Responsive End-to-End Testing

1. Introduction

Responsive End-to-End (E2E) Testing ensures that web applications function correctly across various devices and screen sizes. This lesson focuses on using popular frameworks like Cypress and Playwright for responsive E2E testing.

2. Key Concepts

• **E2E Testing**: Testing the complete flow of an application from start to finish.
• **Responsive Design**: A design that adapts to different screen sizes and orientations.
• **Viewport**: The visible area of a web page on a device.

3. Setup

To begin responsive E2E testing, follow these steps:

1. Install Cypress or Playwright in your project:

npm install cypress

npm install playwright

2. Configure the testing framework:

// cypress.json
{
    "viewportWidth": 1280,
    "viewportHeight": 720
}

// playwright.config.js
module.exports = {
    use: {
        viewport: { width: 1280, height: 720 }
    }
};

3. Write tests for different screen sizes:

// Cypress Example
describe('Responsive Tests', () => {
    it('should display correctly on mobile', () => {
        cy.viewport('iphone-6');
        cy.visit('https://example.com');
        cy.get('h1').should('be.visible');
    });
});

// Playwright Example
const { chromium } = require('playwright');
(async () => {
    const browser = await chromium.launch();
    const context = await browser.newContext({ viewport: { width: 375, height: 667 } });
    const page = await context.newPage();
    await page.goto('https://example.com');
    await page.click('h1');
    await browser.close();
})();

4. Best Practices

Adhere to the following practices for effective responsive E2E testing:

• Test on multiple devices, including tablets and smartphones.
• Use automated testing to cover various screen sizes efficiently.
• Utilize browser developer tools for simulating different devices.
• Regularly update your tests to align with UI changes.

5. FAQ