text: const test = require('tape')
  const nlp = require('./_lib')
  
  test('sentences.toPositive', function(t) {
    let doc = nlp(`okay, do not use reverse psychology.`)
    doc
      .sentences()
      .toPositive()
      .toPositive()
      .toPositive()
      .toPositive()
    t.equal(doc.text(), 'okay, use reverse psychology.')
  
    // doc.sentences().toNegative()
    // t.equal(doc.text(), 'okay, do not use reverse psychology.')
  
    t.end()
  })
  