From 840cb720094f660904789210a4b07a10cf90430f Mon Sep 17 00:00:00 2001 From: Paul Joseph Davis Date: Fri, 2 Sep 2011 04:34:04 +0000 Subject: Fixes COUCHDB-1265 Backport of 1164350 from trunk. Slightly modified for an export declaration conflict and removing a clause that only applies to trunk. git-svn-id: https://svn.apache.org/repos/asf/couchdb/branches/1.1.x@1164351 13f79535-47bb-0310-9956-ffa450edef68 --- share/www/script/test/recreate_doc.js | 41 +++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'share/www/script/test') diff --git a/share/www/script/test/recreate_doc.js b/share/www/script/test/recreate_doc.js index 05843558..a1cfb8f8 100644 --- a/share/www/script/test/recreate_doc.js +++ b/share/www/script/test/recreate_doc.js @@ -77,4 +77,45 @@ couchTests.recreate_doc = function(debug) { } catch (e) { T(e.error == "conflict"); } + + db.deleteDb(); + db.createDb(); + + // COUCHDB-1265 + // Resuscitate an unavailable old revision and make sure that it + // doesn't introduce duplicates into the _changes feed. + + var doc = {_id: "bar", count: 0}; + T(db.save(doc).ok); + var ghost = {_id: "bar", _rev: doc._rev, count: doc.count}; + for(var i = 0; i < 2; i++) { + doc.count += 1; + T(db.save(doc).ok); + } + + // Compact so that the old revision to be resuscitated will be + // in the rev_tree as ?REV_MISSING + db.compact(); + while(db.info().compact_running) {} + + // Saving the ghost here puts it back in the rev_tree in such + // a way as to create a new update_seq but without changing a + // leaf revision. This would cause the #full_doc_info{} and + // #doc_info{} records to diverge in their idea of what the + // doc's update_seq is and end up introducing a duplicate in + // the _changes feed the next time this doc is updated. + T(db.save(ghost, {new_edits: false}).ok); + + // The duplicate would have been introduce here becuase the #doc_info{} + // would not have been removed correctly. + T(db.save(doc).ok); + + // And finally assert that there are no duplicates in _changes. + var req = CouchDB.request("GET", "/test_suite_db/_changes"); + var resp = JSON.parse(req.responseText); + var docids = {}; + for(var i = 0; i < resp.results.length; i++) { + T(docids[resp.results[i].id] === undefined, "Duplicates in _changes feed."); + docids[resp.results[i].id] = true; + } }; -- cgit v1.2.3