59 lines
1.9 KiB
TypeScript
59 lines
1.9 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 { describe, it, expect } from 'vitest';
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import { renderHook } from '@testing-library/react';
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import { useInitialValue } from '../src/use-initial-value';
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describe('useInitialValue', () => {
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it('should return the initial value', () => {
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const initialValue = 'test';
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const { result } = renderHook(() => useInitialValue(initialValue));
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expect(result.current).toBe(initialValue);
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});
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it('should maintain the initial value even if input changes', () => {
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let value = 'initial';
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const { result, rerender } = renderHook(() => useInitialValue(value));
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expect(result.current).toBe('initial');
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value = 'changed';
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rerender();
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expect(result.current).toBe('initial');
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});
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it('should work with different types', () => {
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const numberValue = 42;
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const { result: numberResult } = renderHook(() =>
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useInitialValue(numberValue),
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);
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expect(numberResult.current).toBe(42);
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const objectValue = { key: 'value' };
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const { result: objectResult } = renderHook(() =>
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useInitialValue(objectValue),
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);
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expect(objectResult.current).toEqual({ key: 'value' });
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const arrayValue = [1, 2, 3];
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const { result: arrayResult } = renderHook(() =>
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useInitialValue(arrayValue),
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);
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expect(arrayResult.current).toEqual([1, 2, 3]);
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});
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});
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