test: use mustNotCall() in test-fs-watch

Use common.mustNotCall() in test/sequential/test-fs-watch.js in
situations where the call to watch() is expected to throw.

PR-URL: #13595
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.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: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/sequential/test-fs-watch.js

@@ -1,3 +1,24 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
 'use strict';
 const common = require('../common');
 const assert = require('assert');
@@ -109,15 +130,15 @@ fs.watch(__filename, {persistent: false}, function() {
 // https://github.com/joyent/node/issues/6690
 let oldhandle;
 assert.throws(function() {
-  const w = fs.watch(__filename, function(event, filename) { });
+  const w = fs.watch(__filename, common.mustNotCall());
   oldhandle = w._handle;
   w._handle = { close: w._handle.close };
   w.close();
 }, /^TypeError: Illegal invocation$/);
 oldhandle.close(); // clean up
 
 assert.throws(function() {
-  const w = fs.watchFile(__filename, {persistent: false}, common.noop);
+  const w = fs.watchFile(__filename, {persistent: false}, common.mustNotCall());
   oldhandle = w._handle;
   w._handle = { stop: w._handle.stop };
   w.stop();