test: refactor test-tls-invoked-queued

* use common.mustCall()/common.mustNotCall() as appropriate
* reorder require() statements per test writing guide
* add comment

PR-URL: https://github.com/nodejs/node/pull/13893
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-tls-invoke-queued.js

@@ -21,32 +21,32 @@
 
 'use strict';
 const common = require('../common');
-const assert = require('assert');
 
 if (!common.hasCrypto) {
   common.skip('missing crypto');
   return;
 }
-const tls = require('tls');
 
+const assert = require('assert');
 const fs = require('fs');
-
+const tls = require('tls');
 
 let received = '';
 
 const server = tls.createServer({
   key: fs.readFileSync(`${common.fixturesDir}/keys/agent1-key.pem`),
   cert: fs.readFileSync(`${common.fixturesDir}/keys/agent1-cert.pem`)
-}, function(c) {
+}, common.mustCall(function(c) {
-  c._write('hello ', null, function() {
+  c._write('hello ', null, common.mustCall(function() {
-    c._write('world!', null, function() {
+    c._write('world!', null, common.mustCall(function() {
       c.destroy();
-    });
+    }));
-    c._write(' gosh', null, common.noop);
+    // Data on next _write() will be written but callback will not be invoked
-  });
+    c._write(' gosh', null, common.mustNotCall());
+  }));
 
   server.close();
-}).listen(0, common.mustCall(function() {
+})).listen(0, common.mustCall(function() {
   const c = tls.connect(this.address().port, {
     rejectUnauthorized: false
   }, common.mustCall(function() {