[Sheriff-o-matic] Remove race condition on the commit list.

Tools/GardeningServer/model/test/ct-commit-log-tests.html

 <!--
 Copyright 2014 The Chromium Authors. All rights reserved.
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 -->
 
 <link rel="import" href="../ct-commit-log.html">
 
 <link rel="import" href="../ct-commit-mock.html">
 
@@ skipping 29 matching lines @@
         ]
       });
 
     var repositoryUrl = 'http://mockurl/?{revision}';
     var repository = 'blink';
 
     var log = new CTCommitLog();
     log._handleResponse(repositoryUrl, repository, exampleCommitData);
 
     var expectedCommits = {};
-    expectedCommits[repository] = {};
+    log._repositories.names().forEach(function(name) {
+      expectedCommits[name] = {};
+    });
     expectedCommits[repository][commit.revision] = commit;
     assert.deepEqual(log.commits, expectedCommits);
 
     assert.deepEqual(log.range(repository, commit.revision, commit.revision), [commit]);
-    assert.deepEqual(log.range(repository, commit.revision, commit.revision + 1), [commit]);
+
     // This url is different than the one obove because CTCommitLog gets the url
     // from CTRepositories.
     var incompleteRepositoryUrl = log._repositories.repositories[repository].repositoryUrl;
-    var incompleteCommit = CTCommit.createIncomplete(incompleteRepositoryUrl, commit.revision - 1, repository);
-    assert.deepEqual(log.range(repository, commit.revision - 1, commit.revision + 1), [incompleteCommit, commit]);
+    var incompleteCommitAfter = CTCommit.createIncomplete(incompleteRepositoryUrl, commit.revision + 1, repository);
+    // Expect an incomplete commit for revision + 1.
+    assert.deepEqual(log.range(repository, commit.revision, commit.revision + 1), [commit, incompleteCommitAfter]);
+
+    // Expect two incomplete commits: one before and one after.
+    var incompleteCommitBefore = CTCommit.createIncomplete(incompleteRepositoryUrl, commit.revision - 1, repository);
+    assert.deepEqual(log.range(repository, commit.revision - 1, commit.revision + 1),
+                     [incompleteCommitBefore, commit, incompleteCommitAfter]);
   });
 });
 
 })();
 </script>