/* * Copyright 2025 coze-dev Authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import { useRef, useState } from 'react'; import { expect, it, vi } from 'vitest'; import { act, renderHook } from '@testing-library/react-hooks'; import { useEventCallback } from '../src/hooks/use-event-callback'; it('get a fixed reference', () => { const print = vi.fn(); const { result } = renderHook(() => { const [count, setCount] = useState(0); const fn = useEventCallback(print); const fnRef = useRef(fn); const isSame = fnRef.current === fn; const update = setCount; fn(count); return { isSame, update, }; }); act(() => { result.current.update(100); }); expect(result.current.isSame).toBe(true); expect(print.mock.calls.length).toBe(2); expect(print.mock.calls[1][0]).toBe(100); act(() => { result.current.update(200); }); expect(result.current.isSame).toBe(true); expect(print.mock.calls.length).toBe(3); expect(print.mock.calls[2][0]).toBe(200); });