fix-pw-spec

Testing & Quality

Fix a failing Playwright spec by analyzing error output, identifying the root cause in the test code, and applying corrections. Use when a Playwright test fails due to wrong selectors, bad waits, incorrect assertions, or code errors. Trigger phrases: "fix this playwright test", "this spec is failing", "playwright test broken", "fix the flaky test".

QUICK START

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Fix Failing Playwright Spec

When to Use

This skill fixes test code bugs — not product bugs. Use it when:

A spec you wrote (or someone else wrote) fails due to selectors, waits, or assertion logic
The product behavior is correct but the test doesn't match it
Playwright reports timeouts, strict mode violations, or wrong expected values

If the product itself is broken, use diagnose-pw-failure instead.

Step 1 — Gather Failure Context

Read these three things:

The Playwright error output from the terminal (the test run output)
The spec file that failed
The trace or screenshot if available:
- Traces: app/client/playwright/results/<test-path>/trace.zip
- Screenshots: app/client/playwright/results/<test-path>/*.png

Step 2 — Classify the Error

Error pattern	Root cause	Fix
`Timeout waiting for locator("...")`	Selector doesn't match any element	Inspect the actual page; update selector
`strict mode violation: locator resolved to N elements`	Locator too broad	Add `.first()`, `.nth()`, or refine with chained locators
`expect(received).toHaveText("X")` received `"Y"`	Wrong expected value OR wrong element	Verify which element you're targeting; update expected value if test data changed
`Target closed` / `page.goto: Navigation failed`	Page navigated away before action completed	Add `waitForResponse` or `waitForURL` before the action
`locator.click: Element is not visible`	Element exists but hidden (behind modal, off-screen)	Wait for the right state, scroll into view, or close blocking elements
`Cannot find module` / TypeScript error	Import path wrong or missing export	Fix the import path; check that POM/helper exports the symbol
`ECONNREFUSED` / `net::ERR_*`	Not a spec bug — deployment issue	Stop. This is not fixable in the spec.

Step 3 — Fix Using Conventions

When fixing, follow the project conventions (from .cursor/rules/playwright.mdc):

Selector fixes

Prefer this priority order when replacing a broken selector:

page.getByRole("button", { name: /submit/i }) — best
page.getByPlaceholder("Search...") — for inputs without proper label association
page.getByTestId("my-element") — explicit contract
page.locator(SELECTORS.widgetInDeployed("text")) — Appsmith widget selectors from constants
CSS selector with comment — last resort only

Do not: Guess selectors. If unsure what's on the page, add a temporary await page.pause() or read the component source to find the actual DOM structure.

Wait fixes

Replace any hard waits or networkidle with specific conditions:

// Instead of waitForTimeout or networkidle, wait for the element:
await expect(page.getByRole("heading", { name: "Dashboard" })).toBeVisible();

// For mutations, wait for the API response:
const response = page.waitForResponse(r => r.url().includes(API.actionsExecute));
await page.getByRole("button", { name: "Save" }).click();
await response;

Assertion fixes

Ensure all assertions use the auto-retrying form:

// WRONG — non-retrying
expect(await locator.textContent()).toBe("value");

// RIGHT — auto-retrying
await expect(locator).toHaveText("value");

Step 4 — Re-run and Verify

After fixing, re-run the specific test:

cd app/client && npx playwright test <spec-file> --project=<project>

If it still fails, go back to Step 2 with the new error output.

Budget: Max 3 fix attempts per failure. After 3, either:

The spec is fundamentally wrong (rewrite from scratch)
The product has a bug (switch to diagnose-pw-failure)

Step 5 — Validate Fix Quality

Before declaring the fix done, check:

No networkidle introduced
No waitForTimeout introduced
No hardcoded API URLs or CSS selectors
Assertions use auto-retrying expect
No unused imports left behind
Run npx eslint <file> --ext .ts clean

Output

Summarize what was wrong and what was fixed:

## Spec Fix Summary

**File**: playwright/tests/sanity/widgets/table-filter.spec.ts
**Attempts**: 2

### Fix 1
- **Error**: Timeout waiting for locator `getByRole("button", { name: "Filter" })`
- **Cause**: Button text is "Add Filter", not "Filter"
- **Fix**: Updated to `getByRole("button", { name: /add filter/i })`

### Fix 2
- **Error**: strict mode violation on `.first()` table row
- **Cause**: Filter hadn't applied yet when assertion ran
- **Fix**: Added `waitForResponse` on the execute API before asserting row content

**Result**: PASS