test: add test case for listeners

PR-URL: #56282
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Jason Zhang <[email protected]>
Reviewed-By: Jake Yuesong Li <[email protected]>

Author: origranot

test/parallel/test-event-emitter-listeners.js

@@ -86,6 +86,11 @@ function listener4() {
   assert.deepStrictEqual(ee.listeners('foo'), []);
 }
 
+{
+  const ee = new events.EventEmitter();
+  assert.deepStrictEqual(ee.listeners(), []);
+}
+
 {
   class TestStream extends events.EventEmitter {}
   const s = new TestStream();