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diff --git a/burger.py b/praktikum/burger.py
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rename to praktikum/burger.py
diff --git a/database.py b/praktikum/database.py
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diff --git a/ingredient.py b/praktikum/ingredient.py
similarity index 100%
rename from ingredient.py
rename to praktikum/ingredient.py
diff --git a/ingredient_types.py b/praktikum/ingredient_types.py
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diff --git a/praktikum.py b/praktikum/praktikum.py
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diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 000000000..0983bfd90
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,35 @@
+allure-pytest==2.15.3
+allure-python-commons==2.15.3
+attrs==25.4.0
+certifi==2025.11.12
+charset-normalizer==3.4.4
+coverage==7.10.7
+execnet==2.1.2
+h11==0.16.0
+idna==3.11
+iniconfig==2.1.0
+Jinja2==3.1.6
+MarkupSafe==3.0.3
+outcome==1.3.0.post0
+packaging==25.0
+pluggy==1.6.0
+Pygments==2.19.2
+PySocks==1.7.1
+pytest==8.4.1
+pytest-cov==7.0.0
+pytest-html==4.1.1
+pytest-metadata==3.1.1
+pytest-xdist==3.8.0
+python-dotenv==1.2.1
+python-mock==0.0.3
+requests==2.32.5
+selenium==4.39.0
+sniffio==1.3.1
+sortedcontainers==2.4.0
+trio==0.32.0
+trio-websocket==0.12.2
+typing_extensions==4.15.0
+urllib3==2.6.1
+webdriver-manager==4.0.2
+websocket-client==1.9.0
+wsproto==1.3.2
diff --git a/tests/__init__.py b/tests/__init__.py
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diff --git a/tests/test_bun.py b/tests/test_bun.py
new file mode 100644
index 000000000..d2d4569ac
--- /dev/null
+++ b/tests/test_bun.py
@@ -0,0 +1,43 @@
+import pytest
+from praktikum.bun import Bun
+
+class TestBun:
+    
+    @pytest.mark.parametrize("name, price", [
+        ("black bun", 100),
+        ("white bun", 200),
+        ("red bun", 300),
+        ("", 0),
+        ("Very long bun name with many characters", 999.99)
+    ])
+    def test_bun_initialization(self, name, price):
+        #Проверка инициализации булочки с разными параметрами
+        bun = Bun(name, price)
+        assert bun.get_name() == name
+        assert bun.get_price() == price
+    
+    def test_bun_name_getter(self):
+        #Проверка получения имени булочки
+        bun = Bun("test bun", 150)
+        assert bun.get_name() == "test bun"
+    
+    def test_bun_price_getter(self):
+        #Проверка получения цены булочки
+        bun = Bun("test bun", 150)
+        assert bun.get_price() == 150
+    
+    @pytest.mark.parametrize("name, price", [
+        (None, 100),
+        (123, 100),
+        ("bun", None),
+        ("bun", "100"),
+        (None, None),
+        (123, "456")
+        ])
+    def test_bun_accepts_any_types(self, name, price):
+        #Проверка, что класс принимает любые типы данных
+        bun = Bun(name, price)
+    
+        assert bun is not None
+        assert bun.get_name() == name
+        assert bun.get_price() == price
\ No newline at end of file
diff --git a/tests/test_burger.py b/tests/test_burger.py
new file mode 100644
index 000000000..c54e85dd4
--- /dev/null
+++ b/tests/test_burger.py
@@ -0,0 +1,112 @@
+import pytest
+from unittest.mock import Mock, patch
+from praktikum.burger import Burger
+from praktikum.burger import Burger
+from praktikum.bun import Bun
+from praktikum.ingredient import Ingredient
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+class TestBurger:
+    
+    def setup_method(self):
+        #Подготовка данных перед каждым тестом
+        self.burger = Burger()
+        self.mock_bun = Mock(spec=Bun)
+        self.mock_bun.get_name.return_value = "mock bun"
+        self.mock_bun.get_price.return_value = 100
+        
+        self.mock_sauce = Mock(spec=Ingredient)
+        self.mock_sauce.get_type.return_value = INGREDIENT_TYPE_SAUCE
+        self.mock_sauce.get_name.return_value = "mock sauce"
+        self.mock_sauce.get_price.return_value = 50
+        
+        self.mock_filling = Mock(spec=Ingredient)
+        self.mock_filling.get_type.return_value = INGREDIENT_TYPE_FILLING
+        self.mock_filling.get_name.return_value = "mock filling"
+        self.mock_filling.get_price.return_value = 75
+    
+    def test_burger_initialization(self):
+        #Проверка инициализации пустого бургера
+        assert self.burger.bun is None
+        assert len(self.burger.ingredients) == 0
+    
+    def test_set_buns(self):
+        #Проверка установки булочек
+        self.burger.set_buns(self.mock_bun)
+        assert self.burger.bun == self.mock_bun
+    
+    def test_add_ingredient(self):
+        #Проверка добавления ингредиента
+        self.burger.add_ingredient(self.mock_sauce)
+        assert len(self.burger.ingredients) == 1
+        assert self.burger.ingredients[0] == self.mock_sauce
+    
+    def test_remove_ingredient(self):
+        #Проверка удаления ингредиента
+        self.burger.add_ingredient(self.mock_sauce)
+        self.burger.add_ingredient(self.mock_filling)
+        self.burger.remove_ingredient(0)
+        
+        assert len(self.burger.ingredients) == 1
+        assert self.burger.ingredients[0] == self.mock_filling
+    
+    def test_move_ingredient(self):
+        #Проверка перемещения ингредиента
+        self.burger.add_ingredient(self.mock_sauce)
+        self.burger.add_ingredient(self.mock_filling)
+        self.burger.move_ingredient(1, 0)
+        
+        assert self.burger.ingredients[0] == self.mock_filling
+        assert self.burger.ingredients[1] == self.mock_sauce
+
+    def test_get_price_with_bun_only(self):
+        #Проверка расчета цены только с булочкой
+        self.burger.set_buns(self.mock_bun)
+        expected_price = self.mock_bun.get_price() * 2
+        
+        assert self.burger.get_price() == expected_price
+
+    def test_get_price_with_ingredients(self):
+        #Проверка расчета цены с ингредиентами
+        self.burger.set_buns(self.mock_bun)
+        self.burger.add_ingredient(self.mock_sauce)
+        self.burger.add_ingredient(self.mock_filling)
+        
+        expected_price = (self.mock_bun.get_price() * 2 + 
+                         self.mock_sauce.get_price() + 
+                         self.mock_filling.get_price())
+        
+        assert self.burger.get_price() == expected_price
+    
+    def test_get_receipt_with_bun_only(self):
+        #Проверка формирования чека только с булочкой
+        self.burger.set_buns(self.mock_bun)
+    
+        receipt = self.burger.get_receipt()
+        expected_lines = [
+            f"(==== {self.mock_bun.get_name()} ====)",
+            f"(==== {self.mock_bun.get_name()} ====)",
+            "",
+            f"Price: {self.burger.get_price()}"
+        ]
+    
+        assert receipt == "\n".join(expected_lines)
+    
+    def test_get_receipt_with_ingredients(self):
+        #Проверка формирования чека с ингредиентами
+        self.burger.set_buns(self.mock_bun)
+        self.burger.add_ingredient(self.mock_sauce)
+        self.burger.add_ingredient(self.mock_filling)
+    
+        receipt = self.burger.get_receipt()
+    
+        receipt_lines = [line for line in receipt.split('\n') if line != ""]
+        expected_order = [
+            f"(==== {self.mock_bun.get_name()} ====)",
+            f"= sauce {self.mock_sauce.get_name()} =",
+            f"= filling {self.mock_filling.get_name()} =",
+            f"(==== {self.mock_bun.get_name()} ====)",
+            f"Price: {self.burger.get_price()}"
+        ]
+        assert receipt_lines == expected_order
+    
\ No newline at end of file
diff --git a/tests/test_database.py b/tests/test_database.py
new file mode 100644
index 000000000..35ed02b16
--- /dev/null
+++ b/tests/test_database.py
@@ -0,0 +1,80 @@
+import pytest
+from unittest.mock import Mock, patch, MagicMock
+from praktikum.database import Database
+from praktikum.bun import Bun
+from praktikum.ingredient import Ingredient
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+class TestDatabase:
+    
+    def setup_method(self):
+        #Подготовка данных перед каждым тестом
+        self.db = Database()
+    
+    def test_database_initialization(self):
+        #Проверка инициализации базы данных
+        assert hasattr(self.db, 'buns')
+        assert hasattr(self.db, 'ingredients')
+        assert len(self.db.buns) > 0
+        assert len(self.db.ingredients) > 0
+    
+    def test_available_buns(self):
+        #Проверка получения списка булочек
+        buns = self.db.available_buns()
+        assert isinstance(buns, list)
+        assert len(buns) == len(self.db.buns)
+        for bun in buns:
+            assert isinstance(bun, Bun)
+    
+    def test_available_ingredients(self):
+        #Проверка получения списка ингредиентов
+        ingredients = self.db.available_ingredients()
+        assert isinstance(ingredients, list)
+        assert len(ingredients) == len(self.db.ingredients)
+        for ingredient in ingredients:
+            assert isinstance(ingredient, Ingredient)
+    
+    def test_available_ingredients_invalid_type(self):
+        #Проверка получения всех ингредиентов (метод не фильтрует по типу)
+        ingredients = self.db.available_ingredients()
+    
+        # Проверяем, что возвращаются все ингредиенты
+        assert isinstance(ingredients, list)
+        assert len(ingredients) == len(self.db.ingredients)
+    
+        # Проверяем, что среди ингредиентов есть и соусы, и начинки
+        has_sauce = False
+        has_filling = False
+    
+        for ingredient in ingredients:
+            if ingredient.get_type() == INGREDIENT_TYPE_SAUCE:
+                has_sauce = True
+            elif ingredient.get_type() == INGREDIENT_TYPE_FILLING:
+                has_filling = True
+    
+        assert has_sauce and has_filling
+    
+    @patch('praktikum.database.Database.available_buns')
+    def test_database_methods_callable(self, mock_available_buns):
+        #Проверка, что методы базы данных вызываются корректно
+        mock_available_buns.return_value = ["mock_bun1", "mock_bun2"]
+        
+        result = self.db.available_buns()
+        
+        mock_available_buns.assert_called_once()
+        assert result == ["mock_bun1", "mock_bun2"]
+    
+    def test_database_data_integrity(self):
+        #Проверка целостности данных в базе
+        # Проверяем булочки
+        for bun in self.db.buns:
+            assert isinstance(bun.get_name(), str)
+            assert isinstance(bun.get_price(), (int, float))
+            assert bun.get_price() > 0
+        
+        # Проверяем ингредиенты
+        for ingredient in self.db.ingredients:
+            assert ingredient.get_type() in [INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING]
+            assert isinstance(ingredient.get_name(), str)
+            assert isinstance(ingredient.get_price(), (int, float))
+            assert ingredient.get_price() > 0
\ No newline at end of file
diff --git a/tests/test_ingredient.py b/tests/test_ingredient.py
new file mode 100644
index 000000000..76ff76816
--- /dev/null
+++ b/tests/test_ingredient.py
@@ -0,0 +1,55 @@
+import pytest
+from praktikum.ingredient import Ingredient
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+class TestIngredient:
+    
+    @pytest.mark.parametrize("ingredient_type, name, price", [
+        (INGREDIENT_TYPE_SAUCE, "hot sauce", 100),
+        (INGREDIENT_TYPE_FILLING, "cutlet", 200),
+        (INGREDIENT_TYPE_SAUCE, "", 0),
+        (INGREDIENT_TYPE_FILLING, "Very long ingredient name", 999.99)
+    ])
+    def test_ingredient_initialization(self, ingredient_type, name, price):
+        #Проверка инициализации ингредиента с разными параметрами
+        ingredient = Ingredient(ingredient_type, name, price)
+        assert ingredient.get_type() == ingredient_type
+        assert ingredient.get_name() == name
+        assert ingredient.get_price() == price
+    
+    def test_ingredient_price_getter(self):
+        #Проверка получения цены ингредиента
+        ingredient = Ingredient(INGREDIENT_TYPE_SAUCE, "sauce", 150)
+        assert ingredient.get_price() == 150
+    
+    def test_ingredient_name_getter(self):
+        #Проверка получения названия ингредиента
+        ingredient = Ingredient(INGREDIENT_TYPE_FILLING, "cutlet", 200)
+        assert ingredient.get_name() == "cutlet"
+    
+    def test_ingredient_type_getter(self):
+        #Проверка получения типа ингредиента
+        ingredient = Ingredient(INGREDIENT_TYPE_SAUCE, "sauce", 150)
+        assert ingredient.get_type() == INGREDIENT_TYPE_SAUCE
+    
+    @pytest.mark.parametrize("ingredient_type, name, price", [
+        ("invalid_type", "sauce", 100),
+        (None, "sauce", 100),
+        (INGREDIENT_TYPE_SAUCE, None, 100),
+        (INGREDIENT_TYPE_SAUCE, "sauce", None),
+        (INGREDIENT_TYPE_SAUCE, "sauce", "100"),
+        (123, "sauce", 100),
+        (INGREDIENT_TYPE_SAUCE, 456, 100),
+        (INGREDIENT_TYPE_SAUCE, "sauce", "not a number")
+    ])
+    def test_ingredient_accepts_any_types(self, ingredient_type, name, price):
+        #Проверка, что класс принимает любые типы данных
+        ingredient = Ingredient(ingredient_type, name, price)
+        
+        # Проверяем, что объект создался
+        assert ingredient is not None
+        
+        # Проверяем, что значения сохранились
+        assert ingredient.get_type() == ingredient_type
+        assert ingredient.get_name() == name
+        assert ingredient.get_price() == price
\ No newline at end of file