Build a Testing Agent
Learn how to create a coding assistant that automatically generates unit tests and integration tests with the Autohand Code Agent SDK. Available in TypeScript, Python, Java, Go, Swift, and Rust.
In this tutorial, you'll build a testing coding assistant that reads source code, understands its functionality, and automatically generates comprehensive unit tests. This demonstrates how to use the Agent SDK for automated testing.
- Completed Code Reviewer Agent
- Node.js 16+ (for TypeScript), Python 3.10+ (for Python), Java 11+ (for Java), Go 1.16+ (for Go), Swift 5.5+ (for Swift), or Rust 1.60+ (for Rust)
- SDK installed for your chosen language
- API key from your LLM provider (set as
AUTOHAND_API_KEY)
What You'll Build
A testing coding assistant that:
- Reads source code files
- Understands function behavior and edge cases
- Generates unit tests with assertions
- Covers edge cases and error conditions
- Runs tests and reports results
- Supports multiple testing frameworks
Step 1: Create Sample Code
Create a sample code file to test in your chosen language:
Step 2: Create Testing Agent
Create an agent with test generation capabilities in your chosen language:
Step 3: Generate Tests
Run the test generator agent on your sample code in your chosen language:
Key Concepts
The agent reads and analyzes source code to understand function behavior.
Tests cover normal cases, edge cases, and error conditions.
Using WRITE_FILE to create comprehensive test files.
Using BASH to run tests and report results.
Complete Example
Here's the complete example with cleanup:
Real-World Applications
This pattern can be applied to:
- Test automation: Auto-generate tests for new code
- Regression testing: Ensure code changes don't break existing functionality
- Code review: Generate tests alongside code reviews
- CI/CD integration: Automatically test code before deployment
- Legacy code testing: Add tests to untested legacy codebases