From 4802399c2086f3e112281902fe8ef96332afeb6a Mon Sep 17 00:00:00 2001 From: llbbl Date: Wed, 3 Sep 2025 02:36:38 +0000 Subject: [PATCH] feat: Set up comprehensive Python testing infrastructure - Configure Poetry as package manager with pyproject.toml - Add pytest, pytest-cov, and pytest-mock as test dependencies - Create tests/ directory structure with unit/integration subdirectories - Set up shared pytest fixtures in conftest.py for common test utilities - Configure pytest with custom markers (unit, integration, slow) - Add comprehensive .gitignore for Python development - Include validation tests to verify testing infrastructure setup --- .gitignore | 76 +++++++++ poetry.lock | 282 +++++++++++++++++++++++++++++++++ pyproject.toml | 85 ++++++++++ tests/__init__.py | 0 tests/conftest.py | 135 ++++++++++++++++ tests/integration/__init__.py | 0 tests/test_setup_validation.py | 101 ++++++++++++ tests/unit/__init__.py | 0 8 files changed, 679 insertions(+) create mode 100644 .gitignore 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a/pyproject.toml b/pyproject.toml new file mode 100644 index 0000000..1649f9f --- /dev/null +++ b/pyproject.toml @@ -0,0 +1,85 @@ +[tool.poetry] +name = "ArithmeticEncodingPython" +version = "1.0.0" +description = "Data Compression using Arithmetic Encoding in Python" +authors = ["Ahmed Fawzy Gad "] +readme = "README.md" +homepage = "https://github.com/ahmedfgad/ArithmeticEncodingPython" +repository = "https://github.com/ahmedfgad/ArithmeticEncodingPython" +keywords = ["arithmetic-encoding", "data-compression", "python"] +classifiers = [ + "Programming Language :: Python :: 3", + "License :: OSI Approved :: MIT License", + "Operating System :: OS Independent", +] +packages = [{include = "pyae.py"}] + +[tool.poetry.dependencies] +python = "^3.8" + +[tool.poetry.group.test.dependencies] +pytest = "^8.0.0" +pytest-cov = "^4.0.0" +pytest-mock = "^3.12.0" + +[tool.poetry.scripts] + +[tool.pytest.ini_options] +testpaths = ["tests"] +python_files = ["test_*.py", "*_test.py"] +python_classes = ["Test*"] +python_functions = ["test_*"] +addopts = [ + "--strict-markers", + "--strict-config", + "--verbose", + "--cov=pyae", + "--cov-report=term-missing", + "--cov-report=html:htmlcov", + "--cov-report=xml:coverage.xml", + "--cov-fail-under=80", +] +markers = [ + "unit: Unit tests", + "integration: Integration tests", + "slow: Slow tests that take more time to run", +] +filterwarnings = [ + "error", + "ignore::UserWarning", + "ignore::DeprecationWarning", +] + +[tool.coverage.run] +source = ["."] +omit = [ + "tests/*", + "setup.py", + "*/venv/*", + "*/.venv/*", + "*/site-packages/*", + "*/__pycache__/*", +] + +[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__.:", + "class .*\\bProtocol\\):", + "@(abc\\.)?abstractmethod", +] +show_missing = true +precision = 2 + +[tool.coverage.html] +directory = "htmlcov" + +[build-system] +requires = ["poetry-core"] +build-backend = "poetry.core.masonry.api" \ No newline at end of file diff --git a/tests/__init__.py b/tests/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/tests/conftest.py b/tests/conftest.py new file mode 100644 index 0000000..bdaabf6 --- /dev/null +++ b/tests/conftest.py @@ -0,0 +1,135 @@ +"""Shared pytest fixtures for the ArithmeticEncodingPython project.""" + +import tempfile +import shutil +from pathlib import Path +from typing import Generator, Any + +import pytest + + +@pytest.fixture +def temp_dir() -> Generator[Path, None, None]: + """Create a temporary directory that gets cleaned up after the test.""" + temp_path = Path(tempfile.mkdtemp()) + try: + yield temp_path + finally: + shutil.rmtree(temp_path, ignore_errors=True) + + +@pytest.fixture +def temp_file(temp_dir: Path) -> Path: + """Create a temporary file in the temp directory.""" + temp_file_path = temp_dir / "test_file.txt" + temp_file_path.touch() + return temp_file_path + + +@pytest.fixture +def sample_data() -> bytes: + """Provide sample binary data for testing.""" + return b"Hello, World! This is sample data for arithmetic encoding tests." + + +@pytest.fixture +def sample_text() -> str: + """Provide sample text data for testing.""" + return "Hello, World! This is sample text for arithmetic encoding tests." + + +@pytest.fixture +def sample_frequencies() -> dict[str, int]: + """Provide sample character frequencies for testing.""" + return { + 'a': 5, + 'b': 3, + 'c': 2, + 'd': 1, + 'e': 8, + 'f': 1, + 'g': 2, + 'h': 4, + 'i': 6, + 'j': 1, + 'k': 1, + 'l': 3, + 'm': 2, + 'n': 6, + 'o': 7, + 'p': 2, + 'q': 1, + 'r': 6, + 's': 6, + 't': 9, + 'u': 3, + 'v': 2, + 'w': 2, + 'x': 1, + 'y': 2, + 'z': 1, + ' ': 10 + } + + +@pytest.fixture +def mock_file_operations(mocker): + """Mock file operations for testing.""" + mock_open = mocker.mock_open() + mocker.patch('builtins.open', mock_open) + return mock_open + + +@pytest.fixture(autouse=True) +def reset_module_state(): + """Reset any global module state before each test.""" + # This fixture runs automatically before each test + # Add any module-specific state reset logic here if needed + yield + + +@pytest.fixture +def capture_output(capsys): + """Fixture to capture stdout/stderr output.""" + def _capture(): + return capsys.readouterr() + return _capture + + +@pytest.fixture(scope="session") +def test_data_dir() -> Path: + """Path to test data directory.""" + return Path(__file__).parent / "data" + + +@pytest.fixture +def mock_random_seed(mocker): + """Mock random seed for reproducible tests.""" + mocker.patch('random.seed') + return mocker + + +# Parametrized fixtures for common test scenarios +@pytest.fixture(params=[ + b"a", + b"abc", + b"hello world", + b"The quick brown fox jumps over the lazy dog", + bytes(range(256)), # All possible byte values +]) +def various_binary_inputs(request) -> bytes: + """Provide various binary inputs for comprehensive testing.""" + return request.param + + +@pytest.fixture(params=[ + "", + "a", + "abc", + "hello world", + "The quick brown fox jumps over the lazy dog", + "Special chars: !@#$%^&*()_+-={}[]|\\:;\"'<>?,./" +]) +def various_text_inputs(request) -> str: + """Provide various text inputs for comprehensive testing.""" + return request.param \ No newline at end of file diff --git a/tests/integration/__init__.py b/tests/integration/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/tests/test_setup_validation.py b/tests/test_setup_validation.py new file mode 100644 index 0000000..729ee9c --- /dev/null +++ b/tests/test_setup_validation.py @@ -0,0 +1,101 @@ +"""Validation tests to ensure the testing infrastructure is working correctly.""" + +import sys +from pathlib import Path + +import pytest + + +class TestSetupValidation: + """Test class to validate testing infrastructure setup.""" + + def test_python_version(self): + """Test that Python version is compatible.""" + assert sys.version_info >= (3, 8), f"Python 3.8+ required, got {sys.version_info}" + + def test_pytest_markers_registered(self, pytestconfig): + """Test that custom markers are properly registered.""" + # Get registered markers from config + markers = list(pytestconfig.getini("markers")) + marker_names = [marker.split(":")[0].strip() for marker in markers] + assert "unit" in marker_names, "unit marker should be registered" + assert "integration" in marker_names, "integration marker should be registered" + assert "slow" in marker_names, "slow marker should be registered" + + @pytest.mark.unit + def test_unit_marker(self): + """Test that unit marker works.""" + assert True, "Unit marker test passed" + + @pytest.mark.integration + def test_integration_marker(self): + """Test that integration marker works.""" + assert True, "Integration marker test passed" + + @pytest.mark.slow + def test_slow_marker(self): + """Test that slow marker works.""" + assert True, "Slow marker test passed" + + def test_project_structure(self): + """Test that project structure is correct.""" + project_root = Path(__file__).parent.parent + + # Check main files exist + assert (project_root / "pyae.py").exists(), "pyae.py should exist" + assert (project_root / "pyproject.toml").exists(), "pyproject.toml should exist" + assert (project_root / "README.md").exists(), "README.md should exist" + + # Check test structure + tests_dir = project_root / "tests" + assert tests_dir.exists(), "tests directory should exist" + assert (tests_dir / "__init__.py").exists(), "tests/__init__.py should exist" + assert (tests_dir / "conftest.py").exists(), "tests/conftest.py should exist" + assert (tests_dir / "unit").exists(), "tests/unit should exist" + assert (tests_dir / "unit" / "__init__.py").exists(), "tests/unit/__init__.py should exist" + assert (tests_dir / "integration").exists(), "tests/integration should exist" + assert (tests_dir / "integration" / "__init__.py").exists(), "tests/integration/__init__.py should exist" + + def test_fixtures_available(self, temp_dir, temp_file, sample_data, sample_text): + """Test that shared fixtures are available and working.""" + # Test temp_dir fixture + assert temp_dir.exists(), "temp_dir fixture should create directory" + assert temp_dir.is_dir(), "temp_dir should be a directory" + + # Test temp_file fixture + assert temp_file.exists(), "temp_file fixture should create file" + assert temp_file.is_file(), "temp_file should be a file" + assert temp_file.parent == temp_dir, "temp_file should be in temp_dir" + + # Test sample data fixtures + assert isinstance(sample_data, bytes), "sample_data should be bytes" + assert len(sample_data) > 0, "sample_data should not be empty" + assert isinstance(sample_text, str), "sample_text should be string" + assert len(sample_text) > 0, "sample_text should not be empty" + + def test_mocking_available(self, mock_file_operations): + """Test that mocking utilities are available.""" + assert mock_file_operations is not None, "mock_file_operations fixture should be available" + + # Test that we can use the mock + with mock_file_operations(): + pass # Mock is working if no exception + + def test_parametrized_fixtures(self, various_binary_inputs, various_text_inputs): + """Test that parametrized fixtures work.""" + assert isinstance(various_binary_inputs, bytes), "various_binary_inputs should be bytes" + assert isinstance(various_text_inputs, str), "various_text_inputs should be string" + + +def test_coverage_configuration(): + """Test that coverage configuration is working.""" + # This test will be covered and should appear in coverage report + covered_line = "This line should be covered" + assert covered_line == "This line should be covered" + + +def test_simple_assertion(): + """Simple test to verify pytest is working.""" + assert 1 + 1 == 2, "Basic math should work" + assert "hello".upper() == "HELLO", "String methods should work" + assert [1, 2, 3] == [1, 2, 3], "List comparison should work" \ No newline at end of file diff --git a/tests/unit/__init__.py b/tests/unit/__init__.py new file mode 100644 index 0000000..e69de29