Cradle - Response value variations

package.json

{
  "dependencies": {
    "async": "~0.1.22",
    "cradle": "~0.6.4",
    "colors": "~0.6.0-1"
  }
}

test.js

require('colors');

var async  = require('async')
var cradle = require('cradle')
var db     = (new cradle.Connection).database('cradle-test')

var q = []

q.push(function(done){ db.create(done) })

q.push(function(res, done){
  console.log('Test database created')
  done()
})

q.push(function(done){
  db.save('exists', {'ingredient': 'potatoes'}, function(err, res){ done(err) })
})

q.push(function(done){
  db.save('_design/food', {
    'views': {
      'by_ingredient': {
        'map': 'function(doc){ emit(doc.ingredient, doc) }'
      }
    }
  }, function(err, res){ done(err) })
})

q.push(function(done){
  console.log('With a single key'.green)
  db.get('exists', function(err, res){
    console.log({err: err, res: res})
    done()
  })
})

q.push(function(done){
  console.log('With a nonexistent single key'.green)
  db.get('doesnotexist', function(err, res){
    console.log({err: err, res: res})
    done()
  })
})

q.push(function(done){
  console.log('With multiple nonexistent keys'.green)
  db.get(['doesnotexist', 'doesnotexisteither'], function(err, res){
    console.log({err: err, res: res})
    done()
  })
})

q.push(function(done){
  console.log('With multiple keys, one nonexistent'.green)
  db.get(['doesnotexist', 'exists'], function(err, res){
    console.log({err: err, res: res})
    done()
  })
})

q.push(function(done){
  console.log('View with single key'.green)
  db.view('food/by_ingredient', {key: 'exists'}, function(err, res){
    console.log({err: err, res: res})
    done()
  })
})

q.push(function(done){
  console.log('View with single nonexistent key'.green)
  db.view('food/by_ingredient', {key: 'doesnotexist'}, function(err, res){
    console.log({err: err, res: res})
    done()
  })
})

q.push(function(done){
  console.log('View with multiple nonexistent keys'.green)
  db.view('food/by_ingredient', {keys: ['doesnotexist', 'doesnotexisteither']}, function(err, res){
    console.log({err: err, res: res})
    done()
  })
})

q.push(function(done){
  console.log('View with multiple keys, one nonexistent'.green)
  db.view('food/by_ingredient', {keys: ['potatoes', 'doesnotexist']}, function(err, res){
    console.log({err: err, res: res})
    done()
  })
})

q.push(function(done){
  db.destroy(done)
})

q.push(function(res, done){
  console.log('Test database deleted')
  done()
})

async.waterfall(q, function(err){
  if (err) console.error(err)
  console.log('Done')
})

Output