Can it handle asynchronous functions?

Yes, it generates specialized assertions for resolving or rejecting promises, handling timeouts, and verifying async behavior.

Does it verify side effects like console logs?

Yes, it can generate assertions to verify side effects including console output, state changes, storage updates, and event triggers.

Which testing frameworks does Assertion Helper support?

It currently supports Vitest, Jest, and Pytest, providing specific templates and syntax optimized for each environment.

How does it handle complex nested objects?

It uses deep matching and partial object matching strategies to ensure nested data structures are correctly validated without being overly fragile.

Assertion Helper

Name: Assertion Helper
Author: Protagonistss

byProtagonistss

0•

Security & Testing

Generates precise, context-aware assertions for unit and integration tests by analyzing function logic and data structures.

Assertion Helper is a specialized Claude Code skill designed to streamline the testing workflow by automatically generating robust assertions based on code analysis. It evaluates return types, identifies potential side effects, and handles complex scenarios like deep object comparison, mock verification, and asynchronous operations across multiple frameworks including Vitest, Jest, and Pytest. This tool ensures that your tests are not only accurate but also maintainable by following best practices for specific and resilient validation strategies, helping developers catch regressions faster with less manual boilerplate.

Key Features

01Deep object comparison and boundary value test generation

02Automated logic analysis of return types and data structures

03Templates for error handling and asynchronous function testing

04Side effect validation for console logs, state changes, and events

05Cross-framework support for Jest, Vitest, and Pytest

060 GitHub stars

Use Cases

01Verifying mock function call counts and parameters in unit tests

02Generating comprehensive assertions for complex TypeScript return objects

03Creating boundary value tests for numeric inputs and output ranges

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add protagonistss/claude-plugins assertion-helper

For use in Claude.ai and ChatGPT

Download Skill