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test(accordion): lazy mount behavior (#1847) #2035

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test(accordion): lazy mount behavior (#1847) #2035

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58 changes: 58 additions & 0 deletions src/components/ui/Accordion/tests/Accordion.lazyMount.test.tsx
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Original file line number Diff line number Diff line change
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import React from 'react';
import { render, screen } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import Accordion from '../Accordion';

describe('Accordion lazy mount behavior', () => {
test('does not mount collapsed content by default', () => {
render(
<Accordion.Root type="single" defaultValue="">
<Accordion.Item value="one">
<Accordion.Header>
<Accordion.Trigger>Section one</Accordion.Trigger>
</Accordion.Header>
<Accordion.Content>Panel one</Accordion.Content>
</Accordion.Item>
</Accordion.Root>
);

expect(screen.getByText('Section one')).toBeInTheDocument();
expect(screen.queryByText('Panel one')).not.toBeInTheDocument();
});

test('mounts content after opening', async() => {
const user = userEvent.setup();

render(
<Accordion.Root type="single" collapsible>
<Accordion.Item value="one">
<Accordion.Header>
<Accordion.Trigger>Section one</Accordion.Trigger>
</Accordion.Header>
<Accordion.Content>Panel one</Accordion.Content>
</Accordion.Item>
</Accordion.Root>
);

expect(screen.queryByText('Panel one')).not.toBeInTheDocument();
await user.click(screen.getByText('Section one'));
expect(screen.getByText('Panel one')).toBeInTheDocument();
});

test('forceMount keeps content mounted while closed', () => {
render(
<Accordion.Root type="single" value="">
<Accordion.Item value="one">
<Accordion.Header>
<Accordion.Trigger>Section one</Accordion.Trigger>
</Accordion.Header>
<Accordion.Content forceMount>Mounted panel</Accordion.Content>
</Accordion.Item>
</Accordion.Root>
);

const panel = screen.getByText('Mounted panel');
expect(panel).toBeInTheDocument();
expect(panel.closest('[data-state="closed"]')).toBeTruthy();
});
});
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