diff --git a/.coverage b/.coverage
new file mode 100644
index 000000000..aab5fdb74
Binary files /dev/null and b/.coverage differ
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 000000000..9b388533a
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+    "python.testing.pytestArgs": [
+        "tests"
+    ],
+    "python.testing.unittestEnabled": false,
+    "python.testing.pytestEnabled": true
+}
\ No newline at end of file
diff --git a/__pycache__/__init__.cpython-314.pyc b/__pycache__/__init__.cpython-314.pyc
new file mode 100644
index 000000000..f5e6dede1
Binary files /dev/null and b/__pycache__/__init__.cpython-314.pyc differ
diff --git a/__pycache__/bun.cpython-314.pyc b/__pycache__/bun.cpython-314.pyc
new file mode 100644
index 000000000..45f394070
Binary files /dev/null and b/__pycache__/bun.cpython-314.pyc differ
diff --git a/__pycache__/burger.cpython-314.pyc b/__pycache__/burger.cpython-314.pyc
new file mode 100644
index 000000000..f3ae170cc
Binary files /dev/null and b/__pycache__/burger.cpython-314.pyc differ
diff --git a/__pycache__/database.cpython-314.pyc b/__pycache__/database.cpython-314.pyc
new file mode 100644
index 000000000..bce213845
Binary files /dev/null and b/__pycache__/database.cpython-314.pyc differ
diff --git a/__pycache__/ingredient.cpython-314.pyc b/__pycache__/ingredient.cpython-314.pyc
new file mode 100644
index 000000000..3cfcbd2c4
Binary files /dev/null and b/__pycache__/ingredient.cpython-314.pyc differ
diff --git a/__pycache__/ingredient_types.cpython-314.pyc b/__pycache__/ingredient_types.cpython-314.pyc
new file mode 100644
index 000000000..2a4b43635
Binary files /dev/null and b/__pycache__/ingredient_types.cpython-314.pyc differ
diff --git a/__pycache__/praktikum.cpython-314.pyc b/__pycache__/praktikum.cpython-314.pyc
new file mode 100644
index 000000000..d2ecf1004
Binary files /dev/null and b/__pycache__/praktikum.cpython-314.pyc differ
diff --git a/__pycache__/test_bun.cpython-314-pytest-9.0.1.pyc b/__pycache__/test_bun.cpython-314-pytest-9.0.1.pyc
new file mode 100644
index 000000000..54bdcf15d
Binary files /dev/null and b/__pycache__/test_bun.cpython-314-pytest-9.0.1.pyc differ
diff --git a/burger.py b/burger.py
index 2b3b6a88b..3f71aaa29 100644
--- a/burger.py
+++ b/burger.py
@@ -1,7 +1,7 @@
 from typing import List
 
-from praktikum.bun import Bun
-from praktikum.ingredient import Ingredient
+from bun import Bun
+from ingredient import Ingredient
 
 
 class Burger:
diff --git a/database.py b/database.py
index 4c75baf71..84d3685d0 100644
--- a/database.py
+++ b/database.py
@@ -1,8 +1,8 @@
 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
+from bun import Bun
+from ingredient import Ingredient
+from ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
 
 
 class Database:
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 000000000..cffeec658
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+pytest
+pytest-cov
\ No newline at end of file
diff --git a/tests/__pycache__/__init__.cpython-314.pyc b/tests/__pycache__/__init__.cpython-314.pyc
new file mode 100644
index 000000000..613a7251d
Binary files /dev/null and b/tests/__pycache__/__init__.cpython-314.pyc differ
diff --git a/tests/__pycache__/test_bun.cpython-314-pytest-9.0.1.pyc b/tests/__pycache__/test_bun.cpython-314-pytest-9.0.1.pyc
new file mode 100644
index 000000000..314e3f2d2
Binary files /dev/null and b/tests/__pycache__/test_bun.cpython-314-pytest-9.0.1.pyc differ
diff --git a/tests/__pycache__/test_burger.cpython-314-pytest-9.0.1.pyc b/tests/__pycache__/test_burger.cpython-314-pytest-9.0.1.pyc
new file mode 100644
index 000000000..dae48adba
Binary files /dev/null and b/tests/__pycache__/test_burger.cpython-314-pytest-9.0.1.pyc differ
diff --git a/tests/__pycache__/test_database.cpython-314-pytest-9.0.1.pyc b/tests/__pycache__/test_database.cpython-314-pytest-9.0.1.pyc
new file mode 100644
index 000000000..318383e62
Binary files /dev/null and b/tests/__pycache__/test_database.cpython-314-pytest-9.0.1.pyc differ
diff --git a/tests/__pycache__/test_ingredient.cpython-314-pytest-9.0.1.pyc b/tests/__pycache__/test_ingredient.cpython-314-pytest-9.0.1.pyc
new file mode 100644
index 000000000..6864f17f3
Binary files /dev/null and b/tests/__pycache__/test_ingredient.cpython-314-pytest-9.0.1.pyc differ
diff --git a/tests/test_bun.py b/tests/test_bun.py
new file mode 100644
index 000000000..9a3ac6715
--- /dev/null
+++ b/tests/test_bun.py
@@ -0,0 +1,18 @@
+from bun import Bun
+
+class TestBun:
+    def test_set_name_and_price(self):
+        bun = Bun('Bun', 100)
+
+        assert bun.name == 'Bun'
+        assert bun.price == 100
+
+    def test_get_name(self):
+        bun = Bun('Bun', 100)
+
+        assert bun.get_name() == 'Bun'
+
+    def test_get_price(self):
+        bun = Bun('Bun', 300)
+
+        assert bun.get_price() == 300
\ No newline at end of file
diff --git a/tests/test_burger.py b/tests/test_burger.py
new file mode 100644
index 000000000..0ed193d61
--- /dev/null
+++ b/tests/test_burger.py
@@ -0,0 +1,71 @@
+from burger import Burger
+from unittest.mock import Mock
+
+class TestBurger:
+    def test_set_buns(self):
+        burger = Burger()
+        mock_bun = Mock()
+        burger.set_buns(mock_bun)
+        
+        assert burger.bun == mock_bun
+
+    def test_add_ingredient(self):
+        burger = Burger()
+        mock_ingredient = Mock()
+        burger.add_ingredient(mock_ingredient)
+        
+        assert len(burger.ingredients) == 1
+        assert burger.ingredients[0] == mock_ingredient
+
+    def test_remove_ingredient(self):
+        burger = Burger()
+        mock_ingredient = Mock()
+        burger.add_ingredient(mock_ingredient)
+        burger.remove_ingredient(0)
+        
+        assert len(burger.ingredients) == 0
+
+    def test_move_ingredient(self):
+        burger = Burger()
+        ingred_1 = Mock()
+        ingred_2 = Mock()
+        burger.add_ingredient(ingred_1)
+        burger.add_ingredient(ingred_2)
+        
+        burger.move_ingredient(0, 1)
+        
+        assert burger.ingredients[0] == ingred_2
+        assert burger.ingredients[1] == ingred_1
+
+    def test_get_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(self):
+        burger = Burger()
+        
+        mock_bun = Mock()
+        mock_bun.get_name.return_value = "Black Bun"
+        mock_bun.get_price.return_value = 100
+        burger.set_buns(mock_bun)
+        
+        mock_ingredient = Mock()
+        mock_ingredient.get_name.return_value = "Cutlet"
+        mock_ingredient.get_price.return_value = 50
+        mock_ingredient.get_type.return_value = "FILLING"
+        burger.add_ingredient(mock_ingredient)
+        
+        receipt = burger.get_receipt()
+    
+        assert "Black Bun" in receipt
+        assert "Cutlet" in receipt
+        assert "Price: 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..632008b9e
--- /dev/null
+++ b/tests/test_database.py
@@ -0,0 +1,29 @@
+from database import Database
+
+class TestDatabase:
+
+    def test_available_buns_returns_correct_count(self):
+        db = Database()
+        buns = db.available_buns()
+        
+        assert len(buns) == 3
+
+    def test_available_ingredients_returns_correct_count(self):
+        db = Database()
+        ingredients = db.available_ingredients()
+        
+        assert len(ingredients) == 6
+
+    def test_database_has_specific_bun(self):
+        db = Database()
+        buns = db.available_buns()
+        
+        names = [bun.get_name() for bun in buns]
+        assert "white bun" in names
+
+    def test_database_has_specific_ingredient(self):
+        db = Database()
+        ingredients = db.available_ingredients()
+        
+        names = [ing.get_name() for ing in ingredients]
+        assert "hot sauce" in names
\ No newline at end of file
diff --git a/tests/test_ingredient.py b/tests/test_ingredient.py
new file mode 100644
index 000000000..1feaa6420
--- /dev/null
+++ b/tests/test_ingredient.py
@@ -0,0 +1,31 @@
+import pytest
+from ingredient import Ingredient
+from ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+class TestIngredient:
+
+    @pytest.mark.parametrize(
+        "ing_type, name, price",
+        [
+            (INGREDIENT_TYPE_SAUCE, "sour cream", 100),
+            (INGREDIENT_TYPE_FILLING, "cutlet", 200),
+            (INGREDIENT_TYPE_SAUCE, "chili sauce", 50),
+        ]
+    )
+    def test_ingredient_getters(self, ing_type, name, price):
+        ingredient = Ingredient(ing_type, name, price)
+        
+        assert ingredient.get_type() == ing_type
+        assert ingredient.get_name() == name
+        assert ingredient.get_price() == price
+
+    def test_ingredient_initialization(self):
+        ing_type = INGREDIENT_TYPE_FILLING
+        name = "chicken"
+        price = 150
+        
+        ingredient = Ingredient(ing_type, name, price)
+        
+        assert ingredient.type == ing_type
+        assert ingredient.name == name
+        assert ingredient.price == price
\ No newline at end of file