diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..b614a72b0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,12 @@
+# Виртуальное окружение
+venv/
+.venv/
+
+# Кеш Python
+__pycache__/
+.pytest_cache/
+*.pyc
+
+# Отчёты покрытия
+.coverage
+htmlcov/
\ No newline at end of file
diff --git a/conftest.py b/conftest.py
new file mode 100644
index 000000000..eee6d3be0
--- /dev/null
+++ b/conftest.py
@@ -0,0 +1,34 @@
+import pytest
+import data as D
+from praktikum.bun import Bun
+from praktikum.burger import Burger
+from praktikum.ingredient import Ingredient
+
+
+@pytest.fixture
+def bun():
+    bun = Bun(D.BURGER_BUN_NAME, D.BURGER_BUN_PRICE)
+    return bun
+
+@pytest.fixture
+def filling():
+    ingredient = Ingredient(
+        D.INGREDIENT_TYPE_FILLING,
+        D.INGREDIENT_FILLING_NAME,
+        D.INGREDIENT_FILLING_1_PRICE
+    )
+    return ingredient
+
+@pytest.fixture
+def sauce():
+    ingredient = Ingredient(
+        D.INGREDIENT_TYPE_SAUCE,
+        D.INGREDIENT_SAUCE_NAME,
+        D.INGREDIENT_SAUCE_PRICE
+    )
+    return ingredient
+
+@pytest.fixture
+def burger():
+    return Burger()
+
diff --git a/coverage_report.txt b/coverage_report.txt
new file mode 100644
index 000000000..4b05ac871
Binary files /dev/null and b/coverage_report.txt differ
diff --git a/data.py b/data.py
new file mode 100644
index 000000000..949182cf8
--- /dev/null
+++ b/data.py
@@ -0,0 +1,26 @@
+BUN_PARAMS = [
+    ('Black bun', 100),
+    ('White bun', 80.5),
+    ('',0),
+    ('Test', -20)
+]
+
+INGREDIENT_PARAMS = [
+    ("SAUCE", "Hot sauce", 50),
+    ("FILLING", "Cutlet", 100),
+    ("SAUCE", "Sour cream", 200),
+    ("", "Empty type", 0),
+    ("FILLING", "", 50),
+]
+
+BURGER_BUN_NAME = 'Black Bun'
+BURGER_BUN_PRICE = 100
+INGREDIENT_TYPE_SAUCE = 'SAUCE'
+INGREDIENT_TYPE_FILLING = 'FILLING'
+INGREDIENT_FILLING_NAME = 'Cutlet'
+INGREDIENT_SAUCE_NAME = 'Hot sauce'
+INGREDIENT_FILLING_1_PRICE = 50
+INGREDIENT_FILLING_2_PRICE = 30
+INGREDIENT_SAUCE_PRICE = 25
+BURGER_EXPECTED_TOTAL = 280
+EXPECTED_RECEIPT = '(==== Black Bun ====)\n= filling Cutlet =\n(==== Black Bun ====)\n\nPrice: 250'
\ 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..a3673a792
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..7a02b7341
--- /dev/null
+++ b/tests/test_bun.py
@@ -0,0 +1,19 @@
+import pytest
+import data as D
+from praktikum.bun import Bun
+
+
+
+class TestBun:
+
+    @pytest.mark.parametrize('name, price', D.BUN_PARAMS)
+    def test_bun_creation(self, name, price):
+        bun = Bun(name, price)
+        assert bun.name == name
+        assert bun.price == price
+
+    def test_get_name(self, bun):
+        assert bun.get_name() == D.BURGER_BUN_NAME
+
+    def test_get_price(self, bun):
+        assert bun.get_price() == D.BURGER_BUN_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..af8a2456e
--- /dev/null
+++ b/tests/test_burger.py
@@ -0,0 +1,61 @@
+import pytest
+import data as D
+from unittest.mock import Mock
+
+
+class TestBurger:
+
+    def test_set_buns(self, burger):
+        mock_bun = Mock()
+        mock_bun.get_price.return_value = D.BURGER_BUN_PRICE
+        burger.set_buns(mock_bun)
+        assert burger.bun is mock_bun
+
+    def test_add_ingredient(self, burger):
+        mock_ingredient = Mock()
+        mock_ingredient.get_price.return_value = D.INGREDIENT_FILLING_1_PRICE
+        burger.add_ingredient(mock_ingredient)
+        assert mock_ingredient in burger.ingredients
+
+    def test_get_price(self, burger):
+        mock_bun = Mock()
+        mock_bun.get_price.return_value = D.BURGER_BUN_PRICE
+        mock_ingr1 = Mock()
+        mock_ingr2 = Mock()
+        mock_ingr1.get_price.return_value = D.INGREDIENT_FILLING_1_PRICE
+        mock_ingr2.get_price.return_value = D.INGREDIENT_FILLING_2_PRICE
+        burger.set_buns(mock_bun)
+        burger.add_ingredient(mock_ingr1)
+        burger.add_ingredient(mock_ingr2)
+        assert burger.get_price() == D.BURGER_EXPECTED_TOTAL
+
+    def test_remove_ingredient(self, burger):
+        mock_ingr1 = Mock()
+        mock_ingr2 = Mock()
+        mock_ingr1.get_price.return_value = D.INGREDIENT_FILLING_1_PRICE
+        mock_ingr2.get_price.return_value = D.INGREDIENT_FILLING_2_PRICE
+        burger.add_ingredient(mock_ingr1)
+        burger.add_ingredient(mock_ingr2)
+        burger.remove_ingredient(0)
+        assert len(burger.ingredients) == 1
+        assert mock_ingr1 not in burger.ingredients
+
+    def test_move_ingredient(self, burger):
+        mock_first = Mock()
+        mock_second = Mock()
+        burger.add_ingredient(mock_first)
+        burger.add_ingredient(mock_second)
+        burger.move_ingredient(0, 1)
+        assert burger.ingredients == [mock_second, mock_first]
+
+    def test_get_receipt(self, burger):
+        mock_bun = Mock()
+        mock_ingr = Mock()
+        mock_bun.get_name.return_value = D.BURGER_BUN_NAME
+        mock_bun.get_price.return_value = D.BURGER_BUN_PRICE
+        burger.set_buns(mock_bun)
+        mock_ingr.get_type.return_value = D.INGREDIENT_TYPE_FILLING
+        mock_ingr.get_name.return_value = D.INGREDIENT_FILLING_NAME
+        mock_ingr.get_price.return_value = D.INGREDIENT_FILLING_1_PRICE
+        burger.add_ingredient(mock_ingr)
+        assert burger.get_receipt() == D.EXPECTED_RECEIPT
diff --git a/tests/test_database.py b/tests/test_database.py
new file mode 100644
index 000000000..552858a6f
--- /dev/null
+++ b/tests/test_database.py
@@ -0,0 +1,17 @@
+import pytest
+from praktikum.database import Database
+from praktikum.ingredient import Ingredient
+
+
+class TestDatabase:
+    def test_available_buns(self):
+        db = Database()
+        buns = db.available_buns()
+        assert len(buns) == 3
+        assert isinstance(buns, list)
+
+    def test_available_ingredients(self):
+        db = Database()
+        ingredients = db.available_ingredients()
+        assert len(ingredients) == 6
+        assert isinstance(ingredients, list)
\ No newline at end of file
diff --git a/tests/test_ingredient.py b/tests/test_ingredient.py
new file mode 100644
index 000000000..99925d16f
--- /dev/null
+++ b/tests/test_ingredient.py
@@ -0,0 +1,22 @@
+import pytest
+import data as D
+from praktikum.ingredient import Ingredient
+
+
+class TestIngredient:
+
+    @pytest.mark.parametrize('ingredient_type, name, price', D.INGREDIENT_PARAMS)
+    def test_creation(self, ingredient_type, name, price):
+        ingredient = Ingredient(ingredient_type, name, price)
+        assert ingredient.type == ingredient_type
+        assert ingredient.name == name 
+        assert ingredient.price == price
+
+    def test_get_ingredient_type(self, filling):
+        assert filling.get_type() == D.INGREDIENT_TYPE_FILLING
+
+    def test_get_ingredient_name(self, filling):
+        assert filling.get_name() == D.INGREDIENT_FILLING_NAME
+
+    def test_get_ingredient_price(self, filling):
+        assert filling.get_price() == D.INGREDIENT_FILLING_1_PRICE
\ No newline at end of file