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Implementing Page Object Model in Playwright

Page Object Model (POM) is a design pattern that helps you organize your code. It makes your code more readable, maintainable, and reusable. In Playwright, you can implement POM by creating a class for each page of your application.

Defining Locators and Helper Methods

First, you need to define locators and helper methods for each page. Locators are used to find elements on the page, and helper methods are used to perform actions on those elements.

For example, if you have a "user" page, you can create a UserPage class that extends the Page class provided by Playwright. In this class, you can define locators for all the elements on the user page, like buttons or input fields.

class UserPage extends Page {
  // Define locators
  private readonly submitButton = this.page.locator('#submit');
  private readonly usernameField = this.page.locator('#username');

  // Define helper methods
  async submitForm() {
    await this.submitButton.click();
  }

  async enterUsername(username: string) {
    await this.usernameField.fill(username);
  }
}

Declaring Types of Fixtures

It's also important to declare types of fixtures when implementing POM in Playwright. This ensures that fixtures are properly defined and used throughout your tests.

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

test('some test', async ({ page }) => {
  const userPage = new UserPage(page);
  await userPage.enterUsername('ray');
  await userPage.submitForm();
  // ...
});

By implementing POM in Playwright, you can make your code more organized and easier to maintain over time. For more tips on writing efficient Playwright test scripts, check out this blog post.