54 lines
2.1 KiB
TypeScript
54 lines
2.1 KiB
TypeScript
/**
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* 验证「会话卫生」所依赖的机制是否真的有效 —— 不需要模型、不需要显卡。
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*
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* 背景：熔断中止后，我用 `agent.state.messages = [...]` 把被污染的尾巴换成一句干净的说明。
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* 但实测里下一轮仍在复读旧对话，我当时记为"卫生没生效"。这里直接验证机制本身：
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* 1) `agent.state.messages` 赋值是否被采纳？
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* 2) 赋值是否复制数组（Pi 的注释声称会复制）？
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* 3) 赋值后 `get messages` 读回来的是不是新内容？
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*/
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import { Agent } from "@earendil-works/pi-agent-core";
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const agent = new Agent({
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initialState: {
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systemPrompt: "test",
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model: {} as never,
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tools: [],
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messages: [],
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thinkingLevel: "off",
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},
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streamFn: (() => {
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throw new Error("not used");
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}) as never,
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sessionId: "hygiene-check",
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});
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const before = agent.state.messages.length;
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console.log(`初始 messages 长度 = ${before}`);
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const replacement = [
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{ role: "user", content: [{ type: "text", text: "原始问题" }] },
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{ role: "assistant", content: [{ type: "text", text: "(本轮中止说明)" }] },
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];
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agent.state.messages = replacement as never;
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const after = agent.state.messages;
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console.log(`赋值后 messages 长度 = ${after.length}`);
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console.log(`内容与预期一致 = ${JSON.stringify(after) === JSON.stringify(replacement)}`);
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// 复制语义：改原数组不应影响内部状态
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replacement.push({ role: "user", content: [{ type: "text", text: "事后追加" }] } as never);
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console.log(`改动源数组后内部长度 = ${agent.state.messages.length}（若仍为 2，说明是复制）`);
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// 读回来的对象是不是同一引用（对象字面量 getter 每次返回同一个数组）
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const first = agent.state.messages;
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const second = agent.state.messages;
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console.log(`两次读取是同一引用 = ${first === second}`);
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console.log(
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after.length === 2 && agent.state.messages.length === 2
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? "结论：赋值机制有效 —— 会话卫生的失败不能归因于此"
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: "结论：赋值机制无效 —— 这就是会话卫生失败的原因",
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);
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