1 files changed, 121 insertions, 0 deletions
diff --git a/rel/overlay/share/www/script/test/recreate_doc.js b/rel/overlay/share/www/script/test/recreate_doc.js
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+// 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.recreate_doc = function(debug) {
+  var db = new CouchDB("test_suite_db", {"X-Couch-Full-Commit":"false"});
+  db.deleteDb();
+  db.createDb();
+  if (debug) debugger;
+
+  // First create a new document with the ID "foo", and delete it again
+  var doc = {_id: "foo", a: "bar", b: 42};
+  var result = db.save(doc);
+  T(result.ok);
+  var firstRev = result.rev;
+  T(db.deleteDoc(doc).ok);
+
+  // Now create a new document with the same ID, save it, and then modify it
+  for (var i = 0; i < 10; i++) {
+    doc = {_id: "foo"};
+    T(db.save(doc).ok);
+    doc = db.open("foo");
+    doc.a = "baz";
+    T(db.save(doc).ok);
+    T(db.deleteDoc(doc).rev != undefined);
+  }
+
+  try {
+    // COUCHDB-292 now attempt to save the document with a prev that's since
+    // been deleted and this should generate a conflict exception
+    db.save({_id:"foo", _rev:firstRev, bar:1});
+    T("no save conflict 1" && false); // we shouldn't hit here
+  } catch (e) {
+    T(e.error == "conflict");
+  }
+  
+  var binAttDoc = {
+    _id: "foo",
+    _rev:firstRev,
+    _attachments:{
+      "foo.txt": {
+        content_type:"text/plain",
+        data: "VGhpcyBpcyBhIGJhc2U2NCBlbmNvZGVkIHRleHQ="
+      }
+    }
+  };
+  try {
+    // same as before, but with binary
+    db.save(binAttDoc);
+    T("no save conflict 2" && false); // we shouldn't hit here
+  } catch (e) {
+    T(e.error == "conflict");
+  }
+
+
+  try {
+    // random non-existant prev rev
+    db.save({_id:"foo", _rev:"1-asfafasdf", bar:1});
+    T("no save conflict 3" && false); // we shouldn't hit here
+  } catch (e) {
+    T(e.error == "conflict");
+  }
+  
+  try {
+    // random non-existant prev rev with bin
+    binAttDoc._rev = "1-aasasfasdf";
+    db.save(binAttDoc);
+    T("no save conflict 4" && false); // we shouldn't hit here
+  } 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;
+  }
+};