feat: Add complete Python testing infrastructure with Poetry

.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/
+pip-wheel-metadata/
+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
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# 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
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.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
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__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/
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Project specific
+data/
+logs/
+checkpoints/
+*.pth
+*.pt
+!**/test_*.pth
+
+# Claude
+.claude/*
+
+# Poetry
+# Note: poetry.lock should be committed to version control
+# poetry.lock

CLAUDE.md

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+# Claude Configuration for ResNet Project
+
+## Testing Commands
+
+To run tests, use the following commands:
+
+```bash
+# Run all tests
+poetry run test
+
+# Alternative command (both work)
+poetry run tests
+
+# Run tests with coverage for source code
+poetry run pytest --cov=. --cov-report=term --cov-report=html:htmlcov --cov-report=xml:coverage.xml --cov-fail-under=80
+
+# Run tests with specific markers
+poetry run pytest -m unit        # Run only unit tests
+poetry run pytest -m integration # Run only integration tests
+poetry run pytest -m "not slow"  # Skip slow tests
+
+# Run tests in a specific file
+poetry run pytest tests/test_setup_validation.py
+
+# Run tests with verbose output
+poetry run pytest -vv
+```
+
+## Linting and Type Checking
+
+Currently, no linting or type checking tools are configured. Consider adding:
+- `ruff` or `flake8` for linting
+- `mypy` for type checking
+- `black` for code formatting
+
+## Project Structure
+
+```
+.
+├── pyproject.toml      # Poetry configuration and test settings
+├── poetry.lock         # Locked dependencies (commit this)
+├── .gitignore          # Git ignore patterns
+├── tests/
+│   ├── __init__.py
+│   ├── conftest.py     # Shared pytest fixtures
+│   ├── unit/           # Unit tests
+│   └── integration/    # Integration tests
+└── [source files]      # Your Python modules
+```
+
+## Important Notes
+
+- The testing infrastructure is set up with Poetry as the package manager
+- Pytest is configured with coverage reporting and custom markers
+- Test files should follow the pattern `test_*.py` or `*_test.py`
+- Coverage threshold is set to 80%

pyproject.toml

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+[tool.poetry]
+name = "resnet-project"
+version = "0.1.0"
+description = "ResNet deep learning project"
+authors = ["Your Name <[email protected]>"]
+readme = "README.md"
+packages = [{include = "*.py"}]
+
+[tool.poetry.dependencies]
+python = "^3.8"
+torch = "^2.0.0"
+torchvision = "^0.15.0"
+pillow = "^10.0.0"
+numpy = "^1.24.0"
+
+[tool.poetry.group.dev.dependencies]
+pytest = "^7.4.0"
+pytest-cov = "^4.1.0"
+pytest-mock = "^3.11.0"
+
+[tool.poetry.scripts]
+test = "pytest:main"
+tests = "pytest:main"
+
+[tool.pytest.ini_options]
+minversion = "7.0"
+testpaths = ["tests"]
+python_files = ["test_*.py", "*_test.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+addopts = [
+    "-ra",
+    "--strict-markers",
+    "--strict-config",
+    "-vv",
+]
+markers = [
+    "unit: Unit tests",
+    "integration: Integration tests",
+    "slow: Slow running tests",
+]
+filterwarnings = [
+    "error",
+    "ignore::UserWarning",
+    "ignore::DeprecationWarning",
+]
+
+[tool.coverage.run]
+source = ["."]
+omit = [
+    "*/tests/*",
+    "*/test_*",
+    "*/__pycache__/*",
+    "*/site-packages/*",
+    ".venv/*",
+    "venv/*",
+    "setup.py",
+    "conftest.py",
+]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "def __repr__",
+    "if self.debug:",
+    "if settings.DEBUG",
+    "raise AssertionError",
+    "raise NotImplementedError",
+    "if 0:",
+    "if __name__ == .__main__.:",
+    "if TYPE_CHECKING:",
+    "class .*\\bProtocol\\):",
+    "@(abc\\.)?abstractmethod",
+]
+show_missing = true
+skip_covered = true
+fail_under = 80
+
+[tool.coverage.html]
+directory = "htmlcov"
+
+[tool.coverage.xml]
+output = "coverage.xml"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"