diff --git a/.coverage b/.coverage
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Binary files /dev/null and b/.coverage differ
diff --git a/__init__.py b/praktikum/__init__.py
similarity index 100%
rename from __init__.py
rename to praktikum/__init__.py
diff --git a/bun.py b/praktikum/bun.py
similarity index 100%
rename from bun.py
rename to praktikum/bun.py
diff --git a/burger.py b/praktikum/burger.py
similarity index 100%
rename from burger.py
rename to praktikum/burger.py
diff --git a/database.py b/praktikum/database.py
similarity index 100%
rename from database.py
rename to praktikum/database.py
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
similarity index 100%
rename from ingredient_types.py
rename to praktikum/ingredient_types.py
diff --git a/praktikum.py b/praktikum/praktikum.py
similarity index 100%
rename from praktikum.py
rename to praktikum/praktikum.py
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/test_bun.py b/tests/test_bun.py
new file mode 100644
index 000000000..d005f42b4
--- /dev/null
+++ b/tests/test_bun.py
@@ -0,0 +1,40 @@
+import pytest
+from praktikum.bun import Bun
+
+class TestBun:
+    """Тесты для класса Bun"""
+
+    @pytest.mark.parametrize("name,price,expected_name,expected_price", [
+        ("black bun", 100, "black bun", 100),
+        ("white bun", 200.5, "white bun", 200.5),
+        ("red bun", 0, "red bun", 0),
+        ("", 50, "", 50),
+    ])
+    def test_bun_init(self, name, price, expected_name, expected_price):
+        """Тест инициализации булочки"""
+        bun = Bun(name, price)
+        assert bun.name == expected_name
+        assert bun.price == expected_price
+
+    @pytest.mark.parametrize("name,price", [
+        ("black bun", 100),
+        ("white bun", 200),
+        ("test bun", 150.75),
+    ])
+    def test_get_name(self, name, price):
+        """Тест получения названия булочки"""
+        bun = Bun(name, price)
+        result = bun.get_name()
+        assert result == name
+
+    @pytest.mark.parametrize("name,price", [
+        ("black bun", 100),
+        ("white bun", 200.5),
+        ("red bun", 0),
+        ("test", 999.99),
+    ])
+    def test_get_price(self, name, price):
+        """Тест получения цены булочки"""
+        bun = Bun(name, price)
+        result = bun.get_price()
+        assert result == 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..b72067419
--- /dev/null
+++ b/tests/test_burger.py
@@ -0,0 +1,127 @@
+import pytest
+from unittest.mock import Mock, MagicMock
+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:
+    """Тесты для класса Burger"""
+
+    def test_burger_init(self):
+        """Тест инициализации бургера"""
+        burger = Burger()
+        assert burger.bun is None
+        assert burger.ingredients == []
+
+    def test_set_buns(self):
+        """Тест установки булочки"""
+        burger = Burger()
+        mock_bun = Mock(spec=Bun)
+        mock_bun.name = "test bun"
+        mock_bun.price = 100
+        
+        burger.set_buns(mock_bun)
+        
+        assert burger.bun == mock_bun
+        assert burger.bun.name == "test bun"
+
+
+    def test_add_ingredient(self):
+        """Тест добавления ингредиента"""
+        burger = Burger()
+        mock_ingredient = Mock(spec=Ingredient)
+        mock_ingredient.name = "test ingredient"
+        
+        burger.add_ingredient(mock_ingredient)
+        
+        assert len(burger.ingredients) == 1
+        assert burger.ingredients[0] == mock_ingredient
+
+    @pytest.mark.parametrize("ingredient_name,ingredient_price,ingredient_type", [
+        ("hot sauce", 100, INGREDIENT_TYPE_SAUCE),
+        ("cutlet", 200, INGREDIENT_TYPE_FILLING),
+        ("sour cream", 150, INGREDIENT_TYPE_SAUCE),
+    ])
+    def test_add_ingredient_multiple(self, ingredient_name, ingredient_price, ingredient_type):
+        """Тест добавления нескольких ингредиентов"""
+        burger = Burger()
+        ingredient = Ingredient(ingredient_type, ingredient_name, ingredient_price)
+        
+        burger.add_ingredient(ingredient)
+        
+        assert len(burger.ingredients) == 1
+        assert burger.ingredients[0].get_name() == ingredient_name
+        assert burger.ingredients[0].get_price() == ingredient_price
+
+    def test_remove_ingredient(self):
+        """Тест удаления ингредиента"""
+        burger = Burger()
+        ingredient1 = Mock(spec=Ingredient)
+        ingredient2 = Mock(spec=Ingredient)
+        ingredient3 = Mock(spec=Ingredient)
+        
+        burger.ingredients = [ingredient1, ingredient2, ingredient3]
+        
+        burger.remove_ingredient(1)
+        
+        assert len(burger.ingredients) == 2
+        assert ingredient1 in burger.ingredients
+        assert ingredient2 not in burger.ingredients
+        assert ingredient3 in burger.ingredients
+
+ 
+    def test_move_ingredient(self):
+        """Тест перемещения ингредиента"""
+        burger = Burger()
+        ingredient1 = Mock(spec=Ingredient)
+        ingredient2 = Mock(spec=Ingredient)
+        ingredient3 = Mock(spec=Ingredient)
+        
+        burger.ingredients = [ingredient1, ingredient2, ingredient3]
+        
+        burger.move_ingredient(2, 0)
+        
+        assert burger.ingredients == [ingredient3, ingredient1, ingredient2]
+
+
+    def test_get_price_with_bun_no_ingredients(self):
+        """Тест получения цены  с булочкой"""
+        burger = Burger()
+        mock_bun = Mock(spec=Bun)
+        mock_bun.get_price.return_value = 100
+        
+        burger.set_buns(mock_bun)
+        
+        price = burger.get_price()
+        
+        assert price == 200  # 2 булочки по 100
+
+   
+    def test_get_receipt(self):
+        """Тест получения чека"""
+        burger = Burger()
+        mock_bun = Mock(spec=Bun)
+        mock_bun.get_name.return_value = "black bun"
+        mock_bun.get_price.return_value = 100
+        burger.set_buns(mock_bun)
+        
+        mock_ingredient1 = Mock(spec=Ingredient)
+        mock_ingredient1.get_type.return_value = INGREDIENT_TYPE_SAUCE
+        mock_ingredient1.get_name.return_value = "hot sauce"
+        mock_ingredient1.get_price.return_value = 50
+        
+        mock_ingredient2 = Mock(spec=Ingredient)
+        mock_ingredient2.get_type.return_value = INGREDIENT_TYPE_FILLING
+        mock_ingredient2.get_name.return_value = "cutlet"
+        mock_ingredient2.get_price.return_value = 150
+
+        burger.add_ingredient(mock_ingredient1)
+        burger.add_ingredient(mock_ingredient2)
+        
+        receipt = burger.get_receipt()
+        
+        assert "(==== black bun ====)" in receipt
+        assert "= sauce hot sauce =" in receipt
+        assert "= filling cutlet =" in receipt
+        assert "Price: 400" in receipt
diff --git a/tests/test_database.py b/tests/test_database.py
new file mode 100644
index 000000000..6734e40b4
--- /dev/null
+++ b/tests/test_database.py
@@ -0,0 +1,52 @@
+import pytest
+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:
+    """Тесты для класса Database"""
+
+    def test_initialization_database(self):
+        """Тест инициализации"""
+        database = Database()
+        
+        assert len(database.buns) == 3
+        assert len(database.ingredients) == 6
+
+
+    def test_available_buns_content(self):
+        """Тест содержания доступных булок"""
+        database = Database()
+        buns = database.available_buns()
+        
+        bun_names = [bun.get_name() for bun in buns]
+        bun_prices = [bun.get_price() for bun in buns]
+        
+        assert "black bun" in bun_names
+        assert "white bun" in bun_names
+        assert "red bun" in bun_names
+        assert 100 in bun_prices
+        assert 200 in bun_prices
+        assert 300 in bun_prices
+
+    def test_available_ingredients(self):
+        """Тест получения доступных ингредиентов"""
+        database = Database()
+        ingredients = database.available_ingredients()
+        
+        assert len(ingredients) == 6
+
+    def test_available_ingredients_content(self):
+        """Тест содержания доступных ингредиентов"""
+        database = Database()
+        ingredients = database.available_ingredients()
+        
+        ing_names = [ing.get_name() for ing in ingredients]
+        
+        assert "hot sauce" in ing_names
+        assert "sour cream" in ing_names
+        assert "chili sauce" in ing_names
+        assert "cutlet" in ing_names
+        assert "dinosaur" in ing_names
+        assert "sausage" in ing_names
\ No newline at end of file
diff --git a/tests/test_ingridient.py b/tests/test_ingridient.py
new file mode 100644
index 000000000..9320cd9a9
--- /dev/null
+++ b/tests/test_ingridient.py
@@ -0,0 +1,52 @@
+import pytest
+from praktikum.ingredient import Ingredient
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+class TestIngredient:
+    """Тесты для класса Ingredient"""
+
+    @pytest.mark.parametrize("ingredient_type, name, price", [
+        (INGREDIENT_TYPE_SAUCE, "hot sauce", 100),
+        (INGREDIENT_TYPE_FILLING, "cutlet", 200),
+        (INGREDIENT_TYPE_SAUCE, "sour cream", 150.5),
+        (INGREDIENT_TYPE_FILLING, "dinosaur", 0),
+    ])
+    def test_ingredient_init(self, ingredient_type, name, price):
+        """Тест инициализации ингредиента"""
+        ingredient = Ingredient(ingredient_type, name, price)
+        assert ingredient.type == ingredient_type
+        assert ingredient.name == name
+        assert ingredient.price == price
+
+    @pytest.mark.parametrize("ingredient_type, name, price,expected", [
+        (INGREDIENT_TYPE_SAUCE, "hot sauce", 100, "hot sauce"),
+        (INGREDIENT_TYPE_FILLING, "cutlet", 200, "cutlet"),
+        (INGREDIENT_TYPE_SAUCE, "chili sauce", 300, "chili sauce"),
+    ])
+    def test_get_name(self, ingredient_type, name, price, expected):
+        """Тест получения названия ингредиента"""
+        ingredient = Ingredient(ingredient_type, name, price)
+        result = ingredient.get_name()
+        assert result == expected
+
+    @pytest.mark.parametrize("ingredient_type, name, price, expected", [
+        (INGREDIENT_TYPE_SAUCE, "hot sauce", 100, 100),
+        (INGREDIENT_TYPE_FILLING, "cutlet", 200.5, 200.5),
+        (INGREDIENT_TYPE_SAUCE, "sour cream", 0, 0),
+    ])
+    def test_get_price(self, ingredient_type, name, price, expected):
+        """Тест получения цены ингредиента"""
+        ingredient = Ingredient(ingredient_type, name, price)
+        result = ingredient.get_price()
+        assert result == expected
+
+    @pytest.mark.parametrize("ingredient_type, name, price,expected", [
+        (INGREDIENT_TYPE_SAUCE, "hot sauce", 100, INGREDIENT_TYPE_SAUCE),
+        (INGREDIENT_TYPE_FILLING, "cutlet", 200, INGREDIENT_TYPE_FILLING),
+    ])
+    def test_get_type(self, ingredient_type, name, price, expected):
+        """Тест получения типа ингредиента"""
+        ingredient = Ingredient(ingredient_type, name, price)
+        result = ingredient.get_type()
+        assert result == expected
+        assert result in [INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING]
\ No newline at end of file