It is crucial to evaluate and confirm an application’s functionality to make sure it meets user needs and provides an excellent user experience. This is possible with automation testing, which transforms manual test cases into test scripts with the aid of a few automation tools. Automated testing tools are designed to accelerate testing processes while improving test case coverage and efficiency.
Compared to manual testing, automation testing saves time and labor while eliminating the chance of testing failures. Automation testing utilizes tools that execute test cases automatically and produce test results without the need for human involvement. Once created, these automated test scripts may be reused to test the same application on different operating systems, platforms, and browsers, eliminating the need for further manual effort.
Numerous automation test tools are available that target various testing types. Users utilize several automation frameworks and tools, including Cypress, Selenium, Puppeteer, Appium, and Playwright, according to the testing requirements. When it comes to the choice of testing tools, Cypress and Playwright are both highly reliable and strong web-based testing and automation tools.
In this article, we’ll compare the Cypress and Playwright frameworks in detail, highlighting their advantages and disadvantages so that users may decide which one is best for their application testing needs considering the rising demand for automation. To fully utilize the advantages of each, we will also compare how they operate, including similarities and differences. Let’s have a quick peek at what Cypress and Playwright are before diving into the in-depth comparison between them.
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By recording screenshots of the tests they conduct, it also allows them to time-travel through their tests. so that they can see what happened at each stage. Additionally, when a test is run via the command line interface, Cypress automatically records videos of every test suite and images of errors.
Architecture of Cypress
The majority of automation testing tools, like Selenium, operate outside of browsers and carry out tasks by sending network-based remote commands. However, the Cypress runs differently. It runs tests straight in the browser while the applications are running. Since Cypress tests are run on the live browser, driver binaries are not required.
Cypress operates a Node.js server in the background that communicates with the browser through a WebSocket. Through this contact, tasks can be synchronized and carried out on each other’s behalf.
One of the most important components of the Cypress architecture is communication between the Node.js server and the browser. Cypress can offer a seamless testing experience by running tests directly in the browser and giving the user real-time feedback.
Benefits of using Cypress
Cypress is one of the most versatile options available to test developers for web automation because it offers a variety of features.
- Because of its architectural design, which allows tests to be executed directly in the browser, Cypress offers quick and reliable testing in comparison to other automation tools. This removes the need for extra drivers or plug-ins and offers immediate feedback on how tests are running. Hence, supports quick, reliable, consistent, and flake-free tests.
- Cypress is simple to set up and install, and it has an intuitive dashboard that makes it simple to design, manage, and run tests.
- Cypress automatically waits for elements to load and retries commands before continuing, reducing flaky tests and enhancing test reliability. This eliminates the need to explicitly add waits or sleeps to the tests.
- Cypress enables developers to hover over each command in the Command Log to observe what happened at each stage. It also offers real-time reloading of tests and application code by capturing snapshots as the tests are executed. It is simple to create and debug tests because of the clear errors and stack traces.
- Modern web technologies like React, Vue, Angular, and TypeScript are supported natively by Cypress. Additionally, it effortlessly interfaces with well-known testing frameworks and libraries like Mocha, Chai, and Jest.
- Cypress enables cross-browser testing, enabling developers to test their apps on multiple platforms and browsers.
Limitations of Cypress
Although Cypress provides several benefits, there are some drawbacks as well to take into account:
- Cypress does not offer mobile testing because it only supports browsers built on the Chromium platform. It requires a third-party plugin to offer mobile testing features.
- Furthermore, Cypress does not support the Tab key, upload/download fields, or location via XPath; all of these require plugins to be used.
The playwright is a high-level API for interfacing with web browsers that enable developers to replicate user behaviors including button clicks, form fills, and page navigation. Playwright also includes strong tools like Trace Viewer, which records data like DOM snapshots and test execution screencasts and enables you to look at test failures.
The best part is that Playwrights offers capabilities that assist in avoiding flaky tests, or tests that produce passing and failing results without modifying the test or code. Additionally, it offers Playwright Inspector, which enables additional inspection of the test runs, and Codegen, which enables generating tests by just recording the actions.
Architecture of Playwright
The Playwright runs tests outside of the browser window and is compatible with the architecture of modern browsers. The client and server are connected via a single WebSocket connection. The Playwright server receives the provided commands in JSON format after being transformed at the client end using code written in various computer languages.
Through a procedure known as the WebSocket handshake, a client sends a request to the server to start a WebSocket connection. The commands are sent to the Playwright server once the connection has been made, and the server then performs them on the browser instance. The response is then returned to the client by the server in JSON format using the WebSocket connection. Until all of the commands in the test have been run, the Playwright communicates all requests across a single web socket connection.
Benefits of Playwright
Some advantages of utilizing Playwright include:
- Playwright supports the automation of all current web browsers, including Mozilla Firefox, Apple Safari, Google Chrome, and Microsoft Edge (with Chromium).
- The playwright waits automatically for the completion of page elements. This guarantees reliable and seamless test execution.
- To avoid sleep timeouts that lead to flakiness, Playwright receives browser signals such as network requests, page navigations, and page load events.
- With the help of different user agents, cookies, and caches, Playwright lets developers establish several browser contexts. For testing web apps with several users, this functionality is helpful.
- The Playwright’s ability to record video of test execution and screenshots makes it easier to troubleshoot and analyze test failures.
Limitations of Playwright
- Being a new framework, Playwright receives less community support than more well-known frameworks like Cypress or Selenium. Because of this, it could be more challenging to find online help, plugins, or examples.
- Playwright provides mobile testing through device emulation, as opposed to using actual mobile devices.
- Playwright does not come with a built-in assertion library.
- Compared to Cypress, Playwright can be harder to set up.
Key similarities between Cypress and Playwright
Both provide the ability to conduct tests and interact in Firefox and Chromium browsers despite their differences in browser compatibility. These tools are quite helpful because they have functionality like taking screenshots, stubbing requests, creating custom viewports, and testing on various screen sizes.
Additionally, it should be possible for testers to execute their tests without a user interface or as a part of a continuous integration pipeline, they can then utilize either in this situation since both frameworks provide headless features that enable them to do so directly from the Interface.
Key differences between Cypress and Playwright
Both Cypress and Playwright seek to address the same problem, but they approach it in different ways.
Both frameworks conduct their tests in various ways. Playwright is promise-based and can run multiple browsers and user contexts simultaneously, whereas Cypress must be restarted with the additional browser settings. Playwright runs the tests in run-time, while Cypress runs them at run-time.
There is no built-in error handling for failed commands in Cypress. If one of a command’s assertions fails, the following commands are not executed, which results in the test failing. The playwright has support for a try-catch handler which is easier to modify.
Since Cypress serially executes all of its commands and makes sure to deliver the same consistent behavior for each test run, it does not offer the ability to conduct commands in parallel. Playwright, in contrast, allows for parallel execution, which speeds up test execution.
Soft Asserts are a crucial component of automation. It is employed when the test method (or test script) does not need to stop when the assertion condition does not produce the desired outcome. Soft asserts are supported by the playwright, but not by Cypress. As a result, Cypress experiences more test case failures for uncertain or alternative conditions.
Testing against multiple browsers at once is not possible with Cypress. But Playwright offers superior cross-browser compatibility. Testers can test on several browsers using Playwright. In addition, Playwright offers full support for iFrames while Cypress only offers partial support.
Automation using Cypress and Playwright framework with LambdaTest
When there are numerous options available, selecting the best testing framework for a web application is crucial to expediting the overall testing process. Although both Cypress and Playwright are well-known testing tools, there are some distinctions between their functions and features.
Therefore, whatever test automation framework is selected, it is imperative to make sure that the website is offering a seamless and consistent user experience regardless of the device and browser being used to access it. To guarantee that, testing teams must think about using real devices on test orchestration platforms like LambdaTest.
LambdaTest is an AI-powered test orchestration and execution platform to run both manual and automated tests at scale. The platform allows to perform real-time and automation testing for web, mobile, and APIs across 3000+ environments and real mobile devices.
All of the popular automation testing frameworks, including Selenium, Cypress, Playwright, Puppeteer, etc., can be seamlessly integrated with LambdaTest. With the help of its cloud Selenium Grid, testers can run cross-browser tests on numerous devices and browsers at once and take advantage of parallel testing for quicker testing with greater coverage.
By integrating LambdaTest with these frameworks, developers can easily create high-quality web applications while regularly and confidently testing them on real browsers. Additionally, it may be integrated with numerous well-known CI/CD tools like Jenkins, Travis CI, Jira, and many others.
To assist testers in gaining an understanding of test results, this cloud also offers reporting and analytics services. With the help of its built-in debugging tool, testers can enhance the testing process by quickly identifying and fixing errors.
In conclusion, it can be said that the rising emphasis on test automation in the current fast-paced world of application development has led to the rise of numerous automated testing tools, such as Cypress and Playwright. They are confirmed to be extremely important for observing possible problems and creating a solid application that allows for quality at speed.