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