test: refactor domain tests

* Check that noop callback is or isn't invoked as appropriate using
  common.mustCall() and common.mustNotCall()
* Fix typo in array literal

PR-URL: #13480
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

test/parallel/test-domain-crypto.js

@@ -17,7 +17,7 @@ global.domain = require('domain');
 
 // should not throw a 'TypeError: undefined is not a function' exception
 crypto.randomBytes(8);
-crypto.randomBytes(8, common.noop);
+crypto.randomBytes(8, common.mustCall());
 crypto.pseudoRandomBytes(8);
-crypto.pseudoRandomBytes(8, common.noop);
-crypto.pbkdf2('password', 'salt', 8, 8, common.noop);
+crypto.pseudoRandomBytes(8, common.mustCall());
+crypto.pbkdf2('password', 'salt', 8, 8, 'sha1', common.mustCall());

test/parallel/test-domain-timers.js

@@ -3,8 +3,6 @@ const common = require('../common');
 const domain = require('domain');
 const assert = require('assert');
 
-let timeout;
-
 const timeoutd = domain.create();
 
 timeoutd.on('error', common.mustCall(function(e) {
@@ -32,4 +30,4 @@ immediated.run(function() {
   });
 });
 
-timeout = setTimeout(common.noop, 10 * 1000);
+const timeout = setTimeout(common.mustNotCall(), 10 * 1000);

test/parallel/test-domain.js

@@ -1,7 +1,7 @@
 'use strict';
 // Simple tests of most basic domain functionality.
 
-const common = require('../common');
+require('../common');
 const assert = require('assert');
 const domain = require('domain');
 const events = require('events');
@@ -238,7 +238,7 @@ let fst = fs.createReadStream('stream for nonexistent file');
 d.add(fst);
 expectCaught++;
 
-[42, null, , false, common.noop, 'string'].forEach(function(something) {
+[42, null, undefined, false, () => {}, 'string'].forEach(function(something) {
   const d = new domain.Domain();
   d.run(function() {
     process.nextTick(function() {