test/javascript/tests/replicator_db_identical_continuous.js

// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.

couchTests.skip = true;
couchTests.replicator_db_identical_continuous = function(debug) {
  if (debug) debugger;

  var populate_db = replicator_db.populate_db;
  var docs1 = replicator_db.docs1;
  var dbA = replicator_db.dbA;
  var dbB = replicator_db.dbB;
  var repDb = replicator_db.repDb;
  var wait = replicator_db.wait;
  var waitForRep = replicator_db.waitForRep;
  var waitForSeq = replicator_db.waitForSeq;
  var wait_rep_doc = replicator_db.wait_rep_doc;

  // test the case where multiple replication docs (different IDs)
  // describe in fact the same continuous replication (source, target, etc)
  function identical_continuous_rep_docs() {
    populate_db(dbA, docs1);
    populate_db(dbB, []);

    var repDoc1 = {
      _id: "foo_dup_cont_rep_doc_1",
      source: "http://" + CouchDB.host + "/" + dbA.name,
      target: dbB.name,
      continuous: true
    };
    var repDoc2 = {
      _id: "foo_dup_cont_rep_doc_2",
      source: "http://" + CouchDB.host + "/" + dbA.name,
      target: dbB.name,
      continuous: true
    };

    T(repDb.save(repDoc1).ok);
    T(repDb.save(repDoc2).ok);

    waitForSeq(dbA, dbB);
    for (var i = 0; i < docs1.length; i++) {
      var doc = docs1[i];
      var copy = dbB.open(doc._id);
      T(copy !== null);
      T(copy.value === doc.value);
    }

    // Rather than a timeout we're just waiting to hear the
    // fourth change to the database. Changes 1 and 2 were
    // us storing repDoc1 and repDoc2. Changes 3 and 4 are
    // the replicator manager updating each document. This
    // just waits until the fourth change before continuing.
    repDb.changes({"feed":"longpoll", "since":3});

    repDoc1 = repDb.open("foo_dup_cont_rep_doc_1");
    T(repDoc1 !== null);
    T(repDoc1._replication_state === "triggered");
    T(typeof repDoc1._replication_state_time === "string");
    T(typeof repDoc1._replication_id  === "string");

    repDoc2 = repDb.open("foo_dup_cont_rep_doc_2");
    T(repDoc2 !== null);
    T(typeof repDoc2._replication_state === "undefined");
    T(typeof repDoc2._replication_state_time === "undefined");
    T(repDoc2._replication_id === repDoc1._replication_id);

    var newDoc = {
      _id: "foo666",
      value: 999
    };
    T(dbA.save(newDoc).ok);

    waitForSeq(dbA, dbB);
    var copy = dbB.open("foo666");
    T(copy !== null);
    T(copy.value === 999);

    // deleting second replication doc, doesn't affect the 1st one and
    // neither it stops the replication
    T(repDb.deleteDoc(repDoc2).ok);
    repDoc1 = repDb.open("foo_dup_cont_rep_doc_1");
    T(repDoc1 !== null);
    T(repDoc1._replication_state === "triggered");
    T(typeof repDoc1._replication_state_time === "string");

    var newDoc2 = {
        _id: "foo5000",
        value: 5000
    };
    T(dbA.save(newDoc2).ok);

    waitForSeq(dbA, dbB);
    var copy = dbB.open("foo5000");
    T(copy !== null);
    T(copy.value === 5000);

    // deleting the 1st replication document stops the replication
    T(repDb.deleteDoc(repDoc1).ok);
    var newDoc3 = {
        _id: "foo1983",
        value: 1983
    };
    T(dbA.save(newDoc3).ok);

    wait(wait_rep_doc); //how to remove wait?
    var copy = dbB.open("foo1983");
    T(copy === null);
  }

  var server_config = [
    {
      section: "couch_httpd_auth",
      key: "iterations",
      value: "1"
    },
    {
      section: "replicator",
      key: "db",
      value: repDb.name
    }
  ];

  repDb.deleteDb();
  run_on_modified_server(server_config, identical_continuous_rep_docs);

  // cleanup
  repDb.deleteDb();
  dbA.deleteDb();
  dbB.deleteDb();
}