Nock typescript In order to reproduce it, please see the attached project. request Setting the aws-sdk object explicitly Due to transpiling, code written in TypeScript or ES6 may not correctly mock because the aws-sdk object created within aws-sdk-mock will not be equal to the object created within the code to test. - k0pernikus/golden-master-test Jul 27, 2021 · The AWS SDK for Javascript team would like to highlight the open-source community and it’s contributions. Which basically means it will break all your non server Sep 26, 2024 · It seems if I replace the preset/node imports in nock/lib/intercept. 0 TypeScript Version No response What happened? When the Nock library is upgraded from version 14. npm install --save-dev mocha @types/mocha chai @types/chai Mocha is the test runner. 11. According to that you could use the callback mechanism instead, the callback is provided as a third argument: Repro of missing nock intercept. js code that depends on external services and APIs by using Nock to test HTTP requests in isolation. The linked repo has a minimal reproduction. Each test file runs fine on its own. rec(). 8 with node native https requests and certificate authentication #2786 Nov 20, 2024 · Nock Version 14. 5 and earlier. If timeout is define in request options, delay () function works and a timeout is triggered. We are currently in the migration from a "pure" typescript express server, to a Sapper project. There are 177 other projects in the npm registry using node-mocks-http. There are 116 other projects in the npm registry using @types/nock. ts) for nock. ts. TypeScript Definitions (d. typescript mocha sqs aws-sdk-js fp-ts nock sqs-consumer localstack node-soap apinmbrsnl Updated on Mar 1, 2020 TypeScript Stub TypeScript definitions entry for nock, which provides its own types definitions latest version 11. if you run it you should get this: Nov 19, 2024 · @techxplorer, the data in your fixtures is plain text, so you need to recreate it with nock. 9 Node Version 14. log added to nock. Jun 17, 2019 · import nock from "nock" is importing a default export, which nock doesn't provide. Nock Nock is an HTTP mocking and expectations library for Node. ClientRequest too to cover for modules that use it directly. It's basically a cli task runner, and a task requests an external api multiple time in order to create a file. Q: Are there any breaking changes in recent versions? A: Check the changelog or releases for breaking Aug 22, 2019 · What is the expected behavior? Nock TypeScript definitions should work similarly to how they behaved prior to types being introduced. Senior Front-end Developer @Capital One | Vue. Nov 16, 2025 · Q: Can I use nock in production? A: Check the documentation and test thoroughly before using in production. Dec 9, 2016 · Mocking REST API Endpoints with Nock You may have been in a situation where a portion of the backend of your architecture was being replaced with a new database or technology (e. 6 and later, but produces Error: Nock: No match for request on Node. nodejs graphql docker template koa typescript yarn jest apollo-server graphql-tools nock graphql-voyager graphql-playground Updated on Jan 18, 2019 TypeScript Record, Replay, and Stub HTTP Interactions. isDone () (or any other static method) should correctly run. js Nock can be used to test modules that perform HTTP requests in isolation. js, and with the rise of TypeScript, it's natural to want to use type-checked tests. I can use the TypeScript compiler (tsc) from the typescript module to compile the code. Combining Nock with TypeScript brings the benefits of static typing to the mocking process, making the code more robust and easier to maintain. I use nock. . My issue is with scoping function . 12. js ecosystem that allows developers to intercept and mock HTTP requests. npmjs. Tests that Feb 3, 2023 · In short: When doing normal calls, nock works perfectly But when testing a request that triggers axios-retry, nock fails when the first retry attempt happens (based on logging) Does nock support Feb 14, 2022 · In this quick tutorial, learn how to make mock HTTP requests with Nock to test your Node. gitignore # Git 忽略文件配置├── _typescript nock nock. Nov 20, 2024 · Nock Version 14. 5. 0:00 - Start 3:08 - First problem - bad mock type 3:18 - Type Assertion - solution for bad types 4:36 Sep 25, 2024 · nock beta stopped working from version 14. Apr 26, 2022 · Reproducible test case RunKit does not support Node 18 yet. The console. js with preset/browser my tests pass fine (which by extension I think means intercepting probably works fine, though I've not used the recorder so its possible that doesn't); so I guess this probably then comes down to if nock is expecting to work in a Repro of missing nock intercept. Aug 25, 2022 · I've tried a basic API test using two different libs - nock and msw - and both of them work locally. 0 at the time of writing), this might save you some time. @nock/openapi is a library for mocking HTTP requests based on OpenAPI 3. js, and using jest: import nock from 'nock' afterEach(() =&gt; { nock. Contribute to tapjs/tapjs development by creating an account on GitHub. 1. Requests fail to timeout. 0 TypeScript Version No response What happened? Unlike nock v13 (with node-fetch package) delayBody doesn't work correctly with 14. 22. Contribute to Netflix/pollyjs development by creating an account on GitHub. 5 Node Version 22. We'll create a simple react app and request an external API. Mar 17, 2022 · Reproducible test case see comment below Nock Version 13. 2) is used, every time a new MongoDBContainer is started. Dec 4, 2016 · I inherited a typescript@2 project that has no tests in place. mock or vi. Upgrade your interpreter (node. Oct 23, 2024 · What happened? I'm using Nock Back to record external HTTP requests in tests and replay them. Ideally anything that you are dependency injecting into your constructor you should be providing and mocking out. But to continue working with it, I need an object. 1 TypeScript Version No response Mar 6, 2020 · Having problem producing a test case? Try and ask the community for help. 8 with node native https requests and certificate authentication #2786 Jul 24, 2025 · What happened? Nock 14. Jul 6, 2021 · I have a Record<string, any> and would like to convert it to an object. In Nock 13 this works fine. Q: What's the bundle size of nock? A: Check Bundlephobia for exact bundle size and tree-shaking analysis. If the test case cannot be reproduced, the Nock community might not be able to help you. js 18. Testing the same directly in node results in url being set correctly for both original and cloned response. Mar 6, 2020 · Having problem producing a test case? Try and ask the community for help. 0-beta. Generated based off the DefinitelyTyped repository [git commit: 7c94fa739cdb7ef9c5fb794116e787cb13955d35]. ts in repro repo for details). 16. We will look at: Why mock HTTP requests during testing? What is Nock? Code examples of both nock and nock. domain Aug 21, 2025 · Explore the top JavaScript mocking libraries, understand their strengths and limits, and identify which fits best for your testing needs. back but I cant see how to work around it. 6 Node Version 18. But it was not. I tried --compilers ts:typescript, but I keep getting errors like: I am trying to test if my API routes are working using nock. What is the actual behavior? Prior to nock publishing TypeScript definitions, I was using the library with @types/nock instanced, and importing the module like so: Sep 27, 2023 · I am trying to test a custom hook that uses react-query for data fetching in a React 18 project. ts, calling nock () and nock. Start using @types/nock in your project by running `npm i @types/nock`. It uses typescript and relies on nock for http recording. setTimeout does not function with nock@14. js native API ClientRequest. request function. if you run it you should get this: Repro of missing nock intercept. My routing file routes according to the following logic: Knock's server-side helper libraries (also known as server-side SDKs) reduce the amount of work required to use Knock's REST APIs, starting with reducing the boilerplate code you have to write when integrating Knock in your server-side application. spyOn. cleanAll(); }) When I TypeScript Definitions (d. Q: Does nock work with TypeScript? A: TypeScript is supported. post() is showing matchi Feb 8, 2020 · Learn how to write integration tests with unmock and nock. js/express application in typescript that includes a proxy route that has some custom business logic to determine the proxy url: import proxy from "http-proxy-middleware"; c Apr 26, 2017 · I'm running the following TypeScript code: import * as nock from 'nock'; import * as rp from 'request-promise'; // const server = nock ('https://fake. So far so good. request Testing external APIs can be tricky. restore() in afterAll() as you mentioned, the memory leak warning should go away. 0 TypeScript 3. Nov 16, 2025 · Q: Does nock work with TypeScript? A: TypeScript is supported. 16 Node Version v22. 16 using node's native fetch. The Albert Jay Nock Collection consists of the correspondence and writings of Albert Jay Nock, correspondence and writings of others about Nock, and some materials concerning Ruth Robinson, an intimate friend of Nock's. com/package/nock for tests. Nock works by overriding Node's http. Be aware, though, that this will turn off mocking, so the endpoint is actually receiving the call! afterEach(() => nock. js and nock/lib/recorder. Generated based off the DefinitelyTyped repository [git commit: f3911d711006be676d9e1bcbc7c768b39d1ad81b]. However, when running in Github Actions, they both fail with the same error: nock: FAIL src/ What is the expected behavior? Nock TypeScript definitions should work similarly to how they behaved prior to types being introduced. g. delay () function, if request timeout not set but agent timeout, the delay does not work. recorder. Nock Version 13. Jan 27, 2025 · Some more info: Axios uses the http adapter under NodeJS by default, which delegates to the built-in https module to perform the requests. In some tests, we forgot to adjust the nock, however: This still worked with nock < 14. 74 Setup: I have a Node project (pure Node, no browser bits) written in TypeScript. I found this when trying to make @apollo/datasource-rest use native fetch / undici. 4 Node Version 12. Start using node-mocks-http in your project by running `npm i node-mocks-http`. Chai is the assertion library we've chosen to use for our tests. isDone(), which determines if the expectation were met. I have a simple class which makes fetch call to one endpoint and want to test it by mocking the #7 - GET POST API Testing using NOCK | Mocha Chai Unit Testing in TypeScript & Node JSThis is 7th video of this series, In this video we have covered how t Jun 23, 2019 · I'm working on a Node. setMode ("lockdown") by default to prevent any unexpected outbound requests (see test/helpers. 6 TypeScript Version No response What happened? Example repository on how to mock calls to a soap client in Node. By combining TypeScript's strong typing capabilities with Nock's mocking functionality, you can write more robust and reliable tests for your applications. Oct 19, 2025 · Combining Nock with TypeScript brings the benefits of static typing to the mocking process, making the code more robust and easier to maintain. 0 TypeScript Version No response What happened? I have seen some posts about nock and multipart form data not matching due to it encoding the body (#887) I am having this issue with nock. On December 15th, 2020, AWS announced the general availability of the AWS SDK for JavaScript, version 3 […] Crawler v2 : Advanced and Typescript version of node-crawler Features: Server-side DOM & automatic jQuery insertion with Cheerio (default), Configurable pool size and retries, Control rate limit, Priority queue of requests, let crawler deal for you with charset detection and conversion, If you have prior experience with Crawler v1, for fast migration, please proceed to the section Differences Dec 27, 2021 · Nock does not intercept the subsequent requests (when called from within my code) but only when requests are called directly #2267 Jul 23, 2025 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more. It's true that I'm fighting with this because of how Babel + TypeScript play together but it's a significant enough stack & the change for Nock would be small so I think it would be worth it. abortPendingRequests(); in afterAll () causes memory leak in the unit tests. 0 Jan 28, 2025 · After updating nock from 13. default||https_; During an update from nock version 10 to 11, I am getting a TypeScript compilation error when using put () when the first argument is a string and the second argument is an object. Salesforce) and … Jul 21, 2021 · When testing a function that uses either the TextEncoder or the TextDecoder I get: ReferenceError: TextEncoder is not defined ReferenceError: TextDecoder is not defined I am using jsdom, so why is Repro of missing nock intercept. This also breaks Axios with certain configurations and is a duplicate of closed bug #2860 which is specific to Axios. ts We've installed Mocha and Chai, as well as their types. js and TypeScript and especially writing unit tests in this environment, I found it rather cumbersome to get started with writing Mocha cases with TypeScript, especially using the ECMAScript modules (ESM) packaging. The tests without retry passing with no issue reproducing testcase : Sep 11, 2023 · Super quick note, but if you’re upgrading to the latest axios(v1. consthttp=http_. Dec 8, 2023 · I am using node 18 in my Typescript code and nock library https://www. Contribute to cefn/nock-typescript-jest-example development by creating an account on GitHub. 6. Vitest has a comprehensive list of guides regarding mocking: Mocking Classes Mocking Dates Mocking the File System Mocking Functions Mocking Globals Mocking Modules Mocking Requests Mocking Timers For a simpler and quicker way to get started with mocking, you can check the Cheat Sheet below. Sep 22, 2019 · TypeScript with Express: Type 'typeof import ("express")' has no call signatures Asked 6 years, 1 month ago Modified 1 year, 7 months ago Viewed 44k times Aug 15, 2019 · For TypeScript users – and indeed many non-TS users whose editors interpret the TypeScript defs – the type definitions will be the most useful way to understand how to use the functions. fetch instead of node-fetch. 2 Node 13. beta-8, when run individually or in a "beneficial" order (see my previous comment). 7 to 14. 6 doesn't properly intercept HTTP requests that use the LIST (and probably other non standard) method (except native Node's Fetch client) . cleanAll()) can be used to make sure all mocks are cleaned up after each test case. Jan 28, 2025 · Attempting to match a POST request with body content works correctly on Node. Aug 28, 2024 · Using Mocha with TypeScript for type-checked tests Mocha is a popular testing framework for Node. Jul 18, 2022 · nock / nock Public Notifications You must be signed in to change notification settings Fork 739 Star 12. Installing nock@13 also make the request pass, sorry for not mentioning this in the description above. js to mock url requests. Testing TypeScript with Mocha Typescript is set up and there's a function simpleGreeting defined in src/greetings. DefinitelyTyped Question? Ask any nock. I tried --compilers ts:typescript, but I keep getting errors like: Knock's server-side helper libraries (also known as server-side SDKs) reduce the amount of work required to use Knock's REST APIs, starting with reducing the boilerplate code you have to write when integrating Knock in your server-side application. It’s true that I’m fighting with this because of how Babel + TypeScript play together but it’s a significant enough stack & the change for Nock would be small so I think it would be worth it. That way your tests are isolated to the given file, and in this case to help prevent making real requests. In addition, it is sometimes convenient to have multiple SDK instances in a test. Sep 5, 2019 · What is the expected behavior? Using the test file provided in types/tests. The httpsAgent option becomes the agent option when the request is sent. We care about this because users in their test// suites might be using a library like "nock" which relies on the ability// to monkey-patch and intercept calls to http. Sep 30, 2019 · I wish to mock testing an Dropbox API using nock. 9k Example project showcasing the setup of a golden master test. Check if type definitions are included or install @types/nock separately. 0 Stub TypeScript definitions entry for nock, which provides its own types definitions latest version 11. js and Koa routing functions. We will implement how to mock API calls and write a unit test for API calls using Nock in a React application. 6 to 14. The problem with this solution is that Typescript complains httpAdapter from axios/lib/adapters/http implicitly has the any type. Please avoid duplicates I checked all open bugs and none of them matched my problem. request. Today we welcome a guest blog written by Maciej Radzikowski on aws-sdk-client-mock, a library that allows easy mocking of AWS SDK for JavaScript (v3). Tags: typescript nock I have a Record<string, any> and would like to convert it to an object. Cheat Oct 31, 2022 · Mocha is a popular JavaScript test framework that's often used for testing Node. Latest version: 1. Get started using Mocha for TypeScript testing. I like to use mockDeep from the library: jest-mock-extended to handle Jun 27, 2025 · Reproducible test case none Nock Version 14. I have a complex set of requests that get made often, and I would like to re-use the same set of nock requests for multiple unit tests. It was created as a simplified howto for my hhjs (JavaScript usergroup of Hamburg) talk. Definition are incorrect #2055 Closed robcresswell opened this issue on Jul 23, 2020 · 7 comments Got any nock. Apr 20, 2022 · We recently noticed that using nock. Jan 18, 2025 · I am using node 18 in my Typescript code and nock library https://www. 255 asked Oct 28 '25 12:10 Jul 20, 2016 · Avoid the challenges of testing Node. Also, please create a minimal reproduction with one or two tests that demonstrate the problem clearly 🙏 In TypeScript, you can get the correct typings by doing this: const nock = globalThis["__nock"] as typeof import("nock"); Now, assuming you call nock. It took me hours of detective work to find pieces of functioning examples, documentation and other clues on how to put all this together, so maybe Test Anything Protocol tools for node. DefinitelyTyped Questions and Get Instant Answers from ChatGPT AI: Jan 16, 2019 · The current nock documentation doesn't mention that reply() supports async / Promise-returning functions, but only a callback argument or node. May 31, 2018 · Screencast of nock-record in action. 0, we get the following warning in our Jest tests where both nock and @testcontainers/mongodb (10. Got any nock. Oct 12, 2020 · Our objective is to get Nock working in our Jest typescript tests. However, I want to write tests using Mocha, and that's where I'm having trouble. Jan 22, 2020 · As @Diaboloxx mentioned you should be mocking out your HttpService via the providers setup in your tests. this gist compares using nock vs spinning up a nodejs server to delay the response body. What is Nock? Nock is an HTTP server mocking and expectations library. 8. 17. Oct 19, 2025 · Nock is a popular library in the Node. Aug 6, 2020 · This is the beginning of our unit test. Aug 12, 2024 · 文章浏览阅读576次，点赞4次，收藏8次。Nock 是一个用于 Node. Suddenly the added feature in that version now internally relies on MSWJS 😢 . The biggest thing to remember is that the return is "synchronous", because it is a return of an observable. The API call is mocked using nock, but I am facing issues: the result. x specifications. Oct 2, 2017 · I have a unit test for a ReactJs/Typescript project that has a reference to a module called nock. To see what your call looks like, you can use nock. headers says that each value is a string. 3 What happened? We tried to upgrade, saw as only breaking change the simple line drop support for Node < 18, so we thought finally a simple update. Aug 6, 2024 · Node Version 20. 2. Dec 12, 2024 · I'm not sure how nock handles things exactly under the hood whether it offloads stuff to some other library for it. Oct 4, 2020 · Learn how to mock Express response (and request) objects for unit testing in TypeScript. Improve this page Add a description, image, and links to the nock topic page so that developers can more easily learn about it. Feb 14, 2025 · Discover effective mocking and stubbing techniques in TypeScript testing to enhance your testing skills and create robust applications. For instance, if a module performs HTTP requests to a CouchDB server or makes HTTP requests to the Amazon API, you can test that module in isolation. js, Vuex, TypeScript · With over 7 years of experience as a Full-Stack Developer with a strong focus on frontend development, I specialize in Oct 1, 2024 · We used to fetch the token with GET, but changed it to HEAD at some point. Aug 4, 2022 · We'll use the Nock to find a solution for these problems. What is the actual behavior? When calling with node-fetch, most values appear to be an array of Feb 3, 2025 · Reproducible test case n/a Nock Version 13. typescript mocha sqs aws-sdk-js fp-ts nock sqs-consumer localstack node-soap apinmbrsnl Updated on Mar 1, 2020 TypeScript May 29, 2020 · Nock reply with 302 and 404 throws an HTTPError Asked 4 years, 8 months ago Modified 4 years, 8 months ago Viewed 1k times Aug 24, 2024 · Being relatively new to Node. d. cleanAll() and nock. So what are some good approaches to testing external APIs? A package I've grown to love is nock. js apps. 0, last published: 5 years ago. As a a first failsafe, I Apr 25, 2025 · Tired of writing mock APIs by hand? Learn how to automatically generate and deploy static mock APIs using real recorded data. Maybe someone knows the answer, because unfortunately I have not found anything myself. TypeScript. 3 The text was updated successfully, but these errors were encountered: Copy May 17, 2021 · What is the expected behavior? The TypeScript type for req. js 的 HTTP 服务器模拟和期望库。以下是 Nock 项目的目录结构及其介绍：```nock/├── examples/ # 示例代码├── lib/ # 核心库文件├── test/ # 测试文件├── . Jan 21, 2024 · Learn how to use Nock to mock HTTP requests from an API so you can test endpoints without actually calling them. 4 Node Version v18. Tagged with javascript, typescript, testing. I have a simple class which makes fetch call to one endpoint and want to test it by mocking the response. Jun 24, 2025 · What happened? We're attempting to upgrade to nock 15 so that we can mock out native fetch calls in node and move away from node-fetch, and we're hitting this bug where s3 calls are hanging indefinitely. How does it work? Nock works by overriding Node's http. js using nock and soap packages. Table of Contents How does it work? Install Node version support Use READ THIS! - About interceptors Nov 16, 2018 · In this article you will learn how to easily test out your HTTP requests with a library called Nock. back fails with TypeError: Body is unusable: Body has already been read when making parallel fetch requests with NOCK_BACK_MODE=record#2838 Mock 'http' objects for testing Express, Next. 21. back. In this blog post, we'll explore the fundamental concepts of Nock with TypeScript, learn how to use it effectively, and discover common and best practices. 0 TypeScript Version No response What happened? Nock is currently unable to intercept requests on Node 18 with its native fetch implementation: I am using nock in an angular/typescript server-side application's unit tests. It ensures your mocks align with your API contract, providing type safety and schema validation for both re… TypeScript This is a ‘how to’ article on using Nock to mock HTTP requests during tests, using this example repo. 2, last published: 6 months ago. Feb 2, 2022 · When using nock to test timeout with . We are using nock back like this Apr 29, 2020 · I haven't used nock in the past, but you can just tell the HttpService what to respond with when using jest. 0 TypeScript Version 5. 3 The text was updated successfully, but these errors were encountered: Copy Jan 18, 2025 · I am using node 18 in my Typescript code and nock library https://www. 0. Stub TypeScript definitions entry for nock, which provides its own types definitions. spyOn methods, check the API section first. Repro of missing nock intercept. This still works with nock >= 14. What is the actual behavior? The code compiles with typescript, but throws Jul 23, 2020 · TypeScript types for nock. To combat this, add a definitions file to your project with the contents of axios. js) or reconfigure your typescript compiler (tsc or perhaps babel) to compile into lower version, like ES5. back Why mock HTTP requests during testing? When dealing with code that depends on external services maintaining test coverage and writing reliable tests can be challenging. DefinitelyTyped Questions and Get Instant Answers from ChatGPT AI: Jun 23, 2020 · Seems your JS interpreter doesn't support ES6 or at least it's spread operator (). I'd like to propose that we bring the type definitions in house and maintain them in this repository. I get this type unfortunately by Nock, so I can't change it though. js application's API endpoints. current remains undefined, and Aug 16, 2022 · We'll use the Nock to find a solution for these problems. fn, vi. This article walks you through capturing HTTP interactions with nock, converting them into mocks, and deploying them as API endpoints with AWS CDK. beta-8 (which I guess it shouldn't). But in 14 beta, I get strange behaviours. Does the bug have a test case? no Versions Software Version (s) Nock 12. Reproducible test case https://runkit. js streams. Also, it overrides http. I have a simple class which makes fetch call to one endpoint and want to test it by mocking the #7 - GET POST API Testing using NOCK | Mocha Chai Unit Testing in TypeScript & Node JSThis is 7th video of this series, In this video we have covered how t Oct 15, 2025 · What happened? The Node. Latest version: 11. What is the actual behavior? Prior to nock publishing TypeScrip If you are not familiar with vi. default||http_;consthttps=https_. For TypeScript users – and indeed many non-TS users whose editors interpret the TypeScript defs – the type definitions will be the most useful way to understand how to use the functions. Showing how an initial test run sends out actual HTTP requests, and subsequent runs will use the recordings of the first run to prevent future requests. 10. Nov 2, 2024 · When it comes to testing APIs in TypeScript, Nock is a powerful tool that can help you mock HTTP requests and responses. com/brunoquaresma/63755661db9fc7000800fa7e Nock Version 13. 8, the tests for retried requests on Fetch function are not captured by Nock due to duplicated header values and as a result fail.