suite('lunr.Pipeline', function () {  
  var tokenToToken = function(token) {
    return token
  }

  var tokenToTokenArray = function(token) {
    return [token, token]
  }

  var buildTokens = function(count) {
    return words.slice(0, count).map(function(word) { 
      return new lunr.Token(word) 
    })
  }

  lunr.Pipeline.registerFunction(tokenToToken, 'tokenToToken')
  lunr.Pipeline.registerFunction(tokenToTokenArray, 'tokenToTokenArray')

  var fewTokens = buildTokens(50);
  var manyTokens = buildTokens(1000)
  
  var tokenToTokenPipeline = new lunr.Pipeline
  tokenToTokenPipeline.add(tokenToToken)

  var tokenToTokenArrayPipeline = new lunr.Pipeline
  tokenToTokenArrayPipeline.add(tokenToTokenArray)

  this.add('few tokens, token -> token', function () {
    tokenToTokenPipeline.run(fewTokens)
  })

  this.add('many tokens, token -> token', function () {
    tokenToTokenPipeline.run(manyTokens)
  })

  this.add('few tokens, token -> token array', function () {
    tokenToTokenArrayPipeline.run(fewTokens)
  })

  this.add('many tokens, token -> token array', function () {
    tokenToTokenArrayPipeline.run(manyTokens)
  })
})