testdouble.js (AKA td.js)
A minimal test double library for TDD with JavaScript (by testdouble)
jest
Delightful JavaScript Testing. (by jestjs)
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testdouble.js (AKA td.js) | jest | |
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4 | 473 | |
1,407 | 43,581 | |
0.3% | 0.5% | |
6.5 | 9.5 | |
about 1 month ago | 4 days ago | |
JavaScript | TypeScript | |
MIT License | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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.
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.
testdouble.js (AKA td.js)
Posts with mentions or reviews of testdouble.js (AKA td.js).
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-06-04.
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Cannot figure out how to mock ES6 modules for a Node AWS Lambda
ESM modules need custom loaders for mocking. Testsouble (https://www.npmjs.com/package/testdouble) was one of the first frameworks to support it AFAIK and a great type-safe option.
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TypeScript testing
Alternative is using testdouble with `td.object()` https://www.npmjs.com/package/testdouble
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Testing Without Mocks
I’m not sure I manage to follow the author correctly, but to me it seems that by “mock” they strictly refer to external mocking libraries, in the sense of JS’s `testdouble` [1] or Java’s `Mockito` [2]. The fake object as returned by `LoginClient.createNull().getUserInfo(...)` appears to be a “Nullable” for them.
[1] https://www.npmjs.com/package/testdouble
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What you need to know about ES modules in Node.js
If you need an alternative for mocking, testdouble.js has full ES module support thanks to some excellent work by Gil Tayar.
jest
Posts with mentions or reviews of jest.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-04-05.
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What is an Abstract Syntax Tree in Programming?
GitHub | Website
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Top 10 Tools Every React Developer Needs in 2024
Jest
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API Testing with Clerk and Express
you have selected a testing framework. In my case, it's Jest with Supertest
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JS Toolbox 2024: Bundlers and Test Frameworks
Jest, created and maintained by Facebook, is a JavaScript testing framework with a focus on simplicity. It is often recognized for its zero-configuration setup and seamless integration, especially with React applications, making it a favored choice for developers in both small-scale projects and large enterprise applications.
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Testing library for Node.js and React
Jest (https://jestjs.io/)
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Unit Testing Expo Apps With Jest
console.error Jest encountered an unexpected token Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. By default "node\_modules" folder is ignored by transformers. Here's what you can do: • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it. • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript • To have some of your "node\_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. • If you need a custom transformation specify a "transform" option in your config. • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option. You'll find more details and examples of these config options in the docs: https://jestjs.io/docs/configuration For information about custom transformations, see: https://jestjs.io/docs/code-transformation
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Easily create mock data for unit tests 🧪
Note: I will be using Jest as testing framework throughout the examples.
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Painless CLI integration testing
We use Jest Framework for testing. Jest is not a dogma, and, of course, in its place can be any other test runner, such as Mocha or Ava. Let's focus on tests. I'll provide a short example because I don’t want to waste your time. You can find the full version here. It's crucial to read the comments in the code below. Let's go!
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What is integration testing in UI/Front End?
Jest has long been my favorite got to test runner when it comes to UI unit and integration testing. With tools like React Testing Library (Testing Library framework for React) you get the benefit of very easy to write and maintain tests, as well as a quick and efficient way to run our tests.
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13 best React debugging tools
Jest is a well-regarded JavaScript testing framework primarily designed for React applications, although its utility extends to projects using Babel, JavaScript, Node, Angular, and Vue. Created by Facebook, Jest emphasizes ensuring the correctness of JavaScript codebases. It allows developers to write tests with a familiar, feature-rich API, making the testing process swift and enjoyable.
What are some alternatives?
When comparing testdouble.js (AKA td.js) and jest you can also consider the following projects:
tape - tap-producing test harness for node and browsers
tap - Test Anything Protocol tools for node
loadtest - Runs a load test on the selected URL. Fast and easy to use. Can be integrated in your own workflow using the API.
vitest - Next generation testing framework powered by Vite.
Sinon.JS - Test spies, stubs and mocks for JavaScript.
Cucumber.js - Cucumber for JavaScript
nyc - the Istanbul command line interface
mocha - ☕️ simple, flexible, fun javascript test framework for node.js & the browser
WebdriverIO - Next-gen browser and mobile automation test framework for Node.js
testdouble.js (AKA td.js) vs tape
jest vs tap
testdouble.js (AKA td.js) vs loadtest
jest vs vitest
testdouble.js (AKA td.js) vs Sinon.JS
jest vs Cucumber.js
testdouble.js (AKA td.js) vs Cucumber.js
jest vs Sinon.JS
testdouble.js (AKA td.js) vs nyc
jest vs nyc
testdouble.js (AKA td.js) vs mocha
jest vs WebdriverIO