test-harness

What problem does it solve?

Transforms Python functions, classes, or modules into comprehensive, runnable pytest test suites so developers can validate behavior, guard refactors, and enforce coverage without manual, error-prone test writing.

Core Features & Use Cases

• Analyzes function signatures, dependency graphs, and complexity hotspots to enumerate happy path, boundary, error, and state tests.
• Designs scoped fixtures, conftest candidates, and teardown to ensure isolation and minimal flakiness.
• Produces mock strategies, patch boundaries, and async test patterns (pytest-asyncio) for code with external dependencies or coroutines.
• Use cases: generate tests for a changed function before a PR, scaffold parametrized tests for complex logic, or produce async test stubs for coroutine-based services.

Quick Start

Generate a standard pytest file for the function calculate_discount in sample_module.py and include happy path, boundary, and error tests.