react navigation : useIsFocused usage fails test cases

I added the useIsFocused() to my file to accommodate focus event like

file.js

import { useIsFocused, useNavigation } from "@react-navigation/native"const navigation = useNavigation()    const isFocused = useIsFocused()useEffect(() => {      getData(somedata)    }, [isFocused])

But when i run my test file, the test fails

TypeError: navigation.isFocused is not a function

am I missing something here??