test: add test case for listeners

origranot · lpinca · commit a85ef6a04a8b · 2024-12-19T18:16:49.000+01:00
PR-URL: nodejs#56282 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Jason Zhang <xzha4350@gmail.com> Reviewed-By: Jake Yuesong Li <jake.yuesong@gmail.com>
diff --git a/test/parallel/test-event-emitter-listeners.js b/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();

Original file line number	Diff line number	Diff line change
`@@ -86,6 +86,11 @@ function listener4() {`
`86`	`86`	`assert.deepStrictEqual(ee.listeners('foo'), []);`
`87`	`87`	`}`
`88`	`88`
	`89`	`+{`
	`90`	`+ const ee = new events.EventEmitter();`
	`91`	`+ assert.deepStrictEqual(ee.listeners(), []);`
	`92`	`+}`
	`93`	`+`
`89`	`94`	`{`
`90`	`95`	`class TestStream extends events.EventEmitter {}`
`91`	`96`	`const s = new TestStream();`