www.aleph1.co.uk Git - yaffs-website/blob - node_modules/linerstream/test/split-test.js

   1 var sinon = require('sinon')
   2 var fs = require('fs')
   3 var path = require('path')
   4 var os = require('os')
   5 var expect = require('chai').expect
   6 var Linerstream = require('../')
   7
   8 describe('Split test', function() {
   9   describe('given text with line breaks', function() {
  10     it('should split on new lines', function(done) {
  11       var fixturePath = path.join(__dirname, 'data/newlines-big.txt')
  12       var inputStream = fs.createReadStream(fixturePath)
  13       var splitter = new Linerstream()
  14       expect(splitter).to.exist
  15       var output = inputStream.pipe(splitter)
  16       var validateLineSpy = sinon.spy(validateLine)
  17
  18       output.on('finish', finishHandler)
  19       output.on('readable', readableHandler)
  20
  21       function validateLine(line) {
  22         expect(line).to.exist
  23         expect(line).to.be.a('string')
  24         expect(line).to.not.be.empty
  25         expect(line).to.not.match(/\n|\r/)
  26       }
  27
  28       function readableHandler() {
  29         var data
  30         while (true) {
  31           data = output.read()
  32           if (!data) {
  33             break
  34           }
  35           validateLineSpy(data)
  36
  37         }
  38       }
  39
  40       function finishHandler() {
  41         expect(validateLineSpy.callCount).to.be.above(1)
  42         done()
  43       }
  44
  45     })
  46   })
  47 })