47 lines
1.2 KiB
TypeScript
47 lines
1.2 KiB
TypeScript
/*
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* Copyright (c) 2024 Huawei Technologies Co.,Ltd.
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*
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* openInula is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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*
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* http://license.coscl.org.cn/MulanPSL2
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*
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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import { reactive, computed, watch } from '../src';
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describe('watch', () => {
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it('should not track the unused reactive', () => {
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const cond = reactive(true);
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const a = reactive(1);
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const b = reactive(1);
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const fn = jest.fn();
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watch(() => {
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fn();
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if (cond.get()) {
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a.get();
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} else {
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b.get();
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}
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});
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expect(fn).toBeCalledTimes(1);
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a.set(2);
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expect(fn).toBeCalledTimes(2);
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b.set(2);
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// should not trigger fn
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expect(fn).toBeCalledTimes(2);
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cond.set(false);
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expect(fn).toBeCalledTimes(3);
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a.set(3);
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// should not trigger fn
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expect(fn).toBeCalledTimes(3);
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b.set(3);
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expect(fn).toBeCalledTimes(4);
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});
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});
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