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+# Local Development Setup for Temporal Python Testing
+
+Comprehensive guide for setting up local Temporal development environment with pytest integration and coverage tracking.
+
+## Temporal Server Setup with Docker Compose
+
+### Basic Docker Compose Configuration
+
+```yaml
+# docker-compose.yml
+version: "3.8"
+
+services:
+  temporal:
+    image: temporalio/auto-setup:latest
+    container_name: temporal-dev
+    ports:
+      - "7233:7233" # Temporal server
+      - "8233:8233" # Web UI
+    environment:
+      - DB=postgresql
+      - POSTGRES_USER=temporal
+      - POSTGRES_PWD=temporal
+      - POSTGRES_SEEDS=postgresql
+      - DYNAMIC_CONFIG_FILE_PATH=config/dynamicconfig/development-sql.yaml
+    depends_on:
+      - postgresql
+
+  postgresql:
+    image: postgres:14-alpine
+    container_name: temporal-postgres
+    environment:
+      - POSTGRES_USER=temporal
+      - POSTGRES_PASSWORD=temporal
+      - POSTGRES_DB=temporal
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+
+  temporal-ui:
+    image: temporalio/ui:latest
+    container_name: temporal-ui
+    depends_on:
+      - temporal
+    environment:
+      - TEMPORAL_ADDRESS=temporal:7233
+      - TEMPORAL_CORS_ORIGINS=http://localhost:3000
+    ports:
+      - "8080:8080"
+
+volumes:
+  postgres_data:
+```
+
+### Starting Local Server
+
+```bash
+# Start Temporal server
+docker-compose up -d
+
+# Verify server is running
+docker-compose ps
+
+# View logs
+docker-compose logs -f temporal
+
+# Access Temporal Web UI
+open http://localhost:8080
+
+# Stop server
+docker-compose down
+
+# Reset data (clean slate)
+docker-compose down -v
+```
+
+### Health Check Script
+
+```python
+# scripts/health_check.py
+import asyncio
+from temporalio.client import Client
+
+async def check_temporal_health():
+    """Verify Temporal server is accessible"""
+    try:
+        client = await Client.connect("localhost:7233")
+        print("✓ Connected to Temporal server")
+
+        # Test workflow execution
+        from temporalio.worker import Worker
+
+        @workflow.defn
+        class HealthCheckWorkflow:
+            @workflow.run
+            async def run(self) -> str:
+                return "healthy"
+
+        async with Worker(
+            client,
+            task_queue="health-check",
+            workflows=[HealthCheckWorkflow],
+        ):
+            result = await client.execute_workflow(
+                HealthCheckWorkflow.run,
+                id="health-check",
+                task_queue="health-check",
+            )
+            print(f"✓ Workflow execution successful: {result}")
+
+        return True
+
+    except Exception as e:
+        print(f"✗ Health check failed: {e}")
+        return False
+
+if __name__ == "__main__":
+    asyncio.run(check_temporal_health())
+```
+
+## pytest Configuration
+
+### Project Structure
+
+```
+temporal-project/
+├── docker-compose.yml
+├── pyproject.toml
+├── pytest.ini
+├── requirements.txt
+├── src/
+│   ├── workflows/
+│   │   ├── __init__.py
+│   │   ├── order_workflow.py
+│   │   └── payment_workflow.py
+│   └── activities/
+│       ├── __init__.py
+│       ├── payment_activities.py
+│       └── inventory_activities.py
+├── tests/
+│   ├── conftest.py
+│   ├── unit/
+│   │   ├── test_workflows.py
+│   │   └── test_activities.py
+│   ├── integration/
+│   │   └── test_order_flow.py
+│   └── replay/
+│       └── test_workflow_replay.py
+└── scripts/
+    ├── health_check.py
+    └── export_histories.py
+```
+
+### pytest Configuration
+
+```ini
+# pytest.ini
+[pytest]
+asyncio_mode = auto
+testpaths = tests
+python_files = test_*.py
+python_classes = Test*
+python_functions = test_*
+
+# Markers for test categorization
+markers =
+    unit: Unit tests (fast, isolated)
+    integration: Integration tests (require Temporal server)
+    replay: Replay tests (require production histories)
+    slow: Slow running tests
+
+# Coverage settings
+addopts =
+    --verbose
+    --strict-markers
+    --cov=src
+    --cov-report=term-missing
+    --cov-report=html
+    --cov-fail-under=80
+
+# Async test timeout
+asyncio_default_fixture_loop_scope = function
+```
+
+### Shared Test Fixtures
+
+```python
+# tests/conftest.py
+import pytest
+from temporalio.testing import WorkflowEnvironment
+from temporalio.client import Client
+
+@pytest.fixture(scope="session")
+def event_loop():
+    """Provide event loop for async fixtures"""
+    import asyncio
+    loop = asyncio.get_event_loop_policy().new_event_loop()
+    yield loop
+    loop.close()
+
+@pytest.fixture(scope="session")
+async def temporal_client():
+    """Provide Temporal client connected to local server"""
+    client = await Client.connect("localhost:7233")
+    yield client
+    await client.close()
+
+@pytest.fixture(scope="module")
+async def workflow_env():
+    """Module-scoped time-skipping environment"""
+    env = await WorkflowEnvironment.start_time_skipping()
+    yield env
+    await env.shutdown()
+
+@pytest.fixture
+def activity_env():
+    """Function-scoped activity environment"""
+    from temporalio.testing import ActivityEnvironment
+    return ActivityEnvironment()
+
+@pytest.fixture
+async def test_worker(temporal_client, workflow_env):
+    """Pre-configured test worker"""
+    from temporalio.worker import Worker
+    from src.workflows import OrderWorkflow, PaymentWorkflow
+    from src.activities import process_payment, update_inventory
+
+    return Worker(
+        workflow_env.client,
+        task_queue="test-queue",
+        workflows=[OrderWorkflow, PaymentWorkflow],
+        activities=[process_payment, update_inventory],
+    )
+```
+
+### Dependencies
+
+```txt
+# requirements.txt
+temporalio>=1.5.0
+pytest>=7.4.0
+pytest-asyncio>=0.21.0
+pytest-cov>=4.1.0
+pytest-xdist>=3.3.0  # Parallel test execution
+```
+
+```toml
+# pyproject.toml
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_backend"
+
+[project]
+name = "temporal-project"
+version = "0.1.0"
+requires-python = ">=3.10"
+dependencies = [
+    "temporalio>=1.5.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.4.0",
+    "pytest-asyncio>=0.21.0",
+    "pytest-cov>=4.1.0",
+    "pytest-xdist>=3.3.0",
+]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+```
+
+## Coverage Configuration
+
+### Coverage Settings
+
+```ini
+# .coveragerc
+[run]
+source = src
+omit =
+    */tests/*
+    */venv/*
+    */__pycache__/*
+
+[report]
+exclude_lines =
+    # Exclude type checking blocks
+    if TYPE_CHECKING:
+    # Exclude debug code
+    def __repr__
+    # Exclude abstract methods
+    @abstractmethod
+    # Exclude pass statements
+    pass
+
+[html]
+directory = htmlcov
+```
+
+### Running Tests with Coverage
+
+```bash
+# Run all tests with coverage
+pytest --cov=src --cov-report=term-missing
+
+# Generate HTML coverage report
+pytest --cov=src --cov-report=html
+open htmlcov/index.html
+
+# Run specific test categories
+pytest -m unit  # Unit tests only
+pytest -m integration  # Integration tests only
+pytest -m "not slow"  # Skip slow tests
+
+# Parallel execution (faster)
+pytest -n auto  # Use all CPU cores
+
+# Fail if coverage below threshold
+pytest --cov=src --cov-fail-under=80
+```
+
+### Coverage Report Example
+
+```
+---------- coverage: platform darwin, python 3.11.5 -----------
+Name                                Stmts   Miss  Cover   Missing
+-----------------------------------------------------------------
+src/__init__.py                         0      0   100%
+src/activities/__init__.py              2      0   100%
+src/activities/inventory.py            45      3    93%   78-80
+src/activities/payment.py              38      0   100%
+src/workflows/__init__.py               2      0   100%
+src/workflows/order_workflow.py        67      5    93%   45-49
+src/workflows/payment_workflow.py      52      0   100%
+-----------------------------------------------------------------
+TOTAL                                 206      8    96%
+
+10 files skipped due to complete coverage.
+```
+
+## Development Workflow
+
+### Daily Development Flow
+
+```bash
+# 1. Start Temporal server
+docker-compose up -d
+
+# 2. Verify server health
+python scripts/health_check.py
+
+# 3. Run tests during development
+pytest tests/unit/ --verbose
+
+# 4. Run full test suite before commit
+pytest --cov=src --cov-report=term-missing
+
+# 5. Check coverage
+open htmlcov/index.html
+
+# 6. Stop server
+docker-compose down
+```
+
+### Pre-Commit Hook
+
+```bash
+# .git/hooks/pre-commit
+#!/bin/bash
+
+echo "Running tests..."
+pytest --cov=src --cov-fail-under=80
+
+if [ $? -ne 0 ]; then
+    echo "Tests failed. Commit aborted."
+    exit 1
+fi
+
+echo "All tests passed!"
+```
+
+### Makefile for Common Tasks
+
+```makefile
+# Makefile
+.PHONY: setup test test-unit test-integration coverage clean
+
+setup:
+	docker-compose up -d
+	pip install -r requirements.txt
+	python scripts/health_check.py
+
+test:
+	pytest --cov=src --cov-report=term-missing
+
+test-unit:
+	pytest -m unit --verbose
+
+test-integration:
+	pytest -m integration --verbose
+
+test-replay:
+	pytest -m replay --verbose
+
+test-parallel:
+	pytest -n auto --cov=src
+
+coverage:
+	pytest --cov=src --cov-report=html
+	open htmlcov/index.html
+
+clean:
+	docker-compose down -v
+	rm -rf .pytest_cache htmlcov .coverage
+
+ci:
+	docker-compose up -d
+	sleep 10  # Wait for Temporal to start
+	pytest --cov=src --cov-fail-under=80
+	docker-compose down
+```
+
+### CI/CD Example
+
+```yaml
+# .github/workflows/test.yml
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+
+      - name: Start Temporal server
+        run: docker-compose up -d
+
+      - name: Wait for Temporal
+        run: sleep 10
+
+      - name: Install dependencies
+        run: |
+          pip install -r requirements.txt
+
+      - name: Run tests with coverage
+        run: |
+          pytest --cov=src --cov-report=xml --cov-fail-under=80
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v3
+        with:
+          file: ./coverage.xml
+
+      - name: Cleanup
+        if: always()
+        run: docker-compose down
+```
+
+## Debugging Tips
+
+### Enable Temporal SDK Logging
+
+```python
+import logging
+
+# Enable debug logging for Temporal SDK
+logging.basicConfig(level=logging.DEBUG)
+temporal_logger = logging.getLogger("temporalio")
+temporal_logger.setLevel(logging.DEBUG)
+```
+
+### Interactive Debugging
+
+```python
+# Add breakpoint in test
+@pytest.mark.asyncio
+async def test_workflow_with_breakpoint(workflow_env):
+    import pdb; pdb.set_trace()  # Debug here
+
+    async with Worker(...):
+        result = await workflow_env.client.execute_workflow(...)
+```
+
+### Temporal Web UI
+
+```bash
+# Access Web UI at http://localhost:8080
+# - View workflow executions
+# - Inspect event history
+# - Replay workflows
+# - Monitor workers
+```
+
+## Best Practices
+
+1. **Isolated Environment**: Use Docker Compose for reproducible local setup
+2. **Health Checks**: Always verify Temporal server before running tests
+3. **Fast Feedback**: Use pytest markers to run unit tests quickly
+4. **Coverage Targets**: Maintain ≥80% code coverage
+5. **Parallel Testing**: Use pytest-xdist for faster test runs
+6. **CI/CD Integration**: Automated testing on every commit
+7. **Cleanup**: Clear Docker volumes between test runs if needed
+
+## Troubleshooting
+
+**Issue: Temporal server not starting**
+```bash
+# Check logs
+docker-compose logs temporal
+
+# Reset database
+docker-compose down -v
+docker-compose up -d
+```
+
+**Issue: Tests timing out**
+```python
+# Increase timeout in pytest.ini
+asyncio_default_timeout = 30
+```
+
+**Issue: Port already in use**
+```bash
+# Find process using port 7233
+lsof -i :7233
+
+# Kill process or change port in docker-compose.yml
+```
+
+## Additional Resources
+
+- Temporal Local Development: docs.temporal.io/develop/python/local-dev
+- pytest Documentation: docs.pytest.org
+- Docker Compose: docs.docker.com/compose
+- pytest-asyncio: github.com/pytest-dev/pytest-asyncio