e2e-testing

E2E Testing

Playwright Test against the real application — real server, real browser, real data.

Conventions

• Tests live in e2e/ at the project root, NOT co-located with source
• Authenticated tests: e2e/flow-name.spec.ts — run with saved session automatically
• Unauthenticated tests: e2e/flow-name.unauth.spec.ts — fresh browser, no session
• Run with bun run e2e
• Test data lives in e2e/seeds/ as JSON files
• Import test from ./utils (shared fixture), expect from @playwright/test

import { expect } from "@playwright/test";
import { test } from "./utils";

The shared test fixture waits for [data-hydrated] after every page.goto() — buttons and handlers are ready immediately.

Playwright API

API	Use
page.goto("/path")	Navigate to URL
page.getByRole("button", { name })	Query by ARIA role
page.getByText("text")	Query by text content
page.getByLabel("label")	Query by form label
locator.click()	Click interaction
locator.fill("value")	Type into input
expect(page).toHaveURL(pattern)	Assert current URL
expect(locator).toBeVisible()	Assert element visible
page.waitForURL(pattern)	Wait for navigation
page.context().storageState()	Save auth state

E2E vs Component Test

Scenario	Test type
Multi-step user flow across pages	E2E
Authentication and authorization	E2E
CRUD lifecycle	E2E
API integration across pages	E2E
Isolated UI component behavior	Component
Form validation feedback	Component
Component state management	Component

Rule of thumb: involves chained steps across the real app → E2E. Tests isolated UI behavior → component test.

Examples

See examples/ for complete test examples by pattern:

Example	When to use
examples/navigation.md	Page transitions, link clicks, URL assertions
examples/form-submission.md	Form fills, submissions, validation
examples/crud-flow.md	Create, edit, delete lifecycle
examples/auth-persistence.md	Login setup, session reuse, unauthenticated tests

Acceptance Checklist

• Test lives in e2e/ directory
• Uses correct extension: .spec.ts (authenticated) or .unauth.spec.ts (unauthenticated)
• Imports test from ./utils, expect from @playwright/test
• Tests a real user flow, not isolated component behavior
• Uses seed data from e2e/seeds/ when needed
• No manual hydration waits (fixture handles it)
• Tests behavior, not implementation details