test: use mustCall(), not global state checks

Instead of pushing state into global arrays and checking the results
before exit, use common.mustCall() and make the checks immediately.

PR-URL: #25508
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-tls-socket-constructor-alpn-options-parsing.js

@@ -20,8 +20,6 @@ const fixtures = require('../common/fixtures');
 const key = fixtures.readKey('agent1-key.pem');
 const cert = fixtures.readKey('agent1-cert.pem');
 
-const protocols = [];
-
 const server = net.createServer(common.mustCall((s) => {
   const tlsSocket = new tls.TLSSocket(s, {
     isServer: true,
@@ -32,10 +30,9 @@ const server = net.createServer(common.mustCall((s) => {
   });
 
   tlsSocket.on('secure', common.mustCall(() => {
-    protocols.push({
-      alpnProtocol: tlsSocket.alpnProtocol,
-    });
+    assert.strictEqual(tlsSocket.alpnProtocol, 'http/1.1');
     tlsSocket.end();
+    server.close();
   }));
 }));
 
@@ -46,13 +43,7 @@ server.listen(0, common.mustCall(() => {
     ALPNProtocols: ['h2', 'http/1.1']
   };
 
-  tls.connect(alpnOpts, function() {
+  tls.connect(alpnOpts, common.mustCall(function() {
     this.end();
-
-    server.close();
-
-    assert.deepStrictEqual(protocols, [
-      { alpnProtocol: 'http/1.1' },
-    ]);
-  });
+  }));
 }));