gistfile1.js

var pouch = require('pouchdb');

var pouches = {
  http1: 'http://localhost:5984/http1',
  http2: 'http://localhost:5984/http2',
  ldb1: 'ldb://testdb1',
  ldb2: 'ldb://testdb2',
}

Object.keys(pouches).forEach(function(key) {
  var url = pouches[key];
  pouch.destroy(url, function(err) {
    if (err) {
      console.log(url, err);
    }
    pouches[key] = pouch(url, inittest);
  });
});

var count = 0;
function inittest(err, db) {
  if (err) {
    return console.log(err);
  }
  if (++count === Object.keys(pouches).length) {
    start();
  }
}

function start() {
  console.log('===== starting test =====');

  // switch out drivers here
  var pouch1 = pouches.http1
  var pouch2 = pouches.ldb1

  pouch2.put({_id: 'test1', hello:'pouch'}, function(err, result1) {
    console.log('--- PUT1', err, result1);
    pouch2.replicate.to(pouch1, function(err, result2) {
      console.log('--- replication to http complete', result2);
      pouch1.put({_id: result1.id, _rev: result1.rev, hello: 'couch'}, function(err, result3) {
        console.log('--- [http] PUT2:', err, result3);

        pouch2.put({_id: result1.id, _rev: result1.rev, hello: 'world'}, function(err, result4) {
          console.log('--- [ldb] PUT2:', err, result4);

          pouch2.replicate.to(pouch1, function(err, result5) {
            console.log('--- replication 2 to http complete:', err, result5);
            console.log('-----------------------------------');
            function log(err, result) {
              console.log('>>> LOG:', err, result);
            }
            pouch1.get(result1.id, log);
            pouch2.get(result1.id, log);
          });
        });
      });
    });
  });
}