test-framework-migration-skill

Test Framework Migration Skill

When to Use

Use this skill when you need 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...

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.$", "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:

1. Locators — Convert using the API mapping table (e.g. By.id("x") → page.getByRole(...) or page.locator('#x')).
2. Waits — Convert wait strategy (explicit wait / auto-wait / cy.should).
3. Actions — Map click, type, select, etc.
4. Assertions — Map to target's assertion style.
5. Lifecycle — Adjust setup/teardown (driver vs page, launch vs connect).
6. 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:

1. Ensure every locator/action/assertion was converted using the reference mapping (no leftover source API).
2. Ensure lifecycle (setup/teardown) matches target framework.
3. If target is Playwright: use auto-wait assertions (expect(locator).toBeVisible()), not raw waitForTimeout.
4. If target is Cypress: no async/await with cy commands; use chain style.
5. 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

Limitations

• Use this skill only when the task clearly matches its upstream source and local project context.
• Verify commands, generated code, dependencies, credentials, and external service behavior before applying changes.
• Do not treat examples as a substitute for environment-specific tests, security review, or user approval for destructive or costly actions.