connect.asynct.js
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var es = require('../')
, it = require('it-is').style('colour')
, d = require('ubelt')
function makeExamplePipe() {
return es.connect(
es.map(function (data, callback) {
callback(null, data * 2)
}),
es.map(function (data, callback) {
d.delay(callback)(null, data)
}),
es.map(function (data, callback) {
callback(null, data + 2)
}))
}
exports['simple pipe'] = function (test) {
var pipe = makeExamplePipe()
pipe.on('data', function (data) {
it(data).equal(18)
test.done()
})
pipe.write(8)
}
exports['read array then map'] = function (test) {
var readThis = d.map(3, 6, 100, d.id) //array of multiples of 3 < 100
, first = es.readArray(readThis)
, read = []
, pipe =
es.connect(
first,
es.map(function (data, callback) {
callback(null, {data: data})
}),
es.map(function (data, callback) {
callback(null, {data: data})
}),
es.writeArray(function (err, array) {
it(array).deepEqual(d.map(readThis, function (data) {
return {data: {data: data}}
}))
test.done()
})
)
}
exports ['connect returns a stream'] = function (test) {
var rw =
es.connect(
es.map(function (data, callback) {
callback(null, data * 2)
}),
es.map(function (data, callback) {
callback(null, data * 5)
})
)
it(rw).has({readable: true, writable: true})
var array = [190, 24, 6, 7, 40, 57, 4, 6]
, _array = []
, c =
es.connect(
es.readArray(array),
rw,
es.log('after rw:'),
es.writeArray(function (err, _array) {
it(_array).deepEqual(array.map(function (e) { return e * 10 }))
test.done()
})
)
}
require('./helper')(module)