feat: Task Management API with comprehensive test suite

.gitignore

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+__pycache__/
+*.pyc
+.coverage
+.pytest_cache/
+*.egg-info/
+dist/
+build/
+.env

SETUP.md

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+# Setup and Run Instructions
+
+This document provides instructions for setting up and running the Task Management API.
+
+## Prerequisites
+
+- Python 3.9 or higher
+- pip (Python package manager)
+
+## Installation
+
+1. **Clone the repository** (if not already done):
+   ```bash
+   git clone https://github.com/automationExamples/spec-driven-development.git
+   cd spec-driven-development
+   ```
+
+2. **Create a virtual environment** (recommended):
+   ```bash
+   python -m venv venv
+   source venv/bin/activate  # On Windows: venv\Scripts\activate
+   ```
+
+3. **Install dependencies**:
+   ```bash
+   pip install -r requirements.txt
+   ```
+
+## Running the Application
+
+### Start the API Server
+
+```bash
+uvicorn app.main:app --reload
+```
+
+The API will be available at:
+- **API Base URL**: http://localhost:8000
+- **Interactive API Docs (Swagger)**: http://localhost:8000/docs
+- **Alternative Docs (ReDoc)**: http://localhost:8000/redoc
+
+### Available Endpoints
+
+| Method | Endpoint | Description |
+|--------|----------|-------------|
+| GET | `/` | API information |
+| GET | `/health` | Health check |
+| POST | `/api/tasks` | Create a new task |
+| GET | `/api/tasks` | List all tasks (with optional filters) |
+| GET | `/api/tasks/search?q=` | Search tasks |
+| GET | `/api/tasks/{id}` | Get a specific task |
+| PUT | `/api/tasks/{id}` | Update a task |
+| DELETE | `/api/tasks/{id}` | Delete a task |
+
+### Query Parameters for Filtering
+
+- `status`: Filter by status (`pending`, `in_progress`, `completed`)
+- `priority`: Filter by priority (`low`, `medium`, `high`)
+
+Example:
+```bash
+curl "http://localhost:8000/api/tasks?status=pending&priority=high"
+```
+
+## Running Tests
+
+### Run All Tests
+
+```bash
+pytest
+```
+
+### Run Tests with Verbose Output
+
+```bash
+pytest -v
+```
+
+### Run Tests with Coverage Report
+
+```bash
+pytest --cov=app --cov-report=term-missing
+```
+
+### Run Specific Test File
+
+```bash
+pytest tests/test_tasks.py -v
+```
+
+### Run Specific Test Class
+
+```bash
+pytest tests/test_tasks.py::TestCreateTask -v
+```
+
+## Example API Usage
+
+### Create a Task
+
+```bash
+curl -X POST "http://localhost:8000/api/tasks" \
+  -H "Content-Type: application/json" \
+  -d '{"title": "Buy groceries", "priority": "high"}'
+```
+
+### List All Tasks
+
+```bash
+curl "http://localhost:8000/api/tasks"
+```
+
+### Search Tasks
+
+```bash
+curl "http://localhost:8000/api/tasks/search?q=groceries"
+```
+
+### Update a Task
+
+```bash
+curl -X PUT "http://localhost:8000/api/tasks/{task_id}" \
+  -H "Content-Type: application/json" \
+  -d '{"status": "completed"}'
+```
+
+### Delete a Task
+
+```bash
+curl -X DELETE "http://localhost:8000/api/tasks/{task_id}"
+```
+
+## Project Structure
+
+```
+/
+├── SPECS/                    # Feature specifications
+│   ├── feature-template.md
+│   ├── task-management-api.md
+│   ├── testing-framework.md
+│   └── project-setup.md
+├── app/                      # Application source code
+│   ├── __init__.py
+│   ├── main.py               # FastAPI application entry
+│   ├── models.py             # Pydantic models
+│   ├── storage.py            # Data persistence layer
+│   └── routers/
+│       └── tasks.py          # Task endpoints
+├── tests/                    # Test suite
+│   ├── __init__.py
+│   ├── conftest.py           # Test fixtures
+│   ├── test_models.py        # Model unit tests
+│   └── test_tasks.py         # API integration tests
+├── requirements.txt          # Python dependencies
+├── README.md                 # Assessment instructions
+├── RULES.md                  # Development rules
+├── TODO.md                   # Task tracking
+└── SETUP.md                  # This file
+```
+
+## Troubleshooting
+
+### Port Already in Use
+
+If port 8000 is in use, specify a different port:
+```bash
+uvicorn app.main:app --reload --port 8001
+```
+
+### Import Errors
+
+Ensure you're in the project root directory and the virtual environment is activated.
+
+### Test Failures
+
+Tests are isolated and should pass independently. If tests fail, ensure no other process is using the same resources.

SPECS/project-setup.md

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+# Feature Spec: Project Setup and Documentation
+
+## Goal
+- Establish a clean, maintainable project structure
+- Provide clear documentation for running the application and tests
+- Enable easy local development and testing
+
+## Scope
+- In:
+  - Project directory structure
+  - Dependency management (requirements.txt)
+  - Configuration management
+  - Run instructions documentation
+  - Development setup guide
+- Out:
+  - Docker containerization
+  - CI/CD pipeline configuration
+  - Production deployment guides
+
+## Requirements
+- Python 3.9+ compatibility
+- Virtual environment support
+- Clear separation of concerns (app, tests, specs)
+- No hardcoded secrets or credentials
+
+## Project Structure
+```
+/
+├── SPECS/              # Feature specifications
+├── app/                # Application source code
+│   ├── __init__.py
+│   ├── main.py         # FastAPI application entry
+│   ├── models.py       # Pydantic models
+│   ├── storage.py      # Data persistence layer
+│   └── routers/
+│       └── tasks.py    # Task endpoints
+├── tests/              # Test suite
+│   ├── __init__.py
+│   ├── conftest.py     # Test fixtures
+│   ├── test_models.py
+│   └── test_tasks.py
+├── requirements.txt    # Python dependencies
+├── README.md           # Project documentation
+├── RULES.md            # Development rules
+├── TODO.md             # Task tracking
+└── SETUP.md            # Setup and run instructions
+```
+
+## Acceptance Criteria
+- [x] Application runs with `uvicorn app.main:app`
+- [x] Tests run with `pytest`
+- [x] Dependencies install with `pip install -r requirements.txt`
+- [x] SETUP.md contains complete run instructions
+- [x] No secrets or credentials in repository
+- [x] Project structure is clean and logical

SPECS/task-management-api.md

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+# Feature Spec: Task Management API
+
+## Goal
+- Provide a RESTful API for managing tasks with full CRUD operations
+- Enable users to organize, track, and filter tasks by status and priority
+- Persist data in-memory with optional JSON file storage
+
+## Scope
+- In:
+  - Create, read, update, delete tasks
+  - List all tasks with filtering by status and priority
+  - Search tasks by title or description
+  - Data persistence (in-memory with file backup)
+  - Input validation and error handling
+- Out:
+  - User authentication/authorization
+  - Real-time notifications
+  - Task assignments to multiple users
+  - File attachments
+
+## Requirements
+- FastAPI framework for API implementation
+- Pydantic models for request/response validation
+- In-memory storage with JSON file persistence option
+- RESTful endpoints following standard conventions
+- Proper HTTP status codes and error responses
+
+## Data Model
+```
+Task:
+  - id: string (UUID)
+  - title: string (required, 1-200 chars)
+  - description: string (optional, max 2000 chars)
+  - status: enum ["pending", "in_progress", "completed"]
+  - priority: enum ["low", "medium", "high"]
+  - created_at: datetime
+  - updated_at: datetime
+```
+
+## API Endpoints
+- POST /api/tasks - Create a new task
+- GET /api/tasks - List all tasks (with optional filters)
+- GET /api/tasks/{id} - Get a specific task
+- PUT /api/tasks/{id} - Update a task
+- DELETE /api/tasks/{id} - Delete a task
+- GET /api/tasks/search - Search tasks by keyword
+
+## Acceptance Criteria
+- [x] POST /api/tasks creates a task and returns 201 with the created task
+- [x] POST /api/tasks returns 422 for invalid input (missing title, invalid status)
+- [x] GET /api/tasks returns all tasks with 200 status
+- [x] GET /api/tasks?status=pending filters tasks by status
+- [x] GET /api/tasks?priority=high filters tasks by priority
+- [x] GET /api/tasks/{id} returns 200 with task details
+- [x] GET /api/tasks/{id} returns 404 for non-existent task
+- [x] PUT /api/tasks/{id} updates task and returns 200
+- [x] PUT /api/tasks/{id} returns 404 for non-existent task
+- [x] DELETE /api/tasks/{id} removes task and returns 204
+- [x] DELETE /api/tasks/{id} returns 404 for non-existent task
+- [x] GET /api/tasks/search?q=keyword returns matching tasks
+- [x] All timestamps are automatically managed
+- [x] API returns proper JSON error responses

SPECS/testing-framework.md

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+# Feature Spec: Testing Framework
+
+## Goal
+- Comprehensive test suite for the Task Management API
+- Validate all endpoints, edge cases, and error scenarios
+- Ensure tests can run locally with simple commands
+
+## Scope
+- In:
+  - Unit tests for data models and validation
+  - Integration tests for API endpoints
+  - Edge case coverage (empty inputs, boundary values)
+  - Error scenario testing (404, 422 responses)
+  - Test fixtures and factories
+- Out:
+  - Performance/load testing
+  - Security penetration testing
+  - UI/E2E browser testing
+
+## Requirements
+- pytest as the testing framework
+- pytest-asyncio for async test support
+- httpx for API testing (TestClient alternative)
+- Test isolation (clean state between tests)
+- Clear test naming conventions
+- Coverage reporting
+
+## Test Categories
+1. **Model Tests**: Validate Pydantic models and data validation
+2. **CRUD Tests**: Test create, read, update, delete operations
+3. **Filter Tests**: Test query parameter filtering
+4. **Search Tests**: Test search functionality
+5. **Error Tests**: Test error responses and edge cases
+
+## Acceptance Criteria
+- [x] All tests pass with `pytest` command
+- [x] Test coverage includes all API endpoints
+- [x] Tests cover happy path and error scenarios
+- [x] Tests are isolated and can run in any order
+- [x] Test output is clear and informative
+- [x] Coverage report is generated (92% coverage achieved)

TODO.md

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 # TODO
 
+## Completed
+- [x] Project setup and structure
+- [x] Task Management API implementation
+- [x] CRUD operations (Create, Read, Update, Delete)
+- [x] Task filtering by status and priority
+- [x] Task search functionality
+- [x] Comprehensive test suite
+- [x] Documentation
+
 ## Refactor Proposals
-- 
+- Consider adding database persistence (PostgreSQL/SQLite) for production use
+- Add pagination for large task lists
 
 ## New Feature Proposals
-- 
+- Task due dates and reminders
+- Task categories/tags
+- Bulk operations (delete multiple, update multiple)
+- Task history/audit log

app/__init__.py

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+"""Task Management API - Application Package"""