process: allow reading umask in workers

Refs: https://github.com/nodejs/node/issues/25448
PR-URL: https://github.com/nodejs/node/pull/25526
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/test/parallel/test-process-umask.js b/test/parallel/test-process-umask.js
index b1e0c08bcb..592463eca1 100644
--- a/test/parallel/test-process-umask.js
+++ b/test/parallel/test-process-umask.js
@@ -22,8 +22,15 @@
 'use strict';
 const common = require('../common');
 const assert = require('assert');
-if (!common.isMainThread)
-  common.skip('process.umask is not available in Workers');
+
+if (!common.isMainThread) {
+  assert.strictEqual(typeof process.umask(), 'number');
+  assert.throws(() => {
+    process.umask('0664');
+  }, { code: 'ERR_WORKER_UNSUPPORTED_OPERATION' });
+
+  common.skip('Setting process.umask is not supported in Workers');
+}
 
 // Note in Windows one can only set the "user" bits.
 let mask;