feat: added e2e tests

solution/tests/e2e/.env.template

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+# Below all environment variables and default values
+
+BACKEND_BASE_URL=http://127.0.0.1:8080

solution/tests/e2e/.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$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
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# 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
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.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/
+
+# PyPI configuration file
+.pypirc
+
+# Ruff files
+.ruff_cache

solution/tests/e2e/README.md

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+# E2E tests for AdNova
+
+## Prerequisites
+
+Ensure you have the following installed on your system:
+
+- [Python](https://www.python.org/) (>=3.10,<3.12)
+- [uv](https://docs.astral.sh/uv/)
+- [Docker](https://www.docker.com/)
+- [Docker compose](https://docs.docker.com/compose/)
+
+## Warning
+
+Plese note that containers will use ports 13241 to 13246 and 8080, so there is must be no listeners on this ports range.
+
+## Install dependencies
+
+```bash
+uv sync --no-dev
+```
+
+### Customize environment
+
+Customize environment with `docker run` command (or bind .env file to container), for all environment vars and default values see [.env.template](./.env.template).
+
+## Run tests
+
+```bash
+uv run pytest .
+```

solution/tests/e2e/conftest.py

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+import os
+import subprocess
+import time
+from collections.abc import Generator
+
+import httpx
+import pytest
+from dotenv import load_dotenv
+
+load_dotenv()
+
+BACKEND_BASE_URL = os.getenv("BACKEND_BASE_URL", "http://127.0.0.1:8080")
+
+
+@pytest.fixture(scope="session", autouse=True)
+def docker_compose() -> Generator[None]:
+    # btw, this is just in case you've forgotten to shut down compose :)
+    subprocess.run(
+        executable="docker",
+        args=[
+            "docker",
+            "compose",
+            "down",
+            "-v",
+        ],
+        check=True,
+    )
+    subprocess.run(
+        executable="docker",
+        args=[
+            "docker",
+            "compose",
+            "--project-name",
+            "adnova-testing",
+            "up",
+            "-d",
+            "--build",
+            "--force-recreate",
+            "--remove-orphans",
+        ],
+        check=True,
+    )
+    time.sleep(5)
+
+    yield
+
+    subprocess.run(
+        executable="docker",
+        args=[
+            "docker",
+            "compose",
+            "--project-name",
+            "adnova-testing",
+            "down",
+            "-v",
+        ],
+        check=True,
+    )
+
+
+@pytest.fixture(scope="session")
+def client() -> Generator[httpx.Client]:
+    with httpx.Client(base_url=BACKEND_BASE_URL, timeout=10.0) as client:
+        yield client
+
+
+def pytest_collection_modifyitems(items: list[pytest.Item]) -> None:
+    items.sort(key=lambda item: "test_health" not in item.nodeid)

solution/tests/e2e/pyproject.toml

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+[project]
+name = "adnova-e2e-tests"
+version = "0.1.0"
+readme = "README.md"
+requires-python = ">=3.10,<3.12"
+dependencies = [
+    "httpx>=0.28.1",
+    "pytest>=8.3.4",
+    "python-dotenv>=1.0.1",
+]
+
+[dependency-groups]
+dev = [
+    "ruff>=0.9.6",
+]
+
+[tool.ruff]
+builtins = []
+cache-dir = ".ruff_cache"
+exclude = [
+ ".bzr",
+ ".direnv",
+ ".eggs",
+ ".git",
+ ".git-rewrite",
+ ".hg",
+ ".mypy_cache",
+ ".nox",
+ ".pants.d",
+ ".pytype",
+ ".ruff_cache",
+ ".svn",
+ ".tox",
+ ".venv",
+ "__pypackages__",
+ "_build",
+ "buck-out",
+ "dist",
+ "migrations",
+ "node_modules",
+ "venv",
+]
+extend-exclude = []
+extend-include = []
+fix = false
+fix-only = false
+force-exclude = true
+include = ["*.py", "*.pyi", "*.ipynb", "**/pyproject.toml"]
+indent-width = 4
+line-length = 79
+namespace-packages = []
+output-format = "full"
+preview = false
+required-version = ">=0.8.4"
+respect-gitignore = true
+show-fixes = true
+src = [".", "src"]
+target-version = "py310"
+unsafe-fixes = false
+
+[tool.ruff.analyze]
+detect-string-imports = true
+direction = "Dependencies"
+exclude = []
+include-dependencies = {}
+preview = false
+
+[tool.ruff.format]
+docstring-code-format = true
+docstring-code-line-length = 79
+exclude = []
+indent-style = "space"
+line-ending = "lf"
+preview = false
+quote-style  = "double"
+skip-magic-trailing-comma = false
+
+[tool.ruff.lint]
+allowed-confusables = ["ℹ"]
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+exclude = ["tests.py"]
+explicit-preview-rules = false
+extend-fixable = []
+extend-per-file-ignores = {}
+extend-safe-fixes = []
+extend-select = []
+extend-unsafe-fixes = []
+external = []
+fixable = ["ALL"]
+ignore = [
+    "ARG",
+    "D",
+    "ANN401",
+    "COM812",
+    "FBT001",
+    "FBT002",
+    "N813",
+    "S101",
+]
+logger-objects = []
+per-file-ignores = {}
+preview = false
+select = ["ALL"]
+task-tags = ["TODO", "FIXME", "HACK", "WORKOUT"]
+typing-modules = []
+unfixable = []
+
+[tool.ruff.lint.pylint]
+max-args = 6
+

solution/tests/e2e/scripts/check

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+#!/bin/bash
+
+GREEN='\033[1;32m'
+NC='\033[0m'
+
+uvx ruff format .
+uvx ruff check . --fix
+printf "${GREEN}Linters/formatters runned${NC}\n"

solution/tests/e2e/tests/test_backend_health.py

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+import logging
+from http import HTTPStatus as status
+
+from httpx import Client
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+
+def test_healthcheck(client: Client) -> None:
+    response = client.get("/health?format=json")
+    assert response.status_code == status.OK
+
+    response_data = response.json()
+
+    unhealthy_services = [
+        service
+        for service, status in response_data.items()
+        if status != "working"
+    ]
+
+    for service in unhealthy_services:
+        logger.error(
+            "Service %s unhealthy: %s", service, response_data[service]
+        )
+
+    assert not unhealthy_services, (
+        f"Some services are unhealthy: {', '.join(unhealthy_services)}"
+    )