dgram: check close callback is function

PR-URL: https://github.com/iojs/io.js/pull/609
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Evan Lucas <evanlucas@me.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/test/parallel/test-dgram-close-is-not-callback.js b/test/parallel/test-dgram-close-is-not-callback.js
new file mode 100644
index 0000000000..94035af970
--- /dev/null
+++ b/test/parallel/test-dgram-close-is-not-callback.js
@@ -0,0 +1,21 @@
+var assert = require('assert');
+var common = require('../common');
+var dgram = require('dgram');
+
+var buf = new Buffer(1024);
+buf.fill(42);
+
+var socket = dgram.createSocket('udp4');
+var closeEvents = 0;
+socket.send(buf, 0, buf.length, common.PORT, 'localhost');
+
+// if close callback is not function, ignore the argument.
+socket.close('bad argument');
+
+socket.on('close', function() {
+  ++closeEvents;
+});
+
+process.on('exit', function() {
+  assert.equal(closeEvents, 1);
+});