lux-framework/src/utils/test/insert.test.js

Build scalable, Node.js-powered REST APIs with almost no code.

// @flow
import { expect } from 'chai';
import { it, describe } from 'mocha';

import insert from '../insert';

describe('util insert()', () => {
  it('inserts elements into an `Array` in place', () => {
    const subject = new Array(3);

    insert(subject, [1, 2, 3]);

    expect(subject).to.deep.equal([1, 2, 3]);
  });

  it('returns the destination `Array`', () => {
    const subject = new Array(3);

    expect(insert(subject, [1, 2, 3])).to.equal(subject);
  });
});