timers: add another test for issue nodejs#8897

test/simple/test-timers-socker-timeout-removes-other-socket-unref-timer.js

@@ -0,0 +1,69 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+/*
+ * This test is a regression test for joyent/node#8897.
+ */
+
+var common = require('../common');
+var assert = require('assert');
+var net = require('net');
+
+var clients = [];
+
+var server = net.createServer(function onClient(client) {
+  clients.push(client);
+
+  if (clients.length === 2) {
+    /*
+     * Enroll two timers, and make the one supposed to fire first
+     * unenroll the other one supposed to fire later. This mutates
+     * the list of unref timers when traversing it, and exposes the
+     * original issue in joyent/node#8897.
+     */
+    clients[0].setTimeout(1, function onTimeout() {
+      clients[1].setTimeout(0);
+      clients[0].end();
+      clients[1].end();
+    });
+
+    // Use a delay that is higher than the lowest timer resolution accross all
+    // supported platforms, so that the two timers don't fire at the same time.
+    clients[1].setTimeout(50);
+  }
+});
+
+server.listen(common.PORT, '127.0.0.1', function() {
+  var nbClientsEnded = 0;
+
+  function addEndedClient(client) {
+    ++nbClientsEnded;
+    if (nbClientsEnded === 2) {
+      server.close();
+    }
+  }
+
+  var client1 = net.connect({ port: common.PORT })
+  client1.on('end', addEndedClient);
+
+  var client2 = net.connect({ port: common.PORT });
+  client2.on('end', addEndedClient);
+});