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