test: add a missing regression test for GH-329

Add a missing regression test for connectAndInspect with empty array of
interfaces.

PR-URL: #359
Reviewed-By: Dmytro Nechai <nechaido@gmail.com>
Reviewed-By: Mykola Bilochub <nbelochub@gmail.com>

test/node/regress-gh-329.js

@@ -0,0 +1,42 @@
+// Regression test for https://github.com/metarhia/jstp/pull/329
+
+'use strict';
+
+const test = require('tap');
+const jstp = require('../..');
+
+const app = new jstp.Application('app', {});
+const server = jstp.net.createServer([app]);
+
+server.on('log', (connection, event) => {
+  if (event === 'inspect') {
+    test.fail('must not send inspect message');
+  }
+});
+
+test.plan(4);
+
+server.listen(0, () => {
+  jstp.net.connectAndInspect(
+    app.name,
+    null,
+    [],
+    server.address().port,
+    (error, connection, api) => {
+      test.pass('must invoke the callback');
+      test.assertNot(error, 'must connect to server');
+      test.equal(
+        Object.keys(connection.remoteProxies).length,
+        0,
+        'no remote proxy instances must be created'
+      );
+      test.equal(
+        Object.keys(api).length,
+        0,
+        'no remote proxy instances must be passed to callback'
+      );
+      connection.close();
+      server.close();
+    }
+  );
+});