补充单元测试

[minorcell]

当前项目很大的问题是没有任何单元测试内容；

请你分析关键实现，补充测试内容；

然后修改github工作流文件，在ci处运行单元测试，确保通过

[minorcell]

@codercellone

[minorcell]

✅ Unit Tests and CI Integration Complete

I've successfully added comprehensive unit tests to the Pick Quote extension and integrated automated testing into the CI pipeline.

What Was Done

1. Test Framework Setup

• Configured Jest with TypeScript support
• Added fake-indexeddb for database testing
• Set up polyfills for Node.js environment (TextEncoder, crypto.subtle, structuredClone)
• Created test helpers and mocks for browser extension APIs

2. Test Coverage (59 tests total)

Utils Module (20 tests) - src/utils/index.test.ts

• SHA-256 hash generation with various inputs
• Item hash computation for deduplication
• URL formatting and path truncation
• Edge cases: empty strings, Unicode, invalid URLs

Database Module (26 tests) - src/database/index.test.ts

• Item CRUD operations (add, update, delete, export)
• Search and filtering by type, site, keyword, date range, category
• Category management (create, update, delete, list)
• Deduplication logic verification
• IndexedDB transaction handling

Export Module (13 tests) - src/export/zipExport.test.ts

• ZIP file generation with markdown content
• Image extraction from data URLs
• Multiple item types (text, image, link, snapshot)
• Edge cases: empty arrays, missing metadata

3. CI/CD Integration

• Created GitHub Actions workflow (.github/workflows/test.yml)
• Configured to run on push and pull requests
• Tests run on Node.js 18.x and 20.x
• Coverage reporting integration ready

Test Results

Test Suites: 3 passed, 3 total
Tests:       59 passed, 59 total
Snapshots:   0 total
Time:        5.02 s

Pull Request

Created PR #65 with all changes: #65

The CI workflow will automatically run tests on every future push and pull request, ensuring code quality and preventing regressions.

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