diff --git a/.coverage b/.coverage
new file mode 100644
index 000000000..fd701d33e
Binary files /dev/null and b/.coverage differ
diff --git a/__pycache__/burger.cpython-314.pyc b/__pycache__/burger.cpython-314.pyc
new file mode 100644
index 000000000..3629203f4
Binary files /dev/null and b/__pycache__/burger.cpython-314.pyc differ
diff --git a/__pycache__/praktikum.cpython-314.pyc b/__pycache__/praktikum.cpython-314.pyc
new file mode 100644
index 000000000..c6dfe7f67
Binary files /dev/null and b/__pycache__/praktikum.cpython-314.pyc 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/praktikum/__pycache__/__init__.cpython-314.pyc b/praktikum/__pycache__/__init__.cpython-314.pyc
new file mode 100644
index 000000000..09d607542
Binary files /dev/null and b/praktikum/__pycache__/__init__.cpython-314.pyc differ
diff --git a/praktikum/__pycache__/bun.cpython-314.pyc b/praktikum/__pycache__/bun.cpython-314.pyc
new file mode 100644
index 000000000..6c89750f9
Binary files /dev/null and b/praktikum/__pycache__/bun.cpython-314.pyc differ
diff --git a/praktikum/__pycache__/burger.cpython-314.pyc b/praktikum/__pycache__/burger.cpython-314.pyc
new file mode 100644
index 000000000..ba69689d3
Binary files /dev/null and b/praktikum/__pycache__/burger.cpython-314.pyc differ
diff --git a/praktikum/__pycache__/ingredient.cpython-314.pyc b/praktikum/__pycache__/ingredient.cpython-314.pyc
new file mode 100644
index 000000000..75a7bc080
Binary files /dev/null and b/praktikum/__pycache__/ingredient.cpython-314.pyc differ
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/main.py
similarity index 100%
rename from praktikum.py
rename to praktikum/main.py
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/__pycache__/__init__.cpython-314.pyc b/tests/__pycache__/__init__.cpython-314.pyc
new file mode 100644
index 000000000..9855c7373
Binary files /dev/null and b/tests/__pycache__/__init__.cpython-314.pyc differ
diff --git a/tests/__pycache__/test_burger.cpython-314-pytest-9.1.1.pyc b/tests/__pycache__/test_burger.cpython-314-pytest-9.1.1.pyc
new file mode 100644
index 000000000..da5e527cb
Binary files /dev/null and b/tests/__pycache__/test_burger.cpython-314-pytest-9.1.1.pyc differ
diff --git a/tests/test_burger.py b/tests/test_burger.py
new file mode 100644
index 000000000..19083aa8b
--- /dev/null
+++ b/tests/test_burger.py
@@ -0,0 +1,97 @@
+import pytest
+from unittest.mock import Mock
+from praktikum.burger import Burger
+
+
+class TestBurger:
+
+    def test_set_buns_success(self):
+        burger = Burger()
+        mock_bun = Mock()
+        burger.set_buns(mock_bun)
+
+        assert burger.bun == mock_bun
+
+    def test_add_ingredient_success(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_success(self):
+        burger = Burger()
+        mock_ing_1 = Mock()
+        mock_ing_2 = Mock()
+        burger.add_ingredient(mock_ing_1)
+        burger.add_ingredient(mock_ing_2)
+
+        burger.remove_ingredient(0)
+
+        assert len(burger.ingredients) == 1
+        assert burger.ingredients[0] == mock_ing_2
+
+    def test_move_ingredient_success(self):
+        burger = Burger()
+        mock_ing_1 = Mock()
+        mock_ing_2 = Mock()
+        burger.add_ingredient(mock_ing_1)
+        burger.add_ingredient(mock_ing_2)
+
+        burger.move_ingredient(0, 1)
+
+        assert burger.ingredients == [mock_ing_2, mock_ing_1]
+
+    @pytest.mark.parametrize(
+        "bun_price, ing_prices, expected_price",
+        [
+            (100.0, [100.0, 200.0], 500.0),
+            (200.0, [], 400.0),
+            (150.5, [50.5], 351.5),
+        ],
+    )
+    def test_get_price_success(self, bun_price, ing_prices, expected_price):
+        burger = Burger()
+
+        mock_bun = Mock()
+        mock_bun.get_price.return_value = bun_price
+        burger.set_buns(mock_bun)
+
+        for price in ing_prices:
+            mock_ing = Mock()
+            mock_ing.get_price.return_value = price
+            burger.add_ingredient(mock_ing)
+
+        assert burger.get_price() == expected_price
+
+    def test_get_receipt_success(self):
+        burger = Burger()
+
+        mock_bun = Mock()
+        mock_bun.get_name.return_value = "black bun"
+        mock_bun.get_price.return_value = 100.0
+
+        mock_ing_1 = Mock()
+        mock_ing_1.get_type.return_value = "sauce"
+        mock_ing_1.get_name.return_value = "chili sauce"
+        mock_ing_1.get_price.return_value = 300.0
+
+        mock_ing_2 = Mock()
+        mock_ing_2.get_type.return_value = "filling"
+        mock_ing_2.get_name.return_value = "cutlet"
+        mock_ing_2.get_price.return_value = 100.0
+
+        burger.set_buns(mock_bun)
+        burger.add_ingredient(mock_ing_1)
+        burger.add_ingredient(mock_ing_2)
+
+        expected_receipt = (
+            "(==== black bun ====)\n"
+            "= sauce chili sauce =\n"
+            "= filling cutlet =\n"
+            "(==== black bun ====)\n\n"
+            "Price: 600.0"
+        )
+
+        assert burger.get_receipt() == expected_receipt
\ No newline at end of file