describe-role-definition-truncation.test.js
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/**
* Unit Test — describeRoleDefinition 截断可见性（本体装配静默坑修复）
*
* 原实现把 agent.md 悄悄切到前 2000 字：职能说明如果排在文件后半（本体写得长一点
* 就很常见），workgraph-planning 拿到的角色定义里根本没有这句话，而它不会知道
* 自己看到的是被切过的半截——「硬约束不前置就等于没写」。
*
* 这里锁的是：截断了就必须带⚠️提示 + 完整路径；没截断（原文本来就短）就什么都不多说。
* 用真实 system/agents/ 目录起一个 zz- 前缀的临时本体（同款手法见
* base-graduation-gate.test.js 的 zz-hire-test-co），跑完删掉，不留痕迹——
* locator.bodyDir() 没有 env 覆盖点，读的就是真实仓库路径，测试只能顺着这条路走。
*/
import { describe, it, expect, afterEach } from 'vitest';
import fs from 'fs';
import path from 'path';
const REPO_ROOT = path.resolve(__dirname, '../../..');
const AGENTS_ROOT = path.join(REPO_ROOT, 'system', 'agents');
describe('describeRoleDefinition 截断可见性', () => {
const testAgentId = 'zz-test-role-trunc';
const testAgentDir = path.join(AGENTS_ROOT, testAgentId);
afterEach(() => {
fs.rmSync(testAgentDir, { recursive: true, force: true });
});
it('agent.md 超过 2000 字时，截断段落带⚠️提示 + 完整路径', () => {
fs.mkdirSync(testAgentDir, { recursive: true });
const longContent = `# ${testAgentId}\n` + 'x'.repeat(2500);
fs.writeFileSync(path.join(testAgentDir, 'agent.md'), longContent);
delete require.cache[require.resolve('../../services/graph-engine.js')];
const engine = require('../../services/graph-engine.js');
const result = engine.describeRoleDefinition({ systemAgentId: testAgentId, companyId: null });
expect(result).toContain(`⚠️ 原文共 ${longContent.length} 字，已截断到前 2000 字`);
expect(result).toContain(path.join(testAgentDir, 'agent.md'));
// 截断本身没变——2000 字上限仍是故意的，摘录长度不应该被这次修复顺带改掉
const excerpt = result.split('：\n')[1].split('\n（⚠️')[0];
expect(excerpt.length).toBe(2000);
});
it('agent.md 不超过 2000 字时，不带任何截断提示', () => {
fs.mkdirSync(testAgentDir, { recursive: true });
const shortContent = `# ${testAgentId}\n短本体`;
fs.writeFileSync(path.join(testAgentDir, 'agent.md'), shortContent);
delete require.cache[require.resolve('../../services/graph-engine.js')];
const engine = require('../../services/graph-engine.js');
const result = engine.describeRoleDefinition({ systemAgentId: testAgentId, companyId: null });
expect(result).not.toContain('⚠️');
expect(result).toContain('短本体');
});
it('本体不存在时回落到明确的「未找到」提示，不是截断逻辑的边缘情况', () => {
delete require.cache[require.resolve('../../services/graph-engine.js')];
const engine = require('../../services/graph-engine.js');
const result = engine.describeRoleDefinition({ systemAgentId: 'zz-does-not-exist-role-trunc', companyId: null });
expect(result).toContain('未找到该本体的 agent.md');
});
});