/**

* @jest-environment jsdom

*/

import { W } from '../src/constants';

import { convertToKB, pushTask } from '../src/utils';

describe('utils', () => {

let spy: jest.SpyInstance;

describe('.convertToKB()', () => {

it('should convert number to Kilo Bytes', () => {

expect(convertToKB(100000000)).toEqual(95.3674);

});

it('should return null when input is not a number', () => {

// @ts-ignore

expect(convertToKB('100000000')).toEqual(null);

});

});

describe('.pushTask()', () => {

it('should call cb() if requestIdleCallback is undefined', () => {

spy = jest.fn();

pushTask(spy);

expect(spy.mock.calls.length).toEqual(1);

});

it('should call requestIdleCallback if is defined', () => {

spy = jest.fn();

(W as any).requestIdleCallback = spy;

pushTask(() => {});

expect(spy.mock.calls.length).toEqual(1);

});

});

});