Writing Page Interaction Tests
Click, fill forms, and assert DOM state using Playwright's powerful API.
Writing Page Interaction Tests is a free Sveltejs Academy lesson on CoddyKit. This is lesson 2 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Sveltejs Academy learning path, and your progress syncs across the web and the CoddyKit app. The Sveltejs Academy course includes 4 lessons in total.
Basic Test
Each test imports test and expect from Playwright.
import { test, expect } from "@playwright/test";
test("homepage", async ({ page }) => {
await page.goto("/");
await expect(page).toHaveTitle(/My App/);
});Navigation
Use page.goto(url) to visit pages and page.click() to navigate via clicks.
Selectors
Use role, text, or test-id locators for resilient selectors.
await page.getByRole("button", { name: "Save" }).click();Filling Forms
Use fill, type, check, selectOption.
await page.getByLabel("Email").fill("user@example.com");Assertions
Use expect(locator) for retrying assertions like toBeVisible, toHaveText.
Async/Await
Every action is async. Always await.
Auto-Waiting
Playwright auto-waits for elements to be actionable. Fewer flaky tests.
Screenshots
Take screenshots on failure or as part of visual regression.
await page.screenshot({ path: "result.png" });Headless Mode
Tests run headless by default. Toggle headed mode with --headed to watch.
Parallel Tests
Playwright runs tests in parallel per worker. Use isolated state (cookies, storage).
Use Page Object Model
For large suites, encapsulate page-specific selectors and actions in classes.
Quick Check
Which locator type is most resilient?
Recap
Write interaction tests with goto, click, fill, and role-based locators. Use expect for retrying assertions.
Learn HTML with an AI tutor — free
Write and run real code in your browser, get instant help from a 24/7 AI tutor, and pick up where you left off on the web or in the app.
- Courses
- 41
- Lessons
- 163
Frequently Asked Questions
Is the “Writing Page Interaction Tests” lesson free?
Yes — the full text of “Writing Page Interaction Tests” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Sveltejs Academy course, upgrade to CoddyKit PRO. The Sveltejs Academy course includes 4 lessons in total.
What will I learn in “Writing Page Interaction Tests”?
Click, fill forms, and assert DOM state using Playwright's powerful API. You practise Sveltejs Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Sveltejs Academy?
No prior experience is required. Sveltejs Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 2 of 4.
How long does the “Writing Page Interaction Tests” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Sveltejs Academy lesson?
Yes. Every Sveltejs Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Playwright Setup in SvelteKit
- Writing Page Interaction Tests
- Testing Forms and Navigation
- CI Integration