Nsryjdtyk

Mongoose return a empty array when i am trying to use find() function.Can any one help me with this please?

users.js

const mongoose = require('mongoose');

const Schema = mongoose.Schema;    

mongoose.Promise = global.Promise;



const userSchema = new Schema({

    name: String    

});

const user = mongoose.model('user', userSchema, 'users');    

module.exports = user;

test_helper.js

   const mongoose = require('mongoose');



    mongoose.connect('mongodb://localhost/user_test');



    before((done)=>{

        mongoose.connection.once('open',()=>{

            console.log('Connected');

        }).on('error', ()=>{

            console.log('Error');

        });

        done();

    });



    beforeEach((done)=>{

        mongoose.connection

                .collections

                .users

                .drop(()=>{

            done();

        });

     });

create_user.js

const assert = require('assert');

const User = require('../src/user');





describe('Create a user',()=>{

    it('it should create a new user',(done)=>{

        let joe = new User({

            name : "Joe"

        });

        joe.save().then(()=>{

            assert(!joe.isNew);

            done();

        });

    });

})

reading-users.js

const assert = require('assert');

const User = require('../src/user');





describe('This will read all users', () => {

    before((done) => {

        joe = new User({name:'joe'});

        joe.save().then(() => done());

    });

    it('It Should find all users named joe', (done) => {

        User.findOne({name:"Joe"})

            .then((foo)=>{

                //assert(users[0]._id.toString()===joe._id.toString());

                console.log(foo);

                console.log(joe);

                done();

        });

    });

});

=============================log==========================================

(node:3324) DeprecationWarning: current URL string parser is
deprecated, and will be removed in a future version. To use the new
parser, pass option { useNewUrlParser: true } to MongoClient.connect.
Create a user Connected
√ it should create a new user (274ms)

This will read all users
{ _id: 5bfa98eb6bd05d0cfc5d639d, name:
'joe', __v: 0 }
√ It Should find all users named joe

2 passing (1s)

The root cause for this problem is that every time you start your test, created records will always removed before your test get started. This is occurring inside the beforeEach block in your test_helper.js file. try to replacebeforeEach with afterEach.

afterEach((done)=>{

    mongoose.connection.collections.users.drop(()=>{

        done();

    });

});