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denoland-deno/tests/node_compat/test/parallel/test-event-emitter-symbols.js
Asher Gomez 29085895c9
chore: move tools/node_compat to tests/node_compat/runner (#23025)
The `tools/node_compat/node` submodule has been moved to
`tests/node_compat/runner/suite` and the remaining files within
`tools/node_compat` to `tests/node_compat/runner`.

Most of the changes are of the header within `tests/node_compat/test`
files. The `setup` and `test` tasks within `tests/node_comapt` execute
successfully.

Towards #22525
CC @mmastrac
2024-04-03 09:24:55 +11:00

30 lines
816 B
JavaScript

// 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 `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
'use strict';
const common = require('../common');
const EventEmitter = require('events');
const assert = require('assert');
const ee = new EventEmitter();
const foo = Symbol('foo');
const listener = common.mustCall();
ee.on(foo, listener);
assert.deepStrictEqual(ee.listeners(foo), [listener]);
ee.emit(foo);
ee.removeAllListeners();
assert.deepStrictEqual(ee.listeners(foo), []);
ee.on(foo, listener);
assert.deepStrictEqual(ee.listeners(foo), [listener]);
ee.removeListener(foo, listener);
assert.deepStrictEqual(ee.listeners(foo), []);