LandonSchropp Testing React Hooks
Use renderHook and act from @testing-library/react. Don't write a probe component — renderHook is the affordance for testing a hook in isolation.
import { useMyHook } from "./use-my-hook.ts";
import { act, renderHook } from "@testing-library/react";
const { result, rerender, unmount } = renderHook(() => useMyHook(arg));
expect(result.current).toBe(/* ... */);
renderHook needs DOM globals. A typical React project provides them through its configured test environment (jsdom or happy-dom), so no per-test setup is required.