99 lines
2.7 KiB
TypeScript
99 lines
2.7 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, vi, beforeEach, afterEach } from 'vitest';
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import { renderHook, act } from '@testing-library/react';
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import { useLineClamp } from '../src/use-line-clamp';
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describe('useLineClamp', () => {
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beforeEach(() => {
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vi.clearAllMocks();
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});
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afterEach(() => {
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vi.restoreAllMocks();
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});
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it('should return contentRef and isClamped', () => {
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const { result } = renderHook(() => useLineClamp());
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expect(result.current.contentRef).toBeDefined();
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expect(result.current.isClamped).toBe(false);
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});
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it('should add and remove resize event listener', () => {
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const addEventListenerSpy = vi.spyOn(window, 'addEventListener');
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const removeEventListenerSpy = vi.spyOn(window, 'removeEventListener');
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const { unmount } = renderHook(() => useLineClamp());
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expect(addEventListenerSpy).toHaveBeenCalledWith(
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'resize',
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expect.any(Function),
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);
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unmount();
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expect(removeEventListenerSpy).toHaveBeenCalledWith(
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'resize',
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expect.any(Function),
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);
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});
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it('should update isClamped when content height changes', () => {
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const mockDiv = document.createElement('div');
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Object.defineProperties(mockDiv, {
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scrollHeight: {
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configurable: true,
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get: () => 100,
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},
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clientHeight: {
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configurable: true,
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get: () => 50,
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},
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});
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const { result } = renderHook(() => useLineClamp());
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// 使用 vi.spyOn 来模拟 contentRef.current
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vi.spyOn(result.current.contentRef, 'current', 'get').mockReturnValue(
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mockDiv,
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);
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// 使用 act 包装异步操作
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act(() => {
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window.dispatchEvent(new Event('resize'));
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});
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expect(result.current.isClamped).toBe(true);
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});
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it('should handle null contentRef', () => {
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const { result } = renderHook(() => useLineClamp());
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// 使用 vi.spyOn 来模拟 contentRef.current 为 null
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vi.spyOn(result.current.contentRef, 'current', 'get').mockReturnValue(null);
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// 使用 act 包装异步操作
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act(() => {
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window.dispatchEvent(new Event('resize'));
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});
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expect(result.current.isClamped).toBe(false);
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});
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});
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