Transforms BDD input into data-driven snapshot
npm install @bahmutov/data-driven> Transforms BDD input into data-driven snapshot
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Requires Node version 6 or above.
``sh`
npm install --save @bahmutov/data-driven
Data-driven snapshot testing takes as an input a pure function and a bunch of arguments.
`js`
// is this data-driven test? for example
snapshot(isPrime, 1, 2, 3, 4, 5)
// or
snapshot(add, [1, 2], [-5, 5], [4, 6])
This module detects the above cases, and also has a utility method to compute the expected
result. From snap-shot frameworks, like [snap-shot][snap-shot] and [snap-shot-it][snap-shot-it]
when getting a value check if user wants data-driven value, and if yes, compute it.
`js`
const {isDataDriven, dataDriven} = require('@bahmutov/data-driven')
function snapshot(what) {
if (isDataDriven(arguments)) {
what = dataDriven(what, Array.from(arguments).slice(1))
}
}
A typical value transformation would be
`js``
const results = dataDriven(isPrime, [1, 2, 3])
/* results is
{
name: 'isPrime',
behavior: [
{
given: 1,
expect: false
},
{
given: 2,
expect: true
},
{
given: 3,
expect: true
}
]
}
*/
[snap-shot]: https://github.com/bahmutov/snap-shot
[snap-shot-it]: https://github.com/bahmutov/snap-shot-it
Author: Gleb Bahmutov <gleb.bahmutov@gmail.com> © 2017
* @bahmutov
* glebbahmutov.com
* blog
License: MIT - do anything with the code, but don't blame me if it does not work.
Support: if you find any problems with this module, email / tweet /
open issue on Github
Copyright (c) 2017 Gleb Bahmutov <gleb.bahmutov@gmail.com>
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
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copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
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The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
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[npm-icon]: https://nodei.co/npm/@bahmutov/data-driven.svg?downloads=true
[npm-url]: https://npmjs.org/package/@bahmutov/data-driven
[ci-image]: https://travis-ci.org/bahmutov/data-driven.svg?branch=master
[ci-url]: https://travis-ci.org/bahmutov/data-driven
[semantic-image]: https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg
[semantic-url]: https://github.com/semantic-release/semantic-release
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[standard-url]: http://standardjs.com/