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import { describe, expectTypeOf, it } from 'vitest'
import { queryOptions, useQuery } from '../index'
describe('initialData', () => {
describe('Config object overload', () => {
it('TData should always be defined when initialData is provided as an object', () => {
const { data } = useQuery(() => ({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
initialData: { wow: true },
}))
expectTypeOf(data).toEqualTypeOf<{ wow: boolean }>()
})
it('TData should be defined when passed through queryOptions', () => {
const options = queryOptions({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
initialData: { wow: true },
})
const { data } = useQuery(() => options)
expectTypeOf(data).toEqualTypeOf<{ wow: boolean }>()
})
it('TData should always be defined when initialData is provided as a function which ALWAYS returns the data', () => {
const { data } = useQuery(() => ({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
initialData: () => ({ wow: true }),
}))
expectTypeOf(data).toEqualTypeOf<{ wow: boolean }>()
})
it('TData should have undefined in the union when initialData is NOT provided', () => {
const { data } = useQuery(() => ({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
}))
expectTypeOf(data).toEqualTypeOf<{ wow: boolean } | undefined>()
})
it('TData should have undefined in the union when initialData is provided as a function which can return undefined', () => {
const { data } = useQuery(() => ({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
initialData: () => undefined as { wow: boolean } | undefined,
}))
expectTypeOf(data).toEqualTypeOf<{ wow: boolean } | undefined>()
})
})
describe('Query key overload', () => {
it('TData should always be defined when initialData is provided', () => {
const { data } = useQuery(() => ({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
initialData: { wow: true },
}))
expectTypeOf(data).toEqualTypeOf<{ wow: boolean }>()
})
it('TData should have undefined in the union when initialData is NOT provided', () => {
const { data } = useQuery(() => ({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
}))
expectTypeOf(data).toEqualTypeOf<{ wow: boolean } | undefined>()
})
})
describe('Query key and func', () => {
it('TData should always be defined when initialData is provided', () => {
const { data } = useQuery(() => ({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
initialData: { wow: true },
}))
expectTypeOf(data).toEqualTypeOf<{ wow: boolean }>()
})
it('TData should have undefined in the union when initialData is NOT provided', () => {
const { data } = useQuery(() => ({
queryKey: ['key'],
queryFn: () => ({ wow: true }),
}))
expectTypeOf(data).toEqualTypeOf<{ wow: boolean } | undefined>()
})
})
})
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