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'use strict';
const Schema = require('../../lib/schema');const applyTimestampsToChildren = require('../../lib/helpers/update/applyTimestampsToChildren');const assert = require('assert');
describe('applyTimestampsToChildren', function() {  it('applies timestamps to nested subdocs within a $push (gh-11775)', function() {    const update = {      $push: {        l1: {          l2: {            prop: 'test'          }        }      }    };    const now = new Date('2016-01-01');    const schema = new Schema({      l1: [new Schema({ l2: new Schema({ prop: String }, { timestamps: true }) }, { timestamps: true })]    });    applyTimestampsToChildren(now, update, schema);
    assert.equal(update.$push.l1.l2.createdAt.valueOf(), now.valueOf());    assert.equal(update.$push.l1.l2.updatedAt.valueOf(), now.valueOf());  });});