test: add test for PR 6909

It runs correctly if the IPC messages are emitted in the nextTick.
Otherwise, it never exits.

Author: santigimeno

test/parallel/test-cluster-ipc-throw.js

@@ -0,0 +1,22 @@
+'use strict';
+const common = require('../common');
+const http = require('http');
+const cluster = require('cluster');
+
+const server = http.createServer();
+if (cluster.isMaster) {
+  server.listen(common.PORT);
+  const worker = cluster.fork();
+  worker.on('exit', common.mustCall(() => {
+    server.close();
+  }));
+} else {
+  process.on('uncaughtException', common.mustCall((e) => {
+  }));
+
+  server.listen(common.PORT);
+  server.on('error', common.mustCall((e) => {
+    cluster.worker.disconnect();
+    throw e;
+  }));
+}