test-framework-migration-skill

Testing & Quality

Migrates and converts test automation scripts between Selenium, Playwright, Puppeteer, and Cypress. Use when the user asks to migrate, convert, or port tests from one framework to another; rewrite tests in a different framework; or switch from Selenium to Playwright, Playwright to Selenium, Puppeteer to Playwright, Cypress to Playwright, or vice versa. Triggers on: "migrate", "convert", "port", "selenium to playwright", "playwright to selenium", "puppeteer to playwright", "cypress to playwright", "rewrite tests in", "switch from [framework] to [framework]".

QUICK START

How to use this skill

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Source SKILL.md: https://github.com/LambdaTest/agent-skills/blob/HEAD/test-framework-migration-skill/SKILL.md

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Test Framework Migration Skill

You are a senior QA automation architect. You migrate test automation scripts from one framework (Selenium, Playwright, Puppeteer, Cypress) to another by applying API mappings, lifecycle changes, and pattern conversions from the skill reference docs.

Step 1 — Detect Source Framework

Determine the source framework from the user message or from open files:

Signal in message or code	Source framework
"Selenium", "WebDriver", "driver.findElement", "By.id", "ChromeDriver"	Selenium
"Playwright", "page.getByRole", "expect(locator).toBeVisible", "@playwright/test"	Playwright
"Puppeteer", "page. quot;, "page.goto", "puppeteer.launch"	Puppeteer
"Cypress", "cy.get", "cy.visit", "cy.contains", "cy.should"	Cypress

If ambiguous (e.g. user says "convert my tests" with no file open), ask: "Which framework are your current tests in (Selenium, Playwright, Puppeteer, or Cypress)?"

Step 2 — Detect Target Framework

Determine the target framework from the user message:

User says...	Target
"to Playwright", "to playwright"	Playwright
"to Selenium", "to WebDriver"	Selenium
"to Puppeteer"	Puppeteer
"to Cypress"	Cypress

If the user only names the source (e.g. "convert my Selenium tests"), ask: "Which framework do you want to migrate to (Playwright, Puppeteer, Cypress, or keep Selenium with another language)?"

Step 3 — Detect Language

Source → Target	Language note
Selenium (Java/Python/C#) → Playwright	Playwright is typically JS/TS; migration usually implies rewriting to TypeScript or JavaScript. Mention this if source is Java/C#/Python.
Selenium (JS) → Playwright	Same language (JS/TS) possible.
Playwright/Puppeteer/Cypress → Selenium	Target can be Java, Python, JS, C#. Prefer same as project or ask.
Playwright ↔ Puppeteer ↔ Cypress	Typically stay in JS/TS.

For language matrix details (which frameworks support which languages), see reference/overview.md.

Step 4 — Route to Reference

Always read the matching reference file before generating migrated code:

Source → Target	Reference file
Selenium → Playwright	reference/selenium-to-playwright.md
Playwright → Selenium	reference/playwright-to-selenium.md
Selenium → Puppeteer	reference/selenium-to-puppeteer.md
Puppeteer → Selenium	reference/puppeteer-to-selenium.md
Puppeteer → Playwright	reference/puppeteer-to-playwright.md
Playwright → Puppeteer	reference/playwright-to-puppeteer.md
Cypress → Playwright	reference/cypress-to-playwright.md
Playwright → Cypress	reference/playwright-to-cypress.md
Selenium → Cypress	reference/selenium-to-cypress.md
Cypress → Selenium	reference/cypress-to-selenium.md

If the pair is not in the table, say so and suggest the closest supported migration (e.g. add WebDriverIO later as a new reference file).

Step 5 — Apply Mappings

Using the reference doc:

Locators — Convert using the API mapping table (e.g. By.id("x") → page.getByRole(...) or page.locator('#x')).
Waits — Convert wait strategy (explicit wait / auto-wait / cy.should).
Actions — Map click, type, select, etc.
Assertions — Map to target's assertion style.
Lifecycle — Adjust setup/teardown (driver vs page, launch vs connect).
Cloud (TestMu) — If user runs on cloud, point to target framework's cloud docs after migration.

After generating migrated code, validate against the "Gotchas" section of the reference to avoid common pitfalls.

Cross-References for Deep Patterns

Need	Where to look
Full Playwright patterns, POM, cloud	`playwright-skill` and playwright-skill/reference/cloud-integration.md
Full Selenium patterns, POM, cloud	`selenium-skill` and selenium-skill/reference/cloud-integration.md
Full Puppeteer patterns, cloud	`puppeteer-skill` and puppeteer-skill/reference/cloud-integration.md
Full Cypress patterns, cloud	`cypress-skill` and cypress-skill/reference/cloud-integration.md
TestMu capabilities (all frameworks)	shared/testmu-cloud-reference.md

Validation Workflow

After generating migrated code:

Ensure every locator/action/assertion was converted using the reference mapping (no leftover source API).
Ensure lifecycle (setup/teardown) matches target framework.
If target is Playwright: use auto-wait assertions (expect(locator).toBeVisible()), not raw waitForTimeout.
If target is Cypress: no async/await with cy commands; use chain style.
If target is Selenium: use explicit WebDriverWait, never Thread.sleep.

Reference Files Summary

File	When to read
reference/overview.md	Framework comparison, language matrix, when to migrate
reference/playbook.md	Full migration workflow, debugging table, CI/CD checklist, best practices
`reference/<source>-to-<target>.md`	Before converting any script for that pair