diff --git a/.coverage b/.coverage
new file mode 100644
index 000000000..4b0f70727
Binary files /dev/null and b/.coverage differ
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..c30f77528
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,27 @@
+# Python
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+
+# Virtual env
+venv/
+env/
+.venv/
+
+# IDE
+.idea/
+.vscode/
+
+# pytest
+.pytest_cache/
+.cache/
+.pytest-cov/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
\ No newline at end of file
diff --git a/conftest.py b/conftest.py
new file mode 100644
index 000000000..ab2d6852f
--- /dev/null
+++ b/conftest.py
@@ -0,0 +1,22 @@
+import pytest
+from praktikum.burger import Burger
+from praktikum.bun import Bun
+from praktikum.ingredient import Ingredient
+from praktikum.database import Database
+from praktikum.ingredient_types import INGREDIENT_TYPE_FILLING
+
+@pytest.fixture
+def bun():
+    return Bun("Булка звездной пыли", 100)
+
+@pytest.fixture
+def ingredient():
+    return Ingredient(INGREDIENT_TYPE_FILLING, "Кольца j1407b", 280)
+
+@pytest.fixture
+def burger():
+    return Burger()
+
+@pytest.fixture
+def database():
+    return Database()
\ 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 93%
rename from bun.py
rename to praktikum/bun.py
index 5504bc1f4..8736de4e8 100644
--- a/bun.py
+++ b/praktikum/bun.py
@@ -12,4 +12,4 @@ def get_name(self) -> str:
         return self.name
 
     def get_price(self) -> float:
-        return self.price
+        return self.price
\ No newline at end of file
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/requirement.txt b/requirement.txt
new file mode 100644
index 000000000..d7fbe0faf
Binary files /dev/null and b/requirement.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..5185759ed
--- /dev/null
+++ b/tests/test_bun.py
@@ -0,0 +1,8 @@
+import pytest
+
+class TestBun:
+    def test_get_name(self, bun):
+        assert bun.get_name() == "Булка звездной пыли"
+
+    def test_get_price(self, bun):
+        assert bun.get_price() == 100
\ No newline at end of file
diff --git a/tests/test_burger.py b/tests/test_burger.py
new file mode 100644
index 000000000..5c27b208e
--- /dev/null
+++ b/tests/test_burger.py
@@ -0,0 +1,48 @@
+import pytest
+from praktikum.ingredient import Ingredient
+from praktikum.ingredient_types import INGREDIENT_TYPE_FILLING, INGREDIENT_TYPE_SAUCE
+
+class TestBurger:
+    def test_set_buns(self, burger, bun):
+        burger.set_buns(bun)
+        assert burger.bun == bun
+
+    def test_add_ingredient(self, burger, ingredient):
+        burger.add_ingredient(ingredient)
+        assert len(burger.ingredients) == 1
+
+    def test_remove_ingredient(self, burger, ingredient):
+        burger.add_ingredient(ingredient)
+        burger.remove_ingredient(0)
+        assert len(burger.ingredients) == 0
+
+    def test_move_ingredient(self, burger):
+        ingredient_1 = Ingredient(INGREDIENT_TYPE_FILLING, "Плазма", 300)
+        ingredient_2 = Ingredient(INGREDIENT_TYPE_SAUCE, "Buldak 3x", 360)
+
+        burger.add_ingredient(ingredient_1)
+        burger.add_ingredient(ingredient_2)
+
+        burger.move_ingredient(0, 1)
+
+        assert burger.ingredients[0] == ingredient_2
+
+    def test_get_price(self, burger, bun):
+        burger.set_buns(bun)
+        ingredient_1 = Ingredient(INGREDIENT_TYPE_FILLING, "Плазма", 300)
+        ingredient_2 = Ingredient(INGREDIENT_TYPE_SAUCE, "Buldak 3x", 360)
+
+        burger.add_ingredient(ingredient_1)
+        burger.add_ingredient(ingredient_2)
+
+        assert burger.get_price() == 860
+
+    def test_get_receipt(self, burger, bun, ingredient):
+        burger.set_buns(bun)
+        burger.add_ingredient(ingredient)
+
+        receipt = burger.get_receipt()
+
+        assert 'Булка звездной пыли' in receipt
+        assert 'Кольца j1407b' in receipt
+        assert 'Price:' 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..6b008ed2a
--- /dev/null
+++ b/tests/test_database.py
@@ -0,0 +1,12 @@
+import pytest
+
+class TestDatabase:
+    def test_available_buns(self, database):
+        buns = database.available_buns()
+
+        assert len(buns) == 3
+
+    def test_available_ingredients(self, database):
+        ingredients = database.available_ingredients()
+
+        assert len(ingredients) == 6
\ No newline at end of file
diff --git a/tests/test_ingredient.py b/tests/test_ingredient.py
new file mode 100644
index 000000000..b1cec59b6
--- /dev/null
+++ b/tests/test_ingredient.py
@@ -0,0 +1,18 @@
+import pytest
+from praktikum.ingredient import Ingredient
+from praktikum.ingredient_types import INGREDIENT_TYPE_SAUCE, INGREDIENT_TYPE_FILLING
+
+class TestIngredient:
+    @pytest.mark.parametrize("ingredient_type, expected_type", [
+    (Ingredient(INGREDIENT_TYPE_SAUCE, "Гургунзола", 60), INGREDIENT_TYPE_SAUCE),
+    (Ingredient(INGREDIENT_TYPE_FILLING, "Нестабильная энергия Цефеида", 150), INGREDIENT_TYPE_FILLING)
+                                                                ]
+                            )
+    def test_get_type(self, ingredient_type, expected_type):
+        assert ingredient_type.get_type() == expected_type
+
+    def test_get_name(self, ingredient):
+        assert ingredient.get_name() == "Кольца j1407b"
+
+    def test_get_price(self, ingredient):
+        assert ingredient.get_price() == 280
\ No newline at end of file