react-query/packages/vue-query/src/__tests__/useInfiniteQuery.test.ts

import { afterEach, beforeEach, describe, expect, test, vi } from 'vitest'
import { sleep } from '@tanstack/query-test-utils'
import { useInfiniteQuery } from '../useInfiniteQuery'
import { infiniteQueryOptions } from '../infiniteQueryOptions'

vi.mock('../useQueryClient')

describe('useQuery', () => {
  beforeEach(() => {
    vi.useFakeTimers()
  })

  afterEach(() => {
    vi.useRealTimers()
  })

  test('should properly execute infinite query', async () => {
    const { data, fetchNextPage, status } = useInfiniteQuery({
      queryKey: ['infiniteQuery'],
      queryFn: ({ pageParam }) =>
        sleep(0).then(() => 'data on page ' + pageParam),
      initialPageParam: 0,
      getNextPageParam: () => 12,
    })

    expect(data.value).toStrictEqual(undefined)
    expect(status.value).toStrictEqual('pending')

    await vi.advanceTimersByTimeAsync(0)

    expect(data.value).toStrictEqual({
      pageParams: [0],
      pages: ['data on page 0'],
    })
    expect(status.value).toStrictEqual('success')

    fetchNextPage()

    await vi.advanceTimersByTimeAsync(0)

    expect(data.value).toStrictEqual({
      pageParams: [0, 12],
      pages: ['data on page 0', 'data on page 12'],
    })
    expect(status.value).toStrictEqual('success')
  })
  test('should properly execute infinite query using infiniteQueryOptions', async () => {
    const options = infiniteQueryOptions({
      queryKey: ['infiniteQueryOptions'],
      queryFn: ({ pageParam }) =>
        sleep(0).then(() => 'data on page ' + pageParam),
      initialPageParam: 0,
      getNextPageParam: () => 12,
    })

    const { data, fetchNextPage, status } = useInfiniteQuery(options)

    expect(data.value).toStrictEqual(undefined)
    expect(status.value).toStrictEqual('pending')

    await vi.advanceTimersByTimeAsync(0)

    expect(data.value).toStrictEqual({
      pageParams: [0],
      pages: ['data on page 0'],
    })
    expect(status.value).toStrictEqual('success')

    fetchNextPage()

    await vi.advanceTimersByTimeAsync(0)

    expect(data.value).toStrictEqual({
      pageParams: [0, 12],
      pages: ['data on page 0', 'data on page 12'],
    })
    expect(status.value).toStrictEqual('success')
  })
})