ts-audio/src/__tests__/EventEmitter.test.ts

`ts-audio` is an agnostic and easy-to-use library to work with the `AudioContext` API and create Playlists.

import { EventEmitter } from '../EventEmitter'

describe('EventEmitter', () => {
  test('emit', () => {
    const emitter = new EventEmitter()
    const keyEvent = 'decoded'
    const callback = jest.fn()
    const param = { data: true }

    emitter.listener(keyEvent, callback)
    emitter.emit(keyEvent, { data: true })

    expect(callback).toBeCalledWith(param)
  })
})