storybook/docs/snippets/vue/portable-stories-vitest-with-loaders.ts.mdx

```ts
// Button.test.ts
import { test } from 'vitest';
import { render } from '@testing-library/vue';
import { composeStory } from '@storybook/vue3';

import meta, { Primary } from './Button.stories';

test('applies the loaders and renders', async () => {
  const PrimaryStory = composeStory(Primary, meta);

  // First, load the data for the story
  await PrimaryStory.load();
  
  // Then, render the story
  render(PrimaryStory());
});
```