How can you run Playwright tests in parallel to speed up execution?

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IHUB Talent stands out as the best institute for Playwright Testing Training in Hyderabad, offering a comprehensive, hands-on learning experience that prepares you for a successful career in test automation. Playwright, a cutting-edge testing framework for web applications, has gained immense popularity for its ability to handle modern web apps with speed and reliability. Our training program ensures that students gain expertise in Playwright for automated testing using JavaScript, TypeScript, and Python.

The course is meticulously designed to cover all aspects of Playwright Testing, starting from the fundamentals to advanced concepts. Students will learn how to set up and use Playwright for end-to-end testing, explore browser automation, and work with advanced tools like Playwright Inspector. Practical training on integrating Playwright with CI/CD pipelines and various testing frameworks such as Mocha, Jest, and others ensures that students are well-prepared for real-world automation challenges.

In Playwright, you can locate elements using a variety of methods, similar to Selenium. Playwright supports several ways to find elements on a web page, including CSS selectors, XPath, and text-based selectors. Here’s an overview of the main techniques to locate elements in Playwright, with examples.

In Playwright, the method page .wait For Selector() plays an important role in waiting for an element to appear (or become visible) on the page before interacting with it.

1. Use Playwright Test Runner

Playwright has a built-in test runner that supports parallel execution out of the box.

 2. Structure Your Tests Properly

Each test file runs in a separate worker by default, allowing parallelism.

 Steps to Enable Parallel Execution

a. Install Playwright Test Runner (if not already):

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npm install -D @playwright/test

b. Run tests (parallel by default):

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npx playwright test

This will run tests in parallel across files

 Customize Parallelism

In playwright.config.ts:

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import { defineConfig } from '@playwright/test';

export default defineConfig({

  workers: 4, // Number of parallel workers

});

You can also use the CLI flag:

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npx playwright test --workers=4

 Best Practices

Isolate tests: Avoid shared state between tests.

Use test fixtures: Helps manage setup/teardown cleanly.

Avoid global variables: Each test should be independent.

Read More

What is browser context in Playwright, and why is it useful?

What method checks if an element is visible?

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