import { renderHook } from '@testing-library/react-hooks'; import { useAmbientTRenderEngine } from '../../TRenderEngineProvider'; describe('useAmbientTRenderEngine', () => { it('should warn user when there is no ambient TRenderEngine', () => { console.error = jest.fn(); renderHook(() => useAmbientTRenderEngine()); expect(console.error).toHaveBeenCalledWith( 'TRenderEngineProvider is missing in the render tree.' ); }); });