All mongoose commands to teach

mongoose-cmds.js

const assert = require('assert');
const mongoose = require('mongoose');

// ES6 Promises
mongoose.Promise = global.Promise;

// Connect to mongodb
mongoose.connect('mongodb://localhost/testaroo');

mongoose.connection.once('open', function(){
    console.log('Connection has been made, now make fireworks...');
}).on('error', function(error){
    console.log('Connection error:', error);
});

const Schema = mongoose.Schema;

// Create a Schema and a Model

const MarioCharSchema = new Schema({
    name: String,
    weight: Number
});

const MarioChar = mongoose.model('mariochar', MarioCharSchema);

// Drop the characters collection before each test
beforeEach(function(done){
  // Drop the collection
  mongoose.connection.collections.mariochars.drop(function(){
      done();
  });

  const char = new MarioChar({
    name: 'Mario'
  });

  char.save().then(function(){
    assert(!char.isNew);
    done();
  });  
});

// Create tests
it('Finds a record from the database', function(done){
  MarioChar.findOne({name: 'Mario'}).then(function(result){
    assert(result.name === 'Mario');
    done();
  });
});

it('Finds a record by unique id', function(done){
  MarioChar.findOne({_id: char._id}).then(function(result){
    assert(result._id.toString() === char._id.toString());
    done();
  });
});

it('Deletes a record from the database', function(done){
  MarioChar.findOneAndRemove({name: 'Mario'}).then(function(){
    MarioChar.findOne({name: 'Mario'}).then(function(result){
      assert(result === null);
      done();
    });
  });
});

it('Updates the name of a record', function(done){
    MarioChar.findOneAndUpdate({name: 'Mario'}, {name: 'Luigi'}).then(function(){
        MarioChar.findOne({_id: char._id}).then(function(result){
            assert(result.name === 'Luigi');
            done();
        });
    });
});

it('Adds 1 to the weight of every record', function(done){
    MarioChar.update({}, { $inc: { weight: 1 } }).then(function(){
        MarioChar.findOne({name: 'Mario'}).then(function(record){
            assert(record.weight === 51);
            done();
        });
    });
 });



it('Creates an author with sub-documents', function(done){

        var pat = new Author({
            name: 'Patrick Rothfuss',
            books: [{title: 'Name of the Wind', pages: 400}]
        });

        pat.save().then(function(){
            Author.findOne({name: 'Patrick Rothfuss'}).then(function(record){
                assert(record.books.length === 1);
                done();
            });
        });

    });








const BookSchema = new Schema({
    title: String,
    pages: Number
});

const AuthorSchema = new Schema({
    name: String,
    books: [BookSchema]
});

const Author = mongoose.model('author', AuthorSchema);


it('Adds a book to an author', function(done){

    var pat = new Author({
        name: 'Patrick Rothfuss',
        books: [{title: 'Name of the Wind', pages: 400}]
    });

    pat.save().then(function(){
        Author.findOne({name: 'Patrick Rothfuss'}).then(function(record){
            // add a book to the books collection
            record.books.push({title: "Wise Man's Fear", pages: 500});
            record.save().then(function(){
                Author.findOne({name: 'Patrick Rothfuss'}).then(function(record){
                    assert(record.books.length === 2);
                    done();
                });
            });
        });
    });

});