var tape = require('tape')
var through = require('through2')
var pumpify = require('./')
var stream = require('stream')
var duplexify = require('duplexify')
tape('basic', function(t) {
t.plan(3)
var pipeline = pumpify(
through(function(data, enc, cb) {
t.same(data.toString(), 'hello')
cb(null, data.toString().toUpperCase())
}),
through(function(data, enc, cb) {
t.same(data.toString(), 'HELLO')
cb(null, data.toString().toLowerCase())
})
)
pipeline.write('hello')
pipeline.on('data', function(data) {
t.same(data.toString(), 'hello')
t.end()
})
})
tape('3 times', function(t) {
t.plan(4)
var pipeline = pumpify(
through(function(data, enc, cb) {
t.same(data.toString(), 'hello')
cb(null, data.toString().toUpperCase())
}),
through(function(data, enc, cb) {
t.same(data.toString(), 'HELLO')
cb(null, data.toString().toLowerCase())
}),
through(function(data, enc, cb) {
t.same(data.toString(), 'hello')
cb(null, data.toString().toUpperCase())
})
)
pipeline.write('hello')
pipeline.on('data', function(data) {
t.same(data.toString(), 'HELLO')
t.end()
})
})
tape('destroy', function(t) {
var test = through()
test.destroy = function() {
t.ok(true)
t.end()
}
var pipeline = pumpify(through(), test)
pipeline.destroy()
})
tape('close', function(t) {
var test = through()
var pipeline = pumpify(through(), test)
pipeline.on('error', function(err) {
t.same(err.message, 'lol')
t.end()
})
test.emit('error', new Error('lol'))
})
tape('end waits for last one', function(t) {
var ran = false
var a = through()
var b = through()
var c = through(function(data, enc, cb) {
setTimeout(function() {
ran = true
cb()
}, 100)
})
var pipeline = pumpify(a, b, c)
pipeline.write('foo')
pipeline.end(function() {
t.ok(ran)
t.end()
})
t.ok(!ran)
})
tape('always wait for finish', function(t) {
var a = new stream.Readable()
a._read = function() {}
a.push('hello')
var pipeline = pumpify(a, through(), through())
var ran = false
pipeline.on('finish', function() {
t.ok(ran)
t.end()
})
setTimeout(function() {
ran = true
a.push(null)
}, 100)
})
tape('async', function(t) {
var pipeline = pumpify()
t.plan(4)
pipeline.write('hello')
pipeline.on('data', function(data) {
t.same(data.toString(), 'HELLO')
t.end()
})
setTimeout(function() {
pipeline.setPipeline(
through(function(data, enc, cb) {
t.same(data.toString(), 'hello')
cb(null, data.toString().toUpperCase())
}),
through(function(data, enc, cb) {
t.same(data.toString(), 'HELLO')
cb(null, data.toString().toLowerCase())
}),
through(function(data, enc, cb) {
t.same(data.toString(), 'hello')
cb(null, data.toString().toUpperCase())
})
)
}, 100)
})
tape('early destroy', function(t) {
var a = through()
var b = through()
var c = through()
b.destroy = function() {
t.ok(true)
t.end()
}
var pipeline = pumpify()
pipeline.destroy()
setTimeout(function() {
pipeline.setPipeline(a, b, c)
}, 100)
})
tape('preserves error', function (t) {
var a = through()
var b = through(function (data, enc, cb) {
cb(new Error('stop'))
})
var c = through()
var s = pumpify()
s.on('error', function (err) {
t.same(err.message, 'stop')
t.end()
})
s.setPipeline(a, b, c)
s.resume()
s.write('hi')
})
tape('preserves error again', function (t) {
var ws = new stream.Writable()
var rs = new stream.Readable({highWaterMark: 16})
ws._write = function (data, enc, cb) {
cb(null)
}
rs._read = function () {
process.nextTick(function () {
rs.push('hello world')
})
}
var pumpifyErr = pumpify(
through(),
through(function(chunk, _, cb) {
cb(new Error('test'))
}),
ws
)
rs.pipe(pumpifyErr)
.on('error', function (err) {
t.ok(err)
t.ok(err.message !== 'premature close', 'does not close with premature close')
t.end()
})
})
tape('returns error from duplexify', function (t) {
var a = through()
var b = duplexify()
var s = pumpify()
s.setPipeline(a, b)
s.on('error', function (err) {
t.same(err.message, 'stop')
t.end()
})
s.write('data')
// Test passes if `.end()` is not called
s.end()
b.setWritable(through())
setImmediate(function () {
b.destroy(new Error('stop'))
})
})