msw
miragejs
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msw | miragejs | |
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148 | 17 | |
14,848 | 5,281 | |
2.3% | 0.3% | |
9.2 | 4.3 | |
1 day ago | 11 days ago | |
TypeScript | JavaScript | |
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.
msw
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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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Creating mocks for testing react code
While mocks are effective, they require modifying the component's internal logic or mocking global functions like fetch. This can become cumbersome for complex components with numerous API interactions. Here's where MSW shines.
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Storybook 8
> For those wondering what the use case is, you must not have tried it. It does take work to set up (with each version that's less), but it can be very nice to test in isolation esp in cases where a component is under a login, the 4th page of a 10 page form, etc. Also obviously if you're working on a component library that ships without an app, Storybook can be your development and/or demo app.
I have worked with storybook extensively over the past couple of years and my team is moving away from it in favour of MSW (https://mswjs.io).
For "4th page of a 10 page form" during the development there's hot reloading which is really stable nowadays and haven't failed me, although I understand that some setups are old and it might be easier to configure Storybook than good hot reloading.
I'm not entirely sure about the testing part of it and I'd be grateful if you could elaborate. I haven't felt the need for some special setup with SB because for unit tests, I can test a deeply nested component separately. For E2E tests, I usually test the whole form.
I agree on the component library part, this is probably the only use case where Storybook is 100% justified, but I'm unconvinced about the
Additionally, thank you to all our community launch partners across the frontend ecosystem for helping us bring Storybook 8 to the world! Thanks to Chromatic, Figma, ViteConf, Omlet, DivRiots, story.to.design, StackBlitz, UXpin, Nx, Mock Service Worker, Anima, Zeplin, zeroheight, kickstartDS, and Kendo UI.
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I made "TypeScript Swagger Editor", new type of Swagger UI writing TypeScript code in the browser
similar with msw.js, but fully automated
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Partial: how not to mock the whole world
they could be network mocks (use msw)
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How to Automatically Consume RESTful APIs in Your Frontend
With orval, we can also integrate the API client in our unit tests. Orval provides first class support for mocking through the (Mock Service Worker)[https://mswjs.io/] library, and it can automatically generate the MSW handlers for testing server.
- Polly.js – Record, replay, and stub HTTP interactions
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How to Successfully Integrate with Legacy APIs Using NodeJS
Consider a hypothetical scenario where data from a list of companies within an ERP needs to be retrieved. As a personal recommendation, leverage tools like MSW for top-level mocks, which can significantly enhance the testing process.
- How do you manage Dependency Injection in Next.js APPS?
miragejs
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Exploring Mirage JS: Simplifying API Mocking in React Development
Mirage JS GitHub Repository
- Mock server
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The Definitive Guide to Make API Calls in React
For the styles, I'll be using TailwindCSS. To simulate API requests Mirage JS will be used, which is a very easy to use and useful API mocking library. To call this API, we're going to use Fetch.
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e2e testing setup and thoughts on Playwright
during development we use mirage JS to spin up an in-browser mock server which returns mock data for any API endpoints not currently implemented by the real backend. during integration testing we configure this server to return mock data for all API endpoints in the system, giving us a fixed environment against which our tests can run. test suites can be run in parallel since each time a playwright page is opened a new copy of the webapp, and thus a new copy of the mock server, is launched. these integration tests run whenever a frontend PR is opened or updated.
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How do you practice with React without setting up your own backend?
Mirage JS is specifically built for this purpose as well. It‘s a frontend JavaScript library meant for mocking backend APIs. https://miragejs.com/
We use miragejs https://miragejs.com/
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Do tests without seeing the code!
The best case scenario you would be using something like MirageJS, MSW, or even JSON Server, but mocking fetch is always an option.
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Mock server while developing
Mirage JS is pretty useful and allows you to create complex testing scenarios with its embedded db. Useful when you have relationships between your models.
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Mocking API calls in React Tests with Nock
Mirage JS: Mirage JS is an API mocking library that lets you build, test, and share a complete working JavaScript application without having to rely on any backend services.
- How to correctly mock node-fetch?
What are some alternatives?
Nock - HTTP server mocking and expectations library for Node.js
rtk-query - Data fetching and caching addon for Redux Toolkit
json-server - Get a full fake REST API with zero coding in less than 30 seconds (seriously)
mockoon - Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
Express - Fast, unopinionated, minimalist web framework for node.
prism - Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
axios - Promise based HTTP client for the browser and node.js
http-server - a simple zero-configuration command-line http server