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test: asyncautocomplete loadoptions triggers #898

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4cc7229
fix(mui-autocomplete): expand scroll check area for asyncautocomplete
LauRoxx Mar 5, 2026
afa3552
test(mui-autocomplete): add scroll and fallback loadoptions tests for…
LauRoxx Mar 5, 2026
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137 changes: 80 additions & 57 deletions packages/autocomplete/src/lib/AsyncAutocomplete.test.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ import { server } from '@availity/mock/src/lib/server';
import { QueryClient, QueryClientProvider } from '@tanstack/react-query';

import { AsyncAutocomplete } from './AsyncAutocomplete';
import { mock } from 'node:test';

const api = new AvApi({ name: 'example' } as ApiConfig);

Expand Down Expand Up @@ -182,63 +183,85 @@ describe('AsyncAutocomplete', () => {
});
});

// test('should call loadOptions when scroll to the bottom', async () => {
// const client = new QueryClient();

// render(
// <QueryClientProvider client={client}>
// <AsyncAutocomplete queryKey="test2" loadOptions={loadOptions} limit={10} FieldProps={{ label: 'Test' }} ListboxProps={{style: {maxHeight: '100px'}}} />
// </QueryClientProvider>
// );

// const input = screen.getByRole('combobox');
// fireEvent.click(input);
// fireEvent.keyDown(input, { key: 'ArrowDown' });

// await waitFor(() => {
// expect(screen.getByText('Option 0')).toBeDefined();
// expect(() => screen.getByText('Option 10')).toThrow();
// });

// await act(async () => {
// const options = await screen.findByRole('listbox');
// fireEvent.scroll(options, { target: { scrollTop: options.scrollHeight } });
// });

// await waitFor(() => {
// expect(screen.getByText('Option 10')).toBeDefined();
// expect(() => screen.getByText('Option 20')).toThrow();
// });
// });

// test('should call loadOptions when mouse enters the listbox if not enough options for scroll', async () => {
// const client = new QueryClient();

// render(
// <QueryClientProvider client={client}>
// <AsyncAutocomplete queryKey="test2" loadOptions={loadOptions} limit={5} FieldProps={{ label: 'Test' }} ListboxProps={{style: {maxHeight: '150px'}}} />
// </QueryClientProvider>
// );

// const input = screen.getByRole('combobox');
// fireEvent.click(input);
// fireEvent.keyDown(input, { key: 'ArrowDown' });

// await waitFor(() => {
// expect(screen.getByText('Option 0')).toBeDefined();
// expect(() => screen.getByText('Option 5')).toThrow();
// });

// await act(async () => {
// const options = await screen.findByRole('listbox');
// fireEvent.mouseEnter(options);
// });

// await waitFor(() => {
// expect(screen.getByText('Option 5')).toBeDefined();
// expect(() => screen.getByText('Option 10')).toThrow();
// });
// });
test('should call loadOptions when scroll to the bottom', async () => {
const mockLoadOptions = jest.fn(loadOptions);
const client = new QueryClient();

render(
<QueryClientProvider client={client}>
<AsyncAutocomplete queryKey="test-loadoptions-scroll" loadOptions={mockLoadOptions} limit={10} FieldProps={{ label: 'Test' }} />
</QueryClientProvider>
);

const input = screen.getByRole('combobox');
fireEvent.click(input);
fireEvent.keyDown(input, { key: 'ArrowUp' });

const listbox = await screen.findByRole('listbox');
Object.defineProperty(listbox, 'scrollHeight', { value: 500, writable: true });
Object.defineProperty(listbox, 'clientHeight', { value: 100, writable: true });
Object.defineProperty(listbox, 'scrollTop', { value: 0, writable: true });

// wait for no-scroll loading fallback to finish before testing scroll behavior
await waitFor(() => expect(() => screen.getByAltText('Loading')).toThrow());
const initialCallCount = mockLoadOptions.mock.calls.length;

fireEvent.scroll(listbox, { target: { scrollTop: 200 } });

// should not loadOptions since not scrolled to bottom
await waitFor(() => {
expect(mockLoadOptions).toHaveBeenCalledTimes(initialCallCount);
});

fireEvent.scroll(listbox, { target: { scrollTop: 400 } });

await waitFor(() => {
expect(mockLoadOptions).toHaveBeenCalledTimes(initialCallCount + 1);
});
});

test('should call loadOptions if more options available and not enough options for scroll', async () => {
const mockLoadOptions = jest.fn(loadOptions);
const client = new QueryClient();

render(
<QueryClientProvider client={client}>
<AsyncAutocomplete
queryKey="test-loadOptions-noscroll"
loadOptions={mockLoadOptions}
limit={5}
FieldProps={{ label: 'Test' }}
/>
</QueryClientProvider>
);

const input = screen.getByRole('combobox');
fireEvent.click(input);
fireEvent.keyDown(input, { key: 'ArrowDown' });

await waitFor(() => {
expect(mockLoadOptions).toHaveBeenCalled();
});

// should load more options until enough options for scroll or no more options to load
const listbox = await screen.findByRole('listbox');
Object.defineProperty(listbox, 'scrollHeight', { value: 500, writable: true });
Object.defineProperty(listbox, 'clientHeight', { value: 100, writable: true });
Object.defineProperty(listbox, 'scrollTop', { value: 0, writable: true });

await waitFor(() => expect(() => screen.getByAltText('Loading')).toThrow());

// count number of calls before satisfying scrollable condition
const maxCallCount = mockLoadOptions.mock.calls.length;

fireEvent.pointerEnter(listbox);

// should not fallback to load more options as scrollable condition is satisfied
await waitFor(() => {
expect(mockLoadOptions).toHaveBeenCalledTimes(maxCallCount);
});
});


test('should search with input value', async () => {
const mockLoadOptions = jest.fn(async () => ({ options: [{ label: 'Option 1' }], hasMore: false, offset: 50 }));
Expand Down
4 changes: 2 additions & 2 deletions packages/autocomplete/src/lib/AsyncAutocomplete.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -112,7 +112,7 @@ export const AsyncAutocomplete = <
const difference = listboxNode.scrollHeight - (listboxNode.scrollTop + listboxNode.clientHeight);

// Only fetch if we are near the bottom, not already fetching, and there are more results
if (difference <= 5 && !isLoading && !isFetching && hasNextPage) {
if (difference <= 10 && !isLoading && !isFetching && hasNextPage) {
fetchNextPage();
}
}
Expand Down Expand Up @@ -142,7 +142,7 @@ export const AsyncAutocomplete = <
...ListboxProps,
ref: setListboxRef,
onScroll: handleAddingOptions,
onPointerEnter: handleAddingOptions,
onPointerEnter: handleAddingOptions
}}
/>
);
Expand Down