test: refactor test-http-set-timeout-server

* Use `common.mustCall()` to track callback invocations
* Remove console.log() statements unrelated to the test
* Add blank line to conform with test-writing guide

PR-URL: #13802
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

test/parallel/test-http-set-timeout-server.js

@@ -1,5 +1,6 @@
 'use strict';
 const common = require('../common');
+
 const assert = require('assert');
 const http = require('http');
 const net = require('net');
@@ -9,16 +10,13 @@ const tests = [];
 function test(fn) {
  if (!tests.length)
  process.nextTick(run);
- tests.push(fn);
+ tests.push(common.mustCall(fn));
 }
 
 function run() {
  const fn = tests.shift();
  if (fn) {
- console.log('# %s', fn.name);
  fn(run);
- } else {
- console.log('ok');
  }
 }
 
@@ -27,7 +25,7 @@ test(function serverTimeout(cb) {
  // just do nothing, we should get a timeout event.
  });
  server.listen(common.mustCall(function() {
- http.get({ port: server.address().port }).on('error', common.noop);
+ http.get({ port: server.address().port }).on('error', common.mustCall());
  }));
  const s = server.setTimeout(50, common.mustCall(function(socket) {
  socket.destroy();
@@ -50,7 +48,7 @@ test(function serverRequestTimeout(cb) {
  server.listen(common.mustCall(function() {
  const port = server.address().port;
  const req = http.request({ port: port, method: 'POST' });
- req.on('error', common.noop);
+ req.on('error', common.mustCall());
  req.write('Hello');
  // req is in progress
  }));
@@ -68,7 +66,7 @@ test(function serverResponseTimeout(cb) {
  });
  server.listen(common.mustCall(function() {
  const port = server.address().port;
- http.get({ port: port }).on('error', common.noop);
+ http.get({ port: port }).on('error', common.mustCall());
  }));
 });
 
@@ -86,7 +84,7 @@ test(function serverRequestNotTimeoutAfterEnd(cb) {
  });
  server.listen(common.mustCall(function() {
  const port = server.address().port;
- http.get({ port: port }).on('error', common.noop);
+ http.get({ port: port }).on('error', common.mustCall());
  }));
 });