123 lines
2.6 KiB
JavaScript
123 lines
2.6 KiB
JavaScript
var test = require('tape')
|
|
var path = require('path')
|
|
var from = require('./')
|
|
var fs = require('fs')
|
|
|
|
var tmp = path.resolve(
|
|
__dirname, 'tmp.txt'
|
|
)
|
|
|
|
function fromString(string) {
|
|
return from(function(size, next) {
|
|
if (string.length <= 0) return next(null, null)
|
|
var chunk = string.slice(0, size)
|
|
string = string.slice(size)
|
|
next(null, chunk)
|
|
})
|
|
}
|
|
|
|
test('from2', function(t) {
|
|
var contents = fs.readFileSync(__filename, 'utf8')
|
|
var stream = fromString(contents)
|
|
|
|
stream
|
|
.pipe(fs.createWriteStream(tmp))
|
|
.on('close', function() {
|
|
t.equal(fs.readFileSync(tmp, 'utf8'), contents)
|
|
fs.unlinkSync(tmp)
|
|
t.end()
|
|
})
|
|
})
|
|
|
|
test('old mode', function(t) {
|
|
var contents = fs.readFileSync(__filename, 'utf8')
|
|
var stream = fromString(contents)
|
|
var buffer = ''
|
|
|
|
stream.on('data', function(data) {
|
|
buffer += data
|
|
}).on('end', function() {
|
|
t.equal(buffer, contents)
|
|
t.end()
|
|
})
|
|
})
|
|
|
|
test('destroy', function(t) {
|
|
var stream = from(function(size, next) {
|
|
process.nextTick(function() {
|
|
next(null, 'no')
|
|
})
|
|
})
|
|
|
|
stream.on('data', function(data) {
|
|
t.ok(false)
|
|
}).on('close', function() {
|
|
t.ok(true)
|
|
t.end()
|
|
})
|
|
|
|
stream.destroy()
|
|
})
|
|
|
|
test('arrays', function (t) {
|
|
var input = ['a', 'b', 'c']
|
|
var stream = from(input)
|
|
var output = []
|
|
stream.on('data', function (letter) {
|
|
output.push(letter.toString())
|
|
})
|
|
stream.on('end', function () {
|
|
t.deepEqual(input, output)
|
|
t.end()
|
|
})
|
|
})
|
|
|
|
test('obj arrays', function (t) {
|
|
var input = [{foo:'a'}, {foo:'b'}, {foo:'c'}]
|
|
var stream = from.obj(input)
|
|
var output = []
|
|
stream.on('data', function (letter) {
|
|
output.push(letter)
|
|
})
|
|
stream.on('end', function () {
|
|
t.deepEqual(input, output)
|
|
t.end()
|
|
})
|
|
})
|
|
|
|
|
|
test('arrays can emit errors', function (t) {
|
|
var input = ['a', 'b', new Error('ooops'), 'c']
|
|
var stream = from(input)
|
|
var output = []
|
|
stream.on('data', function (letter) {
|
|
output.push(letter.toString())
|
|
})
|
|
stream.on('error', function(e){
|
|
t.deepEqual(['a', 'b'], output)
|
|
t.equal('ooops', e.message)
|
|
t.end()
|
|
})
|
|
stream.on('end', function () {
|
|
t.fail('the stream should have errored')
|
|
})
|
|
})
|
|
|
|
test('obj arrays can emit errors', function (t) {
|
|
var input = [{foo:'a'}, {foo:'b'}, new Error('ooops'), {foo:'c'}]
|
|
var stream = from.obj(input)
|
|
var output = []
|
|
stream.on('data', function (letter) {
|
|
output.push(letter)
|
|
})
|
|
stream.on('error', function(e){
|
|
t.deepEqual([{foo:'a'}, {foo:'b'}], output)
|
|
t.equal('ooops', e.message)
|
|
t.end()
|
|
})
|
|
stream.on('end', function () {
|
|
t.fail('the stream should have errored')
|
|
})
|
|
})
|
|
|
|
|