sinon

JavaScript test spies, stubs and mocks.

v19.0.2 URL: https://unpkg.com/sinon@19.0.2/lib/sinon.js

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sinon test testing unit stub spy fake time clock mock xhr assert

tinyspy

A minimal fork of nanospy, with more features

v3.0.2 URL: https://unpkg.com/tinyspy@3.0.2/dist/index.cjs

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spy mock typescript method

@mswjs/interceptors

Low-level HTTP/HTTPS/XHR/fetch request interception library.

v0.36.10 URL: https://unpkg.com/@mswjs/interceptors@0.36.10/lib/node/index.js

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request intercept http https xmlhttprequest xhr fetch low-level mock spy testing

fetch-mock

Mock http requests made using fetch

v12.1.0 URL: https://unpkg.com/fetch-mock@12.1.0/dist/cjs/index.js

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fetch http mock testing spy stub

serverless-spy

CDK-based library for writing elegant integration tests on AWS serverless architecture and an additional web console to monitor events in real time.

v2.2.4 URL: https://unpkg.com/serverless-spy@2.2.4/lib/index.js

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cdk aws testing jest serverless spy vitest lambda sqs sns dynamodb eventbridge