test: add test for net-socket-setTimeout callback

PR-URL: https://github.com/nodejs/node/pull/25084
Refs: https://github.com/nodejs/node/issues/19060
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/test/parallel/test-net-socket-timeout.js b/test/parallel/test-net-socket-timeout.js
index a30ab8ce29..f0f5f194bf 100644
--- a/test/parallel/test-net-socket-timeout.js
+++ b/test/parallel/test-net-socket-timeout.js
@@ -31,6 +31,9 @@ const nonNumericDelays = [
 ];
 const badRangeDelays = [-0.001, -1, -Infinity, Infinity, NaN];
 const validDelays = [0, 0.001, 1, 1e6];
+const invalidCallbacks = [
+  1, '100', true, false, null, {}, [], Symbol('test')
+];
 
 
 for (let i = 0; i < nonNumericDelays.length; i++) {
@@ -49,6 +52,19 @@ for (let i = 0; i < validDelays.length; i++) {
   s.setTimeout(validDelays[i], () => {});
 }
 
+for (let i = 0; i < invalidCallbacks.length; i++) {
+  [0, 1].forEach((mesc) =>
+    common.expectsError(
+      () => s.setTimeout(mesc, invalidCallbacks[i]),
+      {
+        code: 'ERR_INVALID_CALLBACK',
+        type: TypeError,
+        message: 'Callback must be a function'
+      }
+    )
+  );
+}
+
 const server = net.Server();
 server.listen(0, common.mustCall(() => {
   const socket = net.createConnection(server.address().port);