Commit tests to std

node/testdata/.gitignore

@@ -1,6 +1 @@
-versions
-suites
-
-# Files ignored by the test suite must be put here so changes are carried over to
-# the main repo
-!suites/common/index.js
+versions

node/testdata/suites/parallel/test-event-emitter-listener-count.js

@@ -0,0 +1,23 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const EventEmitter = require('events');
+
+const emitter = new EventEmitter();
+emitter.on('foo', () => {});
+emitter.on('foo', () => {});
+emitter.on('baz', () => {});
+// Allow any type
+emitter.on(123, () => {});
+
+assert.strictEqual(EventEmitter.listenerCount(emitter, 'foo'), 2);
+assert.strictEqual(emitter.listenerCount('foo'), 2);
+assert.strictEqual(emitter.listenerCount('bar'), 0);
+assert.strictEqual(emitter.listenerCount('baz'), 1);
+assert.strictEqual(emitter.listenerCount(123), 1);