diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..eb6c72225
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+__pycache__/
+.pytest_cache/
+.coverage
+htmlcov/
+.idea/
+.vscode/
+venv/
+env/
\ No newline at end of file
diff --git a/coverage_report.txt b/coverage_report.txt
new file mode 100644
index 000000000..0207f2faf
Binary files /dev/null and b/coverage_report.txt differ
diff --git a/data/data.py b/data/data.py
new file mode 100644
index 000000000..5b2163077
--- /dev/null
+++ b/data/data.py
@@ -0,0 +1,6 @@
+BUN_NAMES_DATA = ["Краторная булка N-200i", "", "12345!@#", "Long Name " * 10]
+BUN_PRICES_DATA = [1250.50, 0, -100, 999999.99]
+
+INGREDIENT_TYPES_DATA = ["SAUCE", "FILLING", "", "UNKNOWN"]
+INGREDIENT_NAMES_DATA = ["Соус Spicy-X", "", " ", "Динамический ингредиент"]
+INGREDIENT_PRICES_DATA = [90, 0, -50.5, 10.15]
\ No newline at end of file
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/requirements.txt b/requirements.txt
new file mode 100644
index 000000000..571035fb9
Binary files /dev/null and b/requirements.txt differ
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..43923f149
--- /dev/null
+++ b/tests/test_bun.py
@@ -0,0 +1,14 @@
+import pytest
+from praktikum.bun import Bun
+from data.data import BUN_NAMES_DATA, BUN_PRICES_DATA
+
+class TestBun:
+    @pytest.mark.parametrize("name", BUN_NAMES_DATA)
+    def test_get_name_returns_correct_name(self, name):
+        bun = Bun(name, 100)
+        assert bun.get_name() == name
+
+    @pytest.mark.parametrize("price", BUN_PRICES_DATA)
+    def test_get_price_returns_correct_price(self, price):
+        bun = Bun("Булка", price)
+        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..42c603d8c
--- /dev/null
+++ b/tests/test_burger.py
@@ -0,0 +1,71 @@
+from unittest.mock import Mock
+from praktikum.burger import Burger
+
+class TestBurger:
+    def test_set_buns_sets_correct_bun(self):
+        burger = Burger()
+        mock_bun = Mock()
+        
+        burger.set_buns(mock_bun)
+        
+        assert burger.bun == mock_bun
+
+    def test_add_ingredient_adds_ingredient_to_list(self):
+        burger = Burger()
+        mock_ingredient = Mock()
+        
+        burger.add_ingredient(mock_ingredient)
+        
+        assert burger.ingredients == [mock_ingredient]
+
+    def test_remove_ingredient_removes_ingredient_from_list(self):
+        burger = Burger()
+        mock_ingredient = Mock()
+        burger.ingredients.append(mock_ingredient)
+        
+        burger.remove_ingredient(0)
+        
+        assert len(burger.ingredients) == 0
+
+    def test_move_ingredient_changes_ingredient_index(self):
+        burger = Burger()
+        mock_ingredient_1 = Mock()
+        mock_ingredient_2 = Mock()
+        burger.ingredients.extend([mock_ingredient_1, mock_ingredient_2])
+        
+        burger.move_ingredient(0, 1)
+        
+        assert burger.ingredients == [mock_ingredient_2, mock_ingredient_1]
+
+    def test_get_price_calculates_correct_total_price(self):
+        burger = Burger()
+        
+        mock_bun = Mock()
+        mock_bun.get_price.return_value = 100
+        burger.set_buns(mock_bun)
+        
+        mock_ingredient = Mock()
+        mock_ingredient.get_price.return_value = 50
+        burger.add_ingredient(mock_ingredient)
+        
+        assert burger.get_price() == 250
+
+    def test_get_receipt_returns_correct_string(self):
+        burger = Burger()
+        
+        mock_bun = Mock()
+        mock_bun.get_name.return_value = "Белая булка"
+        mock_bun.get_price.return_value = 100
+        burger.set_buns(mock_bun)
+        
+        mock_ingredient = Mock()
+        mock_ingredient.get_type.return_value = "SAUCE"
+        mock_ingredient.get_name.return_value = "Острый соус"
+        mock_ingredient.get_price.return_value = 50
+        burger.add_ingredient(mock_ingredient)
+        
+        receipt = burger.get_receipt()
+        
+        assert "Белая булка" in receipt
+        assert "Острый соус" in receipt
+        assert "250" in receipt
\ No newline at end of file
diff --git a/tests/test_database.py b/tests/test_database.py
new file mode 100644
index 000000000..f55bcabc6
--- /dev/null
+++ b/tests/test_database.py
@@ -0,0 +1,12 @@
+from praktikum.database import Database
+
+class TestDatabase:
+    def test_available_buns_returns_not_empty_list(self):
+        database = Database()
+        buns = database.available_buns()
+        assert len(buns) > 0
+
+    def test_available_ingredients_returns_not_empty_list(self):
+        database = Database()
+        ingredients = database.available_ingredients()
+        assert len(ingredients) > 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..d8dbcb507
--- /dev/null
+++ b/tests/test_ingredient.py
@@ -0,0 +1,19 @@
+import pytest
+from praktikum.ingredient import Ingredient
+from data.data import INGREDIENT_TYPES_DATA, INGREDIENT_NAMES_DATA, INGREDIENT_PRICES_DATA
+
+class TestIngredient:
+    @pytest.mark.parametrize("ing_type", INGREDIENT_TYPES_DATA)
+    def test_get_type_returns_correct_type(self, ing_type):
+        ingredient = Ingredient(ing_type, "Начинка", 100)
+        assert ingredient.get_type() == ing_type
+
+    @pytest.mark.parametrize("name", INGREDIENT_NAMES_DATA)
+    def test_get_name_returns_correct_name(self, name):
+        ingredient = Ingredient("SAUCE", name, 100)
+        assert ingredient.get_name() == name
+
+    @pytest.mark.parametrize("price", INGREDIENT_PRICES_DATA)
+    def test_get_price_returns_correct_price(self, price):
+        ingredient = Ingredient("SAUCE", "Соус", price)
+        assert ingredient.get_price() == price
\ No newline at end of file