diff --git a/praktikum/__init__.py b/praktikum/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/praktikum/bun.py b/praktikum/bun.py
new file mode 100644
index 000000000..5504bc1f4
--- /dev/null
+++ b/praktikum/bun.py
@@ -0,0 +1,15 @@
+class Bun:
+    """
+    Модель булочки для бургера.
+    Булочке можно дать название и назначить цену.
+    """
+
+    def __init__(self, name: str, price: float):
+        self.name = name
+        self.price = price
+
+    def get_name(self) -> str:
+        return self.name
+
+    def get_price(self) -> float:
+        return self.price
diff --git a/praktikum/burger.py b/praktikum/burger.py
new file mode 100644
index 000000000..2b3b6a88b
--- /dev/null
+++ b/praktikum/burger.py
@@ -0,0 +1,48 @@
+from typing import List
+
+from praktikum.bun import Bun
+from praktikum.ingredient import Ingredient
+
+
+class Burger:
+    """
+    Модель бургера.
+    Бургер состоит из булочек и ингредиентов (начинка или соус).
+    Ингредиенты можно перемещать и удалять.
+    Можно распечать чек с информацией о бургере.
+    """
+
+    def __init__(self):
+        self.bun = None
+        self.ingredients: List[Ingredient] = []
+
+    def set_buns(self, bun: Bun):
+        self.bun = bun
+
+    def add_ingredient(self, ingredient: Ingredient):
+        self.ingredients.append(ingredient)
+
+    def remove_ingredient(self, index: int):
+        del self.ingredients[index]
+
+    def move_ingredient(self, index: int, new_index: int):
+        self.ingredients.insert(new_index, self.ingredients.pop(index))
+
+    def get_price(self) -> float:
+        price = self.bun.get_price() * 2
+
+        for ingredient in self.ingredients:
+            price += ingredient.get_price()
+
+        return price
+
+    def get_receipt(self) -> str:
+        receipt: List[str] = [f'(==== {self.bun.get_name()} ====)']
+
+        for ingredient in self.ingredients:
+            receipt.append(f'= {str(ingredient.get_type()).lower()} {ingredient.get_name()} =')
+
+        receipt.append(f'(==== {self.bun.get_name()} ====)\n')
+        receipt.append(f'Price: {self.get_price()}')
+
+        return '\n'.join(receipt)
diff --git a/praktikum/database.py b/praktikum/database.py
new file mode 100644
index 000000000..4c75baf71
--- /dev/null
+++ b/praktikum/database.py
@@ -0,0 +1,33 @@
+from typing import List
+
+from praktikum.bun import Bun
+from praktikum.ingredient import Ingredient
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+
+class Database:
+    """
+    Класс с методами по работе с базой данных.
+    """
+
+    def __init__(self):
+        self.buns: List[Bun] = []
+        self.ingredients: List[Ingredient] = []
+
+        self.buns.append(Bun("black bun", 100))
+        self.buns.append(Bun("white bun", 200))
+        self.buns.append(Bun("red bun", 300))
+
+        self.ingredients.append(Ingredient(INGREDIENT_TYPE_SAUCE, "hot sauce", 100))
+        self.ingredients.append(Ingredient(INGREDIENT_TYPE_SAUCE, "sour cream", 200))
+        self.ingredients.append(Ingredient(INGREDIENT_TYPE_SAUCE, "chili sauce", 300))
+
+        self.ingredients.append(Ingredient(INGREDIENT_TYPE_FILLING, "cutlet", 100))
+        self.ingredients.append(Ingredient(INGREDIENT_TYPE_FILLING, "dinosaur", 200))
+        self.ingredients.append(Ingredient(INGREDIENT_TYPE_FILLING, "sausage", 300))
+
+    def available_buns(self) -> List[Bun]:
+        return self.buns
+
+    def available_ingredients(self) -> List[Ingredient]:
+        return self.ingredients
diff --git a/praktikum/ingredient.py b/praktikum/ingredient.py
new file mode 100644
index 000000000..0e50db8a2
--- /dev/null
+++ b/praktikum/ingredient.py
@@ -0,0 +1,20 @@
+class Ingredient:
+    """
+    Модель ингредиента.
+    Ингредиент: начинка или соус.
+    У ингредиента есть тип (начинка или соус), название и цена.
+    """
+
+    def __init__(self, ingredient_type: str, name: str, price: float):
+        self.type = ingredient_type
+        self.name = name
+        self.price = price
+
+    def get_price(self) -> float:
+        return self.price
+
+    def get_name(self) -> str:
+        return self.name
+
+    def get_type(self) -> str:
+        return self.type
diff --git a/praktikum/ingredient_types.py b/praktikum/ingredient_types.py
new file mode 100644
index 000000000..34940ad5d
--- /dev/null
+++ b/praktikum/ingredient_types.py
@@ -0,0 +1,7 @@
+"""
+Перечисление с типами ингредиентов.
+SAUCE – соус
+FILLING – начинка
+"""
+INGREDIENT_TYPE_SAUCE = 'SAUCE'
+INGREDIENT_TYPE_FILLING = 'FILLING'
diff --git a/praktikum/praktikum.py b/praktikum/praktikum.py
new file mode 100644
index 000000000..ec522fa6d
--- /dev/null
+++ b/praktikum/praktikum.py
@@ -0,0 +1,41 @@
+from typing import List
+
+from praktikum.bun import Bun
+from praktikum.burger import Burger
+from praktikum.database import Database
+from praktikum.ingredient import Ingredient
+
+
+def main():
+    # Инициализируем базу данных
+    database: Database = Database()
+
+    # Создадим новый бургер
+    burger: Burger = Burger()
+
+    # Считаем список доступных булок из базы данных
+    buns: List[Bun] = database.available_buns()
+
+    # Считаем список доступных ингредиентов из базы данных
+    ingredients: List[Ingredient] = database.available_ingredients()
+
+    # Соберём бургер
+    burger.set_buns(buns[0])
+
+    burger.add_ingredient(ingredients[1])
+    burger.add_ingredient(ingredients[4])
+    burger.add_ingredient(ingredients[3])
+    burger.add_ingredient(ingredients[5])
+
+    # Переместим слой с ингредиентом
+    burger.move_ingredient(2, 1)
+
+    # Удалим ингредиент
+    burger.remove_ingredient(3)
+
+    # Распечатаем рецепт бургера
+    print(burger.get_receipt())
+
+
+if __name__ == "__main__":
+    main()
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 000000000..ac4f60912
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+pytest==7.4.3
+pytest-cov==7.0.0
+allure-pytest==2.13.2
\ No newline at end of file
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/burger_test.py b/tests/burger_test.py
new file mode 100644
index 000000000..cebcb8455
--- /dev/null
+++ b/tests/burger_test.py
@@ -0,0 +1,131 @@
+import pytest
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent))
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from helpers import (
+    create_mock_ingredient,
+    create_mock_bun,
+    add_multiple_ingredients_to_burger,
+    calculate_burger_price,
+    create_ingredients_list
+)
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+
+class TestBurger:
+    
+    def test_set_bun_success(self, burger, white_bun):
+        burger.set_buns(white_bun)
+        assert burger.bun == white_bun
+
+    def test_set_bun_replace_existing(self, burger, white_bun, black_bun):
+        burger.set_buns(white_bun)
+        burger.set_buns(black_bun)
+        assert burger.bun == black_bun
+
+    def test_add_ingredient_one(self, burger, sauce_ingredient):
+        burger.add_ingredient(sauce_ingredient)
+        assert len(burger.ingredients) == 1
+
+    def test_add_ingredient_first_element(self, burger, sauce_ingredient):
+        burger.add_ingredient(sauce_ingredient)
+        assert burger.ingredients[0] == sauce_ingredient
+
+    def test_add_ingredient_multiple(self, burger, ingredient_count):
+        ingredients = create_ingredients_list(ingredient_count, INGREDIENT_TYPE_SAUCE, 50.0)
+        burger = add_multiple_ingredients_to_burger(burger, ingredients)
+        assert len(burger.ingredients) == ingredient_count
+
+    def test_add_ingredient_keeps_order_first(self, burger, sauce_ingredient, filling_ingredient):
+        burger.add_ingredient(sauce_ingredient)
+        burger.add_ingredient(filling_ingredient)
+        assert burger.ingredients[0] == sauce_ingredient
+
+    def test_add_ingredient_keeps_order_second(self, burger, sauce_ingredient, filling_ingredient):
+        burger.add_ingredient(sauce_ingredient)
+        burger.add_ingredient(filling_ingredient)
+        assert burger.ingredients[1] == filling_ingredient
+
+    
+    def test_remove_ingredient_decreases_count(self, burger):
+        ing1 = create_mock_ingredient("First", INGREDIENT_TYPE_SAUCE, 50.0)
+        ing2 = create_mock_ingredient("Second", INGREDIENT_TYPE_FILLING, 100.0)
+        burger = add_multiple_ingredients_to_burger(burger, [ing1, ing2])
+        burger.remove_ingredient(0)
+        assert len(burger.ingredients) == 1
+
+    def test_remove_ingredient_first_leaves_second(self, burger):
+        ing1 = create_mock_ingredient("First", INGREDIENT_TYPE_SAUCE, 50.0)
+        ing2 = create_mock_ingredient("Second", INGREDIENT_TYPE_FILLING, 100.0)
+        burger = add_multiple_ingredients_to_burger(burger, [ing1, ing2])
+        burger.remove_ingredient(0)
+        assert burger.ingredients[0] == ing2
+
+    def test_remove_ingredient_middle(self, burger):
+        ing1 = create_mock_ingredient("First", INGREDIENT_TYPE_SAUCE, 50.0)
+        ing2 = create_mock_ingredient("Middle", INGREDIENT_TYPE_FILLING, 100.0)
+        ing3 = create_mock_ingredient("Last", INGREDIENT_TYPE_SAUCE, 75.0)
+        burger = add_multiple_ingredients_to_burger(burger, [ing1, ing2, ing3])
+        burger.remove_ingredient(1)
+        assert burger.ingredients[1] == ing3
+
+    def test_remove_ingredient_at_index(self, burger):
+        ingredients = create_ingredients_list(3, INGREDIENT_TYPE_SAUCE, 50.0)
+        burger = add_multiple_ingredients_to_burger(burger, ingredients)
+        burger.remove_ingredient(0)
+        assert len(burger.ingredients) == 2
+
+    def test_move_ingredient_forward(self, burger):
+        ing1 = create_mock_ingredient("First", INGREDIENT_TYPE_SAUCE, 50.0)
+        ing2 = create_mock_ingredient("Second", INGREDIENT_TYPE_FILLING, 100.0)
+        ing3 = create_mock_ingredient("Third", INGREDIENT_TYPE_SAUCE, 75.0)
+        burger = add_multiple_ingredients_to_burger(burger, [ing1, ing2, ing3])
+        burger.move_ingredient(0, 2)
+        assert burger.ingredients[2] == ing1
+
+    def test_move_ingredient_changes_first_position(self, burger):
+        ing1 = create_mock_ingredient("First", INGREDIENT_TYPE_SAUCE, 50.0)
+        ing2 = create_mock_ingredient("Second", INGREDIENT_TYPE_FILLING, 100.0)
+        ing3 = create_mock_ingredient("Third", INGREDIENT_TYPE_SAUCE, 75.0)
+        burger = add_multiple_ingredients_to_burger(burger, [ing1, ing2, ing3])
+        burger.move_ingredient(0, 2)
+        assert burger.ingredients[0] == ing2
+
+    def test_move_ingredient_backward(self, burger):
+        ing1 = create_mock_ingredient("First", INGREDIENT_TYPE_SAUCE, 50.0)
+        ing2 = create_mock_ingredient("Second", INGREDIENT_TYPE_FILLING, 100.0)
+        ing3 = create_mock_ingredient("Third", INGREDIENT_TYPE_SAUCE, 75.0)
+        burger = add_multiple_ingredients_to_burger(burger, [ing1, ing2, ing3])
+        burger.move_ingredient(2, 0)
+        assert burger.ingredients[0] == ing3
+
+    def test_move_ingredient_preserves_count(self, burger):
+       
+        ingredients = create_ingredients_list(3, INGREDIENT_TYPE_SAUCE, 50.0)
+        burger = add_multiple_ingredients_to_burger(burger, ingredients)
+        burger.move_ingredient(0, 2)
+        assert len(burger.ingredients) == 3
+
+    
+    @pytest.mark.parametrize("bun_price,ingredient_prices,expected_price", [
+        (100.0, [50.0], 250.0),
+        (150.0, [50.0, 75.0], 425.0),
+        (200.0, [100.0, 100.0, 100.0], 700.0),
+    ])
+    def test_price_calculation(self, burger, bun_price, ingredient_prices, expected_price):
+        calculated_price = calculate_burger_price(bun_price, ingredient_prices)
+        assert calculated_price == expected_price
+
+    
+    @pytest.mark.parametrize("from_pos,to_pos", [
+        (0, 1), (1, 0), (0, 2), (2, 0)
+    ])
+    def test_move_ingredient_parametrized(self, burger, from_pos, to_pos):
+        ingredients = create_ingredients_list(3, INGREDIENT_TYPE_SAUCE, 50.0)
+        burger = add_multiple_ingredients_to_burger(burger, ingredients)
+        original_ingredient = burger.ingredients[from_pos]
+        burger.move_ingredient(from_pos, to_pos)
+        assert burger.ingredients[to_pos] == original_ingredient
\ No newline at end of file
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 000000000..1ad8b411f
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,34 @@
+import pytest
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent))
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from helpers import create_mock_ingredient, create_mock_bun
+from praktikum.burger import Burger
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+@pytest.fixture
+def burger():
+    return Burger()
+
+@pytest.fixture
+def white_bun():
+    return create_mock_bun("White Bun", 100.0)
+
+@pytest.fixture
+def black_bun():
+    return create_mock_bun("Black Bun", 150.0)
+
+@pytest.fixture
+def sauce_ingredient():
+    return create_mock_ingredient("spicy sauce", INGREDIENT_TYPE_SAUCE, 90.0)
+
+@pytest.fixture
+def filling_ingredient():
+    return create_mock_ingredient("Cutlet", INGREDIENT_TYPE_FILLING, 100.0)
+
+@pytest.fixture(params=[1, 3, 5, 10])
+def ingredient_count(request):
+    return request.param
diff --git a/tests/helpers.py b/tests/helpers.py
new file mode 100644
index 000000000..080cdf514
--- /dev/null
+++ b/tests/helpers.py
@@ -0,0 +1,52 @@
+from unittest.mock import Mock
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+
+def create_mock_ingredient(name: str, ingredient_type: str, price: float) -> Mock:
+    ingredient = Mock()
+    ingredient.get_name = Mock(return_value=name)
+    ingredient.get_type = Mock(return_value=ingredient_type)
+    ingredient.get_price = Mock(return_value=price)
+    return ingredient
+
+
+def create_mock_bun(name: str, price: float) -> Mock:
+    bun = Mock()
+    bun.get_name = Mock(return_value=name)
+    bun.get_price = Mock(return_value=price)
+    return bun
+
+
+def setup_burger_with_bun_and_ingredients(burger, bun, *ingredients):
+    burger.set_buns(bun)
+    for ingredient in ingredients:
+        burger.add_ingredient(ingredient)
+    return burger
+
+
+def add_multiple_ingredients_to_burger(burger, ingredient_list):
+    for ingredient in ingredient_list:
+        burger.add_ingredient(ingredient)
+    return burger
+
+
+def calculate_burger_price(bun_price: float, ingredient_prices: list) -> float:
+    return (bun_price * 2) + sum(ingredient_prices)
+
+
+def extract_price_from_receipt(receipt: str) -> float:
+    price_line = [line for line in receipt.split('\n') if line.startswith('Price:')]
+    if price_line:
+        return float(price_line[0].replace('Price: ', ''))
+    return 0.0
+
+
+def verify_ingredients_in_receipt(receipt: str, ingredient_names: list) -> bool:
+    return all(name in receipt for name in ingredient_names)
+
+
+def create_ingredients_list(count: int, ingredient_type: str, price: float) -> list:
+    return [
+        create_mock_ingredient(f"Ingredient_{i}", ingredient_type, price)
+        for i in range(count)
+    ]