util: add internal sleep() function

PR-URL: https://github.com/nodejs/node/pull/30787
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/test/parallel/test-util-sleep.js b/test/parallel/test-util-sleep.js
new file mode 100644
index 0000000000..e4cc62b8e0
--- /dev/null
+++ b/test/parallel/test-util-sleep.js
@@ -0,0 +1,19 @@
+// Flags: --expose-internals
+'use strict';
+require('../common');
+const assert = require('assert');
+const { sleep } = require('internal/util');
+
+[undefined, null, '', {}, true, false].forEach((value) => {
+  assert.throws(
+    () => { sleep(value); },
+    /The "msec" argument must be of type number/
+  );
+});
+
+[-1, 3.14, NaN, 4294967296].forEach((value) => {
+  assert.throws(
+    () => { sleep(value); },
+    /The value of "msec" is out of range/
+  );
+});