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import { describe, expect, test } from 'vitest';
import { usePagination } from './use-pagination';
describe('usePagination', () => {
test('returns all pages when total pages are less than display limit', () => {
const result = usePagination({
currentPage: 2,
totalPages: 4,
paginationItemsToDisplay: 5,
});
expect(result.pages).toEqual([1, 2, 3, 4]);
expect(result.showLeftEllipsis).toBe(false);
expect(result.showRightEllipsis).toBe(false);
});
test('shows only right ellipsis near the start of the range', () => {
const result = usePagination({
currentPage: 1,
totalPages: 10,
paginationItemsToDisplay: 5,
});
expect(result.pages).toEqual([1, 2, 3, 4]);
expect(result.showLeftEllipsis).toBe(false);
expect(result.showRightEllipsis).toBe(true);
});
test('shows both ellipses around middle pages', () => {
const result = usePagination({
currentPage: 5,
totalPages: 10,
paginationItemsToDisplay: 5,
});
expect(result.pages).toEqual([4, 5, 6]);
expect(result.showLeftEllipsis).toBe(true);
expect(result.showRightEllipsis).toBe(true);
});
test('shows only left ellipsis near the end of the range', () => {
const result = usePagination({
currentPage: 10,
totalPages: 10,
paginationItemsToDisplay: 5,
});
expect(result.pages).toEqual([7, 8, 9, 10]);
expect(result.showLeftEllipsis).toBe(true);
expect(result.showRightEllipsis).toBe(false);
});
});
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