test: add test for HTTP client "aborted" event

PR-URL: https://github.com/nodejs/node/pull/7376
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

test/parallel/test-http-client-aborted-event.js

@@ -0,0 +1,18 @@
+'use strict';
+const common = require('../common');
+const http = require('http');
+
+const server = http.Server(function(req, res) {
+  res.write('Part of my res.');
+  res.destroy();
+});
+
+server.listen(0, common.mustCall(function() {
+  http.get({
+    port: this.address().port,
+    headers: { connection: 'keep-alive' }
+  }, common.mustCall(function(res) {
+    server.close();
+    res.on('aborted', common.mustCall(function() {}));
+  }));
+}));