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Playwright VS pytest

Compare Playwright VS pytest and see what are their differences

Playwright logo Playwright

Playwright is automation software for Chromium, Firefox, Webkit using the Node.js library having a single API in place.

pytest logo pytest

Javascript Testing Framework
  • Playwright Landing page
    Landing page //
    2023-06-22
  • pytest Landing page
    Landing page //
    2023-10-15

Playwright features and specs

  • Cross-Browser Testing
    Playwright supports testing on Chromium, Firefox, and WebKit, providing comprehensive coverage across different browsers, thus ensuring greater compatibility and a wider test reach.
  • Auto-Wait Mechanism
    Playwright automatically waits for elements to be actionable before performing interactions, reducing the need for explicit wait commands and helping to make tests more reliable and less flaky.
  • Headless Testing
    Playwright supports headless mode for all browsers, which allows for faster test execution and reduced resource consumption, making it ideal for continuous integration systems.
  • Context Isolation
    Playwright introduces the concept of browser contexts, which allows for isolated execution environments within a single browser instance. This enables parallel testing with reduced overhead.
  • Extensive API
    Playwright offers a wide range of APIs that cover user interactions, network interception, and browser automation, providing developers with powerful tools to create robust tests.
  • Network Interception
    Playwright can intercept and modify network requests and responses, allowing for advanced testing scenarios such as mocking APIs and simulating different network conditions.
  • Strong Documentation
    Playwright provides thorough and detailed documentation, making it easier for developers to learn and effectively utilize the framework.
  • Rich Debugging Features
    The framework includes features like verbose logging and debugging capabilities, which facilitate easier troubleshooting and quicker resolution of issues.
  • Support for Multiple Languages
    Playwright supports multiple programming languages, including JavaScript, TypeScript, Python, C#, and Java, offering flexibility to developers based on their preference.
  • Community and Support
    The Playwright project has an active community and regular updates, ensuring continuous improvement and access to support from both the community and the development team.

Possible disadvantages of Playwright

  • Steeper Learning Curve
    Due to its extensive capabilities and API, Playwright might have a steeper learning curve for beginners compared to some simpler testing tools.
  • Performance Overhead
    While Playwright aims to be efficient, its feature-rich nature can sometimes introduce performance overhead, particularly for complex test suites.
  • Evolving Ecosystem
    The relatively rapid development and updates can occasionally lead to breaking changes, requiring teams to frequently update their test scripts.
  • Less Mature Ecosystem
    Compared to more established tools like Selenium, Playwright's ecosystem is still maturing, which may result in fewer third-party plugins and integrations.
  • Limited Browser Versions
    Playwright's focus on modern browsers and web standards might make it difficult to test older browser versions or niche browsers, potentially limiting test coverage for legacy systems.
  • Resource Intensive
    Running multiple browser contexts and handling extensive network interception can be resource-intensive, requiring more powerful hardware or cloud resources for large test suites.

pytest features and specs

  • Easy to Use
    Pytest is designed to be simple and easy to use, with minimal boilerplate code required to write tests. Its straightforward syntax allows users to quickly write and understand tests.
  • Extensive Plugin System
    Pytest has a flexible and powerful plugin architecture, with a wide range of community-maintained plugins available, allowing for easy customization and extension of its functionality.
  • Detailed Information on Failures
    Pytest provides detailed and informative feedback on failures, enhancing the debugging process by highlighting where and why a test failed.
  • Fixture Support
    Pytest's fixture system allows for easy setup and teardown of test environments, encouraging the reuse of setup code and reducing code duplication.
  • Compatibility
    Pytest is compatible with standard Python testing frameworks such as unittest, allowing for easy migration and integration of existing tests.

Possible disadvantages of pytest

  • Steeper Learning Curve for Advanced Features
    While basic usage is straightforward, mastering advanced pytest features, such as writing custom plugins and fixtures, can have a steeper learning curve.
  • Performance Overhead
    For very large projects, the additional features and flexibility of pytest can introduce some performance overhead when running tests, compared to simpler testing frameworks.
  • Complexity in Parameterized Testing
    While pytest supports parameterized testing, setting up and managing complex parameterizations can become cumbersome and might require additional abstraction layers.
  • Plugin Conflicts
    With a vast ecosystem of plugins, there is a potential for conflicts or compatibility issues between different plugins, especially when they modify similar pytest behaviors.

Analysis of Playwright

Overall verdict

  • Playwright is a strong choice for browser automation and end-to-end testing due to its reliability, cross-browser support, and extensive features designed to improve test effectiveness and developer productivity.

Why this product is good

  • Playwright is considered good because it provides end-to-end testing capabilities across multiple browsers (Chromium, Firefox, and WebKit) with a single API. It supports multiple languages including JavaScript, TypeScript, Python, C#, and Java, making it versatile for different developer preferences. It offers headless and headed execution, robust automation capabilities, and improved speed and reliability over other testing frameworks. Additionally, Playwright's features like auto-wait, tracing, and capturing screenshots/videos of test runs make debugging easier.

Recommended for

  • Developers seeking cross-browser automated testing solutions
  • Teams working with multiple programming languages who require versatile testing tools
  • Projects requiring reliable, end-to-end testing capabilities
  • Organizations looking to integrate testing with CI/CD pipelines
  • Developers needing advanced debugging and tracing tools for tests

Playwright videos

Generate tests in VS Code

More videos:

  • Review - Playwright Brittany K. Allen wins 2021 Georgia Engel Comedy Playwriting Prize

pytest videos

getting started with pytest (beginner - intermediate) anthony explains #518

More videos:

  • Review - Python Code Review: Adding Pytest Tests to an Existing Python Web Scraper
  • Review - pytest: everything you need to know about fixtures (intermediate) anthony explains #487

Category Popularity

0-100% (relative to Playwright and pytest)
Development
100 100%
0% 0
Automated Testing
88 88%
12% 12
Testing
0 0%
100% 100
Browser Testing
100 100%
0% 0

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Playwright and pytest

Playwright Reviews

Top Selenium Alternatives
Playwright offers a modern approach with auto-wait APIs and more native support for modern web features compared to Selenium's more manual and broad approach. While Selenium requires explicit waits and has a broader language support, Playwright focuses on simplifying cross-browser testing with its unified API and auto-wait features, which might reduce setup and test...
Source: bugbug.io
Top 5 Selenium Alternatives for Less Maintenance
Appium and Playwright closely resemble Selenium in terms of functionality but offer unique features and advantages. Both of these solutions require coding experience. Leapwork, a commercial vendor, uses Selenium under the hood to power their visual automation approach.
20 Best JavaScript Frameworks For 2023
Playwright, a Node.js library created by Microsoft, is considered one of the best JavaScript frameworks for testing. It automates Chromium, Firefox, and WebKit with a single API. Developers building JavaScript code can use these APIs to build new browser pages, go to URLs, and interact with page elements. Additionally, Playwright can automate Microsoft Edge since it is based...

pytest Reviews

25 Python Frameworks to Master
Pytest is a widely adopted testing framework that is designed to be easy to use and extend. It helps you to write elegant tests in both small and complex Python codebases.
Source: kinsta.com

Social recommendations and mentions

Based on our record, Playwright seems to be a lot more popular than pytest. While we know about 325 links to Playwright, we've tracked only 5 mentions of pytest. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Playwright mentions (325)

  • Buzzword Bingo: An Experiment in Spec-Driven AI Development
    There is no live demo, but you can have a look at the screenshots taken by playwright during testing. - Source: dev.to / 9 days ago
  • How We Test an AI Product Without Burning Credit
    We ran straight into this while building a course product on top of The AI Platform. I want to walk you through how we ended up testing the whole chat flow end to end with Playwright. - Source: dev.to / 11 days ago
  • An Agent That Hunts Bugs in My App While I Sleep
    The app under test is The AI Platform by Zephyr Cloud, a desktop app where teams work alongside AI specialists in channels. The agent drives the real, signed-in desktop app with Playwright over CDP, the Chrome DevTools Protocol. Not a stripped-down test build, the same app a person uses. - Source: dev.to / 11 days ago
  • How to Build an Unblockable AI Agent for Browser Automation with JavaScript, Bright Data, Gemini, and Playwright
    Yes. Bright Data and Playwright solve different problems. Playwright controls the browser by clicking, typing, navigating, and extracting data, while Bright Data provides a cloud browser environment designed to access modern websites reliably. Together they create a much more robust browser automation stack than using either tool alone. - Source: dev.to / 16 days ago
  • What only the pixels knew: giving a canvas agent eyes
    The agent's screenshot_board tool drives a Playwright browser running as a sibling container, navigates to the tokenized render route, screenshots the stage as a JPEG, and passes the image block straight through to the model. The budget is five shots per session, which turns out to be plenty: the working rhythm that emerged is look, move, look again. Think with the document, judge with the pixels. - Source: dev.to / about 1 month ago
View more

pytest mentions (5)

  • An Introduction to Testing with Django for Python
    Pytest is an excellent alternative to unittest. Even though it doesn't come built-in to Python itself, it is considered more pythonic than unittest. It doesn't require a TestClass, has less boilerplate code, and has a plain assert statement. Pytest has a rich plugin ecosystem, including a specific Django plugin, pytest-django. - Source: dev.to / over 2 years ago
  • How I Added Continuous Integration (CI) to a C++ Project
    For this lab exercise I had the opportunity to add unit tests to a classmate's project and experience their CI workflow. For this exercise I worked on go-go-web by kliu57. Go-Go Web is written in Python and uses the pytest testing framework. This was my first time writing tests for pytest, but I found the pytest docs helpful. However, more helpful was the information provided in the associated issue and the tests... - Source: dev.to / over 2 years ago
  • CI/CD Part 1: Unit/Integration Testing
    This week, in a setup for a CI/CD pipeline, I added unit and integration testing using Pytest to my Python CLI and utilized pytest-cov for generating a coverage report. As always, the merged commit for changes to the repo can be found here. - Source: dev.to / over 2 years ago
  • Testing in Python
    After looking through the various unit testing tools available for Python like pytest, unittest (built-in), and nose, I went with pytest for its simlpicity and ease of use. - Source: dev.to / over 2 years ago
  • Testing and Refactoring With pytest and pytest-cov
    Up until now we've been using python's unittest module. This was chosen as a first step since it comes with python out of the box. Now that we've gone over dev dependencies I think it's a good time to look at pytest as a unit test alternative. I highly recommend getting accustomed to pytest as it's used quite often in the python ecosystem to handle testing for projects. It's also a bit more user friendly in how it... - Source: dev.to / over 2 years ago

What are some alternatives?

When comparing Playwright and pytest, you can also consider the following products

puppeteer - Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium...

JUnit - JUnit is a simple framework to write repeatable tests.

Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.

Cucumber - Cucumber is a BDD tool for specification of application features and user scenarios in plain text.

Cypress.io - Slow, difficult and unreliable testing for anything that runs in a browser. Install Cypress in seconds and take the pain out of front-end testing.

unittest - Testing Frameworks