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@uifabric/jest-serializer-merge-styles
Advanced tools
Provides a Jest serializer for @uifabric/merge-styles
which expands class names into css rules.
When using Jest snapshot testing with components that use @uifabric/merge-styles
, class names may be rendered as such in the snapshot (Note the css-2342
generated class name):
<div className='ms-Foo css-2432'>
Hello world
</div>
Using this serializer, the generated css-2342
class name will be auto expanded to the rules resolved by merge-styles:
<div
className=
ms-Foo
{
background-color: #f4f4f4;
box-sizing: border-box;
color: #333333;
cursor: pointer;
}
&:hover {
background-color: #f8f8f8;
}
>
Hello world
</div>
This means that your tests can pass reliably (no generated class names) and your rules get included in the snapshot. (Snapshots need updates when css is altered.)
In your jest.config.js (or appropriate config location) include a snapshotSerializers
array that references this package:
module.exports = {
snapshotSerializers: [path.resolve(__dirname, 'jest-serializer-merge-styles')],
};
See Testing for more detailed usage.
FAQs
Jest serializer for merge-styles.
We found that @uifabric/jest-serializer-merge-styles demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 6 open source maintainers collaborating on the project.
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