@seeessence/stream/test.js

Two-way duplex stream

var block = require('./index.js');
var unit = require('unit');

var foward = function (object, callback) {
    callback(null, object);
};

var back = function (object, callback) {
    callback(null, object);
};

unit('text', 'back function').pipe(
    block(foward, back, 'stream').pipe(
        unit('text', 'foward function')
    )
);