Add 'json4cpp/' from commit '9a737481aed085fd289f82dff1fa8c3c66627a7e'

git-subtree-dir: json4cpp
git-subtree-mainline: 292baed7ac0cf84263263966ed32ed113cae857f
git-subtree-split: 9a737481aed085fd289f82dff1fa8c3c66627a7e

1 files changed, 297 insertions, 0 deletions

diff --git a/json4cpp/tests/src/unit-serialization.cpp b/json4cpp/tests/src/unit-serialization.cpp
new file mode 100644
index 0000000000..5c2ab81482
--- /dev/null
+++ b/json4cpp/tests/src/unit-serialization.cpp
@@ -0,0 +1,297 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  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;
+
+#include <sstream>
+#include <iomanip>
+
+TEST_CASE("serialization")
+{
+    SECTION("operator<<")
+    {
+        SECTION("no given width")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss << j;
+            CHECK(ss.str() == "[\"foo\",1,2,3,false,{\"one\":1}]");
+        }
+
+        SECTION("given width")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss << std::setw(4) << j;
+            CHECK(ss.str() ==
+                  "[\n    \"foo\",\n    1,\n    2,\n    3,\n    false,\n    {\n        \"one\": 1\n    }\n]");
+        }
+
+        SECTION("given fill")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss << std::setw(1) << std::setfill('\t') << j;
+            CHECK(ss.str() ==
+                  "[\n\t\"foo\",\n\t1,\n\t2,\n\t3,\n\tfalse,\n\t{\n\t\t\"one\": 1\n\t}\n]");
+        }
+    }
+
+    SECTION("operator>>")
+    {
+        SECTION("no given width")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            j >> ss;
+            CHECK(ss.str() == "[\"foo\",1,2,3,false,{\"one\":1}]");
+        }
+
+        SECTION("given width")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss.width(4);
+            j >> ss;
+            CHECK(ss.str() ==
+                  "[\n    \"foo\",\n    1,\n    2,\n    3,\n    false,\n    {\n        \"one\": 1\n    }\n]");
+        }
+
+        SECTION("given fill")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss.width(1);
+            ss.fill('\t');
+            j >> ss;
+            CHECK(ss.str() ==
+                  "[\n\t\"foo\",\n\t1,\n\t2,\n\t3,\n\tfalse,\n\t{\n\t\t\"one\": 1\n\t}\n]");
+        }
+    }
+
+    SECTION("dump")
+    {
+        SECTION("invalid character")
+        {
+            const json j = "ä\xA9ü";
+
+            CHECK_THROWS_WITH_AS(j.dump(), "[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9", json::type_error&);
+            CHECK_THROWS_WITH_AS(j.dump(1, ' ', false, json::error_handler_t::strict), "[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9", json::type_error&);
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"äü\"");
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"ä\xEF\xBF\xBDü\"");
+            CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"\\u00e4\\ufffd\\u00fc\"");
+        }
+
+        SECTION("ending with incomplete character")
+        {
+            const json j = "123\xC2";
+
+            CHECK_THROWS_WITH_AS(j.dump(), "[json.exception.type_error.316] incomplete UTF-8 string; last byte: 0xC2", json::type_error&);
+            CHECK_THROWS_AS(j.dump(1, ' ', false, json::error_handler_t::strict), json::type_error&);
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"123\"");
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"123\xEF\xBF\xBD\"");
+            CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"123\\ufffd\"");
+        }
+
+        SECTION("unexpected character")
+        {
+            const json j = "123\xF1\xB0\x34\x35\x36";
+
+            CHECK_THROWS_WITH_AS(j.dump(), "[json.exception.type_error.316] invalid UTF-8 byte at index 5: 0x34", json::type_error&);
+            CHECK_THROWS_AS(j.dump(1, ' ', false, json::error_handler_t::strict), json::type_error&);
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"123456\"");
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"123\xEF\xBF\xBD\x34\x35\x36\"");
+            CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"123\\ufffd456\"");
+        }
+
+        SECTION("U+FFFD Substitution of Maximal Subparts")
+        {
+            // Some tests (mostly) from
+            // https://www.unicode.org/versions/Unicode11.0.0/ch03.pdf
+            // Section 3.9 -- U+FFFD Substitution of Maximal Subparts
+
+            auto test = [&](std::string const & input, std::string const & expected)
+            {
+                const json j = input;
+                CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"" + expected + "\"");
+            };
+
+            test("\xC2", "\\ufffd");
+            test("\xC2\x41\x42", "\\ufffd" "\x41" "\x42");
+            test("\xC2\xF4", "\\ufffd" "\\ufffd");
+
+            test("\xF0\x80\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+            test("\xF1\x80\x80\x41", "\\ufffd" "\x41");
+            test("\xF2\x80\x80\x41", "\\ufffd" "\x41");
+            test("\xF3\x80\x80\x41", "\\ufffd" "\x41");
+            test("\xF4\x80\x80\x41", "\\ufffd" "\x41");
+            test("\xF5\x80\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+
+            test("\xF0\x90\x80\x41", "\\ufffd" "\x41");
+            test("\xF1\x90\x80\x41", "\\ufffd" "\x41");
+            test("\xF2\x90\x80\x41", "\\ufffd" "\x41");
+            test("\xF3\x90\x80\x41", "\\ufffd" "\x41");
+            test("\xF4\x90\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+            test("\xF5\x90\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+
+            test("\xC0\xAF\xE0\x80\xBF\xF0\x81\x82\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+            test("\xED\xA0\x80\xED\xBF\xBF\xED\xAF\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+            test("\xF4\x91\x92\x93\xFF\x41\x80\xBF\x42", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41" "\\ufffd""\\ufffd" "\x42");
+            test("\xE1\x80\xE2\xF0\x91\x92\xF1\xBF\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+        }
+    }
+
+    SECTION("to_string")
+    {
+        auto test = [&](std::string const & input, std::string const & expected)
+        {
+            using std::to_string;
+            const json j = input;
+            CHECK(to_string(j) == "\"" + expected + "\"");
+        };
+
+        test(R"({"x":5,"y":6})", R"({\"x\":5,\"y\":6})");
+        test("{\"x\":[10,null,null,null]}", R"({\"x\":[10,null,null,null]})");
+        test("test", "test");
+        test("[3,\"false\",false]", R"([3,\"false\",false])");
+    }
+}
+
+TEST_CASE_TEMPLATE("serialization for extreme integer values", T, int32_t, uint32_t, int64_t, uint64_t) // NOLINT(readability-math-missing-parentheses, bugprone-throwing-static-initialization)
+{
+    SECTION("minimum")
+    {
+        constexpr auto minimum = (std::numeric_limits<T>::min)();
+        const json j = minimum;
+        CHECK(j.dump() == std::to_string(minimum));
+    }
+
+    SECTION("maximum")
+    {
+        constexpr auto maximum = (std::numeric_limits<T>::max)();
+        const json j = maximum;
+        CHECK(j.dump() == std::to_string(maximum));
+    }
+}
+
+TEST_CASE("dump with binary values")
+{
+    auto binary = json::binary({1, 2, 3, 4});
+    auto binary_empty = json::binary({});
+    auto binary_with_subtype = json::binary({1, 2, 3, 4}, 128);
+    auto binary_empty_with_subtype = json::binary({}, 128);
+
+    const json object = {{"key", binary}};
+    const json object_empty = {{"key", binary_empty}};
+    const json object_with_subtype = {{"key", binary_with_subtype}};
+    const json object_empty_with_subtype = {{"key", binary_empty_with_subtype}};
+
+    const json array = {"value", 1, binary};
+    const json array_empty = {"value", 1, binary_empty};
+    const json array_with_subtype = {"value", 1, binary_with_subtype};
+    const json array_empty_with_subtype = {"value", 1, binary_empty_with_subtype};
+
+    SECTION("normal")
+    {
+        CHECK(binary.dump() == "{\"bytes\":[1,2,3,4],\"subtype\":null}");
+        CHECK(binary_empty.dump() == "{\"bytes\":[],\"subtype\":null}");
+        CHECK(binary_with_subtype.dump() == "{\"bytes\":[1,2,3,4],\"subtype\":128}");
+        CHECK(binary_empty_with_subtype.dump() == "{\"bytes\":[],\"subtype\":128}");
+
+        CHECK(object.dump() == "{\"key\":{\"bytes\":[1,2,3,4],\"subtype\":null}}");
+        CHECK(object_empty.dump() == "{\"key\":{\"bytes\":[],\"subtype\":null}}");
+        CHECK(object_with_subtype.dump() == "{\"key\":{\"bytes\":[1,2,3,4],\"subtype\":128}}");
+        CHECK(object_empty_with_subtype.dump() == "{\"key\":{\"bytes\":[],\"subtype\":128}}");
+
+        CHECK(array.dump() == "[\"value\",1,{\"bytes\":[1,2,3,4],\"subtype\":null}]");
+        CHECK(array_empty.dump() == "[\"value\",1,{\"bytes\":[],\"subtype\":null}]");
+        CHECK(array_with_subtype.dump() == "[\"value\",1,{\"bytes\":[1,2,3,4],\"subtype\":128}]");
+        CHECK(array_empty_with_subtype.dump() == "[\"value\",1,{\"bytes\":[],\"subtype\":128}]");
+    }
+
+    SECTION("pretty-printed")
+    {
+        CHECK(binary.dump(4) == "{\n"
+              "    \"bytes\": [1, 2, 3, 4],\n"
+              "    \"subtype\": null\n"
+              "}");
+        CHECK(binary_empty.dump(4) == "{\n"
+              "    \"bytes\": [],\n"
+              "    \"subtype\": null\n"
+              "}");
+        CHECK(binary_with_subtype.dump(4) == "{\n"
+              "    \"bytes\": [1, 2, 3, 4],\n"
+              "    \"subtype\": 128\n"
+              "}");
+        CHECK(binary_empty_with_subtype.dump(4) == "{\n"
+              "    \"bytes\": [],\n"
+              "    \"subtype\": 128\n"
+              "}");
+
+        CHECK(object.dump(4) == "{\n"
+              "    \"key\": {\n"
+              "        \"bytes\": [1, 2, 3, 4],\n"
+              "        \"subtype\": null\n"
+              "    }\n"
+              "}");
+        CHECK(object_empty.dump(4) == "{\n"
+              "    \"key\": {\n"
+              "        \"bytes\": [],\n"
+              "        \"subtype\": null\n"
+              "    }\n"
+              "}");
+        CHECK(object_with_subtype.dump(4) == "{\n"
+              "    \"key\": {\n"
+              "        \"bytes\": [1, 2, 3, 4],\n"
+              "        \"subtype\": 128\n"
+              "    }\n"
+              "}");
+        CHECK(object_empty_with_subtype.dump(4) == "{\n"
+              "    \"key\": {\n"
+              "        \"bytes\": [],\n"
+              "        \"subtype\": 128\n"
+              "    }\n"
+              "}");
+
+        CHECK(array.dump(4) == "[\n"
+              "    \"value\",\n"
+              "    1,\n"
+              "    {\n"
+              "        \"bytes\": [1, 2, 3, 4],\n"
+              "        \"subtype\": null\n"
+              "    }\n"
+              "]");
+        CHECK(array_empty.dump(4) == "[\n"
+              "    \"value\",\n"
+              "    1,\n"
+              "    {\n"
+              "        \"bytes\": [],\n"
+              "        \"subtype\": null\n"
+              "    }\n"
+              "]");
+        CHECK(array_with_subtype.dump(4) == "[\n"
+              "    \"value\",\n"
+              "    1,\n"
+              "    {\n"
+              "        \"bytes\": [1, 2, 3, 4],\n"
+              "        \"subtype\": 128\n"
+              "    }\n"
+              "]");
+        CHECK(array_empty_with_subtype.dump(4) == "[\n"
+              "    \"value\",\n"
+              "    1,\n"
+              "    {\n"
+              "        \"bytes\": [],\n"
+              "        \"subtype\": 128\n"
+              "    }\n"
+              "]");
+    }
+}