diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..6b3cd48
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.14)
+project(EngineWrapper)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+add_executable(EngineWrapper main.cpp)
+target_include_directories(EngineWrapper PRIVATE src)
+
+add_subdirectory(tests)
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..aeecbc0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,166 @@
+# Engine-Wrapper лабораторная работа
+
+## Table of Contents //TODO
+
+- [Что такое ArgList](#ArgList)
+- [Wrapper](#Wrapper)
+    - [Описание конструкторов](#все-конструкторы-класса-wrapper-принимают)
+    - [`execute()`](#execute)
+    - [Примеры](#examples)
+- [Engine](#engine)
+  - [Что он может](#что-он-может)
+  - [Примеры](#примеры)
+- [Сборка и запуск](#сборка-и-запуск)
+
+---
+
+## `ArgList`
+
+### `using ArgList = std::vector<std::pair<std::string, std::any>>`
+
+### Возможный синтаксис:
+
+1. Пустой: `{}`
+2. 1 аргумент: `{{"a", 5}}`
+3. n аргументов: `{{"a", 6}, {...}, ..., {"z", 7}}`
+4. Можно просто использовать свой вектор
+
+---
+
+## `Wrapper`
+
+### Все конструкторы класса `Wrapper` принимают:
+
+1. Объект, указатель на объект, `unique_ptr` или `shared_ptr` на объект
+2. Ссылку на функцию (должна быть функцией объекта, статичные, константные, `volatile` функции не поддерживаются)
+3. `ArgList` - `{}` (empty) or `{{"a", 5}}` (первый аргумент функции теперь называется `a` и имеет дефолтное значение
+   `5`). Количество аргументов в ArgList должно точно совпадать с количеством аргументов функции, так как на этом этапе
+   мы даем им внутреннее имя, которое в дальнейшем будет использоваться при вызове функции
+
+### `execute()`
+
+- Принимает `ArgList`. Его размер должен быть не больше количества аргументов функции, а типы аргументов должны
+  совпадать (Если `a` раньше было `int`, то сейчас тоже должно быть `int`. Кастинг не поддерживается)
+- Сопоставляет аргументы по именам. Если в функции не передали какой-то аргумент, используется его дефолтное (указанное
+  при конструировании) значение
+
+### Examples:
+
+#### Какой-то класс `Subject`:
+
+```c++
+class Subject {
+public:
+    int double_it(int x) { return x * 2; }
+    double sum(double a, double b) { return a + b; }
+    void set_sum(int arg1, int arg2) { last_called = arg1 + arg2; }
+    std::string concat_num_to_string(const std::string& s, int n) { return s + std::to_string(n); }
+
+    int last_called = 0;
+};
+```
+
+#### Базовые use-case:
+
+1. `execute()` без аргументов:
+
+```c++
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 10}});
+    auto result = wrapper.execute({});
+    std::any_cast<int>(result); //== 10 * 2
+```
+
+2. `execute()` с аргументами:
+
+```c++
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    auto result = wrapper.execute({{"x", 7}});
+    std::any_cast<int>(result); // == 7 * 2
+```
+
+#### Все варианты использования конструктора:
+
+1. Копирование объекта внутрь (по `const ref`)
+
+```c++
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}}); //copies subj internally
+    auto result = wrapper.execute({{"arg1", 42}});
+    result.has_value(); //is false due to function returns void
+    subj.last_called; // == 0 as original object is not changed
+```
+
+2. Raw ptr. Будьте осторожны, очень велика вероятность нарваться на segfault, если `execute()` будет после того, как объект умрет. Используйте на свой страх и риск! Smart pointerы предпочтительнее.
+
+```c++
+    auto* subj = new Subject();
+    Wrapper wrapper(subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}}); //just stores raw ptr
+    auto result = wrapper.execute({{"arg1", 42}});
+    result.has_value(); //still false
+    subj->last_called; // == 43,  original object is changed
+    delete subj; //after deleting executing wrapper is UB, likely SEGFAULT, as raw pointer is just stored inside Wrapper
+```
+
+3. Unique ptr
+
+```c++
+    auto subj = std::make_unique<Subject>();
+    Subject* observer = subj.get();
+
+    Wrapper wrapper(std::move(subj), &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}}); //unique ptrs have to be moved
+    //subj is now nullptr
+    auto result = wrapper.execute({{"arg1", 42}});
+    result.has_value(); //still false
+    observer->last_called; // == 43, original object is changed
+```
+
+4. Shared ptr
+
+```c++
+    std::shared_ptr<Subject> subj = std::make_shared<Subject>();
+    Wrapper wrapper(subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}}); //copies shared ptr inside. Can be moved tho
+    auto result = wrapper.execute({{"arg1", 42}});
+    result.has_value(); //still false
+    subj->last_called; // == 43,  original object is changed
+```
+
+---
+
+## Engine
+Регистр зарегистрированных команд, которые можно запускать
+
+### Что он может:
+1. Зарегистрировать команду: `Engine.register_command("name", wrapper)`
+2. In-place создать `Wrapper` и зарегистрировать команду: `Engine.register_command("name", subj, Subject::sum, {{"a", 0}, {"b", 0}})` - поддерживает все конструкторы Wrapper'a (`subj` может быть raw ptr, const ref, unique ptr or shared ptr)
+3. Запускать команды: `Engine.execute("name", {/*args here*/})`
+
+
+Если команда не была зарегистрирована, выкинет `std::invalid_argument`
+Все ошибки, которые возникнут внутри `Wrapper`, в нем не обрабатываются и передаются дальше
+
+### Примеры:
+```c++
+    Engine engine;
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    engine.register_command("double_it", wrapper);
+
+    auto result = engine.execute("double_it", {{"x", 5}});
+    std::any_cast<int>(result); // 5*2
+```
+
+---
+
+## Tests
+Еще больше примеров и исходники тестов можно найти в папке [тестов](tests)
+
+## Сборка и запуск
+### Сконфигурируйте CMake:
+`cmake -S ./ -B ./build` (`-G Ninja` по желанию)
+
+### Сборка и запуск:
+1. Сборка: `cmake --build ./build`
+2. Запуск основной программы ([main.cpp](main.cpp)): `./build/EngineWrapper` - должно вывести 16
+3. Запуск тестов: `./build/tests/EngineWrapperTests` - тут GTests
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..8e17952
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+
+#include "Engine.hpp"
+#include "src/Wrapper.hpp"
+
+struct A {
+    int f(int a, int b) { return a + b; }
+};
+
+int main() {
+    A obj;
+    Wrapper w1(obj, &A::f, {{"a",0},{"b",0}});
+
+    Engine e;
+    e.register_command("w1", w1);
+    e.register_command("w2", std::move(w1));
+
+    std::cout << std::any_cast<int>(e.execute("w1", {{"b", 16}})) << std::endl;
+}
diff --git a/src/Engine.hpp b/src/Engine.hpp
new file mode 100644
index 0000000..a22a6fb
--- /dev/null
+++ b/src/Engine.hpp
@@ -0,0 +1,40 @@
+#pragma once
+
+#include <any>
+#include <memory>
+#include <stdexcept>
+#include <string>
+#include <unordered_map>
+
+#include "Wrapper.hpp"
+
+class Engine {
+public:
+    template <typename T, typename Ret, typename... Args>
+    void register_command(const std::string& name, const Wrapper<T, Ret, Args...>& wrapper) {
+        wrappers.emplace(name, std::make_unique<Wrapper<T, Ret, Args...>>(wrapper));
+    }
+
+    template <typename Obj, typename T, typename Ret, typename... Args>
+    void register_command(
+        const std::string& name,
+        Obj obj,
+        Ret (T::*func)(Args...),
+        const WrapperBase::ArgList& argList
+    ) {
+        wrappers.emplace(name, std::make_unique<Wrapper<T, Ret, Args...>>(std::move(obj), func, argList));
+    }
+
+
+    std::any execute(const std::string& command_name, const WrapperBase::ArgList& args) {
+        auto it = wrappers.find(command_name);
+        if (it == wrappers.end()) {
+            throw std::invalid_argument("Command not found: " + command_name);
+        }
+
+        return it->second->execute(args);
+    }
+
+private:
+    std::unordered_map<std::string, std::unique_ptr<WrapperBase>> wrappers;
+};
diff --git a/src/Wrapper.hpp b/src/Wrapper.hpp
new file mode 100644
index 0000000..e5f9ab7
--- /dev/null
+++ b/src/Wrapper.hpp
@@ -0,0 +1,127 @@
+#pragma once
+
+#include <any>
+#include <functional>
+#include <stdexcept>
+#include <string>
+#include <typeindex>
+#include <unordered_map>
+
+#include "WrapperBase.hpp"
+
+
+// T is a object type
+// Ret is a function's return type
+// Args is a function's parameters types
+template <typename T, typename Ret, typename... Args>
+class Wrapper : public WrapperBase {
+    static constexpr size_t ARG_COUNT = sizeof...(Args);
+
+    using ArgMap = std::unordered_map<std::string, std::any>;
+    using Func = Ret (T::*)(Args...);
+
+    Func _func;
+
+    std::function<T&()> _get_obj;
+
+    ArgList argNames;
+    std::array<std::type_index, ARG_COUNT> argTypes = {typeid(Args)...};
+
+    template <typename R = Ret, std::size_t... Indices>
+    std::enable_if_t<!std::is_void_v<R>, std::any>
+    invoke_function(const std::array<std::any, ARG_COUNT>& args, std::index_sequence<Indices...>) const {
+        return (_get_obj().*_func)(std::any_cast<Args>(args[Indices])...);
+    }
+
+    // Helper for void return
+    template <typename R = Ret, std::size_t... Indices>
+    std::enable_if_t<std::is_void_v<R>, std::any>
+    invoke_function(const std::array<std::any, ARG_COUNT>& args, std::index_sequence<Indices...>) const {
+        (_get_obj().*_func)(std::any_cast<Args>(args[Indices])...);
+        return {};
+    }
+
+public:
+    Wrapper(T* obj, Func func, const ArgList& argList):
+        _get_obj([obj]() -> T& { return *obj; }),
+        _func(func),
+        argNames(argList) {
+        if (argList.size() != ARG_COUNT)
+            throw std::invalid_argument("Wrong number of arguments");
+    }
+
+    Wrapper(const T& obj, Func func, const ArgList& argList):
+        _get_obj([owned = T(obj)]() mutable -> T& { return owned; }),
+        _func(func),
+        argNames(argList) {
+        if (argList.size() != ARG_COUNT)
+            throw std::invalid_argument("Wrong number of arguments");
+    }
+
+    Wrapper(std::shared_ptr<T> obj, Func func, const ArgList& argList):
+        _get_obj([obj = std::move(obj)]() -> T& { return *obj; }),
+        _func(func)
+        , argNames(argList) {
+        if (argList.size() != ARG_COUNT)
+            throw std::invalid_argument("Wrong number of arguments");
+    }
+
+    Wrapper(std::unique_ptr<T> obj, Func func, const ArgList& argList):
+        _get_obj([obj = std::shared_ptr<T>(std::move(obj))]() -> T& { return *obj; }),
+        _func(func),
+        argNames(argList) {
+        if (argList.size() != ARG_COUNT)
+            throw std::invalid_argument("Wrong number of arguments");
+    }
+
+    Wrapper(const Wrapper& other): _get_obj(other._get_obj), _func(other._func),
+                                   argNames(other.argNames) {}
+
+    Wrapper(Wrapper&& other) noexcept : _get_obj(other._get_obj), _func(std::move(other._func)),
+                                        argNames(std::move(other.argNames)) {}
+
+    Wrapper& operator=(const Wrapper& other) {
+        if (this != &other) {
+            _get_obj = other._get_obj;
+            _func = other._func;
+            argNames = other.argNames;
+        }
+        return *this;
+    }
+
+    Wrapper& operator=(Wrapper&& other) noexcept {
+        if (this != &other) {
+            _get_obj = std::move(other._get_obj);
+            _func = other._func;
+            argNames = std::move(other.argNames);
+        }
+        return *this;
+    }
+
+
+    std::any execute(const ArgList& list) const override {
+        if (list.size() > ARG_COUNT) {
+            throw std::invalid_argument("Too many arguments");
+        }
+        std::array<std::any, ARG_COUNT> args;
+
+        for (size_t i = 0; i < ARG_COUNT; i++) {
+            const auto& [name, def] = argNames[i];
+            auto it = std::find_if(list.begin(), list.end(), [&name](const std::pair<std::string, std::any>& arg) {
+                return arg.first == name;
+            });
+
+            if (it == list.end()) {
+                args[i] = def;
+            }
+            else {
+                if (it->second.type() != argTypes[i]) {
+                    throw std::invalid_argument("Type mismatch for argument: " + name);
+                }
+                args[i] = it->second;
+            }
+        }
+
+        return invoke_function(args, std::make_index_sequence<ARG_COUNT>{});
+    }
+};
diff --git a/src/WrapperBase.hpp b/src/WrapperBase.hpp
new file mode 100644
index 0000000..2ae1755
--- /dev/null
+++ b/src/WrapperBase.hpp
@@ -0,0 +1,12 @@
+#pragma once
+#include <any>
+#include <vector>
+#include <string>
+
+class WrapperBase {
+public:
+    using ArgList = std::vector<std::pair<std::string, std::any>>;
+
+    virtual std::any execute(const ArgList& args) const = 0;
+    virtual ~WrapperBase() = default;
+};
\ No newline at end of file
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
new file mode 100644
index 0000000..4470be7
--- /dev/null
+++ b/tests/CMakeLists.txt
@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.14)
+project(EngineWrapperTests)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(FetchContent)
+FetchContent_Declare(
+        googletest
+        URL https://github.com/google/googletest/archive/refs/tags/v1.14.0.zip
+        DOWNLOAD_EXTRACT_TIMESTAMP TRUE
+)
+FetchContent_MakeAvailable(googletest)
+
+file(GLOB TEST_SOURCES "*.cpp")
+add_executable(EngineWrapperTests ${TEST_SOURCES})
+target_link_libraries(EngineWrapperTests gtest gtest_main)
+target_include_directories(EngineWrapperTests PRIVATE ../src)
+
diff --git a/tests/engine_test.cpp b/tests/engine_test.cpp
new file mode 100644
index 0000000..17ee40e
--- /dev/null
+++ b/tests/engine_test.cpp
@@ -0,0 +1,111 @@
+#include <gtest/gtest.h>
+#include <any>
+#include <string>
+#include <vector>
+
+#include "Engine.hpp"
+#include "Wrapper.hpp"
+
+class Subject {
+public:
+    int double_it(int x) { return x * 2; }
+    double sum(double a, double b) { return a + b; }
+    void set_sum(int arg1, int arg2) { last_called = arg1 + arg2; }
+    std::string concat_num_to_string(const std::string& s, int n) { return s + std::to_string(n); }
+
+    int last_called = 0;
+};
+
+
+TEST(EngineTest, RegisterAndExecuteCommand) {
+    Engine engine;
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    engine.register_command("double_it", wrapper);
+
+    auto result = engine.execute("double_it", {{"x", 5}});
+    EXPECT_EQ(std::any_cast<int>(result), 10);
+}
+
+TEST(EngineTest, ExecuteNonExistentCommandThrows) {
+    Engine engine;
+    EXPECT_THROW(
+        engine.execute("nonexistent", {}),
+        std::invalid_argument
+    );
+}
+
+TEST(EngineTest, ExecuteCommandWithWrongArgTypePropagatesError) {
+    Engine engine;
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    engine.register_command("double_it", wrapper);
+
+    EXPECT_THROW(
+        engine.execute("double_it", {{"x", std::string("hello")}}),
+        std::invalid_argument
+    );
+}
+
+TEST(EngineTest, RegisterWithCtorArgs) {
+    Engine engine;
+    Subject subj;
+    engine.register_command("double", &subj, &Subject::double_it, WrapperBase::ArgList{{"x", 0}});
+}
+
+TEST(EngineTest, MultipleCommands) {
+    Engine engine;
+    Subject subj;
+
+    engine.register_command("double", &subj, &Subject::double_it, WrapperBase::ArgList{{"x", 0}});
+    engine.register_command("add", &subj, &Subject::sum, {{"a", 0.0}, {"b", 0.0}});
+    engine.register_command("set_last", &subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 0}});
+
+    auto result1 = engine.execute("double", {{"x", 3}});
+    EXPECT_EQ(std::any_cast<int>(result1), 6);
+
+    auto result2 = engine.execute("add", {{"a", 2.5}, {"b", 3.5}});
+    EXPECT_DOUBLE_EQ(std::any_cast<double>(result2), 6.0);
+
+    engine.execute("set_last", {{"arg1", 10}, {"arg2", 20}});
+    EXPECT_EQ(subj.last_called, 30);
+}
+
+
+TEST(EngineTest, RegisterWithConstRef) {
+    Subject subj;
+    Engine engine;
+    engine.register_command("sum", subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}});
+    auto result = engine.execute("sum", {{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(subj.last_called, 0); //original object is not changed
+}
+
+TEST(EngineTest, RegisterWithRawPtr) {
+    auto* subj = new Subject();
+    Engine engine;
+    engine.register_command("sum", subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}});
+    auto result = engine.execute("sum", {{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(subj->last_called, 43); //original object is changed
+}
+
+TEST(EngineTest, RegisterWithUniquePtr) {
+    auto subj = std::make_unique<Subject>();
+    Subject* observer = subj.get();
+
+    Engine engine;
+    engine.register_command("sum", std::move(subj), &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}});
+    auto result = engine.execute("sum", {{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(observer->last_called, 43); //original object is changed
+}
+
+TEST(EngineTest, RegisterWithSharedPtr) {
+    std::shared_ptr<Subject> subj = std::make_shared<Subject>();
+    Engine engine;
+    engine.register_command("sum", subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}});
+    auto result = engine.execute("sum", {{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(subj->last_called, 43); //original object is changed
+}
diff --git a/tests/wrapper_test.cpp b/tests/wrapper_test.cpp
new file mode 100644
index 0000000..a870d49
--- /dev/null
+++ b/tests/wrapper_test.cpp
@@ -0,0 +1,169 @@
+#include <gtest/gtest.h>
+#include <any>
+#include <string>
+#include <vector>
+
+#include "Wrapper.hpp"
+
+class Subject {
+public:
+    int double_it(int x) { return x * 2; }
+    double sum(double a, double b) { return a + b; }
+    void set_sum(int arg1, int arg2) { last_called = arg1 + arg2; }
+    std::string concat_num_to_string(const std::string& s, int n) { return s + std::to_string(n); }
+
+    int last_called = 0;
+};
+
+TEST(WrapperTest, ConstructorValidArgs) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    EXPECT_NO_THROW(wrapper.execute({{"x", 5}}));
+}
+
+TEST(WrapperTest, ConstructorInvalidArgCountThrows) {
+    Subject subj;
+    const auto ctor = [&subj]() {
+        Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}, {"y", 0}});
+    };
+    EXPECT_THROW(
+        ctor(),
+        std::invalid_argument
+    );
+}
+
+TEST(WrapperTest, ExecuteWithDefaultValues) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 10}});
+    auto result = wrapper.execute({});
+    EXPECT_EQ(std::any_cast<int>(result), 20); // 10 * 2
+}
+
+TEST(WrapperTest, ExecuteWithProvidedValues) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    auto result = wrapper.execute({{"x", 7}});
+    EXPECT_EQ(std::any_cast<int>(result), 14); // 7 * 2
+}
+
+TEST(WrapperTest, ExecuteWithWrongArgumentNameIgnored) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    auto result = wrapper.execute({{"wrong_name", 99}});
+    EXPECT_EQ(std::any_cast<int>(result), 0);
+}
+
+TEST(WrapperTest, ExecuteWithTypeMismatchThrows) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    EXPECT_THROW(
+        wrapper.execute({{"x", std::string("not_an_int")}}),
+        std::invalid_argument
+    );
+}
+
+TEST(WrapperTest, ExecuteVoidFunction) {
+    Subject subj;
+    Wrapper wrapper(&subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 0}});
+    EXPECT_NO_THROW(wrapper.execute({{"arg1", 3}, {"arg2", 4}}));
+    EXPECT_EQ(subj.last_called, 7); // 3+4
+}
+
+TEST(WrapperTest, ExecuteVoidFunctionReturnsEmptyAny) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 0}});
+    auto result = wrapper.execute({{"arg1", 1}, {"arg2", 2}});
+    EXPECT_FALSE(result.has_value()); //void = no value
+}
+
+TEST(WrapperTest, CopyConstructor) {
+    Subject subj;
+    Wrapper wrapper1(subj, &Subject::double_it, {{"x", 0}});
+    Wrapper wrapper2(wrapper1);
+    auto result = wrapper2.execute({{"x", 6}});
+    EXPECT_EQ(std::any_cast<int>(result), 12);
+}
+
+TEST(WrapperTest, MoveConstructor) {
+    Subject subj;
+    Wrapper wrapper1(subj, &Subject::double_it, {{"x", 0}});
+    Wrapper wrapper2(std::move(wrapper1));
+    auto result = wrapper2.execute({{"x", 8}});
+    EXPECT_EQ(std::any_cast<int>(result), 16);
+}
+
+TEST(WrapperTest, ExecuteWithTooManyArgsThrows) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::double_it, {{"x", 0}});
+    EXPECT_THROW(
+        wrapper.execute({{"x", 5}, {"extra", 99}}), // extra arg
+        std::invalid_argument
+    );
+}
+
+TEST(WrapperTest, FunctionWithMultipleParameters) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::sum, {{"a", 0.0}, {"b", 0.0}});
+    auto result = wrapper.execute({{"a", 1.5}, {"b", 2.5}});
+    EXPECT_DOUBLE_EQ(std::any_cast<double>(result), 4.0);
+}
+
+TEST(WrapperTest, FunctionWithStringParameter) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::concat_num_to_string, {{"s", std::string("")}, {"n", 0}});
+    auto result = wrapper.execute({{"s", std::string("Hello")}, {"n", 42}});
+    EXPECT_EQ(std::any_cast<std::string>(result), "Hello42");
+}
+
+TEST(WrapperTest, DefaultValueForString) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::concat_num_to_string, {{"s", std::string("Default")}, {"n", 0}});
+    auto result = wrapper.execute({{"n", 100}});
+    EXPECT_EQ(std::any_cast<std::string>(result), "Default100");
+}
+
+TEST(WrapperTest, ExecuteVoidFunctionWithNoReturn) {
+    Subject subj;
+    Wrapper wrapper(&subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}});
+    auto result = wrapper.execute({{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(subj.last_called, 43);
+}
+
+
+TEST(WrapperTest, ConstructWithConstRef) {
+    Subject subj;
+    Wrapper wrapper(subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}}); //copies subj internally
+    auto result = wrapper.execute({{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(subj.last_called, 0); //original object is not changed
+}
+
+TEST(WrapperTest, ConstructWithRawPtr) {
+    auto* subj = new Subject();
+    Wrapper wrapper(subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}}); //just stores raw ptr
+    auto result = wrapper.execute({{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(subj->last_called, 43); //original object is changed
+
+    delete subj; //after deleting executing wrapper is UB, likely SEGFAULT
+}
+
+TEST(WrapperTest, ConstructWithUniquePtr) {
+    auto subj = std::make_unique<Subject>();
+    Subject* observer = subj.get();
+
+    Wrapper wrapper(std::move(subj), &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}}); //unique ptrs have to be moved
+
+    auto result = wrapper.execute({{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(observer->last_called, 43);
+}
+
+TEST(WrapperTest, ConstructWithSharedPtr) {
+    std::shared_ptr<Subject> subj = std::make_shared<Subject>();
+    Wrapper wrapper(subj, &Subject::set_sum, {{"arg1", 0}, {"arg2", 1}}); //copies shared ptr inside. Can be moved tho
+    auto result = wrapper.execute({{"arg1", 42}});
+    EXPECT_FALSE(result.has_value());
+    EXPECT_EQ(subj->last_called, 43); //original object is changed
+}
\ No newline at end of file