File size: 3,729 Bytes
bc575bc | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | import type { StreamFn } from "@earendil-works/pi-agent-core";
import {
type AssistantMessage,
createAssistantMessageEventStream,
fauxAssistantMessage,
type Model,
type SimpleStreamOptions,
} from "@earendil-works/pi-ai";
import { describe, expect, it } from "vitest";
import { generateBranchSummary } from "../src/core/compaction/index.ts";
import type { SessionEntry } from "../src/core/session-manager.ts";
const model: Model<"anthropic-messages"> = {
id: "test-model",
name: "Test Model",
api: "anthropic-messages",
provider: "anthropic",
baseUrl: "https://api.anthropic.com",
reasoning: false,
input: ["text"],
cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
contextWindow: 200000,
maxTokens: 8192,
};
const entries: SessionEntry[] = [
{
type: "message",
id: "branch-user",
parentId: null,
timestamp: new Date(1).toISOString(),
message: { role: "user", content: "Abandoned request", timestamp: 1 },
},
];
function response(content: AssistantMessage["content"]): AssistantMessage {
return {
...fauxAssistantMessage(""),
content,
api: model.api,
provider: model.provider,
model: model.id,
};
}
describe("branch summarization", () => {
it("does not override tool choice for branch summaries", async () => {
let requestOptions: SimpleStreamOptions | undefined;
const streamFn: StreamFn = (_model, _context, options) => {
requestOptions = options;
const stream = createAssistantMessageEventStream();
queueMicrotask(() =>
stream.push({ type: "done", reason: "stop", message: response([{ type: "text", text: "summary" }]) }),
);
return stream;
};
await generateBranchSummary(entries, {
model,
signal: new AbortController().signal,
streamFn,
});
expect(requestOptions?.maxTokens).toBe(4096);
expect(requestOptions?.toolChoice).toBeUndefined();
});
it("clamps the branch summary output cap to the model limit", async () => {
let requestOptions: SimpleStreamOptions | undefined;
const streamFn: StreamFn = (_model, _context, options) => {
requestOptions = options;
const stream = createAssistantMessageEventStream();
queueMicrotask(() =>
stream.push({ type: "done", reason: "stop", message: response([{ type: "text", text: "summary" }]) }),
);
return stream;
};
await generateBranchSummary(entries, {
model: { ...model, maxTokens: 1024 },
signal: new AbortController().signal,
streamFn,
});
expect(requestOptions?.maxTokens).toBe(1024);
});
it("rejects tool calls from branch summaries", async () => {
const streamFn: StreamFn = () => {
const stream = createAssistantMessageEventStream();
queueMicrotask(() =>
stream.push({
type: "done",
reason: "toolUse",
message: response([
{ type: "toolCall", id: "tool-call-1", name: "read", arguments: { path: "README.md" } },
]),
}),
);
return stream;
};
const result = await generateBranchSummary(entries, {
model,
signal: new AbortController().signal,
streamFn,
});
expect(result.error).toBe("Branch summarization attempted to call a tool");
});
it("rejects length-limited branch summaries", async () => {
const streamFn: StreamFn = () => {
const stream = createAssistantMessageEventStream();
queueMicrotask(() =>
stream.push({
type: "done",
reason: "length",
message: { ...response([{ type: "text", text: "partial" }]), stopReason: "length" },
}),
);
return stream;
};
const result = await generateBranchSummary(entries, {
model,
signal: new AbortController().signal,
streamFn,
});
expect(result.error).toBe(
"Branch summarization failed: generation hit the token cap and the summary is incomplete",
);
});
});
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