refactor(qrcode): 提取独立组件并添加单元测试

- 创建 pages/QrCode/types.ts 定义状态类型接口 - 提取 QrCodePreview 组件用于二维码预览和操作 - 提取 ImageUploader 组件封装图片上传、拖拽、粘贴逻辑 - 重构 UrlToQrCodeSection 状态提升到父组件 - 重构 QrCodeToUrlSection 通过回调传递解析结果 - 更新主页面 index.tsx 集中管理所有状态 - 为 QrCodePreview 和 ImageUploader 添加单元测试 (23 个用例)
2026-05-20 21:59:57 +08:00
parent 9c03c585a8
commit 2870e01610
8 changed files with 865 additions and 241 deletions
@@ -0,0 +1,208 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { render, screen, fireEvent, act } from '@testing-library/react';
+import ImageUploader from '@/components/ImageUploader';
+
+// 模拟 URL API
+const mockCreateObjectURL = vi.fn();
+const mockRevokeObjectURL = vi.fn();
+Object.defineProperty(window.URL, 'createObjectURL', { value: mockCreateObjectURL });
+Object.defineProperty(window.URL, 'revokeObjectURL', { value: mockRevokeObjectURL });
+
+// 模拟 showMessage
+vi.mock('@/components/GlobalSnackbar', () => ({
+  useSnackbar: () => ({
+    showMessage: vi.fn(),
+  }),
+}));
+
+describe('ImageUploader 组件', () => {
+  const mockOnFileChange = vi.fn();
+  const mockOnClearFile = vi.fn();
+  const mockOnPreviewUrlChange = vi.fn();
+  const mockOnDraggingChange = vi.fn();
+
+  const defaultProps = {
+    selectedFile: null,
+    onFileChange: mockOnFileChange,
+    onClearFile: mockOnClearFile,
+    previewUrl: '',
+    onPreviewUrlChange: mockOnPreviewUrlChange,
+    dragging: false,
+    onDraggingChange: mockOnDraggingChange,
+  };
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    mockCreateObjectURL.mockReturnValue('blob:test-url');
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+    vi.resetAllMocks();
+  });
+
+  describe('渲染测试', () => {
+    it('当没有选中文件时应显示上传提示', () => {
+      render(<ImageUploader {...defaultProps} />);
+      expect(screen.getByText('qrCode:clickToUpload')).toBeInTheDocument();
+      expect(screen.getByText('qrCode:supportFormats')).toBeInTheDocument();
+    });
+
+    it('当没有选中文件时应显示 ImageIcon', () => {
+      render(<ImageUploader {...defaultProps} />);
+      expect(screen.getByTestId('ImageIcon')).toBeInTheDocument();
+    });
+
+    it('当选中文件时应显示文件预览', () => {
+      const mockFile = new File(['test'], 'test.png', { type: 'image/png' });
+      render(
+        <ImageUploader {...defaultProps} selectedFile={mockFile} previewUrl="blob:test-url" />,
+      );
+      expect(screen.getByText('test.png')).toBeInTheDocument();
+      expect(screen.getByText('qrCode:clickToChange')).toBeInTheDocument();
+    });
+
+    it('当选中文件时应显示预览图片', () => {
+      const mockFile = new File(['test'], 'test.png', { type: 'image/png' });
+      render(
+        <ImageUploader {...defaultProps} selectedFile={mockFile} previewUrl="blob:test-url" />,
+      );
+      const img = screen.getByAltText('QR Code Preview');
+      expect(img).toBeInTheDocument();
+      expect(img).toHaveAttribute('src', 'blob:test-url');
+    });
+
+    it('当选中文件时应显示清除按钮', () => {
+      const mockFile = new File(['test'], 'test.png', { type: 'image/png' });
+      render(
+        <ImageUploader {...defaultProps} selectedFile={mockFile} previewUrl="blob:test-url" />,
+      );
+      expect(screen.getByTestId('ClearIcon')).toBeInTheDocument();
+    });
+
+    it('应包含隐藏的文件输入框', () => {
+      render(<ImageUploader {...defaultProps} />);
+      const input = document.getElementById('qr-code-upload') as HTMLInputElement;
+      expect(input).toBeInTheDocument();
+      expect(input).toHaveAttribute('type', 'file');
+      expect(input).toHaveAttribute('accept', 'image/*');
+    });
+  });
+
+  describe('文件选择交互', () => {
+    it('选择文件时应调用 onFileChange 和 onPreviewUrlChange', async () => {
+      render(<ImageUploader {...defaultProps} />);
+      const input = document.getElementById('qr-code-upload') as HTMLInputElement;
+      const mockFile = new File(['test'], 'test.png', { type: 'image/png' });
+
+      await act(async () => {
+        fireEvent.change(input, { target: { files: [mockFile] } });
+      });
+
+      expect(mockOnFileChange).toHaveBeenCalledWith(mockFile);
+      expect(mockCreateObjectURL).toHaveBeenCalledWith(mockFile);
+      expect(mockOnPreviewUrlChange).toHaveBeenCalledWith('blob:test-url');
+    });
+  });
+
+  describe('拖拽交互', () => {
+    it('拖拽进入时应调用 onDraggingChange(true)', () => {
+      const { container } = render(<ImageUploader {...defaultProps} />);
+      const dropzone = container.firstChild as HTMLElement;
+
+      fireEvent.dragOver(dropzone);
+      expect(mockOnDraggingChange).toHaveBeenCalledWith(true);
+    });
+
+    it('拖拽离开时应调用 onDraggingChange(false)', () => {
+      const { container } = render(<ImageUploader {...defaultProps} />);
+      const dropzone = container.firstChild as HTMLElement;
+
+      fireEvent.dragLeave(dropzone);
+      expect(mockOnDraggingChange).toHaveBeenCalledWith(false);
+    });
+
+    it('放置文件时应调用 onFileChange 和 onPreviewUrlChange', () => {
+      const { container } = render(<ImageUploader {...defaultProps} />);
+      const dropzone = container.firstChild as HTMLElement;
+      const mockFile = new File(['test'], 'test.png', { type: 'image/png' });
+
+      const dropEvent = new Event('drop', { bubbles: true });
+      Object.defineProperty(dropEvent, 'dataTransfer', {
+        value: {
+          files: [mockFile],
+        },
+      });
+      Object.defineProperty(dropEvent, 'preventDefault', {
+        value: vi.fn(),
+      });
+
+      fireEvent(dropzone, dropEvent);
+
+      expect(mockOnDraggingChange).toHaveBeenCalledWith(false);
+      expect(mockOnFileChange).toHaveBeenCalledWith(mockFile);
+    });
+  });
+
+  describe('清除文件功能', () => {
+    it('点击清除按钮时应调用 onClearFile', () => {
+      const mockFile = new File(['test'], 'test.png', { type: 'image/png' });
+      render(
+        <ImageUploader {...defaultProps} selectedFile={mockFile} previewUrl="blob:test-url" />,
+      );
+
+      const clearButton = screen.getByTestId('ClearIcon').closest('button')!;
+      fireEvent.click(clearButton);
+
+      expect(mockRevokeObjectURL).toHaveBeenCalledWith('blob:test-url');
+      expect(mockOnClearFile).toHaveBeenCalledTimes(1);
+    });
+
+    it('清除文件时应撤销预览 URL', () => {
+      const mockFile = new File(['test'], 'test.png', { type: 'image/png' });
+      render(
+        <ImageUploader {...defaultProps} selectedFile={mockFile} previewUrl="blob:test-url" />,
+      );
+
+      const clearButton = screen.getByTestId('ClearIcon').closest('button')!;
+      fireEvent.click(clearButton);
+
+      expect(mockRevokeObjectURL).toHaveBeenCalledWith('blob:test-url');
+    });
+  });
+
+  describe('粘贴功能', () => {
+    it('监听粘贴事件', () => {
+      const addEventListenerSpy = vi.spyOn(document, 'addEventListener');
+      render(<ImageUploader {...defaultProps} />);
+
+      expect(addEventListenerSpy).toHaveBeenCalledWith('paste', expect.any(Function));
+    });
+
+    it('组件卸载时应移除粘贴事件监听', () => {
+      const removeEventListenerSpy = vi.spyOn(document, 'removeEventListener');
+      const { unmount } = render(<ImageUploader {...defaultProps} />);
+
+      unmount();
+
+      expect(removeEventListenerSpy).toHaveBeenCalledWith('paste', expect.any(Function));
+    });
+  });
+
+  describe('样式测试', () => {
+    it('拖拽状态时应应用拖拽样式', () => {
+      const { container } = render(<ImageUploader {...defaultProps} dragging={true} />);
+      const dropzone = container.firstChild as HTMLElement;
+      expect(dropzone).toBeInTheDocument();
+    });
+
+    it('有文件时应应用有文件样式', () => {
+      const mockFile = new File(['test'], 'test.png', { type: 'image/png' });
+      const { container } = render(
+        <ImageUploader {...defaultProps} selectedFile={mockFile} previewUrl="blob:test-url" />,
+      );
+      const dropzone = container.firstChild as HTMLElement;
+      expect(dropzone).toBeInTheDocument();
+    });
+  });
+});
@@ -0,0 +1,92 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { render, screen, fireEvent } from '@testing-library/react';
+import QrCodePreview from '@/components/QrCodePreview';
+
+describe('QrCodePreview 组件', () => {
+  const mockOnDownload = vi.fn();
+  const mockOnCopy = vi.fn();
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+    vi.resetAllMocks();
+  });
+
+  describe('渲染测试', () => {
+    it('当 qrCodeDataUrl 为空时应显示占位文本', () => {
+      render(<QrCodePreview qrCodeDataUrl="" onDownload={mockOnDownload} onCopy={mockOnCopy} />);
+      expect(screen.getByText('qrCode:qrCodeWillShow')).toBeInTheDocument();
+    });
+
+    it('当 qrCodeDataUrl 有值时应显示二维码图片', () => {
+      const testDataUrl = 'data:image/png;base64,test123';
+      render(
+        <QrCodePreview
+          qrCodeDataUrl={testDataUrl}
+          onDownload={mockOnDownload}
+          onCopy={mockOnCopy}
+        />,
+      );
+      const img = screen.getByAltText('QR Code');
+      expect(img).toBeInTheDocument();
+      expect(img).toHaveAttribute('src', testDataUrl);
+    });
+
+    it('当 qrCodeDataUrl 有值时应显示下载按钮', () => {
+      render(
+        <QrCodePreview
+          qrCodeDataUrl="data:image/png;base64,test"
+          onDownload={mockOnDownload}
+          onCopy={mockOnCopy}
+        />,
+      );
+      expect(screen.getByText('qrCode:downloadButton')).toBeInTheDocument();
+    });
+
+    it('当 qrCodeDataUrl 有值时应显示复制按钮', () => {
+      render(
+        <QrCodePreview
+          qrCodeDataUrl="data:image/png;base64,test"
+          onDownload={mockOnDownload}
+          onCopy={mockOnCopy}
+        />,
+      );
+      expect(screen.getByText('qrCode:copyQrButton')).toBeInTheDocument();
+    });
+
+    it('当 qrCodeDataUrl 为空时不应显示操作按钮', () => {
+      render(<QrCodePreview qrCodeDataUrl="" onDownload={mockOnDownload} onCopy={mockOnCopy} />);
+      expect(screen.queryByText('qrCode:downloadButton')).not.toBeInTheDocument();
+      expect(screen.queryByText('qrCode:copyQrButton')).not.toBeInTheDocument();
+    });
+  });
+
+  describe('交互测试', () => {
+    it('点击下载按钮时应调用 onDownload 回调', () => {
+      render(
+        <QrCodePreview
+          qrCodeDataUrl="data:image/png;base64,test"
+          onDownload={mockOnDownload}
+          onCopy={mockOnCopy}
+        />,
+      );
+      fireEvent.click(screen.getByText('qrCode:downloadButton'));
+      expect(mockOnDownload).toHaveBeenCalledTimes(1);
+    });
+
+    it('点击复制按钮时应调用 onCopy 回调', () => {
+      render(
+        <QrCodePreview
+          qrCodeDataUrl="data:image/png;base64,test"
+          onDownload={mockOnDownload}
+          onCopy={mockOnCopy}
+        />,
+      );
+      fireEvent.click(screen.getByText('qrCode:copyQrButton'));
+      expect(mockOnCopy).toHaveBeenCalledTimes(1);
+    });
+  });
+});