Test Specialist

Covers the full testing lifecycle for JavaScript and TypeScript projects, from writing unit tests with the AAA pattern to integration and E2E tests with Playwright. The systematic bug analysis framework is solid, walking you through reproduction, isolation, root cause, fix, and validation. It includes practical examples for catching race conditions, SQL injection, XSS vulnerabilities, and performance issues with parameterized tests. Ships with a Python script that scans your codebase to find untested files and prioritizes them by type. Good if you need structured testing methodology rather than just framework documentation, especially the security and edge case checklists that are easy to forget.

skills.sh installs: 904
GitHub stars: 467
last updated: Aug 21, 2026

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Install

$ npx -y skills add ailabs-393/ai-labs-claude-skills --skill test-specialist --agent claude-code

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Test Specialist

Overview

Apply systematic testing methodologies and debugging techniques to JavaScript/TypeScript applications. This skill provides comprehensive testing strategies, bug analysis frameworks, and automated tools for identifying coverage gaps and untested code.

Core Capabilities

1. Writing Test Cases

Write comprehensive tests covering unit, integration, and end-to-end scenarios.

Unit Testing Approach

Structure tests using the AAA pattern (Arrange-Act-Assert):

describe('ExpenseCalculator', () => {
  describe('calculateTotal', () => {
    test('sums expense amounts correctly', () => {
      // Arrange
      const expenses = [
        { amount: 100, category: 'food' },
        { amount: 50, category: 'transport' },
        { amount: 25, category: 'entertainment' }
      ];

      // Act
      const total = calculateTotal(expenses);

      // Assert
      expect(total).toBe(175);
    });

    test('handles empty expense list', () => {
      expect(calculateTotal([])).toBe(0);
    });

SKILL.md on GitHub