diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..b3ec7d5e1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,220 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[codz]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#   Usually these files are written by a python script from a template
+#   before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py.cover
+*.lcov
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+# Pipfile.lock
+
+# UV
+#   Similar to Pipfile.lock, it is generally recommended to include uv.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+# uv.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+# poetry.lock
+# poetry.toml
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#   pdm recommends including project-wide configuration in pdm.toml, but excluding .pdm-python.
+#   https://pdm-project.org/en/latest/usage/project/#working-with-version-control
+# pdm.lock
+# pdm.toml
+.pdm-python
+.pdm-build/
+
+# pixi
+#   Similar to Pipfile.lock, it is generally recommended to include pixi.lock in version control.
+# pixi.lock
+#   Pixi creates a virtual environment in the .pixi directory, just like venv module creates one
+#   in the .venv directory. It is recommended not to include this directory in version control.
+.pixi/*
+!.pixi/config.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule*
+celerybeat.pid
+
+# Redis
+*.rdb
+*.aof
+*.pid
+
+# RabbitMQ
+mnesia/
+rabbitmq/
+rabbitmq-data/
+
+# ActiveMQ
+activemq-data/
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.envrc
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#   JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#   be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#   and can be added to the global gitignore or merged into this file.  For a more nuclear
+#   option (not recommended) you can uncomment the following to ignore the entire idea folder.
+# .idea/
+
+# Abstra
+#   Abstra is an AI-powered process automation framework.
+#   Ignore directories containing user credentials, local state, and settings.
+#   Learn more at https://abstra.io/docs
+.abstra/
+
+# Visual Studio Code
+#   Visual Studio Code specific template is maintained in a separate VisualStudioCode.gitignore 
+#   that can be found at https://github.com/github/gitignore/blob/main/Global/VisualStudioCode.gitignore
+#   and can be added to the global gitignore or merged into this file. However, if you prefer, 
+#   you could uncomment the following to ignore the entire vscode folder
+# .vscode/
+# Temporary file for partial code execution
+tempCodeRunnerFile.py
+
+# Ruff stuff:
+.ruff_cache/
+
+# PyPI configuration file
+.pypirc
+
+# Marimo
+marimo/_static/
+marimo/_lsp/
+__marimo__/
+
+# Streamlit
+.streamlit/secrets.toml
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/praktikum.py b/praktikum/praktikum.py
similarity index 100%
rename from praktikum.py
rename to praktikum/praktikum.py
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/__init__.py b/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 000000000..36205f151
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,28 @@
+import pytest
+from unittest.mock import Mock
+
+from praktikum.burger import Burger
+
+
+@pytest.fixture
+def burger():
+    return Burger()
+
+
+@pytest.fixture
+def mock_bun():
+    bun = Mock()
+    bun.get_name.return_value = "black bun"
+    bun.get_price.return_value = 100
+    return bun
+
+
+@pytest.fixture
+def mock_ingredient():
+    ingredient = Mock()
+    ingredient.get_type.return_value = "SAUCE"
+    ingredient.get_name.return_value = "hot sauce"
+    ingredient.get_price.return_value = 100
+    return ingredient
+
+
diff --git a/tests/test_burger.py b/tests/test_burger.py
new file mode 100644
index 000000000..466a017c5
--- /dev/null
+++ b/tests/test_burger.py
@@ -0,0 +1,93 @@
+import pytest
+from unittest.mock import Mock
+
+
+class TestBurger:
+
+    def test_set_buns(self, burger, mock_bun):
+        burger.set_buns(mock_bun)
+
+        assert burger.bun == mock_bun
+        assert burger.bun.get_name() == "black bun"
+
+
+    def test_add_ingredient(self, burger, mock_ingredient):
+        burger.add_ingredient(mock_ingredient)
+
+        assert burger.ingredients == [mock_ingredient]
+        assert len(burger.ingredients) == 1
+
+
+    def test_remove_ingredient(self, burger, mock_ingredient):
+        ingredient_2 = Mock()
+        burger.ingredients = [mock_ingredient, ingredient_2]
+
+        burger.remove_ingredient(0)
+
+        assert burger.ingredients == [ingredient_2]
+
+
+    def test_move_ingredient(self, burger, mock_ingredient):
+        ingredient_2 = Mock()
+
+        burger.ingredients = [mock_ingredient, ingredient_2]
+
+        burger.move_ingredient(1, 0)
+
+        assert burger.ingredients == [ingredient_2, mock_ingredient]
+
+    @pytest.mark.parametrize(
+        "bun_price, ingredient_prices, expected_price",
+        [
+            (100, [100, 200], 500),
+            (200, [100, 200], 700),
+            (100, [300], 500),
+        ],
+    )
+    def test_get_price(self, burger, bun_price, ingredient_prices, expected_price):
+        bun = Mock()
+        bun.get_price.return_value = bun_price
+
+        ingredients = []
+        for price in ingredient_prices:
+            ingredient = Mock()
+            ingredient.get_price.return_value = price
+            ingredients.append(ingredient)
+
+        burger.set_buns(bun)
+        burger.ingredients = ingredients
+
+        assert burger.get_price() == expected_price
+
+    
+    def test_get_receipt(self, burger):
+        bun = Mock()
+        bun.get_name.return_value = "black bun"
+        bun.get_price.return_value = 100
+
+        sauce = Mock()
+        sauce.get_type.return_value = "SAUCE"
+        sauce.get_name.return_value = "hot sauce"
+        sauce.get_price.return_value = 100
+
+        filling = Mock()
+        filling.get_type.return_value = "FILLING"
+        filling.get_name.return_value = "cutlet"
+        filling.get_price.return_value = 200
+
+        burger.set_buns(bun)
+        burger.ingredients = [sauce, filling]
+
+        expected_receipt = (
+            "(==== black bun ====)\n"
+            "= sauce hot sauce =\n"
+            "= filling cutlet =\n"
+            "(==== black bun ====)\n\n"
+            "Price: 500"
+        )
+
+        assert burger.get_receipt() == expected_receipt
+
+
+
+    
\ No newline at end of file