1 files changed, 61 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-event-emitter-num-args.js b/tests/node_compat/test/parallel/test-event-emitter-num-args.js
new file mode 100644
index 000000000..05ed54cb6
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-event-emitter-num-args.js
@@ -0,0 +1,61 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+// 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';
+require('../common');
+const assert = require('assert');
+const events = require('events');
+
+const e = new events.EventEmitter();
+const num_args_emitted = [];
+
+e.on('numArgs', function() {
+  const numArgs = arguments.length;
+  num_args_emitted.push(numArgs);
+});
+
+e.on('foo', function() {
+  num_args_emitted.push(arguments.length);
+});
+
+e.on('foo', function() {
+  num_args_emitted.push(arguments.length);
+});
+
+e.emit('numArgs');
+e.emit('numArgs', null);
+e.emit('numArgs', null, null);
+e.emit('numArgs', null, null, null);
+e.emit('numArgs', null, null, null, null);
+e.emit('numArgs', null, null, null, null, null);
+
+e.emit('foo', null, null, null, null);
+
+process.on('exit', function() {
+  assert.deepStrictEqual(num_args_emitted, [0, 1, 2, 3, 4, 5, 4, 4]);
+});