In this example we have a simple hook called useLog
that returns a method. How do I test that it gets returned with react-hooks-testing-library. I am trying to figure out how to write the expect.
The hooks useLog:
import { useCallback } from 'react'
export const useLog = () => {
const log = useCallback(() => console.log("hello World"), [])
return { log }
}
test:
import { renderHook } from '@testing-library/react-hooks'
import {useLog} from "./useCounter";
const log = jest.fn()
test('should increment counter', () => {
const { result } = renderHook(() => useLog())
expect(result.current.log).toHaveReturnedWith(log);
})
what I get:
Matcher error: received value must be a mock function
Received has type: function
Received has value: [Function anonymous]
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