test: resolve race condition in test-net-write-fully-async-*

Signed-off-by: Matteo Collina <hello@matteocollina.com>
PR-URL: #57022
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

Author: mcollina

test/parallel/test-net-write-fully-async-buffer.js

@@ -11,14 +11,14 @@ const data = Buffer.alloc(1000000);
 
 const server = net.createServer(common.mustCall(function(conn) {
   conn.resume();
+  server.close();
 })).listen(0, common.mustCall(function() {
   const conn = net.createConnection(this.address().port, common.mustCall(() => {
     let count = 0;
 
     function writeLoop() {
-      if (count++ === 200) {
-        conn.destroy();
-        server.close();
+      if (count++ === 20) {
+        conn.end();
         return;
       }
 

test/parallel/test-net-write-fully-async-hex-string.js

@@ -9,14 +9,14 @@ const data = Buffer.alloc(1000000).toString('hex');
 
 const server = net.createServer(common.mustCall(function(conn) {
   conn.resume();
+  server.close();
 })).listen(0, common.mustCall(function() {
   const conn = net.createConnection(this.address().port, common.mustCall(() => {
     let count = 0;
 
     function writeLoop() {
       if (count++ === 20) {
-        conn.destroy();
-        server.close();
+        conn.end();
         return;
       }