Enzyme vs Selenium: What are the differences?
Enzyme and Selenium are both open source tools. Enzyme with 17.5K GitHub stars and 1.93K forks on GitHub appears to be more popular than Selenium with 14.9K GitHub stars and 4.97K GitHub forks.
MIT, Typeform, and Intuit are some of the popular companies that use Selenium, whereas Enzyme is used by Airbnb, Redox Engine, and StyleShare Inc.. Selenium has a broader approval, being mentioned in 776 company stacks & 440 developers stacks; compared to Enzyme, which is listed in 52 company stacks and 32 developer stacks.
What is Enzyme?
What is Selenium?
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What are the cons of using Enzyme?
What are the cons of using Selenium?
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I use both mocha and Jest because:
I don't care whether teams use Jest or Mocha. But jest is way too overhyped. Most devs are writing integration tests and think that it's so much better but frankly I don't write integration tests as the way to get both design feedback and confidence when I code. I adhere to the test pyramid, not ice cream cone or the dumb "trophy"
I TDD, so I only ever use the "API" of test frameworks. I don't do a lot of integration tests for TDD and all the bells and whistles Jest provides you from the command-line I just don't need. And I certainly do not care about or touch Jest Snapshots, I despise them
My tests are fast enough because I write isolated tests with TDD, so I don't run into performance issues. Example: I write my tests in a way that I can run 300 tests in literally 1 second with mocha. So the Jest ability to pinpoint and only run those tests which are affected by code changes. I want to run all of them every time when I TDD. It's a different mindset when you TDD
I also mainly code in IntelliJ or WebStorm because I feel the tools in that IDE far surpass VSCode and I also love running the test UI runner in it vs. lousy command-line
I feel both mocha and Jest read just fine in terms of code readability. Jest might have shorter assertion syntax but I don't really care. I just care that I can read the damn test and my tests are written well and my test descriptions, as well as the code itself including constants represent business language, not technical. I care most about BDD, clean code, 4 rules of simple design, and SOLID
I don't like using mock frameworks so no I don't use Jest's Mocking framework. I don't have to mock a lot in my tests due to the nature of how I strive to code...I keep my design simple and modular using principals such as clean code and 4 rules of simple design. If I must mock, I create very simple custom mocks with JS
On the contrary to the belief that integration tests and mount are the way to go (this belief drives me absolutely crazy, especially Dodd's promoting that), I TDD with shallow & enzyme. My tests are simple. My design is driven by my tests and my tests give me quick and useful feedback. I have a course I'm working on coming out soon on TDD with React to show you how to truly test the FE and why the ice cream cone and trophy suck (you're being scammed people). Watch for that here: https://twitter.com/DaveSchinkel/status/1062267649235791873
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We use Jest because when we rebooted our "front end" stack earlier last year, we need to have a testing solution (we didn't have any front-end tests before that!). Jest is fast and convenient and it has plenty of community support behind it. It let's us run our unit tests with Enzyme and snapshot tests.
This is an area that we are constantly reviewing to see what can be improved, both in terms of developer needs, accuracy, test maintainability, and coverage.
I'm currently exploring using React Storybook to be the record of snapshot tests and using some online services, such as Happo.io and Percy in our CI pipeline.
I really enjoy using Jest as my testing framework. I also use Enzyme to complement, and both together are amazing. Jest is fast and easy to use, It has all you need together under the same tool, and it's pretty easy to create all kind of test, even asynchronous ones. I was responsible for implant it in our company projects, and it was the best decision for testing.
With this structure, we're able to combine the automation efforts of each team member into a centralized repository while also providing new relevant metrics to business owners.
I chose WebdriverIO and Appium to implement a E2E tests solution on a native mobile app. WebdriverIO goes well beyond just implementing the Selenium / Appium protocol and allows to run tests in parallel out of the box. Appium has the big advantage of supporting iOS and Android platforms, so the test codebase and tools are exactly the same, which greatly reduces the learning curve and implementation time.
가장 강력한 웹 UI / UX 테스트 툴 이지만, 문제도 많다. iframe 안에 있는 건 잘 select 가 안되기도 하고, 화면이 작아 컴포넌트가 화면에 보이지 않으면 또 select 할 수 없다. 하지만 브라우저를 있는 그대로 제어 할 수 있다는 게 가장 큰 매력이다.
ps. selenide 와 같이 쓰면 코드가 많이 개선된다.
Maintaining and expanding automated regression tests is one of my primary responsibilities at CrowdTwist. We use Selenium to test the front-end parts of our platform.
Used Selenium web-driver for automated QA testing in continuous integration and continuous deployment.
- Navigating our site for tests
- Navigating other sites that discriminate against non-human visitors
Selenium is a great way to automatically test if a build is sane and can be deployed.