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'use strict';
/** * Module dependencies. */
const assert = require('assert');const start = require('../common');
const mongoose = start.mongoose;
describe('asyncIterator', function() {  let db;  let Movie;
  before(async function() {    db = await start();
    const schema = new mongoose.Schema({ name: String });    await db.dropCollection('Movie').catch(() => {});    db.deleteModel(/Movie/);    Movie = db.model('Movie', schema);
    await Movie.create([      { name: 'Kickboxer' },      { name: 'Ip Man' },      { name: 'Enter the Dragon' }    ]);  });
  after(async function() {    await db.close();  });
  function wait() {    return new Promise(resolve => setTimeout(resolve, 0));  }
  it('supports for/await/of on a query (gh-6737)', async function() {    let names = [];    for await (const doc of Movie.find().sort({ name: 1 })) {      await wait();      names.push(doc.name);    }
    assert.deepEqual(names, ['Enter the Dragon', 'Ip Man', 'Kickboxer']);  });
  it('supports for/await/of on a aggregation (gh-6737)', async function() {    let names = [];    for await (const doc of Movie.aggregate([{ $sort: { name: -1 } }])) {      await wait();      names.push(doc.name);    }
    assert.deepEqual(names, ['Kickboxer', 'Ip Man', 'Enter the Dragon']);  });
  it('supports for/await/of on a query cursor (gh-9403)', async function() {    let names = [];    const cursor = Movie.find().sort({ name: -1 }).cursor();    for await (const doc of cursor) {      await wait();      names.push(doc.name);    }
    assert.deepEqual(names, ['Kickboxer', 'Ip Man', 'Enter the Dragon']);  });
  it('supports for/await/of on a aggregation cursor (gh-9403)', async function() {    let names = [];    const cursor = Movie.aggregate([{ $sort: { name: -1 } }]).cursor();    for await (const doc of cursor) {      await wait();      names.push(doc.name);    }
    assert.deepEqual(names, ['Kickboxer', 'Ip Man', 'Enter the Dragon']);  });});