase("floating") == 0); + + CHECK(j.find("object") != j.end()); + CHECK(j.erase("object") == 1); + CHECK(j.find("object") == j.end()); + CHECK(j.erase("object") == 0); + + CHECK(j.find("array") != j.end()); + CHECK(j.erase("array") == 1); + CHECK(j.find("array") == j.end()); + CHECK(j.erase("array") == 0); + } + +#ifdef JSON_HAS_CPP_17 + SECTION("remove element by key (string_view)") + { + CHECK(j.find(std::string_view("integer")) != j.end()); + CHECK(j.erase(std::string_view("integer")) == 1); + CHECK(j.find(std::string_view("integer")) == j.end()); + CHECK(j.erase(std::string_view("integer")) == 0); + + CHECK(j.find(std::string_view("unsigned")) != j.end()); + CHECK(j.erase(std::string_view("unsigned")) == 1); + CHECK(j.find(std::string_view("unsigned")) == j.end()); + CHECK(j.erase(std::string_view("unsigned")) == 0); + + CHECK(j.find(std::string_view("boolean")) != j.end()); + CHECK(j.erase(std::string_view("boolean")) == 1); + CHECK(j.find(std::string_view("boolean")) == j.end()); + CHECK(j.erase(std::string_view("boolean")) == 0); + + CHECK(j.find(std::string_view("null")) != j.end()); + CHECK(j.erase(std::string_view("null")) == 1); + CHECK(j.find(std::string_view("null")) == j.end()); + CHECK(j.erase(std::string_view("null")) == 0); + + CHECK(j.find(std::string_view("string")) != j.end()); + CHECK(j.erase(std::string_view("string")) == 1); + CHECK(j.find(std::string_view("string")) == j.end()); + CHECK(j.erase(std::string_view("string")) == 0); + + CHECK(j.find(std::string_view("floating")) != j.end()); + CHECK(j.erase(std::string_view("floating")) == 1); + CHECK(j.find(std::string_view("floating")) == j.end()); + CHECK(j.erase(std::string_view("floating")) == 0); + + CHECK(j.find(std::string_view("object")) != j.end()); + CHECK(j.erase(std::string_view("object")) == 1); + CHECK(j.find(std::string_view("object")) == j.end()); + CHECK(j.erase(std::string_view("object")) == 0); + + CHECK(j.find(std::string_view("array")) != j.end()); + CHECK(j.erase(std::string_view("array")) == 1); + CHECK(j.find(std::string_view("array")) == j.end()); + CHECK(j.erase(std::string_view("array")) == 0); + } +#endif + + SECTION("remove element by iterator") + { + SECTION("erase(begin())") + { + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + typename Json::iterator const it2 = jobject.erase(jobject.begin()); + CHECK(jobject == Json({{"b", 1}, {"c", 17u}})); + CHECK(*it2 == Json(1)); + } + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + typename Json::const_iterator const it2 = jobject.erase(jobject.cbegin()); + CHECK(jobject == Json({{"b", 1}, {"c", 17u}})); + CHECK(*it2 == Json(1)); + } + } + + SECTION("erase(begin(), end())") + { + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + const typename Json::iterator it2 = jobject.erase(jobject.begin(), jobject.end()); + CHECK(jobject == Json::object()); + CHECK(it2 == jobject.end()); + } + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + const typename Json::const_iterator it2 = jobject.erase(jobject.cbegin(), jobject.cend()); + CHECK(jobject == Json::object()); + CHECK(it2 == jobject.cend()); + } + } + + SECTION("erase(begin(), begin())") + { + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + typename Json::iterator const it2 = jobject.erase(jobject.begin(), jobject.begin()); + CHECK(jobject == Json({{"a", "a"}, {"b", 1}, {"c", 17u}})); + CHECK(*it2 == Json("a")); + } + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + typename Json::const_iterator const it2 = jobject.erase(jobject.cbegin(), jobject.cbegin()); + CHECK(jobject == Json({{"a", "a"}, {"b", 1}, {"c", 17u}})); + CHECK(*it2 == Json("a")); + } + } + + SECTION("erase at offset") + { + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + typename Json::iterator const it = jobject.find("b"); + typename Json::iterator const it2 = jobject.erase(it); + CHECK(jobject == Json({{"a", "a"}, {"c", 17u}})); + CHECK(*it2 == Json(17)); + } + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + typename Json::const_iterator const it = jobject.find("b"); + typename Json::const_iterator const it2 = jobject.erase(it); + CHECK(jobject == Json({{"a", "a"}, {"c", 17u}})); + CHECK(*it2 == Json(17)); + } + } + + SECTION("erase subrange") + { + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}}; + typename Json::iterator const it2 = jobject.erase(jobject.find("b"), jobject.find("e")); + CHECK(jobject == Json({{"a", "a"}, {"e", true}})); + CHECK(*it2 == Json(true)); + } + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}}; + typename Json::const_iterator const it2 = jobject.erase(jobject.find("b"), jobject.find("e")); + CHECK(jobject == Json({{"a", "a"}, {"e", true}})); + CHECK(*it2 == Json(true)); + } + } + + SECTION("different objects") + { + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}}; + Json jobject2 = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + CHECK_THROWS_WITH_AS(jobject.erase(jobject2.begin()), + "[json.exception.invalid_iterator.202] iterator does not fit current value", typename Json::invalid_iterator&); + CHECK_THROWS_WITH_AS(jobject.erase(jobject.begin(), jobject2.end()), + "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&); + CHECK_THROWS_WITH_AS(jobject.erase(jobject2.begin(), jobject.end()), + "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&); + CHECK_THROWS_WITH_AS(jobject.erase(jobject2.begin(), jobject2.end()), + "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&); + } + { + Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}}; + Json jobject2 = {{"a", "a"}, {"b", 1}, {"c", 17u}}; + CHECK_THROWS_WITH_AS(jobject.erase(jobject2.cbegin()), + "[json.exception.invalid_iterator.202] iterator does not fit current value", typename Json::invalid_iterator&); + CHECK_THROWS_WITH_AS(jobject.erase(jobject.cbegin(), jobject2.cend()), + "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&); + CHECK_THROWS_WITH_AS(jobject.erase(jobject2.cbegin(), jobject.cend()), + "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&); + CHECK_THROWS_WITH_AS(jobject.erase(jobject2.cbegin(), jobject2.cend()), + "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&); + } + } + } + + SECTION("remove element by key in non-object type") + { + SECTION("null") + { + Json j_nonobject(Json::value_t::null); + CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with null", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with null", typename Json::type_error&); +#endif + } + + SECTION("boolean") + { + Json j_nonobject(Json::value_t::boolean); + CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with boolean", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with boolean", typename Json::type_error&); +#endif + } + + SECTION("string") + { + Json j_nonobject(Json::value_t::string); + CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with string", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with string", typename Json::type_error&); +#endif + } + + SECTION("array") + { + Json j_nonobject(Json::value_t::array); + CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with array", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with array", typename Json::type_error&); +#endif + } + + SECTION("number (integer)") + { + Json j_nonobject(Json::value_t::number_integer); + CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with number", typename Json::type_error&); +#endif + } + + SECTION("number (floating-point)") + { + Json j_nonobject(Json::value_t::number_float); + CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with number", typename Json::type_error&); + +#ifdef JSON_HAS_CPP_17 + CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with number", typename Json::type_error&); +#endif + } + } + } + + SECTION("find an element in an object") + { + SECTION("existing element") + { + for (const auto* key : + {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array" + }) + { + CHECK(j.find(key) != j.end()); + CHECK(*j.find(key) == j.at(key)); + CHECK(j_const.find(key) != j_const.end()); + CHECK(*j_const.find(key) == j_const.at(key)); + } +#ifdef JSON_HAS_CPP_17 + for (const std::string_view key : + {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array" + }) + { + CHECK(j.find(key) != j.end()); + CHECK(*j.find(key) == j.at(key)); + CHECK(j_const.find(key) != j_const.end()); + CHECK(*j_const.find(key) == j_const.at(key)); + } +#endif + } + + SECTION("nonexisting element") + { + CHECK(j.find("foo") == j.end()); + CHECK(j_const.find("foo") == j_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.find(std::string_view("foo")) == j.end()); + CHECK(j_const.find(std::string_view("foo")) == j_const.end()); +#endif + } + + SECTION("all types") + { + SECTION("null") + { + Json j_nonarray(Json::value_t::null); + const Json j_nonarray_const(j_nonarray); + + CHECK(j_nonarray.find("foo") == j_nonarray.end()); + CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end()); + CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end()); +#endif + } + + SECTION("string") + { + Json j_nonarray(Json::value_t::string); + const Json j_nonarray_const(j_nonarray); + + CHECK(j_nonarray.find("foo") == j_nonarray.end()); + CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end()); + CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end()); +#endif + } + + SECTION("object") + { + Json j_nonarray(Json::value_t::object); + const Json j_nonarray_const(j_nonarray); + + CHECK(j_nonarray.find("foo") == j_nonarray.end()); + CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end()); + CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end()); +#endif + } + + SECTION("array") + { + Json j_nonarray(Json::value_t::array); + const Json j_nonarray_const(j_nonarray); + + CHECK(j_nonarray.find("foo") == j_nonarray.end()); + CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end()); + CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end()); +#endif + } + + SECTION("boolean") + { + Json j_nonarray(Json::value_t::boolean); + const Json j_nonarray_const(j_nonarray); + + CHECK(j_nonarray.find("foo") == j_nonarray.end()); + CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end()); + CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end()); +#endif + } + + SECTION("number (integer)") + { + Json j_nonarray(Json::value_t::number_integer); + const Json j_nonarray_const(j_nonarray); + + CHECK(j_nonarray.find("foo") == j_nonarray.end()); + CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end()); + CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end()); +#endif + } + + SECTION("number (unsigned)") + { + Json j_nonarray(Json::value_t::number_unsigned); + const Json j_nonarray_const(j_nonarray); + + CHECK(j_nonarray.find("foo") == j_nonarray.end()); + CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end()); + CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end()); +#endif + } + + SECTION("number (floating-point)") + { + Json j_nonarray(Json::value_t::number_float); + const Json j_nonarray_const(j_nonarray); + + CHECK(j_nonarray.find("foo") == j_nonarray.end()); + CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end()); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end()); + CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end()); +#endif + } + } + } + + SECTION("count keys in an object") + { + SECTION("existing element") + { + for (const auto* key : + {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array" + }) + { + CHECK(j.count(key) == 1); + CHECK(j_const.count(key) == 1); + } +#ifdef JSON_HAS_CPP_17 + for (const std::string_view key : + {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array" + }) + { + CHECK(j.count(key) == 1); + CHECK(j_const.count(key) == 1); + } +#endif + } + + SECTION("nonexisting element") + { + CHECK(j.count("foo") == 0); + CHECK(j_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + + SECTION("all types") + { + SECTION("null") + { + Json j_nonobject(Json::value_t::null); + const Json j_nonobject_const(Json::value_t::null); + + CHECK(j_nonobject.count("foo") == 0); + CHECK(j_nonobject_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + + SECTION("string") + { + Json j_nonobject(Json::value_t::string); + const Json j_nonobject_const(Json::value_t::string); + + CHECK(j_nonobject.count("foo") == 0); + CHECK(j_nonobject_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + + SECTION("object") + { + Json j_nonobject(Json::value_t::object); + const Json j_nonobject_const(Json::value_t::object); + + CHECK(j_nonobject.count("foo") == 0); + CHECK(j_nonobject_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + + SECTION("array") + { + Json j_nonobject(Json::value_t::array); + const Json j_nonobject_const(Json::value_t::array); + + CHECK(j_nonobject.count("foo") == 0); + CHECK(j_nonobject_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + + SECTION("boolean") + { + Json j_nonobject(Json::value_t::boolean); + const Json j_nonobject_const(Json::value_t::boolean); + + CHECK(j_nonobject.count("foo") == 0); + CHECK(j_nonobject_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + + SECTION("number (integer)") + { + Json j_nonobject(Json::value_t::number_integer); + const Json j_nonobject_const(Json::value_t::number_integer); + + CHECK(j_nonobject.count("foo") == 0); + CHECK(j_nonobject_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + + SECTION("number (unsigned)") + { + Json j_nonobject(Json::value_t::number_unsigned); + const Json j_nonobject_const(Json::value_t::number_unsigned); + + CHECK(j_nonobject.count("foo") == 0); + CHECK(j_nonobject_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + + SECTION("number (floating-point)") + { + Json j_nonobject(Json::value_t::number_float); + const Json j_nonobject_const(Json::value_t::number_float); + + CHECK(j_nonobject.count("foo") == 0); + CHECK(j_nonobject_const.count("foo") == 0); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.count(std::string_view("foo")) == 0); + CHECK(j_const.count(std::string_view("foo")) == 0); +#endif + } + } + } + + SECTION("check existence of key in an object") + { + SECTION("existing element") + { + for (const auto* key : + {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array" + }) + { + CHECK(j.contains(key) == true); + CHECK(j_const.contains(key) == true); + } + +#ifdef JSON_HAS_CPP_17 + for (const std::string_view key : + {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array" + }) + { + CHECK(j.contains(key) == true); + CHECK(j_const.contains(key) == true); + } +#endif + } + + SECTION("nonexisting element") + { + CHECK(j.contains("foo") == false); + CHECK(j_const.contains("foo") == false); + +#ifdef JSON_HAS_CPP_17 + CHECK(j.contains(std::string_view("foo")) == false); + CHECK(j_const.contains(std::string_view("foo")) == false); +#endif + } + + SECTION("all types") + { + SECTION("null") + { + Json j_nonobject(Json::value_t::null); + const Json j_nonobject_const(Json::value_t::null); + + CHECK(j_nonobject.contains("foo") == false); + CHECK(j_nonobject_const.contains("foo") == false); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonobject.contains(std::string_view("foo")) == false); + CHECK(j_nonobject_const.contains(std::string_view("foo")) == false); +#endif + } + + SECTION("string") + { + Json j_nonobject(Json::value_t::string); + const Json j_nonobject_const(Json::value_t::string); + + CHECK(j_nonobject.contains("foo") == false); + CHECK(j_nonobject_const.contains("foo") == false); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonobject.contains(std::string_view("foo")) == false); + CHECK(j_nonobject_const.contains(std::string_view("foo")) == false); +#endif + } + + SECTION("object") + { + Json j_nonobject(Json::value_t::object); + const Json j_nonobject_const(Json::value_t::object); + + CHECK(j_nonobject.contains("foo") == false); + CHECK(j_nonobject_const.contains("foo") == false); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonobject.contains(std::string_view("foo")) == false); + CHECK(j_nonobject_const.contains(std::string_view("foo")) == false); +#endif + } + + SECTION("array") + { + Json j_nonobject(Json::value_t::array); + const Json j_nonobject_const(Json::value_t::array); + + CHECK(j_nonobject.contains("foo") == false); + CHECK(j_nonobject_const.contains("foo") == false); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonobject.contains(std::string_view("foo")) == false); + CHECK(j_nonobject_const.contains(std::string_view("foo")) == false); +#endif + } + + SECTION("boolean") + { + Json j_nonobject(Json::value_t::boolean); + const Json j_nonobject_const(Json::value_t::boolean); + + CHECK(j_nonobject.contains("foo") == false); + CHECK(j_nonobject_const.contains("foo") == false); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonobject.contains(std::string_view("foo")) == false); + CHECK(j_nonobject_const.contains(std::string_view("foo")) == false); +#endif + } + + SECTION("number (integer)") + { + Json j_nonobject(Json::value_t::number_integer); + const Json j_nonobject_const(Json::value_t::number_integer); + + CHECK(j_nonobject.contains("foo") == false); + CHECK(j_nonobject_const.contains("foo") == false); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonobject.contains(std::string_view("foo")) == false); + CHECK(j_nonobject_const.contains(std::string_view("foo")) == false); +#endif + } + + SECTION("number (unsigned)") + { + Json j_nonobject(Json::value_t::number_unsigned); + const Json j_nonobject_const(Json::value_t::number_unsigned); + + CHECK(j_nonobject.contains("foo") == false); + CHECK(j_nonobject_const.contains("foo") == false); + +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonobject.contains(std::string_view("foo")) == false); + CHECK(j_nonobject_const.contains(std::string_view("foo")) == false); +#endif + } + + SECTION("number (floating-point)") + { + Json j_nonobject(Json::value_t::number_float); + const Json j_nonobject_const(Json::value_t::number_float); + CHECK(j_nonobject.contains("foo") == false); + CHECK(j_nonobject_const.contains("foo") == false); +#ifdef JSON_HAS_CPP_17 + CHECK(j_nonobject.contains(std::string_view("foo")) == false); + CHECK(j_nonobject_const.contains(std::string_view("foo")) == false); +#endif + } + } + } + } +} + +#if !defined(JSON_NOEXCEPTION) +TEST_CASE_TEMPLATE("element access 2 (throwing tests)", Json, nlohmann::json, nlohmann::ordered_json) // NOLINT(readability-math-missing-parentheses, bugprone-throwing-static-initialization) +{ + SECTION("object") + { + Json j = {{"integer", 1}, {"unsigned", 1u}, {"floating", 42.23}, {"null", nullptr}, {"string", "hello world"}, {"boolean", true}, {"object", Json::object()}, {"array", {1, 2, 3}}}; + const Json j_const = {{"integer", 1}, {"unsigned", 1u}, {"floating", 42.23}, {"null", nullptr}, {"string", "hello world"}, {"boolean", true}, {"object", Json::object()}, {"array", {1, 2, 3}}}; + + SECTION("access specified element with default value") + { + SECTION("given a JSON pointer") + { + SECTION("access non-existing value") + { + CHECK(j.value("/not/existing"_json_pointer, 2) == 2); + CHECK(j.value("/not/existing"_json_pointer, 2u) == 2u); + CHECK(j.value("/not/existing"_json_pointer, false) == false); + CHECK(j.value("/not/existing"_json_pointer, "bar") == "bar"); + CHECK(j.value("/not/existing"_json_pointer, 12.34) == Approx(12.34)); + CHECK(j.value("/not/existing"_json_pointer, Json({{"foo", "bar"}})) == Json({{"foo", "bar"}})); + CHECK(j.value("/not/existing"_json_pointer, Json({10, 100})) == Json({10, 100})); + + CHECK(j_const.value("/not/existing"_json_pointer, 2) == 2); + CHECK(j_const.value("/not/existing"_json_pointer, 2u) == 2u); + CHECK(j_const.value("/not/existing"_json_pointer, false) == false); + CHECK(j_const.value("/not/existing"_json_pointer, "bar") == "bar"); + CHECK(j_const.value("/not/existing"_json_pointer, 12.34) == Approx(12.34)); + CHECK(j_const.value("/not/existing"_json_pointer, Json({{"foo", "bar"}})) == Json({{"foo", "bar"}})); + CHECK(j_const.value("/not/existing"_json_pointer, Json({10, 100})) == Json({10, 100})); + } + } + } + } +} +#endif + +// TODO(falbrechtskirchinger) merge with the other test case; clean up +TEST_CASE_TEMPLATE("element access 2 (additional value() tests)", Json, nlohmann::json, nlohmann::ordered_json) // NOLINT(readability-math-missing-parentheses, bugprone-throwing-static-initialization) +{ + using string_t = typename Json::string_t; + using number_integer_t = typename Json::number_integer_t; + + // test assumes string_t and object_t::key_type are the same + REQUIRE(std::is_same<string_t, typename Json::object_t::key_type>::value); + + Json j + { + {"foo", "bar"}, + {"baz", 42} + }; + + const char* cpstr = "default"; + const char castr[] = "default"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays) + string_t const str = "default"; + + number_integer_t integer = 69; + std::size_t size = 69; + + SECTION("deduced ValueType") + { + SECTION("literal key") + { + CHECK(j.value("foo", "default") == "bar"); + CHECK(j.value("foo", cpstr) == "bar"); + CHECK(j.value("foo", castr) == "bar"); + CHECK(j.value("foo", str) == "bar"); + // this test is in fact different from the one below, + // because of 0 considering const char * overloads + // whereas any other number does not + CHECK(j.value("baz", 0) == 42); + CHECK(j.value("baz", 47) == 42); + CHECK(j.value("baz", integer) == 42); + CHECK(j.value("baz", size) == 42); + + CHECK(j.value("bar", "default") == "default"); + CHECK(j.value("bar", 0) == 0); + CHECK(j.value("bar", 47) == 47); + CHECK(j.value("bar", integer) == integer); + CHECK(j.value("bar", size) == size); + + CHECK_THROWS_WITH_AS(Json().value("foo", "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().value("foo", str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + + SECTION("const char * key") + { + const char* key = "foo"; + const char* key2 = "baz"; + const char* key_notfound = "bar"; + + CHECK(j.value(key, "default") == "bar"); + CHECK(j.value(key, cpstr) == "bar"); + CHECK(j.value(key, castr) == "bar"); + CHECK(j.value(key, str) == "bar"); + CHECK(j.value(key2, 0) == 42); + CHECK(j.value(key2, 47) == 42); + CHECK(j.value(key2, integer) == 42); + CHECK(j.value(key2, size) == 42); + + CHECK(j.value(key_notfound, "default") == "default"); + CHECK(j.value(key_notfound, 0) == 0); + CHECK(j.value(key_notfound, 47) == 47); + CHECK(j.value(key_notfound, integer) == integer); + CHECK(j.value(key_notfound, size) == size); + + CHECK_THROWS_WITH_AS(Json().value(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().value(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + + SECTION("const char(&)[] key") + { + const char key[] = "foo"; // NOLINT(misc-const-correctness,hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays) + const char key2[] = "baz"; // NOLINT(misc-const-correctness,hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays) + const char key_notfound[] = "bar"; // NOLINT(misc-const-correctness,hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays) + + CHECK(j.value(key, "default") == "bar"); + CHECK(j.value(key, cpstr) == "bar"); + CHECK(j.value(key, castr) == "bar"); + CHECK(j.value(key, str) == "bar"); + CHECK(j.value(key2, 0) == 42); + CHECK(j.value(key2, 47) == 42); + CHECK(j.value(key2, integer) == 42); + CHECK(j.value(key2, size) == 42); + + CHECK(j.value(key_notfound, "default") == "default"); + CHECK(j.value(key_notfound, 0) == 0); + CHECK(j.value(key_notfound, 47) == 47); + CHECK(j.value(key_notfound, integer) == integer); + CHECK(j.value(key_notfound, size) == size); + + CHECK_THROWS_WITH_AS(Json().value(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().value(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + + SECTION("string_t/object_t::key_type key") + { + string_t const key = "foo"; + string_t const key2 = "baz"; + string_t const key_notfound = "bar"; + + CHECK(j.value(key, "default") == "bar"); + CHECK(j.value(key, cpstr) == "bar"); + CHECK(j.value(key, castr) == "bar"); + CHECK(j.value(key, str) == "bar"); + CHECK(j.value(key2, 0) == 42); + CHECK(j.value(key2, 47) == 42); + CHECK(j.value(key2, integer) == 42); + CHECK(j.value(key2, size) == 42); + + CHECK(j.value(key_notfound, "default") == "default"); + CHECK(j.value(key_notfound, 0) == 0); + CHECK(j.value(key_notfound, 47) == 47); + CHECK(j.value(key_notfound, integer) == integer); + CHECK(j.value(key_notfound, size) == size); + + CHECK_THROWS_WITH_AS(Json().value(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().value(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + +#ifdef JSON_HAS_CPP_17 + SECTION("std::string_view key") + { + std::string_view const key = "foo"; + std::string_view const key2 = "baz"; + std::string_view const key_notfound = "bar"; + + CHECK(j.value(key, "default") == "bar"); + CHECK(j.value(key, cpstr) == "bar"); + CHECK(j.value(key, castr) == "bar"); + CHECK(j.value(key, str) == "bar"); + CHECK(j.value(key2, 0) == 42); + CHECK(j.value(key2, 47) == 42); + CHECK(j.value(key2, integer) == 42); + CHECK(j.value(key2, size) == 42); + + CHECK(j.value(key_notfound, "default") == "default"); + CHECK(j.value(key_notfound, 0) == 0); + CHECK(j.value(key_notfound, 47) == 47); + CHECK(j.value(key_notfound, integer) == integer); + CHECK(j.value(key_notfound, size) == size); + + CHECK_THROWS_WITH_AS(Json().value(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().value(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } +#endif + } + + SECTION("explicit ValueType") + { + SECTION("literal key") + { + CHECK(j.template value<string_t>("foo", "default") == "bar"); + CHECK(j.template value<string_t>("foo", cpstr) == "bar"); + CHECK(j.template value<string_t>("foo", castr) == "bar"); + CHECK(j.template value<string_t>("foo", str) == "bar"); + CHECK(j.template value<number_integer_t>("baz", 0) == 42); + CHECK(j.template value<number_integer_t>("baz", 47) == 42); + CHECK(j.template value<number_integer_t>("baz", integer) == 42); + CHECK(j.template value<std::size_t>("baz", 0) == 42); + CHECK(j.template value<std::size_t>("baz", 47) == 42); + CHECK(j.template value<std::size_t>("baz", size) == 42); + + CHECK(j.template value<string_t>("bar", "default") == "default"); + CHECK(j.template value<number_integer_t>("bar", 0) == 0); + CHECK(j.template value<number_integer_t>("bar", 47) == 47); + CHECK(j.template value<number_integer_t>("bar", integer) == integer); + CHECK(j.template value<std::size_t>("bar", 0) == 0); + CHECK(j.template value<std::size_t>("bar", 47) == 47); + CHECK(j.template value<std::size_t>("bar", size) == size); + + CHECK_THROWS_WITH_AS(Json().template value<string_t>("foo", "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().template value<string_t>("foo", str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + + SECTION("const char * key") + { + const char* key = "foo"; + const char* key2 = "baz"; + const char* key_notfound = "bar"; + + CHECK(j.template value<string_t>(key, "default") == "bar"); + CHECK(j.template value<string_t>(key, cpstr) == "bar"); + CHECK(j.template value<string_t>(key, castr) == "bar"); + CHECK(j.template value<string_t>(key, str) == "bar"); + CHECK(j.template value<number_integer_t>(key2, 0) == 42); + CHECK(j.template value<number_integer_t>(key2, 47) == 42); + CHECK(j.template value<number_integer_t>(key2, integer) == 42); + CHECK(j.template value<std::size_t>(key2, 0) == 42); + CHECK(j.template value<std::size_t>(key2, 47) == 42); + CHECK(j.template value<std::size_t>(key2, size) == 42); + + CHECK(j.template value<string_t>(key_notfound, "default") == "default"); + CHECK(j.template value<number_integer_t>(key_notfound, 0) == 0); + CHECK(j.template value<number_integer_t>(key_notfound, 47) == 47); + CHECK(j.template value<number_integer_t>(key_notfound, integer) == integer); + CHECK(j.template value<std::size_t>(key_notfound, 0) == 0); + CHECK(j.template value<std::size_t>(key_notfound, 47) == 47); + CHECK(j.template value<std::size_t>(key_notfound, size) == size); + + CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + + SECTION("const char(&)[] key") + { + const char key[] = "foo"; // NOLINT(misc-const-correctness,hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays) + const char key2[] = "baz"; // NOLINT(misc-const-correctness,hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays) + const char key_notfound[] = "bar"; // NOLINT(misc-const-correctness,hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays) + + CHECK(j.template value<string_t>(key, "default") == "bar"); + CHECK(j.template value<string_t>(key, cpstr) == "bar"); + CHECK(j.template value<string_t>(key, castr) == "bar"); + CHECK(j.template value<string_t>(key, str) == "bar"); + CHECK(j.template value<number_integer_t>(key2, 0) == 42); + CHECK(j.template value<number_integer_t>(key2, 47) == 42); + CHECK(j.template value<number_integer_t>(key2, integer) == 42); + CHECK(j.template value<std::size_t>(key2, 0) == 42); + CHECK(j.template value<std::size_t>(key2, 47) == 42); + CHECK(j.template value<std::size_t>(key2, size) == 42); + + CHECK(j.template value<string_t>(key_notfound, "default") == "default"); + CHECK(j.template value<number_integer_t>(key_notfound, 0) == 0); + CHECK(j.template value<number_integer_t>(key_notfound, 47) == 47); + CHECK(j.template value<number_integer_t>(key_notfound, integer) == integer); + CHECK(j.template value<std::size_t>(key_notfound, 0) == 0); + CHECK(j.template value<std::size_t>(key_notfound, 47) == 47); + CHECK(j.template value<std::size_t>(key_notfound, size) == size); + + CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + + SECTION("string_t/object_t::key_type key") + { + string_t const key = "foo"; + string_t const key2 = "baz"; + string_t const key_notfound = "bar"; + + CHECK(j.template value<string_t>(key, "default") == "bar"); + CHECK(j.template value<string_t>(key, cpstr) == "bar"); + CHECK(j.template value<string_t>(key, castr) == "bar"); + CHECK(j.template value<string_t>(key, str) == "bar"); + CHECK(j.template value<number_integer_t>(key2, 0) == 42); + CHECK(j.template value<number_integer_t>(key2, 47) == 42); + CHECK(j.template value<std::size_t>(key2, 0) == 42); + CHECK(j.template value<std::size_t>(key2, 47) == 42); + + CHECK(j.template value<string_t>(key_notfound, "default") == "default"); + CHECK(j.template value<number_integer_t>(key_notfound, 0) == 0); + CHECK(j.template value<number_integer_t>(key_notfound, 47) == 47); + CHECK(j.template value<std::size_t>(key_notfound, 0) == 0); + CHECK(j.template value<std::size_t>(key_notfound, 47) == 47); + + CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } + +#ifdef JSON_HAS_CPP_17 + SECTION("std::string_view key") + { + std::string_view const key = "foo"; + std::string_view const key2 = "baz"; + std::string_view const key_notfound = "bar"; + + CHECK(j.template value<string_t>(key, "default") == "bar"); + CHECK(j.template value<string_t>(key, cpstr) == "bar"); + CHECK(j.template value<string_t>(key, castr) == "bar"); + CHECK(j.template value<string_t>(key, str) == "bar"); + CHECK(j.template value<number_integer_t>(key2, 0) == 42); + CHECK(j.template value<number_integer_t>(key2, 47) == 42); + CHECK(j.template value<number_integer_t>(key2, integer) == 42); + CHECK(j.template value<std::size_t>(key2, 0) == 42); + CHECK(j.template value<std::size_t>(key2, 47) == 42); + CHECK(j.template value<std::size_t>(key2, size) == 42); + + CHECK(j.template value<string_t>(key_notfound, "default") == "default"); + CHECK(j.template value<number_integer_t>(key_notfound, 0) == 0); + CHECK(j.template value<number_integer_t>(key_notfound, 47) == 47); + CHECK(j.template value<number_integer_t>(key_notfound, integer) == integer); + CHECK(j.template value<std::size_t>(key_notfound, 0) == 0); + CHECK(j.template value<std::size_t>(key_notfound, 47) == 47); + CHECK(j.template value<std::size_t>(key_notfound, size) == size); + + CHECK(j.template value<std::string_view>(key, "default") == "bar"); + CHECK(j.template value<std::string_view>(key, cpstr) == "bar"); + CHECK(j.template value<std::string_view>(key, castr) == "bar"); + CHECK(j.template value<std::string_view>(key, str) == "bar"); + + CHECK(j.template value<std::string_view>(key_notfound, "default") == "default"); + + CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&); + } +#endif + } +} + +#ifdef JSON_HAS_CPP_17 +TEST_CASE("operator[] with user-defined std::string_view-convertible types") +{ + using json = nlohmann::json; + + class TestClass + { + std::string key_data_ = "foo"; + + public: + operator std::string_view() const + { + return key_data_; + } + }; + + struct TestStruct + { + operator std::string_view() const + { + return "bar"; + } + }; + + json j = {{"foo", "from_class"}, {"bar", "from_struct"}}; + TestClass foo_obj; + TestStruct bar_obj; + + SECTION("read access") + { + CHECK(j[foo_obj] == "from_class"); + CHECK(j[TestClass{}] == "from_class"); + CHECK(j[bar_obj] == "from_struct"); + CHECK(j[TestStruct{}] == "from_struct"); + } + + SECTION("write access") + { + j[TestClass{}] = "updated_class"; + j[TestStruct{}] = "updated_struct"; + CHECK(j["foo"] == "updated_class"); + CHECK(j["bar"] == "updated_struct"); + + SECTION("direct std::string_view access") + { + CHECK(j[std::string_view{"foo"}] == "updated_class"); + CHECK(j[std::string_view{"bar"}] == "updated_struct"); + } + } +} +#endif |