zerobyte/app/server/modules/agents/__tests__/agents-manager.test.ts

116 lines
3.4 KiB
TypeScript

import { EventEmitter } from "node:events";
import { PassThrough } from "node:stream";
import { Effect } from "effect";
import { afterEach, beforeEach, expect, test, vi } from "vitest";
import { fromAny } from "@total-typescript/shoehorn";
import type { ProcessWithAgentRuntime } from "../helpers/runtime-state.dev";
const spawnMock = vi.fn();
vi.mock("node:child_process", async () => {
return { spawn: spawnMock };
});
let startLocalAgent: (typeof import("../agents-manager"))["startLocalAgent"];
let startAgentController: (typeof import("../agents-manager"))["startAgentController"];
let stopLocalAgent: (typeof import("../agents-manager"))["stopLocalAgent"];
let stopAgentController: (typeof import("../agents-manager"))["stopAgentController"];
let config: (typeof import("~/server/core/config"))["config"];
let originalEnableLocalAgent: boolean;
const processWithAgentRuntime = process as ProcessWithAgentRuntime;
const setAgentRuntime = () => {
processWithAgentRuntime.__zerobyteAgentRuntime = {
agentManager: fromAny({ stop: Effect.void, waitForAgentReady: vi.fn(async () => true) }),
localAgent: null,
isStoppingLocalAgent: false,
localAgentRestartTimeout: null,
};
};
type FakeChildProcess = EventEmitter & {
stdout: PassThrough;
stderr: PassThrough;
exitCode: number | null;
signalCode: NodeJS.Signals | null;
kill: ReturnType<typeof vi.fn>;
};
const createFakeChild = () => {
const child = new EventEmitter() as FakeChildProcess;
child.stdout = new PassThrough();
child.stderr = new PassThrough();
child.exitCode = null;
child.signalCode = null;
child.kill = vi.fn(() => {
child.exitCode = 0;
child.emit("exit", 0, null);
return true;
});
return child;
};
beforeEach(async () => {
vi.resetModules();
({ config } = await import("~/server/core/config"));
originalEnableLocalAgent = config.flags.enableLocalAgent;
config.flags.enableLocalAgent = true;
setAgentRuntime();
({ startAgentController, startLocalAgent, stopAgentController, stopLocalAgent } =
await import("../agents-manager"));
});
afterEach(async () => {
await stopLocalAgent();
await stopAgentController();
config.flags.enableLocalAgent = originalEnableLocalAgent;
delete processWithAgentRuntime.__zerobyteAgentRuntime;
spawnMock.mockReset();
vi.restoreAllMocks();
vi.useRealTimers();
});
test("respawns the local agent after an unexpected exit", async () => {
vi.useFakeTimers();
const firstChild = createFakeChild();
const secondChild = createFakeChild();
spawnMock.mockReturnValueOnce(firstChild).mockReturnValueOnce(secondChild);
await startLocalAgent();
firstChild.exitCode = 1;
firstChild.emit("exit", 1, null);
await vi.advanceTimersByTimeAsync(1_000);
expect(spawnMock).toHaveBeenCalledTimes(2);
});
test("does not respawn the local agent after an intentional stop", async () => {
vi.useFakeTimers();
const child = createFakeChild();
spawnMock.mockReturnValue(child);
await startLocalAgent();
await stopLocalAgent();
await vi.advanceTimersByTimeAsync(1_000);
expect(spawnMock).toHaveBeenCalledTimes(1);
expect(child.kill).toHaveBeenCalledTimes(1);
});
test("does not start the websocket server when the local agent flag is disabled", async () => {
config.flags.enableLocalAgent = false;
const serve = vi.spyOn(Bun, "serve");
await startAgentController();
expect(serve).not.toHaveBeenCalled();
expect(processWithAgentRuntime.__zerobyteAgentRuntime?.agentManager).toBeNull();
});