-
Notifications
You must be signed in to change notification settings - Fork 28.2k
/
test-events-static-geteventlisteners.js
38 lines (34 loc) · 1.17 KB
/
test-events-static-geteventlisteners.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
// Flags: --expose-internals
'use strict';
const common = require('../common');
const {
deepStrictEqual,
} = require('assert');
const { getEventListeners, EventEmitter } = require('events');
const { EventTarget } = require('internal/event_target');
// Test getEventListeners on EventEmitter
{
const fn1 = common.mustNotCall();
const fn2 = common.mustNotCall();
const emitter = new EventEmitter();
emitter.on('foo', fn1);
emitter.on('foo', fn2);
emitter.on('baz', fn1);
emitter.on('baz', fn1);
deepStrictEqual(getEventListeners(emitter, 'foo'), [fn1, fn2]);
deepStrictEqual(getEventListeners(emitter, 'bar'), []);
deepStrictEqual(getEventListeners(emitter, 'baz'), [fn1, fn1]);
}
// Test getEventListeners on EventTarget
{
const fn1 = common.mustNotCall();
const fn2 = common.mustNotCall();
const target = new EventTarget();
target.addEventListener('foo', fn1);
target.addEventListener('foo', fn2);
target.addEventListener('baz', fn1);
target.addEventListener('baz', fn1);
deepStrictEqual(getEventListeners(target, 'foo'), [fn1, fn2]);
deepStrictEqual(getEventListeners(target, 'bar'), []);
deepStrictEqual(getEventListeners(target, 'baz'), [fn1]);
}