106 lines
2.2 KiB
JavaScript
106 lines
2.2 KiB
JavaScript
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var test = require('tape')
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var via = require('../')
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var bufferEquals = require('buffer-equal')
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test('via(func) - utf8', function (t) {
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var stream = via(function (data) {
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return data + 'yeah?'
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})
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stream.on('readable', function () {
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var chunk = this.read()
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if (chunk) {
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t.strictEqual(chunk, 'cliveyeah?')
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t.end()
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}
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})
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stream.setEncoding('utf8')
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stream.end('clive')
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})
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test('via.async(func) - utf8', function (t) {
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var stream = via.async(function (data, enc, done) {
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process.nextTick(function () {
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done(null, data + 'yeah?')
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})
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})
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stream.on('readable', function () {
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var chunk = this.read()
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if (chunk) {
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t.strictEqual(chunk, 'cliveyeah?')
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t.end()
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}
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})
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stream.setEncoding('utf8')
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stream.end('clive')
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})
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test('via(func) - buffer', function (t) {
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var stream = via(function (data) {
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return Buffer.concat([ data, Buffer([ 2 ]) ])
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})
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stream.on('readable', function () {
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var chunk = this.read()
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if (chunk) {
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t.ok(bufferEquals(chunk, Buffer([ 1, 2 ])))
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t.end()
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}
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})
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stream.end(Buffer([ 1 ]))
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})
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test('through function throws, via emits exception', function (t) {
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t.plan(1)
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var stream = via(function () {
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throw new Error('test')
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})
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stream.on('error', function (err) {
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t.strictEqual(err.message, 'test')
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})
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stream.end('data')
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})
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test('async through function returns err, via emits exception', function (t) {
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t.plan(1)
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var stream = via.async(function (chunk, enc, done) {
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done(new Error('test'))
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})
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stream.on('error', function (err) {
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t.strictEqual(err.message, 'test')
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})
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stream.end('data')
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})
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test('via: objectMode', function (t) {
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t.plan(1)
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var stream = via(function (object) {
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object.received = true
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return object
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}, { objectMode: true })
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stream.on('readable', function () {
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var chunk = this.read()
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if (chunk) {
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t.deepEquals(chunk, { received: true })
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}
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})
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stream.end({})
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})
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test('via: readableObjectMode', function (t) {
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var stream = via(
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function (buf) {
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t.strictEqual(buf.toString(), 'yeah')
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return {}
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},
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{ readableObjectMode: true }
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)
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stream.end('yeah')
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t.end()
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})
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