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testing

Design and implement unit, component, API, and end-to-end tests.

Updated Jan 25, 2026
Search Tags:#unit tests#testing#e2e tests#jest#playwright#component tests#api tests
One-click install
npx skills add https://github.com/dhamija/claude-workflow-agents --skill testing-dhamija
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: testing
Source: https://github.com/dhamija/claude-workflow-agents/tree/main/templates/skills/testing
Command: npx skills add https://github.com/dhamija/claude-workflow-agents --skill testing-dhamija

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides structured guidance and concrete examples to help teams design, implement, and maintain comprehensive tests for software components, APIs, and features, reducing bugs and regression risk.

Core Features & Use Cases

  • Unit Tests: examples of testing individual functions and logic with Jest.
  • Component Tests (React): demonstrates testing React components using a library like Testing Library.
  • API Tests: examples of endpoint validation using tools like Supertest.
  • E2E Tests (Playwright): end-to-end user flow tests to verify full scenarios.
  • Use Case: ensure a feature is covered by unit through E2E tests before deployment.

Quick Start

Install dependencies and run the test suite to validate components, APIs, and workflows.

Frequently Asked Questions about testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write unit tests for JavaScript functions with Jest?▼

Unit tests with Jest validate individual functions by asserting expected outputs for given inputs. Jest provides a test runner, assertion library, and mocking utilities built-in, making it ideal for testing isolated logic before integration.

What's the best way to test React components?▼

Component tests verify React UI behavior by rendering components and simulating user interactions. Testing Library focuses on testing components as users do—querying by labels and roles rather than implementation details—ensuring tests remain resilient to refactors.

How do I test API endpoints?▼

API tests validate endpoint responses and status codes by making HTTP requests and asserting outcomes. Tools like Supertest let you write tests that send requests to your server and verify correct data, error handling, and status codes are returned.

Can I automate testing user flows end-to-end?▼

End-to-end tests with Playwright automate full user workflows across browsers, simulating real interactions like clicks and form submissions. E2E tests catch integration bugs that unit and component tests miss by validating the entire application stack together.

What testing strategy ensures high coverage before deployment?▼

A layered testing strategy combines unit tests for logic, component tests for UI, API tests for endpoints, and E2E tests for workflows. This progression catches bugs at each level—faster and cheaper in unit layers, with E2E covering critical user paths before release.

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