Developer Tools · Self-healing test fixes

TestHealer

Redesign without breaking tests.

After a redesign, find every UI test selector that broke, the element it meant, and a verified fix as a diff. The same for API version bumps.

QA teams with large UI suitesSoftware agenciesIT services firms running testing for clients

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test-mender · example

$ test-mender ui tests --page checkout-after.html --before checkout-before.html
18 selector(s) in 4 file(s): 3 ok, 15 broken (14 with a confident fix), 2 brittle
 ✗ checkout.spec.ts:11  getByRole(role=button[name="Place order"])
     fix (high): role=button[name="Pay now"]
 ✗ test_checkout_selenium.py:7  By.XPATH(//button[@id='submit-btn'])
     fix (high): //*[@data-testid='place-order']

Real run on the sample checkout redesign included with the product (output shortened).

FixesUI selectors and API tests

VerifiesAgainst the old page

Runs onYour laptop, server or CI

OutputA reviewable diff

The problem

Every UI redesign or API version breaks hundreds of tests. Engineers spend days updating selectors by hand, or the suite gets switched off.

What it does

Playwright, Cypress, Selenium and Testing Library tests, in JS, TS, Python and Java

Finds what a broken selector meant from the old page, then the closest element on the new one

Proposes the most robust selector (test id, form name, role and name) and checks it matches exactly one element

Keeps your style: getByRole stays getByRole, By.ID stays By.ID

Flags brittle selectors that still work: nth-child, generated classes, absolute XPath

API tests: renamed paths, fields and status codes from two OpenAPI specs, applied to tests and Postman collections

Only confident fixes are written; you review a diff

How it works

Save the page before and after the change
Run it on your test folder
Review the diff and commit

Works with

PlaywrightCypressSeleniumOpenAPIPostman

Your data

Runs on your test suite locally.
Fixes arrive as diffs you review.
Nothing is committed for you.

Who it's for

QA teams with large UI suitesSoftware agenciesIT services firms running testing for clients

Questions

How does it know the right element?

It fingerprints the element the old selector found and locates the same element on the new page.

What about API tests?

It diffs the OpenAPI versions and rewrites the affected requests and Postman collections.

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