Express API Testing

1. supertest

   1 20 14,050 5.0 JavaScript

   🕷 Super-agent driven library for testing node.js HTTP servers using a fluent API. Maintained for @forwardemail, @ladjs, @spamscanner, @breejs, @cabinjs, and @lassjs.

   

   Supertest is quite popular and easy to use test tool, you can do integration and E2E test as well, you just need to pass it the server instance or a string to make a request and assert over the response.

2. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. nodejs-testing-best-practices

   2 15 4,101 7.7 JavaScript

   Beyond the basics of Node.js testing. Including a super-comprehensive best practices list and an example app (April 2025)

   

4. ava

   3 34 20,784 5.2 JavaScript

   Node.js test runner that lets you develop with confidence 🚀

   

   Last but not least important are ava, uvu and tape; they are a really light and fast test runners.

5. vitest

   4 153 14,468 9.9 TypeScript

   Next generation testing framework powered by Vite.

   

   Vitest is a close competitor to Jest, it's faster and younger than jest, and it use vite under the hood to work, so for pure Node.js apps (100% backend) could have some caveats with ES modules.

6. uvu

   5 21 3,002 1.5 JavaScript

   uvu is an extremely fast and lightweight test runner for Node.js and the browser

   

   Last but not least important are ava, uvu and tape; they are a really light and fast test runners.

7. tape

   6 17 5,789 7.5 JavaScript

   tap-producing test harness for node and browsers

   

   Last but not least important are ava, uvu and tape; they are a really light and fast test runners.

8. Sinon.JS

   7 32 9,732 8.2 JavaScript

   Test spies, stubs and mocks for JavaScript.

   

   Mocha is a test runner, Chai is an assertion library, Sinon is a mocking library, this normally the combination you would need to use if you choose mocha, but there are others.

9. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

10. pactum

    8 12 574 7.0 JavaScript

    REST API Testing Tool for all levels in a Test Pyramid

    

    Pactum is quite powerful allowing different kind of E2E tests, you pass the base URL to make a request and assert over the response, it has more assertion functions than supertest and also supports GraphQL

11. chai-http

    9 2 638 7.7 JavaScript

    HTTP Response assertions for the Chai Assertion Library.

    

    chai-http adds the capability to make HTTP requests to Chai while keep using the assertion functions from Chai

12. fakeshop-api

    10 2 3 7.5 TypeScript

    Minimal API RESTful with MongoDB and tested with Jest

    

    Integration test with jest and supertest E2E test with jest and Pactum

13. mocha

    11 167 22,773 8.6 JavaScript

    ☕️ simple, flexible, fun javascript test framework for node.js & the browser

    

    Mocha is a test runner, Chai is an assertion library, Sinon is a mocking library, this normally the combination you would need to use if you choose mocha, but there are others.

14. nest-api-example

    12 4 128 9.7 TypeScript

    Example of an Restful API with Nest.js and TypeORM

    

    Integration test with jest and supertest E2E test with jest and Pactum

15. jest

    13 522 44,819 8.9 TypeScript

    Delightful JavaScript Testing.

    

    Jest is a test framework because it already includes the test runner, assertion and mocking functions, it's quite popular because you don't need to wire anything to start executing tests, but it has some caveats

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