diff --git a/.gitignore b/.gitignore
index 683d68d..a4310e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,42 @@ package-lock.json
 node_modules
 dist
 nohup.out
+
+# Testing
+.pytest_cache/
+.coverage
+htmlcov/
+coverage.xml
+*.cover
+.hypothesis/
+.tox/
+.coverage.*
+
+# Claude settings
+.claude/*
+
+# Virtual environments
+venv/
+ENV/
+env/
+.venv/
+virtualenv/
+
+# IDE files
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Build artifacts
+build/
+dist/
+*.egg-info/
+.eggs/
+*.egg
+
+# MyPy
+.mypy_cache/
+.dmypy.json
+dmypy.json
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..06e7b49
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,406 @@
+# This file is automatically @generated by Poetry 2.1.3 and should not be changed by hand.
+
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+s3transfer = ">=0.13.0,<0.14.0"
+
+[package.extras]
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+
+[[package]]
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+python-versions = ">=3.9"
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+
+[package.extras]
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+
+[[package]]
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+    {file = "iniconfig-2.1.0.tar.gz", hash = "sha256:3abbd2e30b36733fee78f9c7f7308f2d0050e88f0087fd25c2645f63c773e1c7"},
+]
+
+[[package]]
+name = "jmespath"
+version = "1.0.1"
+description = "JSON Matching Expressions"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "jmespath-1.0.1-py3-none-any.whl", hash = "sha256:02e2e4cc71b5bcab88332eebf907519190dd9e6e82107fa7f83b1003a6252980"},
+    {file = "jmespath-1.0.1.tar.gz", hash = "sha256:90261b206d6defd58fdd5e85f478bf633a2901798906be2ad389150c5c60edbe"},
+]
+
+[[package]]
+name = "neo4j"
+version = "5.28.1"
+description = "Neo4j Bolt driver for Python"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "neo4j-5.28.1-py3-none-any.whl", hash = "sha256:6755ef9e5f4e14b403aef1138fb6315b120631a0075c138b5ddb2a06b87b09fd"},
+    {file = "neo4j-5.28.1.tar.gz", hash = "sha256:ae8e37a1d895099062c75bc359b2cce62099baac7be768d0eba7180c1298e214"},
+]
+
+[package.dependencies]
+pytz = "*"
+
+[package.extras]
+numpy = ["numpy (>=1.7.0,<3.0.0)"]
+pandas = ["numpy (>=1.7.0,<3.0.0)", "pandas (>=1.1.0,<3.0.0)"]
+pyarrow = ["pyarrow (>=1.0.0)"]
+
+[[package]]
+name = "packaging"
+version = "25.0"
+description = "Core utilities for Python packages"
+optional = false
+python-versions = ">=3.8"
+groups = ["dev"]
+files = [
+    {file = "packaging-25.0-py3-none-any.whl", hash = "sha256:29572ef2b1f17581046b3a2227d5c611fb25ec70ca1ba8554b24b0e69331a484"},
+    {file = "packaging-25.0.tar.gz", hash = "sha256:d443872c98d677bf60f6a1f2f8c1cb748e8fe762d2bf9d3148b5599295b0fc4f"},
+]
+
+[[package]]
+name = "pluggy"
+version = "1.6.0"
+description = "plugin and hook calling mechanisms for python"
+optional = false
+python-versions = ">=3.9"
+groups = ["dev"]
+files = [
+    {file = "pluggy-1.6.0-py3-none-any.whl", hash = "sha256:e920276dd6813095e9377c0bc5566d94c932c33b27a3e3945d8389c374dd4746"},
+    {file = "pluggy-1.6.0.tar.gz", hash = "sha256:7dcc130b76258d33b90f61b658791dede3486c3e6bfb003ee5c9bfb396dd22f3"},
+]
+
+[package.extras]
+dev = ["pre-commit", "tox"]
+testing = ["coverage", "pytest", "pytest-benchmark"]
+
+[[package]]
+name = "pygments"
+version = "2.19.2"
+description = "Pygments is a syntax highlighting package written in Python."
+optional = false
+python-versions = ">=3.8"
+groups = ["dev"]
+files = [
+    {file = "pygments-2.19.2-py3-none-any.whl", hash = "sha256:86540386c03d588bb81d44bc3928634ff26449851e99741617ecb9037ee5ec0b"},
+    {file = "pygments-2.19.2.tar.gz", hash = "sha256:636cb2477cec7f8952536970bc533bc43743542f70392ae026374600add5b887"},
+]
+
+[package.extras]
+windows-terminal = ["colorama (>=0.4.6)"]
+
+[[package]]
+name = "pytest"
+version = "8.4.1"
+description = "pytest: simple powerful testing with Python"
+optional = false
+python-versions = ">=3.9"
+groups = ["dev"]
+files = [
+    {file = "pytest-8.4.1-py3-none-any.whl", hash = "sha256:539c70ba6fcead8e78eebbf1115e8b589e7565830d7d006a8723f19ac8a0afb7"},
+    {file = "pytest-8.4.1.tar.gz", hash = "sha256:7c67fd69174877359ed9371ec3af8a3d2b04741818c51e5e99cc1742251fa93c"},
+]
+
+[package.dependencies]
+colorama = {version = ">=0.4", markers = "sys_platform == \"win32\""}
+iniconfig = ">=1"
+packaging = ">=20"
+pluggy = ">=1.5,<2"
+pygments = ">=2.7.2"
+
+[package.extras]
+dev = ["argcomplete", "attrs (>=19.2)", "hypothesis (>=3.56)", "mock", "requests", "setuptools", "xmlschema"]
+
+[[package]]
+name = "pytest-cov"
+version = "5.0.0"
+description = "Pytest plugin for measuring coverage."
+optional = false
+python-versions = ">=3.8"
+groups = ["dev"]
+files = [
+    {file = "pytest-cov-5.0.0.tar.gz", hash = "sha256:5837b58e9f6ebd335b0f8060eecce69b662415b16dc503883a02f45dfeb14857"},
+    {file = "pytest_cov-5.0.0-py3-none-any.whl", hash = "sha256:4f0764a1219df53214206bf1feea4633c3b558a2925c8b59f144f682861ce652"},
+]
+
+[package.dependencies]
+coverage = {version = ">=5.2.1", extras = ["toml"]}
+pytest = ">=4.6"
+
+[package.extras]
+testing = ["fields", "hunter", "process-tests", "pytest-xdist", "virtualenv"]
+
+[[package]]
+name = "pytest-mock"
+version = "3.14.1"
+description = "Thin-wrapper around the mock package for easier use with pytest"
+optional = false
+python-versions = ">=3.8"
+groups = ["dev"]
+files = [
+    {file = "pytest_mock-3.14.1-py3-none-any.whl", hash = "sha256:178aefcd11307d874b4cd3100344e7e2d888d9791a6a1d9bfe90fbc1b74fd1d0"},
+    {file = "pytest_mock-3.14.1.tar.gz", hash = "sha256:159e9edac4c451ce77a5cdb9fc5d1100708d2dd4ba3c3df572f14097351af80e"},
+]
+
+[package.dependencies]
+pytest = ">=6.2.5"
+
+[package.extras]
+dev = ["pre-commit", "pytest-asyncio", "tox"]
+
+[[package]]
+name = "python-dateutil"
+version = "2.9.0.post0"
+description = "Extensions to the standard Python datetime module"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
+groups = ["main"]
+files = [
+    {file = "python-dateutil-2.9.0.post0.tar.gz", hash = "sha256:37dd54208da7e1cd875388217d5e00ebd4179249f90fb72437e91a35459a0ad3"},
+    {file = "python_dateutil-2.9.0.post0-py2.py3-none-any.whl", hash = "sha256:a8b2bc7bffae282281c8140a97d3aa9c14da0b136dfe83f850eea9a5f7470427"},
+]
+
+[package.dependencies]
+six = ">=1.5"
+
+[[package]]
+name = "pytz"
+version = "2025.2"
+description = "World timezone definitions, modern and historical"
+optional = false
+python-versions = "*"
+groups = ["main"]
+files = [
+    {file = "pytz-2025.2-py2.py3-none-any.whl", hash = "sha256:5ddf76296dd8c44c26eb8f4b6f35488f3ccbf6fbbd7adee0b7262d43f0ec2f00"},
+    {file = "pytz-2025.2.tar.gz", hash = "sha256:360b9e3dbb49a209c21ad61809c7fb453643e048b38924c765813546746e81c3"},
+]
+
+[[package]]
+name = "s3transfer"
+version = "0.13.0"
+description = "An Amazon S3 Transfer Manager"
+optional = false
+python-versions = ">=3.9"
+groups = ["main"]
+files = [
+    {file = "s3transfer-0.13.0-py3-none-any.whl", hash = "sha256:0148ef34d6dd964d0d8cf4311b2b21c474693e57c2e069ec708ce043d2b527be"},
+    {file = "s3transfer-0.13.0.tar.gz", hash = "sha256:f5e6db74eb7776a37208001113ea7aa97695368242b364d73e91c981ac522177"},
+]
+
+[package.dependencies]
+botocore = ">=1.37.4,<2.0a.0"
+
+[package.extras]
+crt = ["botocore[crt] (>=1.37.4,<2.0a.0)"]
+
+[[package]]
+name = "six"
+version = "1.17.0"
+description = "Python 2 and 3 compatibility utilities"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
+groups = ["main"]
+files = [
+    {file = "six-1.17.0-py2.py3-none-any.whl", hash = "sha256:4721f391ed90541fddacab5acf947aa0d3dc7d27b2e1e8eda2be8970586c3274"},
+    {file = "six-1.17.0.tar.gz", hash = "sha256:ff70335d468e7eb6ec65b95b99d3a2836546063f63acc5171de367e834932a81"},
+]
+
+[[package]]
+name = "smmap"
+version = "5.0.2"
+description = "A pure Python implementation of a sliding window memory map manager"
+optional = false
+python-versions = ">=3.7"
+groups = ["main"]
+files = [
+    {file = "smmap-5.0.2-py3-none-any.whl", hash = "sha256:b30115f0def7d7531d22a0fb6502488d879e75b260a9db4d0819cfb25403af5e"},
+    {file = "smmap-5.0.2.tar.gz", hash = "sha256:26ea65a03958fa0c8a1c7e8c7a58fdc77221b8910f6be2131affade476898ad5"},
+]
+
+[[package]]
+name = "urllib3"
+version = "2.5.0"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+optional = false
+python-versions = ">=3.9"
+groups = ["main"]
+files = [
+    {file = "urllib3-2.5.0-py3-none-any.whl", hash = "sha256:e6b01673c0fa6a13e374b50871808eb3bf7046c4b125b216f6bf1cc604cff0dc"},
+    {file = "urllib3-2.5.0.tar.gz", hash = "sha256:3fc47733c7e419d4bc3f6b3dc2b4f890bb743906a30d56ba4a5bfa4bbff92760"},
+]
+
+[package.extras]
+brotli = ["brotli (>=1.0.9) ; platform_python_implementation == \"CPython\"", "brotlicffi (>=0.8.0) ; platform_python_implementation != \"CPython\""]
+h2 = ["h2 (>=4,<5)"]
+socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
+zstd = ["zstandard (>=0.18.0)"]
+
+[metadata]
+lock-version = "2.1"
+python-versions = "^3.11"
+content-hash = "653335fd69fad0f769387ba68099d6f00d832b288c3c524b34e20d4082e7a88d"
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..f993723
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,87 @@
+[tool.poetry]
+name = "awspx"
+version = "0.1.0"
+description = "A graph-based tool for visualizing effective access and resource relationships within AWS"
+authors = ["Your Name <you@example.com>"]
+readme = "README.md"
+license = "MIT"
+packages = [{include = "lib"}, {include = "scripts"}]
+
+[tool.poetry.dependencies]
+python = "^3.11"
+boto3 = "*"
+botocore = "*"
+gitpython = "*"
+neo4j = "*"
+
+[tool.poetry.group.dev.dependencies]
+pytest = "^8.0.0"
+pytest-cov = "^5.0.0"
+pytest-mock = "^3.14.0"
+
+[tool.poetry.scripts]
+awspx = "cli:main"
+test = "scripts.test_runner:main"
+tests = "scripts.test_runner:main"
+
+[tool.pytest.ini_options]
+minversion = "8.0"
+testpaths = ["tests"]
+python_files = ["test_*.py", "*_test.py"]
+python_classes = ["Test*", "*Tests"]
+python_functions = ["test_*"]
+addopts = [
+    "-v",
+    "--strict-markers",
+    "--tb=short",
+    "--cov=lib",
+    "--cov-report=html",
+    "--cov-report=xml",
+    "--cov-report=term-missing:skip-covered",
+]
+markers = [
+    "unit: Unit tests",
+    "integration: Integration tests",
+    "slow: Tests that take a long time to run",
+]
+filterwarnings = [
+    "error",
+    "ignore::UserWarning",
+    "ignore::DeprecationWarning",
+]
+
+[tool.coverage.run]
+source = ["lib"]
+omit = [
+    "*/tests/*",
+    "*/test_*",
+    "*/__pycache__/*",
+    "*/venv/*",
+    "*/virtualenv/*",
+]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "def __repr__",
+    "if self\\.debug:",
+    "if __name__ == .__main__.:",
+    "raise AssertionError",
+    "raise NotImplementedError",
+    "if 0:",
+    "if False:",
+    "pass",
+]
+show_missing = true
+precision = 2
+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"
\ No newline at end of file
diff --git a/scripts/__init__.py b/scripts/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/scripts/test_runner.py b/scripts/test_runner.py
new file mode 100644
index 0000000..768ed03
--- /dev/null
+++ b/scripts/test_runner.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+"""Simple test runner script to enable poetry run test/tests commands."""
+import subprocess
+import sys
+
+
+def main():
+    """Run pytest with all configured options."""
+    result = subprocess.run([sys.executable, "-m", "pytest"] + sys.argv[1:])
+    sys.exit(result.returncode)
+
+
+if __name__ == "__main__":
+    main()
\ 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..a633950
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,108 @@
+"""
+Shared pytest fixtures and configuration for all tests.
+"""
+import os
+import sys
+import tempfile
+from pathlib import Path
+from unittest.mock import Mock, MagicMock
+
+import pytest
+
+# Add the project root to Python path
+PROJECT_ROOT = Path(__file__).parent.parent
+sys.path.insert(0, str(PROJECT_ROOT))
+
+
+@pytest.fixture
+def temp_dir():
+    """Create a temporary directory for test files."""
+    with tempfile.TemporaryDirectory() as tmpdir:
+        yield Path(tmpdir)
+
+
+@pytest.fixture
+def mock_boto3_client():
+    """Mock boto3 client for AWS service testing."""
+    client = MagicMock()
+    client.describe_instances.return_value = {
+        'Reservations': []
+    }
+    client.list_buckets.return_value = {
+        'Buckets': []
+    }
+    return client
+
+
+@pytest.fixture
+def mock_boto3_session():
+    """Mock boto3 session."""
+    session = MagicMock()
+    session.client = MagicMock(return_value=mock_boto3_client())
+    session.get_available_regions = MagicMock(return_value=['us-east-1', 'us-west-2'])
+    return session
+
+
+@pytest.fixture
+def mock_neo4j_driver():
+    """Mock Neo4j driver for graph database testing."""
+    driver = MagicMock()
+    session = MagicMock()
+    driver.session.return_value = session
+    return driver
+
+
+@pytest.fixture
+def sample_aws_config():
+    """Sample AWS configuration for testing."""
+    return {
+        'aws_access_key_id': 'test_access_key',
+        'aws_secret_access_key': 'test_secret_key',
+        'region': 'us-east-1'
+    }
+
+
+@pytest.fixture
+def sample_aws_resource():
+    """Sample AWS resource data for testing."""
+    return {
+        'ResourceType': 'EC2Instance',
+        'ResourceId': 'i-1234567890abcdef0',
+        'Properties': {
+            'InstanceType': 't2.micro',
+            'State': 'running',
+            'Tags': [
+                {'Key': 'Name', 'Value': 'TestInstance'}
+            ]
+        }
+    }
+
+
+@pytest.fixture(autouse=True)
+def reset_environment():
+    """Reset environment variables before each test."""
+    original_env = os.environ.copy()
+    yield
+    os.environ.clear()
+    os.environ.update(original_env)
+
+
+@pytest.fixture
+def mock_console(mocker):
+    """Mock console for output testing."""
+    console = mocker.MagicMock()
+    console.notice = mocker.MagicMock()
+    console.task = mocker.MagicMock()
+    console.error = mocker.MagicMock()
+    console.info = mocker.MagicMock()
+    return console
+
+
+@pytest.fixture
+def mock_git_repo():
+    """Mock git repository for update testing."""
+    repo = MagicMock()
+    repo.head.commit = "abc123"
+    repo.remotes.origin = MagicMock()
+    repo.git = MagicMock()
+    return repo
\ 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..ae574e6
--- /dev/null
+++ b/tests/test_setup_validation.py
@@ -0,0 +1,102 @@
+"""
+Validation tests to ensure the testing infrastructure is properly set up.
+"""
+import sys
+from pathlib import Path
+
+import pytest
+
+
+class TestSetupValidation:
+    """Validate that the testing infrastructure is properly configured."""
+
+    def test_project_imports(self):
+        """Test that project modules can be imported."""
+        # These imports should work if the project is properly configured
+        import lib
+        import lib.aws
+        import lib.graph
+        import lib.util
+        
+        assert lib is not None
+        assert lib.aws is not None
+        assert lib.graph is not None
+        assert lib.util is not None
+
+    def test_fixtures_available(self, temp_dir, mock_boto3_client, sample_aws_config):
+        """Test that pytest fixtures are available and working."""
+        assert temp_dir.exists()
+        assert temp_dir.is_dir()
+        
+        assert mock_boto3_client is not None
+        assert hasattr(mock_boto3_client, 'describe_instances')
+        
+        assert sample_aws_config is not None
+        assert 'aws_access_key_id' in sample_aws_config
+        assert 'region' in sample_aws_config
+
+    def test_markers_configured(self, request):
+        """Test that custom markers are properly configured."""
+        markers = request.config.getini("markers")
+        marker_names = [m.split(":")[0].strip() for m in markers]
+        
+        assert "unit" in marker_names
+        assert "integration" in marker_names
+        assert "slow" in marker_names
+
+    @pytest.mark.unit
+    def test_unit_marker(self):
+        """Test that unit marker works."""
+        assert True
+
+    @pytest.mark.integration
+    def test_integration_marker(self):
+        """Test that integration marker works."""
+        assert True
+
+    @pytest.mark.slow
+    def test_slow_marker(self):
+        """Test that slow marker works."""
+        assert True
+
+    def test_coverage_configured(self):
+        """Test that coverage is properly configured."""
+        # This test will pass if coverage is running
+        # The actual coverage configuration is tested by running pytest with coverage
+        assert True
+
+    def test_python_version(self):
+        """Test that we're running on the expected Python version."""
+        assert sys.version_info >= (3, 11)
+
+    def test_test_directories_exist(self):
+        """Test that test directories are properly created."""
+        test_root = Path(__file__).parent
+        
+        assert test_root.exists()
+        assert (test_root / "unit").exists()
+        assert (test_root / "integration").exists()
+        assert (test_root / "conftest.py").exists()
+
+    def test_mock_fixtures(self, mock_console, mock_neo4j_driver, mock_git_repo):
+        """Test that mock fixtures work properly."""
+        # Test mock_console
+        mock_console.notice("test")
+        mock_console.notice.assert_called_once_with("test")
+        
+        # Test mock_neo4j_driver
+        session = mock_neo4j_driver.session()
+        assert session is not None
+        
+        # Test mock_git_repo
+        assert mock_git_repo.head.commit == "abc123"
+
+    def test_environment_reset(self):
+        """Test that environment is properly reset between tests."""
+        import os
+        
+        # Set a test variable
+        os.environ['TEST_VAR'] = 'test_value'
+        assert os.environ.get('TEST_VAR') == 'test_value'
+        
+        # The reset_environment fixture should clean this up after the test
\ 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