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-rw-r--r--json4cpp/tests/src/unit-pointer_access.cpp479
1 files changed, 479 insertions, 0 deletions
diff --git a/json4cpp/tests/src/unit-pointer_access.cpp b/json4cpp/tests/src/unit-pointer_access.cpp
new file mode 100644
index 0000000000..c1e3419171
--- /dev/null
+++ b/json4cpp/tests/src/unit-pointer_access.cpp
@@ -0,0 +1,479 @@
+// __ _____ _____ _____
+// __| | __| | | | 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>
+using nlohmann::json;
+
+TEST_CASE("pointer access")
+{
+ SECTION("pointer access to object_t")
+ {
+ using test_type = json::object_t;
+ json value = {{"one", 1}, {"two", 2}};
+
+ // check if pointers are returned correctly
+ const test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<json::object_t*>() != nullptr);
+ CHECK(value.get_ptr<json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to const object_t")
+ {
+ using test_type = const json::object_t;
+ const json value = {{"one", 1}, {"two", 2}};
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() != nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to array_t")
+ {
+ using test_type = json::array_t;
+ json value = {1, 2, 3, 4};
+
+ // check if pointers are returned correctly
+ const test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<json::array_t*>() != nullptr);
+ CHECK(value.get_ptr<json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to const array_t")
+ {
+ using test_type = const json::array_t;
+ const json value = {1, 2, 3, 4};
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() != nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to string_t")
+ {
+ using test_type = json::string_t;
+ json value = "hello";
+
+ // check if pointers are returned correctly
+ const test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<json::string_t*>() != nullptr);
+ CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to const string_t")
+ {
+ using test_type = const json::string_t;
+ const json value = "hello";
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() != nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to boolean_t")
+ {
+ using test_type = json::boolean_t;
+ json value = false;
+
+ // check if pointers are returned correctly
+ const test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<json::boolean_t*>() != nullptr);
+ CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to const boolean_t")
+ {
+ using test_type = const json::boolean_t;
+ const json value = false;
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ //CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() != nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to number_integer_t")
+ {
+ using test_type = json::number_integer_t;
+ json value = 23;
+
+ // check if pointers are returned correctly
+ const test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_integer_t*>() != nullptr);
+ CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to const number_integer_t")
+ {
+ using test_type = const json::number_integer_t;
+ const json value = 23;
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() != nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to number_unsigned_t")
+ {
+ using test_type = json::number_unsigned_t;
+ json value = 23u;
+
+ // check if pointers are returned correctly
+ const test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_unsigned_t*>() != nullptr);
+ CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to const number_unsigned_t")
+ {
+ using test_type = const json::number_unsigned_t;
+ const json value = 23u;
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() != nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to number_float_t")
+ {
+ using test_type = json::number_float_t;
+ json value = 42.23;
+
+ // check if pointers are returned correctly
+ const test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == Approx(value.get<test_type>()));
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == Approx(value.get<test_type>()));
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == Approx(value.get<test_type>()));
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<json::number_float_t*>() != nullptr);
+ CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to const number_float_t")
+ {
+ using test_type = const json::number_float_t;
+ const json value = 42.23;
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == Approx(value.get<test_type>()));
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == Approx(value.get<test_type>()));
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == Approx(value.get<test_type>()));
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() != nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+ }
+
+ SECTION("pointer access to const binary_t")
+ {
+ using test_type = const json::binary_t;
+ const json value = json::binary({1, 2, 3});
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() != nullptr);
+ }
+
+ SECTION("pointer access to const binary_t")
+ {
+ using test_type = const json::binary_t;
+ const json value = json::binary({});
+
+ // check if pointers are returned correctly
+ test_type* p1 = value.get_ptr<test_type*>();
+ CHECK(p1 == value.get_ptr<test_type*>());
+ CHECK(*p1 == value.get<test_type>());
+
+ const test_type* p2 = value.get_ptr<const test_type*>();
+ CHECK(p2 == value.get_ptr<const test_type*>());
+ CHECK(*p2 == value.get<test_type>());
+
+ const test_type* const p3 = value.get_ptr<const test_type* const>();
+ CHECK(p3 == value.get_ptr<const test_type* const>());
+ CHECK(*p3 == value.get<test_type>());
+
+ // check if null pointers are returned correctly
+ CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+ CHECK(value.get_ptr<const json::binary_t*>() != nullptr);
+ }
+}
generated by cgit 0.0.5-2-1-g0f52 (git 2.46.0) at 2026-04-06 01:15:35 +0000