redeyed-smoke.js #1

'use strict';
/*jshint asi: true*/

// applying redeyed to a bunch of files of contained libraries as a smoke test
var test     =  require('tap').test
  , path     =  require('path')
  , fs       =  require('fs')
  , readdirp =  require('readdirp')
  , redeyed  =  require('..')
  , esprima  =  require('esprima')
  , node_modules =  path.join(__dirname, '..', 'node_modules')
  , tapdir       =  path.join(node_modules, 'tap')
  , esprimadir   =  path.join(node_modules, 'esprima')

test('tap', function (t) {
  var invalidTapFiles = [
    , 'slide/lib/async-map-ordered.js'
  ]

  function shouldProcess (path) {
      var include = true

      invalidTapFiles.every(function (entry) {
          return include =  (path.indexOf(entry) < 0)
      });

      return include
  }

  function containsVarKeyword(code) {
      code = code.replace(/^#!([^\r\n]+)/, function(match, captured) { return "//" + captured; });
      return esprima.tokenize(code).some(function (t) {
          return t.type === 'Keyword' && t.value === 'var'
      })
  }

  readdirp({ root: tapdir, fileFilter: '*.js' })
    .on('data', function (entry) {
      var code = fs.readFileSync(entry.fullPath, 'utf-8')

      if (!shouldProcess(entry.fullPath) || !containsVarKeyword(code)) return

      var resultAst = redeyed(code, { Keyword: { 'var': '+:-' } }, { buildAst: true }).code
        , resultTokenize = redeyed(code, { Keyword: { 'var': '+:-' } }, { buildAst: false }).code

      t.assert(~resultAst.indexOf('+var-') || !(~resultAst.indexOf('var ')), 'redeyed ' + entry.path)
      t.assert(~resultTokenize.indexOf('+var-') || !(~resultTokenize.indexOf('var ')), 'redeyed ' + entry.path)
    })
    .on('end', t.end.bind(t))
})

test('esprima', function (t) {

  readdirp({ root: esprimadir, fileFilter: '*.js' })
    .on('data', function (entry) {

      var code = fs.readFileSync(entry.fullPath, 'utf-8')
        , resultAst = redeyed(code, { Keyword: { 'var': '+:-' } }, { buildAst: true }).code
        , resultTokenize = redeyed(code, { Keyword: { 'var': '+:-' } }, { buildAst: false }).code

      t.assert(~resultAst.indexOf('+var-') || !(~resultAst.indexOf('var ')), 'redeyed ' + entry.path)
      t.assert(~resultTokenize.indexOf('+var-') || !(~resultTokenize.indexOf('var ')), 'redeyed ' + entry.path)
    })
    .on('end', t.end.bind(t))
})

test('redeyed', function (t) {

  readdirp({ root: path.join(__dirname, '..'), fileFilter: '*.js', directoryFilter: ['!.git', '!node_modules' ] })
    .on('data', function (entry) {

      var code = fs.readFileSync(entry.fullPath, 'utf-8')
        , result = redeyed(code, { Keyword: { 'var': '+:-' } }).code

        t.assert(~result.indexOf('+var-') || !(~result.indexOf('var ')), 'redeyed ' + entry.path)
    })
    .on('end', t.end.bind(t))
})