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test: cover cluster error during dgram socket bind

When a non-exclusive dgram socket is bound from a cluster
worker, a handle is requested from the cluster module. This
commit adds coverage for the case where an error occurs while
retrieving the handle.

PR-URL: #11295
Reviewed-By: James M Snell <jasnell@gmail.com>
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cjihrig authored and italoacasas committed Feb 10, 2017
1 parent 2952512 commit 68eb97442dd5afc85155bc9b0e9d9d3014fd3343
Showing with 29 additions and 0 deletions.
  1. +29 −0 test/parallel/test-dgram-cluster-bind-error.js
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+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const cluster = require('cluster');
+const dgram = require('dgram');
+const { UV_UNKNOWN } = process.binding('uv');
+
+if (cluster.isMaster) {
+ cluster.fork();
+} else {
+ // When the socket attempts to bind, it requests a handle from the cluster.
+ // Force the cluster to send back an error code.
+ cluster._getServer = function(self, options, callback) {
+ callback(UV_UNKNOWN);
+ };
+
+ const socket = dgram.createSocket('udp4');
+
+ socket.on('error', common.mustCall((err) => {
+ assert(/^Error: bind UNKNOWN 0.0.0.0$/.test(err.toString()));
+ process.nextTick(common.mustCall(() => {
+ assert.strictEqual(socket._bindState, 0); // BIND_STATE_UNBOUND
+ socket.close();
+ cluster.worker.disconnect();
+ }));
+ }));
+
+ socket.bind(common.mustNotCall('Socket should not bind.'));
+}

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