text: /* Copyright (c) 2012-2016 LevelUP contributors
   * See list at <https://github.com/level/levelup#contributing>
   * MIT License <https://github.com/level/levelup/blob/master/LICENSE.md>
   */
  
  var levelup = require('../lib/levelup.js')
    , errors  = levelup.errors
    , common  = require('./common')
  
    , assert  = require('referee').assert
    , refute  = require('referee').refute
    , buster  = require('bustermove')
  
  buster.testCase('null & undefined keys & values', {
      'setUp': common.commonSetUp
    , 'tearDown': common.commonTearDown
  
    , 'null and undefined': {
          'setUp': function (done) {
            levelup(this.cleanupDirs[0] = common.nextLocation(), { createIfMissing: true }, function (err, db) {
              refute(err) // sanity
              this.closeableDatabases.push(db)
              assert.isTrue(db.isOpen())
              this.db = db
              done()
            }.bind(this))
          }
  
        , 'get() with null key causes error': function (done) {
            this.db.get(null, function (err, value) {
              refute(value)
              assert.isInstanceOf(err, Error)
              assert.isInstanceOf(err, errors.LevelUPError)
              done()
            })
          }
  
        , 'get() with undefined key causes error': function (done) {
            this.db.get(undefined, function (err, value) {
              refute(value)
              assert.isInstanceOf(err, Error)
              assert.isInstanceOf(err, errors.LevelUPError)
              done()
            })
          }
  
        , 'del() with null key causes error': function (done) {
            this.db.del(null, function (err, value) {
              refute(value)
              assert.isInstanceOf(err, Error)
              assert.isInstanceOf(err, errors.LevelUPError)
              done()
            })
          }
  
        , 'del() with undefined key causes error': function (done) {
            this.db.del(undefined, function (err, value) {
              refute(value)
              assert.isInstanceOf(err, Error)
              assert.isInstanceOf(err, errors.LevelUPError)
              done()
            })
          }
  
        , 'put() with null key causes error': function (done) {
            this.db.put(null, 'foo', function (err, value) {
              refute(value)
              assert.isInstanceOf(err, Error)
              assert.isInstanceOf(err, errors.LevelUPError)
              done()
            })
          }
  
        , 'put() with undefined key causes error': function (done) {
            this.db.put(undefined, 'foo', function (err, value) {
              refute(value)
              assert.isInstanceOf(err, Error)
              assert.isInstanceOf(err, errors.LevelUPError)
              done()
            })
          }
  
        , 'put() with null value works': function (done) {
            this.db.put('foo', null, function (err, value) {
              refute(err)
              done()
            })
          }
  
        , 'put() with undefined value works': function (done) {
            this.db.put('foo', undefined, function (err, value) {
              refute(err)
              done()
            })
          }
        , 'batch() with undefined value works': function (done) {
            this.db.batch([{key: 'foo', value: undefined, type: 'put'}]
            , function (err) {
              refute(err)
              done()
            })
          }
        , 'batch() with null value works': function (done) {
            this.db.batch([{key: 'foo', value: null, type: 'put'}]
            , function (err) {
              refute(err)
              done()
            })
          }
        , 'batch() with undefined key causes error': function (done) {
            this.db.batch([{key: undefined, value: 'bar', type: 'put'}]
            , function (err) {
              assert.isInstanceOf(err, Error)
              assert.isInstanceOf(err, errors.LevelUPError)
              done()
            })
          }
        , 'batch() with null key causes error': function (done) {
            this.db.batch([{key: null, value: 'bar', type: 'put'}]
            , function (err) {
              assert.isInstanceOf(err, Error)
              assert.isInstanceOf(err, errors.LevelUPError)
              done()
            })
          }
      }
  })
  