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tests.js
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tests.js
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/**
* Created by Ivan on 16-Apr-17.
*/
"use strict";
const assert = require('assert');
const EventEmitter = require('./');
const events = new EventEmitter();
const [extend, inherit] = [{}, {}];
// extend test
assert.equal(
Object.getPrototypeOf(EventEmitter.extend(extend)),
Object.prototype,
'Prototype should stay the same (Array.prototype)'
);
// inherit test
assert.equal(
Object.getPrototypeOf(EventEmitter.inherit(inherit)),
EventEmitter.prototype,
'Prototype should be EventEmitter prototype'
);
const ctx = { ctx : true };
events
.once(
'event1',
(...args) => console.log('once1', ...args),
(...args) => console.log('once2', ...args)
)
.on('event1',
function () {
assert.deepEqual(this, ctx, 'Context test error');
},
() => assert.deepEqual(this, {}, 'Context test error')
)
.emit('event1', ctx, 1, 2, 3);
assert.equal(events._events.get('event1').length, 2, 'Once test error');
const fn = (...args) => assert.deepEqual(args, [1, 2, 3], 'Args test error');
events
.on('event2', fn)
.emit('event2', null, 1, 2, 3)
.off('event2', fn);
assert.equal(events._events.get('event2'), undefined, 'Off test error');
events
.on('event2', fn)
.offAll();
assert.deepEqual(events._events, new Map(), 'OffAll test error');
let counter = 0;
events
.times('event', 3, () => counter += 1)
.emit('event')
.emit('event')
.emit('event');
assert.equal(counter, 3, 'Times test error');