split.asynct.js
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var es = require('event-stream')
, it = require('it-is').style('colour')
, d = require('ubelt')
, split = require('..')
, join = require('path').join
, fs = require('fs')
, Stream = require('stream').Stream
, Readable = require('stream').Readable
, spec = require('stream-spec')
, through = require('through')
, stringStream = require('string-to-stream')
exports ['split() works like String#split'] = function (test) {
var readme = join(__filename)
, expected = fs.readFileSync(readme, 'utf-8').split('\n')
, cs = split()
, actual = []
, ended = false
, x = spec(cs).through()
var a = new Stream ()
a.write = function (l) {
actual.push(l.trim())
}
a.end = function () {
ended = true
expected.forEach(function (v,k) {
//String.split will append an empty string ''
//if the string ends in a split pattern.
//es.split doesn't which was breaking this test.
//clearly, appending the empty string is correct.
//tests are passing though. which is the current job.
if(v)
it(actual[k]).like(v)
})
//give the stream time to close
process.nextTick(function () {
test.done()
x.validate()
})
}
a.writable = true
fs.createReadStream(readme, {flags: 'r'}).pipe(cs)
cs.pipe(a)
}
exports ['split() takes mapper function'] = function (test) {
var readme = join(__filename)
, expected = fs.readFileSync(readme, 'utf-8').split('\n')
, cs = split(function (line) { return line.toUpperCase() })
, actual = []
, ended = false
, x = spec(cs).through()
var a = new Stream ()
a.write = function (l) {
actual.push(l.trim())
}
a.end = function () {
ended = true
expected.forEach(function (v,k) {
//String.split will append an empty string ''
//if the string ends in a split pattern.
//es.split doesn't which was breaking this test.
//clearly, appending the empty string is correct.
//tests are passing though. which is the current job.
if(v)
it(actual[k]).equal(v.trim().toUpperCase())
})
//give the stream time to close
process.nextTick(function () {
test.done()
x.validate()
})
}
a.writable = true
fs.createReadStream(readme, {flags: 'r'}).pipe(cs)
cs.pipe(a)
}
exports ['split() works with empty string chunks'] = function (test) {
var str = ' foo'
, expected = str.split(/[\s]*/).reduce(splitBy(/[\s]*/), [])
, cs1 = split(/[\s]*/)
, cs2 = split(/[\s]*/)
, actual = []
, ended = false
, x = spec(cs1).through()
, y = spec(cs2).through()
var a = new Stream ()
a.write = function (l) {
actual.push(l.trim())
}
a.end = function () {
ended = true
expected.forEach(function (v,k) {
//String.split will append an empty string ''
//if the string ends in a split pattern.
//es.split doesn't which was breaking this test.
//clearly, appending the empty string is correct.
//tests are passing though. which is the current job.
if(v)
it(actual[k]).like(v)
})
//give the stream time to close
process.nextTick(function () {
test.done()
x.validate()
y.validate()
})
}
a.writable = true
cs1.pipe(cs2)
cs2.pipe(a)
cs1.write(str)
cs1.end()
}
function splitBy (delimeter) {
return function (arr, piece) {
return arr.concat(piece.split(delimeter))
}
}