claude-code/docs/test-plans/04-permission-system.md

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2026-04-01 21:19:41 +08:00
# 权限系统测试计划
## 概述
权限系统控制工具是否可以执行,包含规则解析器、权限检查管线和权限模式判断。测试重点是纯函数解析器和规则匹配逻辑。
## 被测文件
| 文件 | 关键导出 |
|------|----------|
| `src/utils/permissions/permissionRuleParser.ts` | `permissionRuleValueFromString`, `permissionRuleValueToString`, `escapeRuleContent`, `unescapeRuleContent`, `normalizeLegacyToolName`, `getLegacyToolNames` |
| `src/utils/permissions/PermissionMode.ts` | 权限模式常量和辅助函数 |
| `src/utils/permissions/permissions.ts` | `hasPermissionsToUseTool`, `getDenyRuleForTool`, `checkRuleBasedPermissions` |
| `src/types/permissions.ts` | `PermissionMode`, `PermissionBehavior`, `PermissionRule` 类型定义 |
---
## 测试用例
### src/utils/permissions/permissionRuleParser.ts
#### describe('escapeRuleContent')
- test('escapes backslashes first') — `'test\\value'``'test\\\\value'`
- test('escapes opening parentheses') — `'print(1)'``'print\\(1\\)'`
- test('escapes closing parentheses') — `'func()'``'func\\(\\)'`
- test('handles combined escape') — `'echo "test\\nvalue"'` 中的 `\\` 先转义
- test('handles empty string') — `''``''`
- test('no-op for string without special chars') — `'npm install'` 原样返回
#### describe('unescapeRuleContent')
- test('unescapes parentheses') — `'print\\(1\\)'``'print(1)'`
- test('unescapes backslashes last') — `'test\\\\nvalue'``'test\\nvalue'`
- test('handles empty string')
- test('roundtrip: escape then unescape returns original') — `unescapeRuleContent(escapeRuleContent(x)) === x`
#### describe('permissionRuleValueFromString')
- test('parses tool name only') — `'Bash'``{ toolName: 'Bash' }`
- test('parses tool name with content') — `'Bash(npm install)'``{ toolName: 'Bash', ruleContent: 'npm install' }`
- test('parses content with escaped parentheses') — `'Bash(python -c "print\\(1\\)")'` → ruleContent 为 `'python -c "print(1)"'`
- test('treats empty parens as tool-wide rule') — `'Bash()'``{ toolName: 'Bash' }`(无 ruleContent
- test('treats wildcard content as tool-wide rule') — `'Bash(*)'``{ toolName: 'Bash' }`
- test('normalizes legacy tool names') — `'Task'``{ toolName: 'Agent' }`(或对应的 AGENT_TOOL_NAME
- test('handles malformed input: no closing paren') — `'Bash(npm'` → 整个字符串作为 toolName
- test('handles malformed input: content after closing paren') — `'Bash(npm)extra'` → 整个字符串作为 toolName
- test('handles missing tool name') — `'(foo)'` → 整个字符串作为 toolName
#### describe('permissionRuleValueToString')
- test('serializes tool name only') — `{ toolName: 'Bash' }``'Bash'`
- test('serializes with content') — `{ toolName: 'Bash', ruleContent: 'npm install' }``'Bash(npm install)'`
- test('escapes content with parentheses') — ruleContent 含 `()` 时正确转义
- test('roundtrip: fromString then toString preserves value') — 往返一致
#### describe('normalizeLegacyToolName')
- test('maps Task to Agent tool name') — `'Task'` → AGENT_TOOL_NAME
- test('maps KillShell to TaskStop tool name') — `'KillShell'` → TASK_STOP_TOOL_NAME
- test('maps AgentOutputTool to TaskOutput tool name')
- test('returns unknown names unchanged') — `'UnknownTool'``'UnknownTool'`
#### describe('getLegacyToolNames')
- test('returns legacy names for canonical name') — 给定 AGENT_TOOL_NAME 返回包含 `'Task'`
- test('returns empty array for name with no legacy aliases')
---
### src/utils/permissions/permissions.ts — 需 Mock
#### describe('getDenyRuleForTool')
- test('returns deny rule matching tool name') — 匹配到 blanket deny 规则时返回
- test('returns null when no deny rules match') — 无匹配时返回 null
- test('matches MCP tools by server prefix') — `mcp__server` 规则匹配该 server 下的 MCP 工具
- test('does not match content-specific deny rules') — 有 ruleContent 的 deny 规则不作为 blanket deny
#### describe('checkRuleBasedPermissions')(集成级别)
- test('deny rule takes precedence over allow') — 同时有 allow 和 deny 时 deny 优先
- test('ask rule prompts user') — 匹配 ask 规则返回 `{ behavior: 'ask' }`
- test('allow rule permits execution') — 匹配 allow 规则返回 `{ behavior: 'allow' }`
- test('passthrough when no rules match') — 无匹配规则返回 passthrough
---
## Mock 需求
| 依赖 | Mock 方式 | 说明 |
|------|-----------|------|
| `bun:bundle` (feature) | 已 polyfill | BRIEF_TOOL_NAME 条件加载 |
| Tool 常量导入 | 实际值 | AGENT_TOOL_NAME 等从常量文件导入 |
| `appState` | mock object | `hasPermissionsToUseTool` 中的状态依赖 |
| Tool 对象 | mock object | 模拟 tool 的 name, checkPermissions 等 |
## 集成测试场景
### describe('Permission pipeline end-to-end')
- test('deny rule blocks tool before it runs') — deny 规则在 call 前拦截
- test('bypassPermissions mode allows all') — bypass 模式下 ask → allow
- test('dontAsk mode converts ask to deny') — dontAsk 模式下 ask → deny