testing-strategy

Testing Strategy

Overview

Analyze the project context and recommend a comprehensive testing strategy. This skill selects appropriate frameworks, defines the testing pyramid, establishes coverage thresholds, and generates test configuration files. The goal is a repeatable, measurable testing foundation that the team can maintain.

Announce at start: "I'm using the testing-strategy skill to define the testing approach."

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Phase 1: Analyze Project

Goal: Understand the current stack, existing tests, and CI setup before recommending anything.

Actions

1. Identify the tech stack (language, framework, runtime)
2. Survey existing tests (what testing exists already?)
3. Review CI/CD pipeline (how do tests run?)
4. Measure current coverage levels
5. Map external dependencies (services, databases, APIs)

Discovery Commands

# Identify test files
find . -name "*.test.*" -o -name "*.spec.*" | head -30

# Check for test config
ls vitest.config.* jest.config.* pytest.ini pyproject.toml .mocharc.* 2>/dev/null

# Check current coverage
cat coverage/coverage-summary.json 2>/dev/null || echo "No coverage report found"

# Check CI config
cat .github/workflows/*.yml 2>/dev/null | head -50

STOP — Do NOT proceed to Phase 2 until:

• Tech stack is identified
• Existing test infrastructure is mapped
• CI pipeline status is known
• External dependencies are listed

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Phase 2: Recommend Testing Pyramid

Goal: Select frameworks and define the pyramid ratios.

Framework Selection Table

Stack	Unit	Integration	E2E
Node.js/TS	Vitest	Vitest + Supertest	Playwright
React/Next.js	Vitest + Testing Library	Vitest + MSW	Playwright/Cypress
Python	pytest	pytest + httpx	Playwright
Go	testing + testify	testing + testcontainers	Playwright
Rust	cargo test	cargo test + testcontainers	-
PHP/Laravel	Pest/PHPUnit	Pest + HTTP tests	Playwright/Dusk