import { expect, test, mock } from "bun:test"; import type { ChildProcess } from "node:child_process"; import { BonjourAdvertiser } from "./bonjourAdvertiser.ts";

function createFakeChild() { const child: Partial = {}; child.on = mock(() => child as ChildProcess); child.kill = mock(() => true); return child as ChildProcess & { on: ReturnType; kill: ReturnType; }; }

test("BonjourAdvertiser does not advertise until a tunnel URL exists", () => { const calls: string[][] = []; const spawnFn = mock((binary: string, args: string[]) => { calls.push([binary, ...args]); return createFakeChild(); });

const advertiser = new BonjourAdvertiser(8787, { spawnFn });

advertiser.start("");

expect(spawnFn).toHaveBeenCalledTimes(0);

advertiser.updateTunnelUrl("https://slide-doom-sensitive-utah.trycloudflare.com");

expect(spawnFn).toHaveBeenCalledTimes(1); expect(calls[0]).toEqual([ "dns-sd", "-R", "Clanky Dashboard", "_clanky._tcp", ".", "8787", "version=1", "tunnelUrl=https://slide-doom-sensitive-utah.trycloudflare.com" ]); });

test("BonjourAdvertiser clears the advertisement when the tunnel URL disappears", () => { const child = createFakeChild(); const spawnFn = mock(() => child);

const advertiser = new BonjourAdvertiser(8787, { spawnFn });

advertiser.start("https://slide-doom-sensitive-utah.trycloudflare.com"); advertiser.updateTunnelUrl("");

expect(spawnFn).toHaveBeenCalledTimes(1); expect(child.kill).toHaveBeenCalledTimes(1); });

test("BonjourAdvertiser ignores stale close events from an older child", () => { const children: Array<ReturnType> = []; const spawnFn = mock(() => { const child = createFakeChild(); children.push(child); return child; });

const advertiser = new BonjourAdvertiser(8787, { spawnFn });

advertiser.start("https://first.trycloudflare.com"); advertiser.updateTunnelUrl("https://second.trycloudflare.com");

expect(spawnFn).toHaveBeenCalledTimes(2); expect(children[0].kill).toHaveBeenCalledTimes(1);

const oldCloseHandler = children[0].on.mock.calls.find(([event]) => event === "close")?.[1] as (() => void) | undefined; oldCloseHandler?.();

advertiser.stop();

expect(children[1].kill).toHaveBeenCalledTimes(1); });