var JSONStream = require('../')
  
  var data = [
    {ID: 1, optional: null},
    {ID: 2, optional: null},
    {ID: 3, optional: 20},
    {ID: 4, optional: null},
    {ID: 5, optional: 'hello'},
    {ID: 6, optional: null}
  ]
  
  
  var test = require('tape')
  
  test ('null properties', function (t) {
    var actual = []
    var stream = 
  
    JSONStream.parse('*.optional')
      .on('data', function (v) { actual.push(v) })
      .on('end', function () {
        t.deepEqual(actual, [20, 'hello'])
        t.end()
      })
  
    stream.write(JSON.stringify(data, null, 2))
    stream.end()
  })