Start with the checks people repeat before release.

A small team does not need a hundred end-to-end tests to get useful protection. Write down the actions someone performs before shipping: create an account, verify email, complete the main task, pay, invite a teammate, or change a plan. Mark which tasks affect revenue, trust, or access, and which ones change often. That list is your first test map.

Measure the current manual cost and the usual failure point. If checkout takes ten minutes to verify and a missing callback can leave a paid account locked out, it deserves an automated check before a low-risk settings page. The goal is a short list that catches consequential regressions while the author still remembers the change.

TASK

Protect the flow that pays

Use the same account, input, and success condition for each option.

shared test question
SETUP

Compare the boundary

Look at authoring, service state, environments, and maintenance—not just the first green run.

tradeoffs visible
DECISION

Keep the result you can repeat

Choose the tool that leaves your team with a result it can inspect and run again.

review with context
Compare setup against one browser taskComparison guides become useful when one test task exposes setup, maintenance, and review tradeoffs.

Write an outcome another person can verify.

“Checkout works” is too vague to review. “A new account pays for Pro, sees the order number, and can open the Pro workspace exactly once” gives the test a subject, action, and result. Include the downstream state when the customer task crosses a service boundary.

Code example
test('paid account can open Pro workspace', async ({ page }) => {
  await signup(page, testUser);
  await verifyEmail(page, testUser);
  await page.getByRole('link', { name: 'Plans' }).click();
  await page.getByRole('button', { name: 'Choose Pro' }).click();
  await completeTestPayment(page);
  await expect(page.getByText(/Order number/)).toBeVisible();
  await expect(page.getByRole('link', { name: 'Pro workspace' })).toBeVisible();
});

The helper names above belong to the project that owns the app. Keep the assertion tied to a customer-visible outcome and add a service or database check where the browser cannot see the complete handoff.

Make data and service state disposable.

Use a unique test identity, a reachable preview or local URL, and a clean starting state. A test that needs one engineer to delete yesterday’s order before it passes is not ready for CI. For payments, email, SMS, authentication, or storage, use a provider test environment or a supported clone. Molar’s clone catalog lists the implemented operations; it does not promise complete vendor parity.

When a test creates state, name it so a failure can be found quickly. Keep credentials in the CI secret store. If a service supports snapshots or reset, verify the reset before rerunning. Parallel runs should not share a user, inbox, payment record, or object path unless the test is specifically checking shared access.

Promote one stable check into CI.

Run the same scenario locally, in a preview environment, and in CI before making it required. Molar’s documented CLI path can start a browser verification such as:

Code example
molar verify "the login form is visible" \
  --url http://localhost:3000 \
  --json

Read the status and captured screenshot, fix the app when it fails, and rerun from the same setup. Once a check is stable, connect it to the repository policy your team uses. Do not hide a flaky check behind retries and call it reliable; record the flake, assign an owner, and decide whether it should block while it is repaired.

Keep failures actionable.

A small team cannot afford a red build that only says “timeout.” Retain the failed step, URL or target, assertion, screenshot, and relevant request or service identifier. The author should be able to answer whether the app broke, the test account was missing, or the dependent service was unavailable.

When a failure needs a decision, state it in the review: fix the app, update the expected behavior, or improve the test setup. Never weaken an assertion just to make the check green. Keep scheduled checks separate from merge checks when they need longer setup or production access.

Expand from escaped bugs and repeated work.

After the first check is useful, add the next branch based on a real gap: a declined payment, expired code, missing receipt, revoked invitation, or callback delivered twice. Keep existing unit, API, Playwright, or Cypress tests that already serve the team. Browser agents and service clones can fill gaps when a maintained scripted test is expensive to author, but generated export and clean replay remain under beta validation.

See the required-check guide, test data guide, or Molar for small teams. What you can test depends on your app, test accounts, environment and the supported integrations.