testdouble.js (AKA td.js)
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| testdouble.js (AKA td.js) | AVA | |
|---|---|---|
| 4 | - | |
| 1,407 | 7 | |
| 0.3% | - | |
| 6.5 | 0.0 | |
| about 1 month ago | - | |
| JavaScript | JavaScript | |
| MIT License | MIT License |
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testdouble.js (AKA td.js)
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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.
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Tracking mentions began in Dec 2020.
What are some alternatives?
jest - Delightful JavaScript Testing.
tape - tap-producing test harness for node and browsers
mocha - ☕️ simple, flexible, fun javascript test framework for node.js & the browser
loadtest - Runs a load test on the selected URL. Fast and easy to use. Can be integrated in your own workflow using the API.
tap - Test Anything Protocol tools for node
Sinon.JS - Test spies, stubs and mocks for JavaScript.
Cucumber.js - Cucumber for JavaScript
uvu - uvu is an extremely fast and lightweight test runner for Node.js and the browser
nyc - the Istanbul command line interface
WebdriverIO - Next-gen browser and mobile automation test framework for Node.js