new-e2e-test

Testing & Quality

Create a Playwright E2E test with auth fixture, cleanup, accessibility checks, and error monitoring

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How to use this skill

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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/testing/new-e2e-test/SKILL.md

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New E2E Test Runbook

See e2e/CLAUDE.md for full test standards and failure protocol.

Where to Put Tests

Category	Directory	Auth Required	Timeout
Public pages	`e2e/public/`	No	30s
Authenticated features	`e2e/authenticated/`	Yes (storageState)	30s
Long flows (bank connect)	`e2e/core-loop/`	Yes (storageState)	300s

Add to existing spec files when the feature fits an existing category. Create new spec only for genuinely new domains.

Test Template

import { test, expect } from "@playwright/test";

test.describe("<Feature Name>", () => {
  const pageErrors: Error[] = [];

  test.beforeEach(async ({ page }) => {
    pageErrors.length = 0;
    page.on("pageerror", (error) => pageErrors.push(error));
  });

  test.afterEach(async () => {
    expect(pageErrors).toHaveLength(0);
  });

  test("should do the thing", async ({ page }) => {
    await page.goto("/path");
    await expect(page.getByRole("heading", { name: "Title" })).toBeVisible();

    // Interact
    await page.getByRole("button", { name: "Action" }).click();

    // Verify
    await expect(page.getByText("Success")).toBeVisible();
  });
});

Key Patterns

Selectors (prefer accessibility)

// Good
page.getByRole("button", { name: "Save" })
page.getByLabel("Email")
page.getByText("Success")

// Bad
page.locator("#save-btn")
page.locator(".success-message")

Cleanup (required for data-creating tests)

test.afterAll(async () => {
  // afterAll does NOT receive the page fixture — use API or DB cleanup
  // Example: call a test cleanup API endpoint or use a test utility
  // await fetch(`${baseURL}/api/test/cleanup`, { method: 'POST' });
  // Free plan allows only 1 property — cleanup is critical
});

Auth

Tests in e2e/authenticated/ and e2e/core-loop/ automatically get auth via storageState configured in playwright.config.ts. No manual login needed.

Checklist

Uses page.on('pageerror') to catch uncaught exceptions
Accessibility-first selectors (getByRole, getByLabel, getByText)
Cleans up created data in afterAll
Added to existing spec file if feature fits
Respects free plan limits (1 property max)
No hardcoded credentials