test-node.js
631422e9a504validity_dates

test-node.js
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			var pump = require('./index')

			var rs = require('fs').createReadStream('/dev/random')
			var ws = require('fs').createWriteStream('/dev/null')

			var toHex = function () {
			var reverse = new (require('stream').Transform)()

			reverse._transform = function (chunk, enc, callback) {
			reverse.push(chunk.toString('hex'))
			callback()
			}

			return reverse
			}

			var wsClosed = false
			var rsClosed = false
			var callbackCalled = false

			var check = function () {
			if (wsClosed && rsClosed && callbackCalled) {
			console.log('test-node.js passes')
			clearTimeout(timeout)
			}
			}

			ws.on('close', function () {
			wsClosed = true
			check()
			})

			rs.on('close', function () {
			rsClosed = true
			check()
			})

			var res = pump(rs, toHex(), toHex(), toHex(), ws, function () {
			callbackCalled = true
			check()
			})

			if (res !== ws) {
			throw new Error('should return last stream')
			}

			setTimeout(function () {
			rs.destroy()
			}, 1000)

			var timeout = setTimeout(function () {
			throw new Error('timeout')
			}, 5000)