@storybook/test
Advanced tools
Changelog
8.2.0
Hold onto your hats! Storybook 8.2 has dropped, packed with a treasure trove of new features and bug fixes:
beforeAllplay functiontocbot - #28318, thanks @shilman!--no-dev option to init - #26918, thanks @fastfrwrd!--dev and --no-dev options to storybook init CLI - #26918, thanks @fastfrwrd!@storybook/addon-svelte-csf when initializing new projects - #27070, thanks @benmccann!beforeAll hook - #28255, thanks @ghengeveld!pkg-dir to fd-package-json - #28270, thanks @43081j!loading -> rendering -> playing - #28431, thanks @kasperpeulen!.stories.mdx handling - #25973, thanks @JReinhold!CJS for core/components - #28440, thanks @ndelangen!preview.js globals to initialGlobals - #27517, thanks @shilman!markdown-to-jsx to v7.4.5 - #26694, thanks @xyy94813!webpack-virtual-modules to 0.6.0 - #27102, thanks @fyodorovandrei!read-pkg-up to fd-package-json - #28272, thanks @43081j!doctrine with jsdoc-type-pratt-parser - #26305, thanks @43081j!Stories block, error when referenced in MDX - #28434, thanks @kasperpeulen!Typeset Doc block fontSizes type - #26475, thanks @noranda!env.bugfixes in SWC so destructuring is never transpiled - #28363, thanks @kasperpeulen!mount in react, svelte, and vue renderers - #28385, thanks @kasperpeulen!CompatibleString - #27180, thanks @sni-J!Readme
The @storybook/test package contains utilities for testing your stories inside play functions.
Install the package by adding the @storybook/test dev dependency:
npm install -D @storybook/test
pnpm add -D @storybook/test
yarn add -D @storybook/test
Note that this package is not an addon, so you don't have to add it to your main.js/main.ts file.
The test package exports instrumented versions of @vitest/spy, @vitest/expect (based on chai), @testing-library/dom and @testing-library/user-event. The instrumentation makes sure you can debug those methods in the addon-interactions panel.
// Button.stories.ts
import { Button } from './Button';
import { within, userEvent, expect, fn } from '@storybook/test';
export default {
component: Button,
args: {
onClick: fn(),
},
};
export const Demo = {
play: async ({ args, canvasElement }) => {
const canvas = within(canvasElement);
await userEvent.click(canvas.getByRole('button'));
await expect(args.onClick).toHaveBeenCalled();
},
};
FAQs
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The npm package @storybook/test receives a total of 1,620,165 weekly downloads. As such, @storybook/test popularity was classified as popular.
We found that @storybook/test demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 11 open source maintainers collaborating on the project.
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