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Playwright E2E — Complete Guide

Playwright E2E — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of Next.js Tutorial on Toolliyo Academy.

8 min read Updated 6/25/2026
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Next.js Tutorial (LearnHub) · Lesson 51 of 100

Playwright E2E

Beginner ✓ → Intermediate ✓ → Advanced → Professional

Advanced · 3 — Production skills · ~18 min read · Module 6: Advanced Routing

Introduction

This is advanced material: Playwright E2E. It is what teams use on live products. Read the example carefully and try changing one line at a time to see what happens. Playwright automates a real browser to click through your app like a user. E2E tests catch broken login flows and checkout paths that unit tests miss. LearnHub enrollment might work in isolation but fail when login → catalog → enroll spans three pages. E2E proves the full journey.

Advanced routing is optional on day one. Read this so you recognize the tools when LearnHub needs modals or parallel panels.

When will you use this?

Use advanced routing when one URL needs multiple panels, modals, or loading states.

  • Parallel routes show a video player and notes panel on the same lesson URL.
  • Intercepting routes open a course preview modal without leaving the catalog page.

Real-world: LearnHub LMS

The EdTech / LMS team building LearnHub LMS uses Playwright E2E to apply Playwright E2E when building course catalog, lesson player, and progress tracking. students and instructors never see the TypeScript files — they just get a fast, reliable course catalog, lesson player, and progress tracking.

Production-style code

// e2e/enroll.spec.ts
import { test, expect } from '@playwright/test';

test('student can open course catalog', async ({ page }) => {
  await page.goto('http://localhost:3000/courses');
  await expect(page.getByRole('heading', { name: /courses/i })).toBeVisible();
  await page.getByRole('link', { name: 'Next.js Fundamentals' }).click();
  await expect(page).toHaveURL(/courses\/nextjs-fundamentals/);
});

What happens in production: In LearnHub LMS, getting Playwright E2E right means students and instructors trust the course catalog, lesson player, and progress tracking every day.

Lesson example (start here)

Copy this smaller example first. Once it works, compare it with the real-world code above.

// e2e/enroll.spec.ts
import { test, expect } from '@playwright/test';

test('student can open course catalog', async ({ page }) => {
  await page.goto('http://localhost:3000/courses');
  await expect(page.getByRole('heading', { name: /courses/i })).toBeVisible();
  await page.getByRole('link', { name: 'Next.js Fundamentals' }).click();
  await expect(page).toHaveURL(/courses\/nextjs-fundamentals/);
});

Line-by-line walkthrough

CodeWhat it means
// e2e/enroll.spec.tsComment — notes for humans; the compiler ignores it.
import { test, expect } from '@playwright/test';Imports a module so you can use its exports in this file.
test('student can open course catalog', async ({ page }) => {Part of the Playwright E2E example — read it together with the lines before and after.
await page.goto('http://localhost:3000/courses');Part of the Playwright E2E example — read it together with the lines before and after.
await expect(page.getByRole('heading', { name: /courses/i })).toBeVisible();Part of the Playwright E2E example — read it together with the lines before and after.
await page.getByRole('link', { name: 'Next.js Fundamentals' }).click();Part of the Playwright E2E example — read it together with the lines before and after.
await expect(page).toHaveURL(/courses\/nextjs-fundamentals/);Part of the Playwright E2E example — read it together with the lines before and after.
});Closes a block started by { above.

How it works (big picture)

  • test opens a browser context, navigates, and asserts visible text and URLs.
  • Run against npm run dev in CI before deploy.

Do this on your computer

  1. Install @playwright/test and run npx playwright install.
  2. Add one spec for the course catalog flow.
  3. Run npx playwright test.
  4. Break a link on purpose and see the test fail.
  5. Read the real-world section and name which part of LearnHub uses this topic.
  6. Run the example locally with npm run dev and confirm the same behavior.
  7. Change one value in the example (route, text, or course id) and predict what will happen before you save.

Experiments — try changing this

  • Change a string or route in the example and save — watch the browser update.
  • Break the code on purpose (remove a bracket), read the error overlay, then fix it.
  • Change the API URL or course id and see how the page data changes.
  • Use npm run dev while editing Playwright E2E — the page hot-reloads on save.

Remember

E2E simulates real users. Playwright works well with Next.js on Vercel CI. Start with one critical user journey.

Common questions

Playwright vs Cypress?

Both work; Playwright has strong multi-browser support and is common in new Next.js repos.

How long should I spend on Playwright E2E?

Until you can explain it in your own words and run the example without looking at the answer. Beginners often need 30–60 minutes per new concept; setup lessons may take one afternoon.

What if I get stuck on Playwright E2E?

Re-read the line-by-line walkthrough, check the terminal and browser overlay for errors, and compare your code character-by-character with the example. Search the exact error text — someone else had it too.

Where is Playwright E2E used in real jobs?

See the real-world section above — the same pattern appears in LMS, e-commerce, SaaS, and dashboards. Interviewers ask you to explain it using one concrete example.

Next.js Tutorial
Course syllabus
Start Here Next.js Complete Beginner's Guide
Module 1: Next.js Foundations Introduction to Next.js — Complete Guide Installing Next.js — Complete Guide Understanding Project Structure — Complete Guide App Router Basics — Complete Guide Pages and Layouts — Complete Guide React Components in Next.js — Complete Guide Client Components — Complete Guide Server Components — Complete Guide Routing Fundamentals — Complete Guide Dynamic Routing — Complete Guide
Module 2: Layouts & Styling Nested Layouts — Complete Guide Navigation and Linking — Complete Guide Static Assets — Complete Guide CSS Modules — Complete Guide Tailwind CSS in Next.js — Complete Guide Data Fetching — Complete Guide Server Actions — Complete Guide Forms in Next.js — Complete Guide Form Validation — Complete Guide Authentication Basics — Complete Guide
Module 3: Data & Forms Middleware — Complete Guide API Route Handlers — Complete Guide Database Integration — Complete Guide File Upload — Complete Guide Image Optimization — Complete Guide Metadata and SEO — Complete Guide Performance Optimization — Complete Guide Deployment — Complete Guide E-Commerce App Project — Complete Guide SaaS Dashboard Project — Complete Guide
Module 4: Auth & APIs SSR vs SSG vs ISR — Complete Guide Streaming and Suspense — Complete Guide Loading and Error UI — Complete Guide Route Groups — Complete Guide Parallel Routes — Complete Guide Intercepting Routes — Complete Guide Edge Runtime — Complete Guide Caching in Next.js — Complete Guide Revalidating Data — Complete Guide TanStack Query in Next.js — Complete Guide
Module 5: SEO & Deploy NextAuth.js — Complete Guide Clerk Authentication — Complete Guide OAuth and Social Login — Complete Guide Protected Routes — Complete Guide Prisma ORM — Complete Guide MongoDB with Next.js — Complete Guide PostgreSQL with Next.js — Complete Guide Environment Variables — Complete Guide Unit Testing — Complete Guide Integration Testing — Complete Guide
Module 6: Advanced Routing Playwright E2E — Complete Guide CI/CD for Next.js — Complete Guide Internationalization — Complete Guide Accessibility — Complete Guide XSS and CSRF Protection — Complete Guide Security Headers — Complete Guide Rate Limiting — Complete Guide Structured Data — Complete Guide Sitemap and Robots — Complete Guide Zustand State — Complete Guide
Module 7: Auth & Database Redux Toolkit in Next.js — Complete Guide React Context Patterns — Complete Guide Monorepo with Turborepo — Complete Guide Docker for Next.js — Complete Guide Vercel Deployment — Complete Guide AWS Amplify — Complete Guide Azure Static Web Apps — Complete Guide Micro Frontends — Complete Guide Remix vs Next.js — Complete Guide Web Vitals Tuning — Complete Guide
Module 8: Quality & Security Font Optimization — Complete Guide Bundle Analysis — Complete Guide Blog Application Project — Complete Guide Student Portal Project — Complete Guide Job Portal Project — Complete Guide Hospital Portal Project — Complete Guide Food Delivery Frontend Project — Complete Guide Banking Dashboard Project — Complete Guide LMS Course Player Project — Complete Guide CRM Admin Project — Complete Guide
Module 9: Cloud & Scale Real-Time Chat Project — LearnHub Project Multi-Tenant SaaS Project — LearnHub Project Inventory Dashboard Project — LearnHub Project Travel Booking Project — LearnHub Project News Portal Project — LearnHub Project Portfolio Site Project — LearnHub Project Enterprise Architecture — LearnHub Project Clean Folder Structure — LearnHub Project API Design Patterns — LearnHub Project Error Handling Patterns — LearnHub Project
Module 10: Portfolio Projects Logging and Monitoring — LearnHub Project Stripe Payments — LearnHub Project Analytics and Observability — LearnHub Project Storybook with Next.js — LearnHub Project GraphQL with Next.js — LearnHub Project Content Security Policy — LearnHub Project Partial Prerendering — LearnHub Project Server Actions Security — LearnHub Project Production Checklist — LearnHub Project Next.js Career Roadmap — LearnHub Project
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