Real Playwright tests, written for you.
Cairn turns each mapped flow into a production-grade Playwright spec — auth-aware, resilient by default, and regenerated when your code changes. No test code to write or maintain.
A mapped flow becomes a real Playwright spec.
Cairn writes the same TypeScript test your team would — with the hardened defaults that separate a stable suite from a flaky one baked in.
Sign in
/login- 1Go to /login
- 2Fill email + password
- 3Click "Sign in"
- 4Expect the dashboard
E2E tests are expensive to write — and they rot.
A good end-to-end test is one of the most valuable artifacts a team can own, and one of the most expensive. Someone has to know the flow, write the Playwright code, wire up authentication, choose locators that won't shatter on the next refactor, and tune the waits so the test isn't flaky. Then they have to do it again every time the UI changes.
So most teams write a handful of E2E tests, watch them go flaky, and quietly stop trusting them. The suite that was supposed to catch regressions becomes a source of noise everyone learns to ignore — and the bugs it was meant to catch ship anyway.
Test generation removes both the writing and the maintenance. Cairn turns each mapped flow into a real Playwright spec with the hardened defaults teams usually learn the hard way, and regenerates it when the code changes — so the suite stays trustworthy instead of decaying.
From flow to spec, automatically.
Generation starts from a flow Cairn already mapped, so the test follows the journey a user actually takes.
Start from a mapped flow
Generation begins with a flow Cairn already discovered — its real steps, routes, and the components it touches — so the test mirrors how the product is actually used.
Write a real Playwright spec
Cairn emits standard Playwright TypeScript: the same tests your team would write by hand, runnable with the tooling you already know. There's no black-box DSL between you and your tests.
Bake in resilience
Every spec ships with generous, intentional timeouts, role- and text-based locators, and waits tied to real network and load state — the defaults that separate a stable suite from a flaky one.
Keep it in sync
When a merge changes the flow, Cairn regenerates the spec to match. Tests follow the product instead of rotting — new pages get new specs, and removed pages have theirs retired.
Written the way an expert would write them.
The difference between a test suite you trust and one you ignore is in the details — and Cairn gets them right by default.
Auth-aware by default
Authenticated flows seed a session via cookie injection in a beforeEach, so each spec starts already logged in — and Cairn never generates a sign-out that would invalidate the shared session.
Resilient, not flaky
Generous waits tied to real load state, role-based locators that survive CSS refactors, and an automatic retry on a fresh worker before any failure is reported.
Self-healing
When a flow changes, its spec is regenerated to match — so your tests track the product instead of drifting out of date and going red for the wrong reasons.
And because the output is plain Playwright, you own every line. You can read exactly what is being asserted, edit a spec by hand, or drop it into your own pipeline. Generation gives you the speed of automation without the opacity of a closed test runner.
Frequently asked questions
Standard Playwright specs — the same TypeScript tests your team would write by hand, runnable with the Playwright tooling you already know. Each mapped flow becomes one spec that drives a real browser through the journey and asserts on what the user should see.
Authenticated flows seed a session directly via Playwright's cookie injection in a beforeEach hook, so the test starts already logged in without re-running a fragile login UI on every spec. Cairn never generates a sign-out step, because signing out would invalidate the shared session the rest of the suite depends on.
Cairn bakes in the defaults teams usually learn the hard way: generous timeouts (60s for elements, longer for streaming UIs), role- and text-based locators instead of brittle CSS selectors, and waits tied to real network and load state rather than arbitrary sleeps. Transient failures are also retried on a fresh worker before anything is reported.
When a merge changes a flow, Cairn regenerates that flow's spec to match the new code — so the test follows the product instead of rotting. New pages get brand-new specs automatically; removed pages have their specs retired.
Yes. The specs are plain Playwright — you can read every line, tweak them, and understand exactly what is being asserted. There is no black-box DSL between you and your tests.
Cairn runs them for you against your deployed app — on every merge and on a schedule — recording video and a full trace for each run. You don't have to stand up or maintain a CI pipeline to get coverage.
Yes. Because generation starts from the mapped flow's real steps and routes, it handles multi-page journeys, forms, and conditional UI — driving the same sequence a user would and asserting the outcome at each meaningful point.
Explore more of Cairn
Put your tests on autopilot.
Connect a repo and watch Cairn map your flows, write the tests, and run them on every PR — in minutes.