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'use strict';
/** * Test dependencies. */
const start = require('./common');
const assert = require('assert');
const mongoose = start.mongoose;const Schema = mongoose.Schema;const DocumentObjectId = mongoose.Types.ObjectId;
/** * Setup */
const schema = new Schema({  title: { type: String }});
describe('model', function() {  describe('create()', function() {    let db;    let B;
    before(function() {      db = start();      B = db.model('Test', schema);    });
    after(async function() {      await db.close();    });
    it('accepts an array and returns an array', async function() {      const posts = await B.create([{ title: 'hi' }, { title: 'bye' }]);
      assert.ok(posts instanceof Array);      assert.equal(posts.length, 2);      const post1 = posts[0];      const post2 = posts[1];      assert.ok(post1.get('_id') instanceof DocumentObjectId);      assert.equal(post1.title, 'hi');
      assert.ok(post2.get('_id') instanceof DocumentObjectId);      assert.equal(post2.title, 'bye');    });
    it('fires callback when passed 0 docs', function(done) {      B.create(function(err, a) {        assert.ifError(err);        assert.ok(!a);        done();      });    });
    it('fires callback when empty array passed', function(done) {      B.create([], function(err, a) {        assert.ifError(err);        assert.deepEqual(a, []);        done();      });    });
    it('supports passing options', async function() {      const docs = await B.create([{}], { validateBeforeSave: false });
      assert.ok(Array.isArray(docs));      assert.equal(docs.length, 1);    });
    it('returns a promise', function() {      const p = B.create({ title: 'returns promise' });      assert.ok(p instanceof mongoose.Promise);    });
    it('creates in parallel', async function() {      let countPre = 0;      let countPost = 0;
      const SchemaWithPreSaveHook = new Schema({        preference: String      });
      let startTime, endTime;      SchemaWithPreSaveHook.pre('save', true, function hook(next, done) {        setTimeout(function() {          countPre++;          if (countPre === 1) startTime = Date.now();          else if (countPre === 4) endTime = Date.now();          next();          done();        }, 100);      });      SchemaWithPreSaveHook.post('save', function() {        countPost++;      });
      db.deleteModel(/Test/);      const MWPSH = db.model('Test', SchemaWithPreSaveHook);      const docs = await MWPSH.create([        { preference: 'xx' },        { preference: 'yy' },        { preference: '1' },        { preference: '2' }      ]);
      assert.ok(docs instanceof Array);      assert.equal(docs.length, 4);
      const [doc1, doc2, doc3, doc4] = docs;
      assert.ok(doc1);      assert.ok(doc2);      assert.ok(doc3);      assert.ok(doc4);      assert.equal(countPre, 4);      assert.equal(countPost, 4);      assert.ok(endTime - startTime < 4 * 100); // serial: >= 4 * 100 parallel: < 4 * 100    });
    describe('callback is optional', function() {      it('with one doc', async function() {        const doc = await B.create({ title: 'optional callback' });
        assert.equal(doc.title, 'optional callback');      });
      it('with more than one doc', async function() {        const docs = await B.create({ title: 'optional callback 2' }, { title: 'orient expressions' });
        assert.equal(docs.length, 2);        const doc1 = docs[0];        const doc2 = docs[1];        assert.equal(doc1.title, 'optional callback 2');        assert.equal(doc2.title, 'orient expressions');      });
      it('with array of docs', async function() {        const docs = await B.create([{ title: 'optional callback3' }, { title: '3' }]);
        assert.ok(docs instanceof Array);        assert.equal(docs.length, 2);        const doc1 = docs[0];        const doc2 = docs[1];        assert.equal(doc1.title, 'optional callback3');        assert.equal(doc2.title, '3');      });
      it('and should reject promise on error', async function() {        const p = B.create({ title: 'optional callback 4' });        const doc = await p;
        const err = await B.create({ _id: doc._id }).then(() => null, err => err);        assert(err);      });
      it('if callback is falsy, will ignore it (gh-5061)', async function() {        const doc = await B.create({ title: 'test' }, null);
        assert.equal(doc.title, 'test');      });
      it('when passed an empty array, returns an empty array', async function() {        const userSchema = new Schema({ name: String });        const User = db.model('User', userSchema);
        const users = await User.create([]);        assert.deepEqual(users, []);      });
      it('treats undefined first arg as doc rather than callback (gh-9765)', function() {        return B.create(void 0).          then(function(doc) {            assert.ok(doc);            assert.ok(doc._id);          });      });    });  });});