try fix unhandled rejection in test

Author: mifi

test/testserver.ts

@@ -2,6 +2,7 @@ import { createServer, RequestListener, Server } from 'http'
 import { setTimeout } from 'timers/promises'
 import got from 'got'
 import debug from 'debug'
+import { ExecaError } from 'execa'
 
 import { createTunnel, CreateTunnelResult } from './tunnel.js'
 
@@ -76,6 +77,12 @@ export async function createTestServer(onRequest: RequestListener) {
   try {
     tunnel = createTunnel({ cloudFlaredPath: process.env.CLOUDFLARED_PATH, port })
 
+    tunnel.process?.catch((err) => {
+      if (!(err instanceof ExecaError && err.isForcefullyTerminated)) {
+        log('Process failed', err);
+      }
+    })
+
     log('waiting for tunnel to be created')
     const tunnelPublicUrl = await tunnel.urlPromise
     log('tunnel created', tunnelPublicUrl)