Files
pi-devin/test/stream-abort.test.mjs
T

105 lines
4.2 KiB
JavaScript

import assert from "node:assert/strict";
import test from "node:test";
import { normalizeContext } from "@earendil-works/pi-ai";
import { clearCachedUserJwt } from "../src/jwt.ts";
import { streamDevin } from "../src/stream.ts";
import { encodeMessage } from "../src/wire.ts";
const model = {
id: "test-model",
name: "Test model",
api: "devin-local",
provider: "devin",
baseUrl: "https://devin.invalid",
reasoning: false,
input: ["text", "image"],
cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
contextWindow: 262_000,
maxTokens: 1_000,
};
const user = (content) => ({ role: "user", content, timestamp: 1 });
test("aborting an in-flight stream reports aborted without leaking a rejection", async (t) => {
clearCachedUserJwt();
t.after(clearCachedUserJwt);
const rejections = [];
const onRejection = (reason) => rejections.push(reason);
process.on("unhandledRejection", onRejection);
t.after(() => process.off("unhandledRejection", onRejection));
const ac = new AbortController();
t.mock.method(globalThis, "fetch", async (url, options) => {
if (url === "https://devin.invalid/exa.auth_pb.AuthService/GetUserJwt") {
return new Response(encodeMessage(1, Buffer.from("eyJtest.jwt")));
}
assert.equal(url, "https://devin.invalid/exa.api_server_pb.ApiServerService/GetChatMessage");
// Mirror undici: an aborted fetch errors the response body with signal.reason.
const body = new ReadableStream({
start(controller) {
controller.enqueue(new TextEncoder().encode("partial"));
const onAbort = () => controller.error(options.signal.reason);
if (options.signal?.aborted) onAbort();
else options.signal?.addEventListener("abort", onAbort, { once: true });
},
});
return new Response(body);
});
const stream = streamDevin(model, normalizeContext({ messages: [user("hello")] }), {
apiKey: "synthetic-test-key",
env: { DEVIN_API_SERVER_URL: "https://devin.invalid" },
signal: ac.signal,
});
const events = [];
const consume = (async () => {
for await (const event of stream) events.push(event);
})();
ac.abort();
await consume;
// Give any floating rejection a chance to surface.
await new Promise((resolve) => setTimeout(resolve, 50));
const last = events.at(-1);
assert.equal(last?.type, "error");
assert.equal(last?.reason, "aborted");
assert.equal((await stream.result()).stopReason, "aborted");
assert.deepEqual(rejections, []);
});
test("real fetch cancellation after a response chunk leaves the process usable", { timeout: 10_000 }, async (t) => {
const { createServer } = await import("node:http");
const { once } = await import("node:events");
const { encodeString, encodeVarintField, frameConnectStream } = await import("../src/wire.ts");
clearCachedUserJwt(); t.after(clearCachedUserJwt);
let chats = 0;
const server = createServer((req, res) => {
if (req.url.endsWith("/GetUserJwt")) {
res.end(encodeString(1, "eyJtest.jwt")); return;
}
chats++;
res.writeHead(200, { "Content-Type": "application/connect+proto" });
res.write(frameConnectStream(encodeString(3, "started"), false));
if (chats > 1) {
res.write(frameConnectStream(encodeVarintField(5, 0), false));
res.end(Buffer.from([2, 0, 0, 0, 2, 123, 125]));
}
});
t.after(() => { server.closeAllConnections(); server.close(); });
server.listen(0, "127.0.0.1"); await once(server, "listening");
const ac = new AbortController();
const options = { apiKey: "synthetic-test-key", env: { DEVIN_API_SERVER_URL: `http://127.0.0.1:${server.address().port}` } };
const stream = streamDevin(model, normalizeContext({ messages: [user("hello")] }), { ...options, signal: ac.signal });
let sawText = false;
for await (const event of stream) {
if (event.type === "text_delta") { sawText = true; ac.abort(); }
}
assert.equal(sawText, true);
assert.equal((await stream.result()).stopReason, "aborted");
const next = streamDevin(model, normalizeContext({ messages: [user("again")] }), options);
for await (const event of next) assert.notEqual(event.type, "error");
assert.equal((await next.result()).stopReason, "stop");
assert.equal(chats, 2);
});