first commit

tests/Luopan.test.ts

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+/**
+ * Luopan 组件单元测试
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { mount } from '@vue/test-utils';
+import Luopan from '../src/Luopan.vue';
+import { EXAMPLES } from '../src/constants';
+
+describe('Luopan 组件', () => {
+  describe('基本渲染', () => {
+    it('应该成功渲染', () => {
+      const wrapper = mount(Luopan);
+      expect(wrapper.exists()).toBe(true);
+    });
+
+    it('应该渲染工具栏', () => {
+      const wrapper = mount(Luopan);
+      const toolbar = wrapper.find('.toolbar');
+      expect(toolbar.exists()).toBe(true);
+    });
+
+    it('应该渲染 SVG 容器', () => {
+      const wrapper = mount(Luopan);
+      const svg = wrapper.find('svg');
+      expect(svg.exists()).toBe(true);
+    });
+
+    it('应该使用默认尺寸', () => {
+      const wrapper = mount(Luopan);
+      const svg = wrapper.find('svg');
+      expect(svg.attributes('width')).toBeTruthy();
+      expect(svg.attributes('height')).toBeTruthy();
+    });
+
+    it('应该使用传入的 size prop', () => {
+      const customSize = 600;
+      const wrapper = mount(Luopan, {
+        props: { size: customSize },
+      });
+      const svg = wrapper.find('svg');
+      expect(svg.attributes('width')).toBe(String(customSize));
+      expect(svg.attributes('height')).toBe(String(customSize));
+    });
+
+    it('应该设置正确的 viewBox', () => {
+      const size = 520;
+      const wrapper = mount(Luopan, {
+        props: { size },
+      });
+      const svg = wrapper.find('svg');
+      const viewBox = svg.attributes('viewBox');
+      expect(viewBox).toBe(`${-size / 2} ${-size / 2} ${size} ${size}`);
+    });
+  });
+
+  describe('示例切换', () => {
+    it('应该渲染示例切换按钮', () => {
+      const wrapper = mount(Luopan);
+      const buttons = wrapper.findAll('.toolbar button:not(.zoom-controls button)');
+      expect(buttons.length).toBeGreaterThanOrEqual(EXAMPLES.length);
+    });
+
+    it('第一个示例按钮应该默认激活', () => {
+      const wrapper = mount(Luopan);
+      const firstButton = wrapper.findAll('.toolbar button')[0];
+      expect(firstButton.classes()).toContain('active');
+    });
+
+    it('点击示例按钮应该切换示例', async () => {
+      const wrapper = mount(Luopan);
+      const buttons = wrapper.findAll('.toolbar button');
+      
+      // 假设至少有2个示例
+      if (buttons.length >= 2) {
+        const secondButton = buttons[1];
+        await secondButton.trigger('click');
+        
+        expect(secondButton.classes()).toContain('active');
+        expect(buttons[0].classes()).not.toContain('active');
+      }
+    });
+  });
+
+  describe('辅助线显示', () => {
+    it('应该有辅助线切换开关', () => {
+      const wrapper = mount(Luopan);
+      const checkbox = wrapper.find('input[type="checkbox"]');
+      expect(checkbox.exists()).toBe(true);
+    });
+
+    it('辅助线应该默认显示', () => {
+      const wrapper = mount(Luopan);
+      const checkbox = wrapper.find('input[type="checkbox"]');
+      expect((checkbox.element as HTMLInputElement).checked).toBe(true);
+    });
+
+    it('切换辅助线开关应该显示/隐藏辅助线', async () => {
+      const wrapper = mount(Luopan);
+      const checkbox = wrapper.find('input[type="checkbox"]');
+      
+      // 默认显示辅助线
+      let guidesGroup = wrapper.findAll('g').find(g => g.attributes('stroke') === '#111827');
+      expect(guidesGroup).toBeDefined();
+      
+      // 取消勾选
+      await checkbox.setValue(false);
+      guidesGroup = wrapper.findAll('g').find(g => g.attributes('stroke') === '#111827');
+      // 辅助线可能被隐藏或不渲染
+    });
+  });
+
+  describe('文字位置模式', () => {
+    it('应该有文字位置选择器', () => {
+      const wrapper = mount(Luopan);
+      const select = wrapper.find('select');
+      expect(select.exists()).toBe(true);
+    });
+
+    it('选择器应该有两个选项', () => {
+      const wrapper = mount(Luopan);
+      const options = wrapper.findAll('option');
+      expect(options.length).toBe(2);
+    });
+
+    it('应该能切换文字位置模式', async () => {
+      const wrapper = mount(Luopan);
+      const select = wrapper.find('select');
+      
+      // 切换到形心模式
+      await select.setValue('centroid');
+      expect((select.element as HTMLSelectElement).value).toBe('centroid');
+      
+      // 切换回中点模式
+      await select.setValue('middle');
+      expect((select.element as HTMLSelectElement).value).toBe('middle');
+    });
+  });
+
+  describe('缩放功能', () => {
+    it('应该渲染缩放控件', () => {
+      const wrapper = mount(Luopan);
+      const zoomControls = wrapper.find('.zoom-controls');
+      expect(zoomControls.exists()).toBe(true);
+    });
+
+    it('应该有放大、缩小和重置按钮', () => {
+      const wrapper = mount(Luopan);
+      const buttons = wrapper.findAll('.zoom-controls button');
+      expect(buttons.length).toBe(3);
+    });
+
+    it('应该显示当前缩放级别', () => {
+      const wrapper = mount(Luopan);
+      const zoomLevel = wrapper.find('.zoom-level');
+      expect(zoomLevel.exists()).toBe(true);
+      expect(zoomLevel.text()).toContain('%');
+    });
+
+    it('点击放大按钮应该增加缩放', async () => {
+      const wrapper = mount(Luopan);
+      const zoomInButton = wrapper.findAll('.zoom-controls button')[1];
+      const svg = wrapper.find('svg');
+      
+      const initialTransform = svg.attributes('style');
+      
+      await zoomInButton.trigger('click');
+      
+      const newTransform = svg.attributes('style');
+      expect(newTransform).not.toBe(initialTransform);
+    });
+
+    it('点击缩小按钮应该减少缩放', async () => {
+      const wrapper = mount(Luopan);
+      const zoomOutButton = wrapper.findAll('.zoom-controls button')[0];
+      const svg = wrapper.find('svg');
+      
+      const initialTransform = svg.attributes('style');
+      
+      await zoomOutButton.trigger('click');
+      
+      const newTransform = svg.attributes('style');
+      expect(newTransform).not.toBe(initialTransform);
+    });
+
+    it('点击重置按钮应该重置缩放和平移', async () => {
+      const wrapper = mount(Luopan);
+      const buttons = wrapper.findAll('.zoom-controls button');
+      const zoomInButton = buttons[1];
+      const resetButton = buttons[2];
+      const svg = wrapper.find('svg');
+      
+      // 先放大
+      await zoomInButton.trigger('click');
+      
+      // 然后重置
+      await resetButton.trigger('click');
+      
+      const transform = svg.attributes('style');
+      expect(transform).toContain('scale(1)');
+    });
+
+    it('缩放到达上限时应该禁用放大按钮', async () => {
+      const wrapper = mount(Luopan);
+      const zoomInButton = wrapper.findAll('.zoom-controls button')[1];
+      
+      // 多次点击放大直到达到上限
+      for (let i = 0; i < 30; i++) {
+        await zoomInButton.trigger('click');
+      }
+      
+      expect(zoomInButton.attributes('disabled')).toBeDefined();
+    });
+
+    it('缩放到达下限时应该禁用缩小按钮', async () => {
+      const wrapper = mount(Luopan);
+      const zoomOutButton = wrapper.findAll('.zoom-controls button')[0];
+      
+      // 多次点击缩小直到达到下限
+      for (let i = 0; i < 10; i++) {
+        await zoomOutButton.trigger('click');
+      }
+      
+      expect(zoomOutButton.attributes('disabled')).toBeDefined();
+    });
+  });
+
+  describe('鼠标滚轮缩放', () => {
+    it('应该监听滚轮事件', () => {
+      const wrapper = mount(Luopan);
+      const container = wrapper.find('.svg-container');
+      expect(container.exists()).toBe(true);
+    });
+
+    it('向下滚动应该缩小', async () => {
+      const wrapper = mount(Luopan);
+      const container = wrapper.find('.svg-container');
+      const svg = wrapper.find('svg');
+      
+      await container.trigger('wheel', { deltaY: 100 });
+      
+      // 验证缩放变化
+      const transform = svg.attributes('style');
+      expect(transform).toBeTruthy();
+    });
+
+    it('向上滚动应该放大', async () => {
+      const wrapper = mount(Luopan);
+      const container = wrapper.find('.svg-container');
+      const svg = wrapper.find('svg');
+      
+      await container.trigger('wheel', { deltaY: -100 });
+      
+      // 验证缩放变化
+      const transform = svg.attributes('style');
+      expect(transform).toBeTruthy();
+    });
+  });
+
+  describe('鼠标拖拽平移', () => {
+    it('鼠标按下时光标应该变为抓取状态', async () => {
+      const wrapper = mount(Luopan);
+      const container = wrapper.find('.svg-container');
+      const svg = wrapper.find('svg');
+      
+      // 初始状态
+      expect(svg.attributes('style')).toContain('cursor: grab');
+      
+      // 鼠标按下
+      await container.trigger('mousedown', { clientX: 100, clientY: 100 });
+      
+      // 应该变为抓取中状态
+      expect(svg.attributes('style')).toContain('cursor: grabbing');
+    });
+
+    it('鼠标释放时光标应该恢复', async () => {
+      const wrapper = mount(Luopan);
+      const container = wrapper.find('.svg-container');
+      const svg = wrapper.find('svg');
+      
+      await container.trigger('mousedown', { clientX: 100, clientY: 100 });
+      await container.trigger('mouseup');
+      
+      expect(svg.attributes('style')).toContain('cursor: grab');
+    });
+
+    it('拖拽应该改变平移位置', async () => {
+      const wrapper = mount(Luopan);
+      const container = wrapper.find('.svg-container');
+      const svg = wrapper.find('svg');
+      
+      const initialTransform = svg.attributes('style');
+      
+      // 模拟拖拽
+      await container.trigger('mousedown', { clientX: 100, clientY: 100 });
+      await container.trigger('mousemove', { clientX: 150, clientY: 150 });
+      await container.trigger('mouseup');
+      
+      const newTransform = svg.attributes('style');
+      expect(newTransform).not.toBe(initialTransform);
+    });
+
+    it('鼠标离开时应该停止拖拽', async () => {
+      const wrapper = mount(Luopan);
+      const container = wrapper.find('.svg-container');
+      const svg = wrapper.find('svg');
+      
+      await container.trigger('mousedown', { clientX: 100, clientY: 100 });
+      await container.trigger('mouseleave');
+      
+      expect(svg.attributes('style')).toContain('cursor: grab');
+    });
+  });
+
+  describe('扇区渲染', () => {
+    it('应该渲染多个扇区路径', () => {
+      const wrapper = mount(Luopan);
+      const sectorPaths = wrapper.findAll('path[fill]').filter(path => 
+        !path.attributes('d')?.includes('none')
+      );
+      expect(sectorPaths.length).toBeGreaterThan(0);
+    });
+
+    it('扇区应该有填充颜色', () => {
+      const wrapper = mount(Luopan);
+      const sectorPaths = wrapper.findAll('path[fill]');
+      sectorPaths.forEach((path) => {
+        const fill = path.attributes('fill');
+        expect(fill).toBeTruthy();
+      });
+    });
+
+    it('扇区应该有边框', () => {
+      const wrapper = mount(Luopan);
+      const sectorPaths = wrapper.findAll('path[stroke]');
+      expect(sectorPaths.length).toBeGreaterThan(0);
+    });
+
+    it('某些扇区应该有内部填色', () => {
+      const wrapper = mount(Luopan);
+      // 查找内部填色路径（fill-opacity="0.6"）
+      const innerFillPaths = wrapper.findAll('path[fill-opacity]');
+      expect(innerFillPaths.length).toBeGreaterThanOrEqual(0);
+    });
+  });
+
+  describe('文字渲染', () => {
+    it('应该渲染文字标签', () => {
+      const wrapper = mount(Luopan);
+      const textElements = wrapper.findAll('text');
+      expect(textElements.length).toBeGreaterThan(0);
+    });
+
+    it('文字应该使用 textPath', () => {
+      const wrapper = mount(Luopan);
+      const textPaths = wrapper.findAll('textPath');
+      expect(textPaths.length).toBeGreaterThan(0);
+    });
+
+    it('应该在 defs 中定义文字路径', () => {
+      const wrapper = mount(Luopan);
+      const defs = wrapper.find('defs');
+      expect(defs.exists()).toBe(true);
+      
+      const pathsInDefs = defs.findAll('path');
+      expect(pathsInDefs.length).toBeGreaterThan(0);
+    });
+
+    it('每个 textPath 应该引用对应的路径 id', () => {
+      const wrapper = mount(Luopan);
+      const textPaths = wrapper.findAll('textPath');
+      
+      textPaths.forEach((textPath) => {
+        const href = textPath.attributes('href');
+        expect(href).toBeTruthy();
+        expect(href?.startsWith('#')).toBe(true);
+      });
+    });
+
+    it('文字应该有字体大小', () => {
+      const wrapper = mount(Luopan);
+      const textElements = wrapper.findAll('text');
+      
+      textElements.forEach((text) => {
+        const fontSize = text.attributes('font-size');
+        expect(fontSize).toBeTruthy();
+        expect(parseFloat(fontSize!)).toBeGreaterThan(0);
+      });
+    });
+
+    it('文字应该有填充颜色', () => {
+      const wrapper = mount(Luopan);
+      const textElements = wrapper.findAll('text');
+      
+      textElements.forEach((text) => {
+        const fill = text.attributes('fill');
+        expect(fill).toBeTruthy();
+      });
+    });
+
+    it('文字内容应该非空', () => {
+      const wrapper = mount(Luopan);
+      const textPaths = wrapper.findAll('textPath');
+      
+      textPaths.forEach((textPath) => {
+        expect(textPath.text().length).toBeGreaterThan(0);
+      });
+    });
+  });
+
+  describe('辅助线渲染', () => {
+    it('显示辅助线时应该渲染圆环', async () => {
+      const wrapper = mount(Luopan);
+      const checkbox = wrapper.find('input[type="checkbox"]');
+      await checkbox.setValue(true);
+      
+      const circles = wrapper.findAll('circle[fill="none"]');
+      expect(circles.length).toBeGreaterThan(0);
+    });
+
+    it('显示辅助线时应该渲染径向线', async () => {
+      const wrapper = mount(Luopan);
+      const checkbox = wrapper.find('input[type="checkbox"]');
+      await checkbox.setValue(true);
+      
+      const lines = wrapper.findAll('line');
+      // 应该有一些径向线
+      expect(lines.length).toBeGreaterThan(0);
+    });
+
+    it('显示辅助线时应该渲染形心点', async () => {
+      const wrapper = mount(Luopan);
+      const checkbox = wrapper.find('input[type="checkbox"]');
+      await checkbox.setValue(true);
+      
+      const centroidCircles = wrapper.findAll('circle[fill="#ef4444"]');
+      expect(centroidCircles.length).toBeGreaterThan(0);
+    });
+  });
+
+  describe('说明文本', () => {
+    it('应该显示说明区域', () => {
+      const wrapper = mount(Luopan);
+      const note = wrapper.find('.note');
+      expect(note.exists()).toBe(true);
+    });
+
+    it('说明应该包含角度约定', () => {
+      const wrapper = mount(Luopan);
+      const note = wrapper.find('.note');
+      expect(note.text()).toContain('角度');
+    });
+
+    it('说明应该包含文字方向', () => {
+      const wrapper = mount(Luopan);
+      const note = wrapper.find('.note');
+      expect(note.text()).toContain('文字');
+    });
+  });
+
+  describe('背景渲染', () => {
+    it('应该渲染白色背景矩形', () => {
+      const wrapper = mount(Luopan);
+      const bgRect = wrapper.find('rect[fill="white"]');
+      expect(bgRect.exists()).toBe(true);
+    });
+
+    it('背景应该覆盖整个 SVG 区域', () => {
+      const size = 520;
+      const wrapper = mount(Luopan, {
+        props: { size },
+      });
+      const bgRect = wrapper.find('rect[fill="white"]');
+      
+      expect(bgRect.attributes('width')).toBe(String(size));
+      expect(bgRect.attributes('height')).toBe(String(size));
+    });
+  });
+
+  describe('组件样式', () => {
+    it('主容器应该使用 grid 布局', () => {
+      const wrapper = mount(Luopan);
+      const wrap = wrapper.find('.luopan-wrap');
+      expect(wrap.exists()).toBe(true);
+    });
+
+    it('工具栏按钮应该有样式', () => {
+      const wrapper = mount(Luopan);
+      const buttons = wrapper.findAll('button');
+      expect(buttons.length).toBeGreaterThan(0);
+    });
+
+    it('SVG 容器应该存在', () => {
+      const wrapper = mount(Luopan);
+      const container = wrapper.find('.svg-container');
+      expect(container.exists()).toBe(true);
+    });
+  });
+
+  describe('边界情况', () => {
+    it('应该处理极小的尺寸', () => {
+      const wrapper = mount(Luopan, {
+        props: { size: 100 },
+      });
+      expect(wrapper.exists()).toBe(true);
+    });
+
+    it('应该处理极大的尺寸', () => {
+      const wrapper = mount(Luopan, {
+        props: { size: 2000 },
+      });
+      expect(wrapper.exists()).toBe(true);
+    });
+
+    it('应该在没有示例时不崩溃', () => {
+      // 这个测试需要 mock EXAMPLES
+      const wrapper = mount(Luopan);
+      expect(wrapper.exists()).toBe(true);
+    });
+  });
+
+  describe('性能', () => {
+    it('应该在合理时间内渲染', () => {
+      const startTime = performance.now();
+      const wrapper = mount(Luopan);
+      const endTime = performance.now();
+      
+      expect(endTime - startTime).toBeLessThan(1000); // 应在1秒内完成
+    });
+
+    it('切换示例应该不会造成内存泄漏', async () => {
+      const wrapper = mount(Luopan);
+      const buttons = wrapper.findAll('.toolbar button');
+      
+      if (buttons.length >= 2) {
+        // 多次切换示例
+        for (let i = 0; i < 5; i++) {
+          await buttons[i % buttons.length].trigger('click');
+        }
+      }
+      
+      expect(wrapper.exists()).toBe(true);
+    });
+  });
+});

tests/README.md

@@ -0,0 +1,117 @@
+# 测试文档
+
+本目录包含罗盘项目的所有测试用例。
+
+## 测试文件结构
+
+```
+tests/
+├── README.md                 # 本文档
+├── constants.test.ts        # 常量和配置测试
+├── utils.test.ts            # 工具函数单元测试
+├── useLuopan.test.ts        # 组合函数业务逻辑测试
+└── Luopan.test.ts           # Vue 组件测试
+```
+
+## 测试覆盖范围
+
+### 1. constants.test.ts (22 个测试)
+测试项目的常量配置和示例数据：
+- 默认尺寸、文字位置等配置项的有效性
+- 示例数据的完整性和正确性
+- 角度数组和半径数组的有效性验证
+- 不同类型示例的存在性检查
+
+### 2. utils.test.ts (48 个测试)
+测试所有工具函数的核心逻辑：
+- **polarToXY**: 极坐标转换
+- **normalizeDeg**: 角度归一化
+- **annularSectorCentroid**: 扇形形心计算
+- **annularSectorPath**: SVG 路径生成
+- **annularSectorInsetPath**: 内缩路径生成
+- **calculateLabelRotation**: 文字旋转角度
+- **generateSectorColor**: 扇区颜色生成
+- **generateTextPath**: 文字路径生成
+- **generateVerticalTextPath**: 竖排文字路径
+- **getTextColorForBackground**: 文字颜色适配
+- **calculateSectorFontSize**: 字体大小计算
+
+### 3. useLuopan.test.ts (32 个测试)
+测试罗盘业务逻辑组合函数：
+- 基本功能和返回值验证
+- 扇区生成逻辑
+- 文字位置模式（middle/centroid）
+- 文字方向判断
+- 竖排文字判断
+- 内部填色逻辑
+- 响应式更新
+- 边界情况处理
+
+### 4. Luopan.test.ts (57 个测试)
+测试 Vue 组件的完整功能：
+- 组件基本渲染
+- 示例切换功能
+- 辅助线显示/隐藏
+- 文字位置模式选择
+- 缩放功能（放大、缩小、重置）
+- 鼠标滚轮缩放
+- 鼠标拖拽平移
+- 扇区渲染
+- 文字渲染
+- 辅助线渲染
+- 说明文本
+- 背景渲染
+- 样式验证
+- 边界情况
+- 性能测试
+
+## 运行测试
+
+### 运行所有测试
+```bash
+npm test
+```
+
+### 运行单个测试文件
+```bash
+npm test tests/utils.test.ts
+```
+
+### 运行测试并监视文件变化
+```bash
+npm test -- --watch
+```
+
+### 生成测试覆盖率报告
+```bash
+npm test -- --coverage
+```
+
+## 测试统计
+
+- **总测试文件**: 4 个
+- **总测试用例**: 159 个
+- **测试通过率**: 100%
+- **测试运行时间**: ~1.8 秒
+
+## 测试编写规范
+
+1. **描述清晰**: 每个测试用例的描述应该清楚说明测试的内容
+2. **独立性**: 测试用例之间应该相互独立，不依赖执行顺序
+3. **覆盖全面**: 包括正常情况、边界情况和异常情况
+4. **断言准确**: 使用合适的断言方法，确保测试的准确性
+5. **可维护性**: 测试代码应该易于理解和维护
+
+## 技术栈
+
+- **测试框架**: Vitest
+- **Vue 测试工具**: @vue/test-utils
+- **测试环境**: happy-dom
+
+## 贡献指南
+
+添加新功能时，请确保：
+1. 为新功能编写对应的测试用例
+2. 确保所有现有测试通过
+3. 测试覆盖率不低于当前水平
+4. 测试用例描述清晰，易于理解

tests/constants.test.ts

@@ -0,0 +1,165 @@
+/**
+ * 常量和配置单元测试
+ */
+
+import { describe, it, expect } from 'vitest';
+import {
+  DEFAULT_SIZE,
+  DEFAULT_TEXT_RADIAL_POSITION,
+  SECTOR_INSET_DISTANCE,
+  SECTOR_STROKE_WIDTH,
+  EXAMPLES,
+} from '../src/constants';
+
+describe('DEFAULT_SIZE', () => {
+  it('应该是一个正数', () => {
+    expect(DEFAULT_SIZE).toBeGreaterThan(0);
+  });
+
+  it('应该是一个合理的画布尺寸', () => {
+    expect(DEFAULT_SIZE).toBeGreaterThanOrEqual(200);
+    expect(DEFAULT_SIZE).toBeLessThanOrEqual(2000);
+  });
+});
+
+describe('DEFAULT_TEXT_RADIAL_POSITION', () => {
+  it('应该是有效的文字位置值', () => {
+    expect(['middle', 'centroid']).toContain(DEFAULT_TEXT_RADIAL_POSITION);
+  });
+});
+
+describe('SECTOR_INSET_DISTANCE', () => {
+  it('应该是一个非负数', () => {
+    expect(SECTOR_INSET_DISTANCE).toBeGreaterThanOrEqual(0);
+  });
+
+  it('应该是一个合理的内缩距离', () => {
+    expect(SECTOR_INSET_DISTANCE).toBeLessThan(10);
+  });
+});
+
+describe('SECTOR_STROKE_WIDTH', () => {
+  it('应该是一个正数', () => {
+    expect(SECTOR_STROKE_WIDTH).toBeGreaterThan(0);
+  });
+
+  it('应该是一个合理的线宽', () => {
+    expect(SECTOR_STROKE_WIDTH).toBeLessThan(5);
+  });
+});
+
+describe('EXAMPLES', () => {
+  it('应该包含至少一个示例', () => {
+    expect(EXAMPLES.length).toBeGreaterThan(0);
+  });
+
+  it('每个示例应该有名称', () => {
+    EXAMPLES.forEach((example) => {
+      expect(example.name).toBeTruthy();
+      expect(typeof example.name).toBe('string');
+    });
+  });
+
+  it('每个示例应该有有效的角度数组', () => {
+    EXAMPLES.forEach((example) => {
+      expect(Array.isArray(example.angles)).toBe(true);
+      expect(example.angles.length).toBeGreaterThanOrEqual(2);
+    });
+  });
+
+  it('每个示例的角度应该从 0 开始', () => {
+    EXAMPLES.forEach((example) => {
+      expect(example.angles[0]).toBe(0);
+    });
+  });
+
+  it('每个示例的角度应该以 360 结束', () => {
+    EXAMPLES.forEach((example) => {
+      expect(example.angles[example.angles.length - 1]).toBe(360);
+    });
+  });
+
+  it('每个示例的角度应该是递增的', () => {
+    EXAMPLES.forEach((example) => {
+      for (let i = 1; i < example.angles.length; i++) {
+        expect(example.angles[i]).toBeGreaterThan(example.angles[i - 1]);
+      }
+    });
+  });
+
+  it('每个示例应该有有效的半径数组', () => {
+    EXAMPLES.forEach((example) => {
+      expect(Array.isArray(example.radii)).toBe(true);
+      expect(example.radii.length).toBeGreaterThanOrEqual(1);
+    });
+  });
+
+  it('每个示例的半径应该是正数', () => {
+    EXAMPLES.forEach((example) => {
+      example.radii.forEach((radius) => {
+        expect(radius).toBeGreaterThan(0);
+      });
+    });
+  });
+
+  it('每个示例的半径应该是递增的', () => {
+    EXAMPLES.forEach((example) => {
+      for (let i = 1; i < example.radii.length; i++) {
+        expect(example.radii[i]).toBeGreaterThan(example.radii[i - 1]);
+      }
+    });
+  });
+
+  it('应该包含不同类型的示例（等分和不等分）', () => {
+    const hasEqualDivision = EXAMPLES.some((example) => {
+      const angles = example.angles;
+      if (angles.length < 3) return false;
+      const step = angles[1] - angles[0];
+      return angles.every((angle, i) => i === 0 || Math.abs(angle - angles[i - 1] - step) < 0.01);
+    });
+
+    const hasUnequalDivision = EXAMPLES.some((example) => {
+      const angles = example.angles;
+      if (angles.length < 3) return false;
+      const firstStep = angles[1] - angles[0];
+      return angles.some((angle, i) => i > 1 && Math.abs(angle - angles[i - 1] - firstStep) > 0.01);
+    });
+
+    expect(hasEqualDivision).toBe(true);
+    expect(hasUnequalDivision).toBe(true);
+  });
+
+  it('应该包含不同层数的示例', () => {
+    const layerCounts = EXAMPLES.map((example) => example.radii.length);
+    const uniqueLayerCounts = new Set(layerCounts);
+    expect(uniqueLayerCounts.size).toBeGreaterThan(1);
+  });
+
+  it('应该包含密集和稀疏的扇区分割', () => {
+    const sectorCounts = EXAMPLES.map((example) => example.angles.length - 1);
+    const minSectors = Math.min(...sectorCounts);
+    const maxSectors = Math.max(...sectorCounts);
+    expect(maxSectors).toBeGreaterThan(minSectors * 2);
+  });
+
+  it('所有示例的半径都不应超过合理范围', () => {
+    EXAMPLES.forEach((example) => {
+      const maxRadius = Math.max(...example.radii);
+      expect(maxRadius).toBeLessThan(500); // 假设最大半径不超过500
+    });
+  });
+
+  it('应该有12等分3层的标准示例', () => {
+    const example = EXAMPLES.find((ex) => ex.name.includes('12') && ex.name.includes('3'));
+    expect(example).toBeDefined();
+    if (example) {
+      expect(example.angles.length).toBe(13); // 0 到 360，13个点
+      expect(example.radii.length).toBe(3);
+    }
+  });
+
+  it('应该有包含大量层数的示例', () => {
+    const maxLayers = Math.max(...EXAMPLES.map((ex) => ex.radii.length));
+    expect(maxLayers).toBeGreaterThanOrEqual(6);
+  });
+});

tests/useLuopan.test.ts

@@ -0,0 +1,475 @@
+/**
+ * useLuopan 组合函数单元测试
+ */
+
+import { describe, it, expect } from 'vitest';
+import { ref } from 'vue';
+import { useLuopan } from '../src/composables/useLuopan';
+import type { Example, TextRadialPosition } from '../src/types';
+
+describe('useLuopan', () => {
+  const createMockExample = (): Example => ({
+    name: '测试示例',
+    angles: [0, 90, 180, 270, 360],
+    radii: [50, 100, 150],
+  });
+
+  describe('基本功能', () => {
+    it('应该返回所有必需的属性和方法', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const result = useLuopan(example, textRadialPosition);
+
+      expect(result).toHaveProperty('anglesDeg');
+      expect(result).toHaveProperty('rings');
+      expect(result).toHaveProperty('outerMost');
+      expect(result).toHaveProperty('sectors');
+      expect(result).toHaveProperty('getLabelTransform');
+      expect(result).toHaveProperty('toXY');
+    });
+
+    it('anglesDeg 应该返回角度数组', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { anglesDeg } = useLuopan(example, textRadialPosition);
+
+      expect(anglesDeg.value).toEqual([0, 90, 180, 270, 360]);
+    });
+
+    it('rings 应该返回半径数组', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { rings } = useLuopan(example, textRadialPosition);
+
+      expect(rings.value).toEqual([50, 100, 150]);
+    });
+
+    it('outerMost 应该返回最外层半径', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { outerMost } = useLuopan(example, textRadialPosition);
+
+      expect(outerMost.value).toBe(150);
+    });
+  });
+
+  describe('扇区生成', () => {
+    it('应该生成正确数量的扇区', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      // 4个角度分割 × 3层 = 12个扇区
+      expect(sectors.value.length).toBe(12);
+    });
+
+    it('每个扇区应该有必需的属性', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      sectors.value.forEach((sector) => {
+        expect(sector).toHaveProperty('key');
+        expect(sector).toHaveProperty('layerIndex');
+        expect(sector).toHaveProperty('pieIndex');
+        expect(sector).toHaveProperty('rInner');
+        expect(sector).toHaveProperty('rOuter');
+        expect(sector).toHaveProperty('aStart');
+        expect(sector).toHaveProperty('aEnd');
+        expect(sector).toHaveProperty('aMidDeg');
+        expect(sector).toHaveProperty('aMidRad');
+        expect(sector).toHaveProperty('cx');
+        expect(sector).toHaveProperty('cy');
+        expect(sector).toHaveProperty('fill');
+        expect(sector).toHaveProperty('textColor');
+        expect(sector).toHaveProperty('label');
+        expect(sector).toHaveProperty('path');
+        expect(sector).toHaveProperty('textPath');
+        expect(sector).toHaveProperty('textPathId');
+        expect(sector).toHaveProperty('needReverse');
+        expect(sector).toHaveProperty('isVertical');
+        expect(sector).toHaveProperty('fontSize');
+      });
+    });
+
+    it('扇区的 key 应该是唯一的', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      const keys = sectors.value.map((s) => s.key);
+      const uniqueKeys = new Set(keys);
+      expect(uniqueKeys.size).toBe(keys.length);
+    });
+
+    it('扇区应该有正确的层索引和扇区索引', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      // 检查第一层的扇区
+      const layer0Sectors = sectors.value.filter((s) => s.layerIndex === 0);
+      expect(layer0Sectors.length).toBe(4);
+      expect(layer0Sectors.map((s) => s.pieIndex)).toEqual([0, 1, 2, 3]);
+
+      // 检查第二层的扇区
+      const layer1Sectors = sectors.value.filter((s) => s.layerIndex === 1);
+      expect(layer1Sectors.length).toBe(4);
+      expect(layer1Sectors.map((s) => s.pieIndex)).toEqual([0, 1, 2, 3]);
+    });
+
+    it('第一层扇区应该从圆心开始（rInner = 0）', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      const layer0Sectors = sectors.value.filter((s) => s.layerIndex === 0);
+      layer0Sectors.forEach((sector) => {
+        expect(sector.rInner).toBe(0);
+        expect(sector.rOuter).toBe(50);
+      });
+    });
+
+    it('扇区应该有正确的角度范围', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      const sector0 = sectors.value.find((s) => s.layerIndex === 0 && s.pieIndex === 0);
+      expect(sector0?.aStart).toBe(0);
+      expect(sector0?.aEnd).toBe(90);
+
+      const sector1 = sectors.value.find((s) => s.layerIndex === 0 && s.pieIndex === 1);
+      expect(sector1?.aStart).toBe(90);
+      expect(sector1?.aEnd).toBe(180);
+    });
+
+    it('扇区应该有有效的颜色', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      sectors.value.forEach((sector) => {
+        expect(sector.fill).toMatch(/^(hsl\(.*\)|#[0-9a-fA-F]{6}|#ffffff)$/);
+        expect(sector.textColor).toMatch(/^(#[0-9a-fA-F]{6}|#ffffff)$/);
+      });
+    });
+
+    it('扇区应该有有效的字体大小', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      sectors.value.forEach((sector) => {
+        expect(sector.fontSize).toBeGreaterThan(0);
+        expect(sector.fontSize).toBeLessThanOrEqual(30);
+      });
+    });
+
+    it('扇区应该有非空的标签', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      sectors.value.forEach((sector) => {
+        expect(sector.label).toBeTruthy();
+        expect(sector.label.length).toBeGreaterThan(0);
+      });
+    });
+
+    it('扇区应该有有效的 SVG 路径', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      sectors.value.forEach((sector) => {
+        expect(sector.path).toContain('M ');
+        expect(sector.path).toContain('Z');
+      });
+    });
+
+    it('扇区应该有有效的文字路径', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      sectors.value.forEach((sector) => {
+        expect(sector.textPath).toContain('M ');
+      });
+    });
+  });
+
+  describe('文字位置模式', () => {
+    it('应该在 middle 模式下使用中点位置', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      // 第二层的中点应该在 (50 + 100) / 2 = 75 附近
+      const layer1Sector = sectors.value.find((s) => s.layerIndex === 1);
+      expect(layer1Sector).toBeDefined();
+    });
+
+    it('应该在 centroid 模式下使用形心位置', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('centroid');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      // 形心位置应该与中点位置不同
+      expect(sectors.value.length).toBeGreaterThan(0);
+    });
+
+    it('最内层应该始终使用形心位置', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      const innermostSectors = sectors.value.filter((s) => s.layerIndex === 0);
+      expect(innermostSectors.length).toBeGreaterThan(0);
+      // 最内层应该使用形心位置，即使设置为 middle
+    });
+  });
+
+  describe('文字方向', () => {
+    it('应该为左半圆的扇区设置 needReverse', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      // 中间角度在 (90, 270) 范围内的扇区应该需要反向
+      const leftSectors = sectors.value.filter(
+        (s) => s.aMidDeg > 90 && s.aMidDeg < 270
+      );
+      leftSectors.forEach((sector) => {
+        expect(sector.needReverse).toBe(true);
+      });
+    });
+
+    it('应该为右半圆的扇区不设置 needReverse', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      // 中间角度在 [0, 90] 或 [270, 360] 范围内的扇区不需要反向
+      const rightSectors = sectors.value.filter(
+        (s) => s.aMidDeg <= 90 || s.aMidDeg >= 270
+      );
+      rightSectors.forEach((sector) => {
+        expect(sector.needReverse).toBe(false);
+      });
+    });
+  });
+
+  describe('竖排文字判断', () => {
+    it('应该为窄扇区设置 isVertical', () => {
+      const example = ref({
+        name: '窄扇区示例',
+        angles: [0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360],
+        radii: [50, 100, 150],
+      });
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      // 某些窄扇区应该被设置为竖排
+      const verticalSectors = sectors.value.filter((s) => s.isVertical);
+      expect(verticalSectors.length).toBeGreaterThan(0);
+    });
+
+    it('应该为宽扇区不设置 isVertical', () => {
+      const example = ref({
+        name: '宽扇区示例',
+        angles: [0, 180, 360],
+        radii: [50, 60],
+      });
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      // 宽扇区应该都不是竖排
+      sectors.value.forEach((sector) => {
+        expect(sector.isVertical).toBe(false);
+      });
+    });
+  });
+
+  describe('内部填色', () => {
+    it('某些扇区应该有内部填色', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      const filledSectors = sectors.value.filter(
+        (s) => s.innerFillPath && s.innerFillColor
+      );
+      expect(filledSectors.length).toBeGreaterThan(0);
+    });
+
+    it('有内部填色的扇区应该使用白色底色和黑色文字', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      const filledSectors = sectors.value.filter(
+        (s) => s.innerFillPath && s.innerFillColor
+      );
+      filledSectors.forEach((sector) => {
+        expect(sector.fill).toBe('#ffffff');
+        expect(sector.textColor).toBe('#111827');
+      });
+    });
+  });
+
+  describe('响应式更新', () => {
+    it('应该响应示例变化', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      const initialCount = sectors.value.length;
+
+      // 更改示例
+      example.value = {
+        name: '新示例',
+        angles: [0, 120, 240, 360],
+        radii: [100, 200],
+      };
+
+      // 扇区数量应该变化
+      expect(sectors.value.length).not.toBe(initialCount);
+      expect(sectors.value.length).toBe(6); // 3个角度分割 × 2层
+    });
+
+    it('应该响应文字位置模式变化', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      const middlePaths = sectors.value.map((s) => s.textPath);
+
+      // 更改文字位置模式
+      textRadialPosition.value = 'centroid';
+
+      const centroidPaths = sectors.value.map((s) => s.textPath);
+
+      // 非最内层的文字路径应该有所不同
+      const differentPaths = middlePaths.filter(
+        (path, index) => path !== centroidPaths[index]
+      );
+      expect(differentPaths.length).toBeGreaterThan(0);
+    });
+  });
+
+  describe('getLabelTransform', () => {
+    it('应该返回有效的 SVG transform 字符串', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors, getLabelTransform } = useLuopan(example, textRadialPosition);
+
+      const sector = sectors.value[0];
+      const transform = getLabelTransform(sector);
+
+      expect(transform).toContain('translate');
+      expect(transform).toContain('rotate');
+    });
+  });
+
+  describe('toXY', () => {
+    it('应该正确转换极坐标', () => {
+      const example = ref(createMockExample());
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { toXY } = useLuopan(example, textRadialPosition);
+
+      const point = toXY(0, 100);
+      expect(point.x).toBeCloseTo(0);
+      expect(point.y).toBeCloseTo(-100);
+    });
+  });
+
+  describe('边界情况', () => {
+    it('应该处理单层罗盘', () => {
+      const example = ref({
+        name: '单层',
+        angles: [0, 90, 180, 270, 360],
+        radii: [100],
+      });
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      expect(sectors.value.length).toBe(4);
+      sectors.value.forEach((sector) => {
+        expect(sector.layerIndex).toBe(0);
+        expect(sector.rInner).toBe(0);
+        expect(sector.rOuter).toBe(100);
+      });
+    });
+
+    it('应该处理两个扇区的罗盘', () => {
+      const example = ref({
+        name: '两扇区',
+        angles: [0, 180, 360],
+        radii: [100],
+      });
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      expect(sectors.value.length).toBe(2);
+    });
+
+    it('应该处理大量层数的罗盘', () => {
+      const example = ref({
+        name: '多层',
+        angles: [0, 90, 180, 270, 360],
+        radii: [20, 40, 60, 80, 100, 120, 140, 160, 180, 200],
+      });
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      expect(sectors.value.length).toBe(40); // 4个扇区 × 10层
+      const layerIndices = new Set(sectors.value.map((s) => s.layerIndex));
+      expect(layerIndices.size).toBe(10);
+    });
+
+    it('应该处理大量扇区的罗盘', () => {
+      const example = ref({
+        name: '多扇区',
+        angles: Array.from({ length: 37 }, (_, i) => i * 10), // 36个扇区
+        radii: [100, 200],
+      });
+      const textRadialPosition = ref<TextRadialPosition>('middle');
+      
+      const { sectors } = useLuopan(example, textRadialPosition);
+
+      expect(sectors.value.length).toBe(72); // 36个扇区 × 2层
+    });
+  });
+});

tests/utils.test.ts

@@ -0,0 +1,369 @@
+/**
+ * 工具函数单元测试
+ * 使用 Vitest 进行测试
+ */
+
+import { describe, it, expect } from 'vitest';
+import {
+  polarToXY,
+  normalizeDeg,
+  annularSectorCentroid,
+  annularSectorPath,
+  annularSectorInsetPath,
+  calculateLabelRotation,
+  generateSectorColor,
+  generateTextPath,
+  generateVerticalTextPath,
+  getTextColorForBackground,
+  calculateSectorFontSize,
+} from '../src/utils';
+
+describe('polarToXY', () => {
+  it('应该正确转换 0° 角度（北方）', () => {
+    const result = polarToXY(0, 100);
+    expect(result.x).toBeCloseTo(0);
+    expect(result.y).toBeCloseTo(-100);
+  });
+
+  it('应该正确转换 90° 角度（东方）', () => {
+    const result = polarToXY(90, 100);
+    expect(result.x).toBeCloseTo(100);
+    expect(result.y).toBeCloseTo(0);
+  });
+
+  it('应该正确转换 180° 角度（南方）', () => {
+    const result = polarToXY(180, 100);
+    expect(result.x).toBeCloseTo(0);
+    expect(result.y).toBeCloseTo(100);
+  });
+
+  it('应该正确转换 270° 角度（西方）', () => {
+    const result = polarToXY(270, 100);
+    expect(result.x).toBeCloseTo(-100);
+    expect(result.y).toBeCloseTo(0);
+  });
+});
+
+describe('normalizeDeg', () => {
+  it('应该保持 0-360 范围内的角度不变', () => {
+    expect(normalizeDeg(45)).toBe(45);
+    expect(normalizeDeg(180)).toBe(180);
+    expect(normalizeDeg(359)).toBe(359);
+  });
+
+  it('应该将负角度转换为正角度', () => {
+    expect(normalizeDeg(-45)).toBe(315);
+    expect(normalizeDeg(-180)).toBe(180);
+    expect(normalizeDeg(-90)).toBe(270);
+  });
+
+  it('应该将大于 360 的角度归一化', () => {
+    expect(normalizeDeg(405)).toBe(45);
+    expect(normalizeDeg(720)).toBe(0);
+    expect(normalizeDeg(370)).toBe(10);
+  });
+});
+
+describe('annularSectorCentroid', () => {
+  it('应该为简单扇形计算正确的形心', () => {
+    const result = annularSectorCentroid({
+      rInner: 0,
+      rOuter: 100,
+      aStartDeg: 0,
+      aEndDeg: 90,
+    });
+
+    expect(result.aMidDeg).toBe(45);
+    expect(result.deltaDeg).toBe(90);
+    expect(result.rho).toBeGreaterThan(0);
+  });
+
+  it('应该为圆环扇形计算正确的形心', () => {
+    const result = annularSectorCentroid({
+      rInner: 50,
+      rOuter: 100,
+      aStartDeg: 0,
+      aEndDeg: 90,
+    });
+
+    expect(result.aMidDeg).toBe(45);
+    expect(result.deltaDeg).toBe(90);
+    expect(result.rho).toBeGreaterThan(50);
+    expect(result.rho).toBeLessThan(100);
+  });
+
+  it('应该处理跨越 0° 的扇形', () => {
+    const result = annularSectorCentroid({
+      rInner: 0,
+      rOuter: 100,
+      aStartDeg: 315,
+      aEndDeg: 45,
+    });
+
+    expect(result.aMidDeg).toBe(0);
+    expect(result.deltaDeg).toBe(90);
+  });
+
+  it('应该返回零形心当内外半径相等时', () => {
+    const result = annularSectorCentroid({
+      rInner: 100,
+      rOuter: 100,
+      aStartDeg: 0,
+      aEndDeg: 90,
+    });
+
+    expect(result.cx).toBe(0);
+    expect(result.cy).toBe(0);
+    expect(result.rho).toBe(0);
+  });
+});
+
+describe('annularSectorPath', () => {
+  it('应该生成有效的 SVG 路径', () => {
+    const path = annularSectorPath(50, 100, 0, 90);
+    expect(path).toContain('M ');
+    expect(path).toContain('A ');
+    expect(path).toContain('L ');
+    expect(path).toContain('Z');
+  });
+
+  it('应该为纯扇形（内半径为 0）生成简化路径', () => {
+    const path = annularSectorPath(0, 100, 0, 90);
+    expect(path).toContain('M ');
+    expect(path).toContain('A ');
+    expect(path).toContain('L 0 0');
+    expect(path).toContain('Z');
+  });
+
+  it('应该在大角度时设置 large-arc-flag', () => {
+    const path = annularSectorPath(50, 100, 0, 270);
+    // 大角度应包含 large-arc-flag = 1
+    expect(path).toBeTruthy();
+  });
+});
+
+describe('calculateLabelRotation', () => {
+  it('应该在上半圆不进行翻转', () => {
+    expect(calculateLabelRotation(0)).toBe(0);
+    expect(calculateLabelRotation(45)).toBe(45);
+    expect(calculateLabelRotation(90)).toBe(90);
+    expect(calculateLabelRotation(180)).toBe(180);
+  });
+
+  it('应该在下半圆翻转180°避免倒字', () => {
+    expect(calculateLabelRotation(181)).toBe(361); // 181 + 180
+    expect(calculateLabelRotation(270)).toBe(450); // 270 + 180
+    expect(calculateLabelRotation(359)).toBe(539); // 359 + 180
+  });
+
+  it('应该在边界值正确处理', () => {
+    expect(calculateLabelRotation(180)).toBe(180); // 等于180不翻转
+    expect(calculateLabelRotation(360)).toBe(360); // 等于360不翻转
+  });
+});
+
+describe('generateSectorColor', () => {
+  it('应该生成有效的 HSL 颜色', () => {
+    const color = generateSectorColor(0, 0);
+    expect(color).toMatch(/^hsl\(\d+(\.\d+)? \d+% \d+%\)$/);
+  });
+
+  it('应该根据层索引改变亮度', () => {
+    const color1 = generateSectorColor(0, 0);
+    const color2 = generateSectorColor(1, 0);
+    const color3 = generateSectorColor(2, 0);
+
+    // 提取亮度值
+    const light1 = parseInt(color1.match(/(\d+)%\)$/)?.[1] || '0');
+    const light2 = parseInt(color2.match(/(\d+)%\)$/)?.[1] || '0');
+    const light3 = parseInt(color3.match(/(\d+)%\)$/)?.[1] || '0');
+
+    expect(light1).toBeGreaterThan(light2);
+    expect(light2).toBeGreaterThan(light3);
+  });
+
+  it('应该根据扇区索引改变色相', () => {
+    const color1 = generateSectorColor(0, 0);
+    const color2 = generateSectorColor(0, 6);
+
+    // 提取色相值
+    const hue1 = parseInt(color1.match(/^hsl\((\d+(\.\d+)?)/)?.[1] || '0');
+    const hue2 = parseInt(color2.match(/^hsl\((\d+(\.\d+)?)/)?.[1] || '0');
+
+    expect(hue1).not.toBe(hue2);
+  });
+
+  it('应该为单层生成颜色', () => {
+    const color = generateSectorColor(0, 0, 1, 24);
+    expect(color).toMatch(/^hsl\(\d+(\.\d+)? \d+% \d+%\)$/);
+  });
+
+  it('应该处理大量层数', () => {
+    const color1 = generateSectorColor(0, 0, 31, 24);
+    const color2 = generateSectorColor(30, 0, 31, 24);
+    
+    const light1 = parseInt(color1.match(/(\d+)%\)$/)?.[1] || '0');
+    const light2 = parseInt(color2.match(/(\d+)%\)$/)?.[1] || '0');
+    
+    expect(light1).toBeGreaterThan(light2);
+  });
+});
+
+describe('annularSectorInsetPath', () => {
+  it('应该生成内缩路径', () => {
+    const path = annularSectorInsetPath(50, 100, 0, 90, 2);
+    expect(path).toContain('M ');
+    expect(path).toContain('A ');
+    expect(path).toContain('Z');
+  });
+
+  it('应该在内缩过大时返回空路径', () => {
+    const path = annularSectorInsetPath(50, 60, 0, 90, 20);
+    expect(path).toBe('');
+  });
+
+  it('应该处理小角度扇区', () => {
+    const path = annularSectorInsetPath(50, 100, 0, 5, 2);
+    expect(path).toBeTruthy();
+  });
+
+  it('应该处理从圆心开始的扇区', () => {
+    const path = annularSectorInsetPath(0, 100, 0, 90, 2);
+    expect(path).toContain('M ');
+    expect(path).toContain('A ');
+  });
+});
+
+describe('generateTextPath', () => {
+  it('应该生成正向文字路径', () => {
+    const path = generateTextPath(50, 100, 0, 90, false, 'middle', 12);
+    expect(path).toContain('M ');
+    expect(path).toContain('A ');
+    expect(path).toContain('0 1'); // 正向扫描
+  });
+
+  it('应该生成反向文字路径', () => {
+    const path = generateTextPath(50, 100, 0, 90, true, 'middle', 12);
+    expect(path).toContain('M ');
+    expect(path).toContain('A ');
+    expect(path).toContain('0 0'); // 反向扫描
+  });
+
+  it('应该在 centroid 模式下使用形心半径', () => {
+    const pathCentroid = generateTextPath(50, 100, 0, 90, false, 'centroid', 12);
+    const pathMiddle = generateTextPath(50, 100, 0, 90, false, 'middle', 12);
+    expect(pathCentroid).not.toBe(pathMiddle);
+  });
+
+  it('应该处理跨越360°的扇区', () => {
+    const path = generateTextPath(50, 100, 315, 45, false, 'middle', 12);
+    expect(path).toContain('M ');
+    expect(path).toContain('A ');
+  });
+
+  it('应该处理大角度扇区', () => {
+    const path = generateTextPath(50, 100, 0, 270, false, 'middle', 12);
+    expect(path).toContain('M ');
+    expect(path).toContain('A ');
+  });
+});
+
+describe('generateVerticalTextPath', () => {
+  it('应该生成竖排文字路径', () => {
+    const path = generateVerticalTextPath(50, 100, 0, 30, 15, 'middle', 12);
+    expect(path).toContain('M ');
+    expect(path).toContain('L ');
+  });
+
+  it('应该在 centroid 模式下使用形心', () => {
+    const pathCentroid = generateVerticalTextPath(50, 100, 0, 30, 15, 'centroid', 12);
+    const pathMiddle = generateVerticalTextPath(50, 100, 0, 30, 15, 'middle', 12);
+    expect(pathCentroid).not.toBe(pathMiddle);
+  });
+
+  it('应该处理不同的角度', () => {
+    const path1 = generateVerticalTextPath(50, 100, 0, 30, 15, 'middle', 12);
+    const path2 = generateVerticalTextPath(50, 100, 0, 30, 180, 'middle', 12);
+    expect(path1).not.toBe(path2);
+  });
+
+  it('应该处理窄扇区', () => {
+    const path = generateVerticalTextPath(80, 100, 0, 10, 5, 'middle', 12);
+    expect(path).toContain('M ');
+    expect(path).toContain('L ');
+  });
+});
+
+describe('getTextColorForBackground', () => {
+  it('应该为深色背景返回白色', () => {
+    const color = getTextColorForBackground('hsl(180 70% 25%)');
+    expect(color).toBe('#ffffff');
+  });
+
+  it('应该为浅色背景返回深色', () => {
+    const color = getTextColorForBackground('hsl(180 70% 85%)');
+    expect(color).toBe('#111827');
+  });
+
+  it('应该处理边界值（50%）', () => {
+    const color = getTextColorForBackground('hsl(180 70% 50%)');
+    expect(color).toBe('#111827');
+  });
+
+  it('应该处理边界值（49%）', () => {
+    const color = getTextColorForBackground('hsl(180 70% 49%)');
+    expect(color).toBe('#ffffff');
+  });
+
+  it('应该处理无效输入', () => {
+    const color = getTextColorForBackground('invalid');
+    expect(color).toBe('#111827');
+  });
+});
+
+describe('calculateSectorFontSize', () => {
+  it('应该为标准扇区计算字体大小', () => {
+    const fontSize = calculateSectorFontSize(50, 100, 0, 90, 4, 3, 24);
+    expect(fontSize).toBeGreaterThan(3);
+    expect(fontSize).toBeLessThanOrEqual(24);
+  });
+
+  it('应该为窄扇区返回较小的字体', () => {
+    const narrowSize = calculateSectorFontSize(90, 100, 0, 10, 4, 3, 24);
+    const wideSize = calculateSectorFontSize(50, 100, 0, 90, 4, 3, 24);
+    expect(narrowSize).toBeLessThan(wideSize);
+  });
+
+  it('应该根据文字长度调整', () => {
+    const shortText = calculateSectorFontSize(50, 100, 0, 90, 2, 3, 24);
+    const longText = calculateSectorFontSize(50, 100, 0, 90, 8, 3, 24);
+    expect(shortText).toBeGreaterThan(longText);
+  });
+
+  it('应该为小角度扇区应用额外限制', () => {
+    const size1 = calculateSectorFontSize(50, 100, 0, 10, 2, 3, 24);
+    const size2 = calculateSectorFontSize(50, 100, 0, 90, 2, 3, 24);
+    expect(size1).toBeLessThan(size2);
+  });
+
+  it('应该尊重最小字体大小限制', () => {
+    const fontSize = calculateSectorFontSize(95, 100, 0, 5, 10, 6, 24);
+    expect(fontSize).toBeGreaterThanOrEqual(6);
+  });
+
+  it('应该尊重最大字体大小限制', () => {
+    const fontSize = calculateSectorFontSize(0, 200, 0, 180, 1, 3, 20);
+    expect(fontSize).toBeLessThanOrEqual(20);
+  });
+
+  it('应该处理零文字长度', () => {
+    const fontSize = calculateSectorFontSize(50, 100, 0, 90, 0, 3, 24);
+    expect(fontSize).toBe(3);
+  });
+
+  it('应该处理从圆心开始的扇区', () => {
+    const fontSize = calculateSectorFontSize(0, 100, 0, 90, 4, 3, 24);
+    expect(fontSize).toBeGreaterThan(3);
+    expect(fontSize).toBeLessThanOrEqual(24);
+  });
+});