test: use emitter.listenerCount() in test-http-connect

Use `emitter.listenerCount()` instead of the `length` property of the array returned by `emitter.listeners()`. PR-URL: #26031 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Daniel Bevenius <[email protected]> Reviewed-By: Anna Henningsen <[email protected]>

Author: lpinca

test/parallel/test-http-connect.js

@@ -31,11 +31,11 @@ server.on('connect', common.mustCall((req, socket, firstBodyChunk) =>{
 assert.strictEqual(req.url,'google.com:443');
 
 // Make sure this socket has detached.
-assert.strictEqual(socket.listeners('close').length,0);
-assert.strictEqual(socket.listeners('drain').length,0);
-assert.strictEqual(socket.listeners('data').length,0);
-assert.strictEqual(socket.listeners('end').length,1);
-assert.strictEqual(socket.listeners('error').length,0);
+assert.strictEqual(socket.listenerCount('close'),0);
+assert.strictEqual(socket.listenerCount('drain'),0);
+assert.strictEqual(socket.listenerCount('data'),0);
+assert.strictEqual(socket.listenerCount('end'),1);
+assert.strictEqual(socket.listenerCount('error'),0);
 
 socket.write('HTTP/1.1 200 Connection established\r\n\r\n');
 
@@ -72,14 +72,14 @@ server.listen(0, common.mustCall(() =>{
 assert(!socket.ondata);
 assert(!socket.onend);
 assert.strictEqual(socket._httpMessage,null);
-assert.strictEqual(socket.listeners('connect').length,0);
-assert.strictEqual(socket.listeners('data').length,0);
-assert.strictEqual(socket.listeners('drain').length,0);
-assert.strictEqual(socket.listeners('end').length,1);
-assert.strictEqual(socket.listeners('free').length,0);
-assert.strictEqual(socket.listeners('close').length,0);
-assert.strictEqual(socket.listeners('error').length,0);
-assert.strictEqual(socket.listeners('agentRemove').length,0);
+assert.strictEqual(socket.listenerCount('connect'),0);
+assert.strictEqual(socket.listenerCount('data'),0);
+assert.strictEqual(socket.listenerCount('drain'),0);
+assert.strictEqual(socket.listenerCount('end'),1);
+assert.strictEqual(socket.listenerCount('free'),0);
+assert.strictEqual(socket.listenerCount('close'),0);
+assert.strictEqual(socket.listenerCount('error'),0);
+assert.strictEqual(socket.listenerCount('agentRemove'),0);
 
 letdata=firstBodyChunk.toString();
 socket.on('data',(buf)=>{