jsverify
vitest
jsverify | vitest | |
---|---|---|
5 | 110 | |
1,666 | 11,873 | |
0.1% | 2.0% | |
1.8 | 9.8 | |
about 3 years ago | 2 days ago | |
JavaScript | TypeScript | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
jsverify
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The 5 principles of Unit Testing
Libraries like JSVerify or Fast-Check offer essential tools to facilitate property-based testing.
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Ask HN: What's your favorite software testing framework and why?
I tend to use anything that offers property-testing, since tests are much shorter to write and uncover lots more hidden assumptions.
My go-to choices per language are:
- Python: Hypothesis https://hypothesis.readthedocs.io/en/latest (also compatible with PyTest)
- Scala: ScalaCheck https://scalacheck.org (also compatible with ScalaTest)
- Javascript/Typescript: JSVerify https://jsverify.github.io
- Haskell: LazySmallCheck2012 https://github.com/UoYCS-plasma/LazySmallCheck2012/blob/mast...
- When I wrote PHP (over a decade ago) there was no decent property-based test framework, so I cobbled one together https://github.com/Warbo/php-easycheck
All of the above use the same basic setup: tests can make universally-quantified statements (e.g. "for all (x: Int), foo(x) == foo(foo(x))"), then the framework checks that statement for a bunch of different inputs.
Most property-checking frameworks generate data randomly (with more or less sophistication). The Haskell ecosystem is more interesting:
- QuickCheck was one of the first property-testing frameworks, using random genrators.
- SmallCheck came later, which enumerates data instead (e.g. testing a Float might use 0, 1, -1, 2, -2, 0.5, -0.5, etc.). That's cute, but QuickCheck tends to exercise more code paths with each input.
- LazySmallCheck builds up test data on-demand, using Haskell's pervasive laziness. Tests are run with an error as input: if they pass, we're done; if they fail, we're done; if they trigger the error, they're run again with slightly more-defined inputs. For example, if the input is supposed to be a list, we try again with the two forms of list: empty and "cons" (the arguments to cons are both errors, to begin with). This exercises even more code paths for each input.
- LazySmallCheck2012 is a more versatile "update" to LazySmallCheck; in particular, it's able to generate functions.
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Property Based Testing Framework for Node
The usage of hypothesis is very intuitive and simple, and presents the concept of property-based testing perfectly. So I also wanted to find an equivalent alternative in Node. Two of them have high star ratings on Github, JSVerify with 1.6K stars and fast-check with 2.8K stars. So I took some time to study fast-check a little bit and try to get closer to my daily work.
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Machine Readable Specifications at Scale
Systems I've used for this include https://agda.readthedocs.io/en/v2.6.0.1/getting-started/what... https://coq.inria.fr https://www.idris-lang.org and https://isabelle.in.tum.de
An easier alternative is to try disproving the statement, by executing it on thousands of examples and seeing if any fail. That gives us less confidence than a full proof, but can still be better than traditional "there exists" tests. This is called property checking or property-based testing. Systems I've used for this include https://hypothesis.works https://hackage.haskell.org/package/QuickCheck https://scalacheck.org and https://jsverify.github.io
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React to Elm Migration Guide
Using create-react-app, you’ll run npm test which uses Jest internally. If you are dealing with a lot of data on the UI, or using TypeScript, use JSVerify for property tests. For end to end tests, Cypress is a great choice.
vitest
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Integration Testing in Obsidian
Using something like Vitest, Jest, or Mocha didn't work because:
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Easier TypeScript API Testing with Vitest + MSW
However, I discovered a great combination that transformed my API call testing in TypeScript: Vitest and Mock Service Worker (MSW). Their well-crafted design makes them incredibly easy to use, enhancing the overall testing experience.
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Vitest In-Source Testing for SFC in Vue?
Next we’ll install Vitest and happy-dom to the project by running:
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Creating a reusable Design System between React and React Native with Tamagui
vitest is a testing framework similar to jest that integrates well with projects using Vite. It allows us to reuse plugins and configurations already set up in the vite.config.ts, making the test setup process easier.
- Criando um Design System reutilizável entre React e React Native com Tamagui
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Test your React Apps with Vitest
For more detailed information on Vitest, refer to the official documentation. fficient Testing in Your React Projects with Vitest.
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Um júnior e um teste técnico: The battle.
Vitest
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Migrating from Jest to Vitest for your React Application
Are you looking to migrate from Jest to Vitest for your React application? Look no further.
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Faster testing with Angular and Vitest ⚡️
In addition to those tools, a new testing framework has emerged named Vitest. Vitest is built on top of Vite and has many exciting features to keep improving the overall developer experience for writing tests. This post shows you how to set up Vitest in your existing Angular project.
- What’s your Vue application testing strategy?
What are some alternatives?
greenlight - Clojure integration testing framework
jest - Delightful JavaScript Testing.
testy - test helpers for more meaningful, readable, and fluent tests
Playwright - Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.
LazySmallCheck2012 - Lazy SmallCheck with functional values and existentials!
swc - Rust-based platform for the Web
fast-check - Property based testing framework for JavaScript (like QuickCheck) written in TypeScript
ava - Node.js test runner that lets you develop with confidence 🚀
hitchstory - Type-safe YAML integration tests. Tests that write your docs. Tests that rewrite themselves.
happy-dom - A JavaScript implementation of a web browser without its graphical user interface
datadriven - Data-Driven Testing for Go
Next.js - The React Framework