Merge changes from topic "rebase-on-closed-change"

* changes:
  Prevent related changes when rebasing on the tip of a branch
  ChangeIT: Check related changes of rebased change
  Support Get Related in extension API
  CommitInfo: Handle root commits in toString()

java/com/google/gerrit/acceptance/AbstractDaemonTest.java

@@ -50,6 +50,7 @@ import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.common.data.PermissionRule;
 import com.google.gerrit.common.data.PermissionRule.Action;
 import com.google.gerrit.extensions.api.GerritApi;
+import com.google.gerrit.extensions.api.changes.RelatedChangeAndCommitInfo;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
 import com.google.gerrit.extensions.api.changes.RevisionApi;
 import com.google.gerrit.extensions.api.changes.SubmittedTogetherInfo;
@@ -1714,4 +1715,13 @@ public abstract class AbstractDaemonTest {
     comments.sort(Comparator.comparing(c -> c.id));
     return comments;
   }
+
+  protected List<RelatedChangeAndCommitInfo> getRelated(PatchSet.Id ps) throws Exception {
+    return getRelated(ps.getParentKey(), ps.get());
+  }
+
+  protected List<RelatedChangeAndCommitInfo> getRelated(Change.Id changeId, int ps)
+      throws Exception {
+    return gApi.changes().id(changeId.get()).revision(ps).related().changes;
+  }
 }

java/com/google/gerrit/extensions/api/changes/RelatedChangeAndCommitInfo.java

@@ -0,0 +1,55 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// 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.
+
+package com.google.gerrit.extensions.api.changes;
+
+import com.google.common.base.MoreObjects;
+import com.google.gerrit.extensions.common.CommitInfo;
+
+public class RelatedChangeAndCommitInfo {
+  public String project;
+  public String changeId;
+  public CommitInfo commit;
+  public Integer _changeNumber;
+  public Integer _revisionNumber;
+  public Integer _currentRevisionNumber;
+  public String status;
+
+  public RelatedChangeAndCommitInfo() {}
+
+  @Override
+  public String toString() {
+    return MoreObjects.toStringHelper(this)
+        .add("project", project)
+        .add("changeId", changeId)
+        .add("commit", toString(commit))
+        .add("_changeNumber", _changeNumber)
+        .add("_revisionNumber", _revisionNumber)
+        .add("_currentRevisionNumber", _currentRevisionNumber)
+        .add("status", status)
+        .toString();
+  }
+
+  private static String toString(CommitInfo commit) {
+    return MoreObjects.toStringHelper(commit)
+        .add("commit", commit.commit)
+        .add("parent", commit.parents)
+        .add("author", commit.author)
+        .add("committer", commit.committer)
+        .add("subject", commit.subject)
+        .add("message", commit.message)
+        .add("webLinks", commit.webLinks)
+        .toString();
+  }
+}

java/com/google/gerrit/extensions/api/changes/RelatedChangesInfo.java

@@ -0,0 +1,21 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// 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.
+
+package com.google.gerrit.extensions.api.changes;
+
+import java.util.List;
+
+public class RelatedChangesInfo {
+  public List<RelatedChangeAndCommitInfo> changes;
+}

java/com/google/gerrit/extensions/api/changes/RevisionApi.java

@@ -133,6 +133,8 @@ public interface RevisionApi {
 
   MergeListRequest getMergeList() throws RestApiException;
 
+  RelatedChangesInfo related() throws RestApiException;
+
   abstract class MergeListRequest {
     private boolean addLinks;
     private int uninterestingParent = 1;
@@ -370,6 +372,11 @@ public interface RevisionApi {
       throw new NotImplementedException();
     }
 
+    @Override
+    public RelatedChangesInfo related() throws RestApiException {
+      throw new NotImplementedException();
+    }
+
     @Override
     public void description(String description) throws RestApiException {
       throw new NotImplementedException();

java/com/google/gerrit/extensions/common/CommitInfo.java

@@ -53,7 +53,9 @@ public class CommitInfo {
     // Using something like the raw commit format might be nice, but we can't depend on JGit here.
     StringBuilder sb = new StringBuilder().append(getClass().getSimpleName()).append('{');
     sb.append(commit);
-    sb.append(", parents=").append(parents.stream().map(p -> p.commit).collect(joining(", ")));
+    if (parents != null) {
+      sb.append(", parents=").append(parents.stream().map(p -> p.commit).collect(joining(", ")));
+    }
     sb.append(", author=").append(author);
     sb.append(", committer=").append(committer);
     sb.append(", subject=").append(subject);

java/com/google/gerrit/server/api/changes/RevisionApiImpl.java

@@ -26,6 +26,7 @@ import com.google.gerrit.extensions.api.changes.DraftApi;
 import com.google.gerrit.extensions.api.changes.DraftInput;
 import com.google.gerrit.extensions.api.changes.FileApi;
 import com.google.gerrit.extensions.api.changes.RebaseInput;
+import com.google.gerrit.extensions.api.changes.RelatedChangesInfo;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
 import com.google.gerrit.extensions.api.changes.ReviewResult;
 import com.google.gerrit.extensions.api.changes.RevisionApi;
@@ -64,6 +65,7 @@ import com.google.gerrit.server.restapi.change.GetCommit;
 import com.google.gerrit.server.restapi.change.GetDescription;
 import com.google.gerrit.server.restapi.change.GetMergeList;
 import com.google.gerrit.server.restapi.change.GetPatch;
+import com.google.gerrit.server.restapi.change.GetRelated;
 import com.google.gerrit.server.restapi.change.GetRevisionActions;
 import com.google.gerrit.server.restapi.change.ListRevisionComments;
 import com.google.gerrit.server.restapi.change.ListRevisionDrafts;
@@ -129,6 +131,7 @@ class RevisionApiImpl implements RevisionApi {
   private final TestSubmitType.Get getSubmitType;
   private final Provider<TestSubmitRule> testSubmitRule;
   private final Provider<GetMergeList> getMergeList;
+  private final GetRelated getRelated;
   private final PutDescription putDescription;
   private final GetDescription getDescription;
 
@@ -169,6 +172,7 @@ class RevisionApiImpl implements RevisionApi {
       TestSubmitType.Get getSubmitType,
       Provider<TestSubmitRule> testSubmitRule,
       Provider<GetMergeList> getMergeList,
+      GetRelated getRelated,
       PutDescription putDescription,
       GetDescription getDescription,
       @Assisted RevisionResource r) {
@@ -207,6 +211,7 @@ class RevisionApiImpl implements RevisionApi {
     this.getSubmitType = getSubmitType;
     this.testSubmitRule = testSubmitRule;
     this.getMergeList = getMergeList;
+    this.getRelated = getRelated;
     this.putDescription = putDescription;
     this.getDescription = getDescription;
     this.revision = r;
@@ -589,6 +594,15 @@ class RevisionApiImpl implements RevisionApi {
     };
   }
 
+  @Override
+  public RelatedChangesInfo related() throws RestApiException {
+    try {
+      return getRelated.apply(revision);
+    } catch (Exception e) {
+      throw asRestApiException("Cannot get related changes", e);
+    }
+  }
+
   @Override
   public void description(String description) throws RestApiException {
     DescriptionInput in = new DescriptionInput();

java/com/google/gerrit/server/change/RebaseChangeOp.java

@@ -20,12 +20,14 @@ import com.google.gerrit.extensions.api.changes.NotifyHandling;
 import com.google.gerrit.extensions.restapi.MergeConflictException;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.extensions.restapi.RestApiException;
+import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.RevId;
 import com.google.gerrit.server.ChangeUtil;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.change.RebaseUtil.Base;
+import com.google.gerrit.server.git.GroupCollector;
 import com.google.gerrit.server.git.MergeUtil;
 import com.google.gerrit.server.notedb.ChangeNotes;
 import com.google.gerrit.server.permissions.PermissionBackendException;
@@ -199,8 +201,14 @@ public class RebaseChangeOp implements BatchUpdateOp {
               + " was rebased");
     }
 
-    if (base != null) {
-      patchSetInserter.setGroups(base.patchSet().getGroups());
+    if (base != null && base.notes().getChange().getStatus() != Change.Status.MERGED) {
+      if (base.notes().getChange().getStatus() != Change.Status.MERGED) {
+        // Add to end of relation chain for open base change.
+        patchSetInserter.setGroups(base.patchSet().getGroups());
+      } else {
+        // If the base is merged, start a new relation chain.
+        patchSetInserter.setGroups(GroupCollector.getDefaultGroups(rebasedCommit));
+      }
     }
     patchSetInserter.updateRepo(ctx);
   }

java/com/google/gerrit/server/restapi/change/GetRelated.java

@@ -17,9 +17,10 @@ package com.google.gerrit.server.restapi.change;
 import static java.util.stream.Collectors.toSet;
 
 import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.MoreObjects;
 import com.google.common.collect.Lists;
 import com.google.gerrit.common.Nullable;
+import com.google.gerrit.extensions.api.changes.RelatedChangeAndCommitInfo;
+import com.google.gerrit.extensions.api.changes.RelatedChangesInfo;
 import com.google.gerrit.extensions.common.CommitInfo;
 import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gerrit.index.IndexConfig;
@@ -70,15 +71,15 @@ public class GetRelated implements RestReadView<RevisionResource> {
   }
 
   @Override
-  public RelatedInfo apply(RevisionResource rsrc)
+  public RelatedChangesInfo apply(RevisionResource rsrc)
       throws RepositoryNotFoundException, IOException, OrmException, NoSuchProjectException,
           PermissionBackendException {
-    RelatedInfo relatedInfo = new RelatedInfo();
-    relatedInfo.changes = getRelated(rsrc);
-    return relatedInfo;
+    RelatedChangesInfo relatedChangesInfo = new RelatedChangesInfo();
+    relatedChangesInfo.changes = getRelated(rsrc);
+    return relatedChangesInfo;
   }
 
-  private List<ChangeAndCommit> getRelated(RevisionResource rsrc)
+  private List<RelatedChangeAndCommitInfo> getRelated(RevisionResource rsrc)
       throws OrmException, IOException, PermissionBackendException {
     Set<String> groups = getAllGroups(rsrc.getNotes(), db.get(), psUtil);
     if (groups.isEmpty()) {
@@ -94,7 +95,7 @@ public class GetRelated implements RestReadView<RevisionResource> {
     if (cds.size() == 1 && cds.get(0).getId().equals(rsrc.getChange().getId())) {
       return Collections.emptyList();
     }
-    List<ChangeAndCommit> result = new ArrayList<>(cds.size());
+    List<RelatedChangeAndCommitInfo> result = new ArrayList<>(cds.size());
 
     boolean isEdit = rsrc.getEdit().isPresent();
     PatchSet basePs = isEdit ? rsrc.getEdit().get().getBasePatchSet() : rsrc.getPatchSet();
@@ -111,11 +112,11 @@ public class GetRelated implements RestReadView<RevisionResource> {
       } else {
         commit = d.commit();
       }
-      result.add(new ChangeAndCommit(rsrc.getProject(), d.data().change(), ps, commit));
+      result.add(newChangeAndCommit(rsrc.getProject(), d.data().change(), ps, commit));
     }
 
     if (result.size() == 1) {
-      ChangeAndCommit r = result.get(0);
+      RelatedChangeAndCommitInfo r = result.get(0);
       if (r.commit != null && r.commit.commit.equals(rsrc.getPatchSet().getRevision().get())) {
         return Collections.emptyList();
       }
@@ -143,69 +144,30 @@ public class GetRelated implements RestReadView<RevisionResource> {
     }
   }
 
-  public static class RelatedInfo {
-    public List<ChangeAndCommit> changes;
-  }
+  static RelatedChangeAndCommitInfo newChangeAndCommit(
+      Project.NameKey project, @Nullable Change change, @Nullable PatchSet ps, RevCommit c) {
+    RelatedChangeAndCommitInfo info = new RelatedChangeAndCommitInfo();
+    info.project = project.get();
 
-  public static class ChangeAndCommit {
-    public String project;
-    public String changeId;
-    public CommitInfo commit;
-    public Integer _changeNumber;
-    public Integer _revisionNumber;
-    public Integer _currentRevisionNumber;
-    public String status;
-
-    public ChangeAndCommit() {}
-
-    ChangeAndCommit(
-        Project.NameKey project, @Nullable Change change, @Nullable PatchSet ps, RevCommit c) {
-      this.project = project.get();
-
-      if (change != null) {
-        changeId = change.getKey().get();
-        _changeNumber = change.getChangeId();
-        _revisionNumber = ps != null ? ps.getPatchSetId() : null;
-        PatchSet.Id curr = change.currentPatchSetId();
-        _currentRevisionNumber = curr != null ? curr.get() : null;
-        status = change.getStatus().asChangeStatus().toString();
-      }
-
-      commit = new CommitInfo();
-      commit.commit = c.name();
-      commit.parents = Lists.newArrayListWithCapacity(c.getParentCount());
-      for (int i = 0; i < c.getParentCount(); i++) {
-        CommitInfo p = new CommitInfo();
-        p.commit = c.getParent(i).name();
-        commit.parents.add(p);
-      }
-      commit.author = CommonConverters.toGitPerson(c.getAuthorIdent());
-      commit.subject = c.getShortMessage();
+    if (change != null) {
+      info.changeId = change.getKey().get();
+      info._changeNumber = change.getChangeId();
+      info._revisionNumber = ps != null ? ps.getPatchSetId() : null;
+      PatchSet.Id curr = change.currentPatchSetId();
+      info._currentRevisionNumber = curr != null ? curr.get() : null;
+      info.status = change.getStatus().asChangeStatus().toString();
     }
 
-    @Override
-    public String toString() {
-      return MoreObjects.toStringHelper(this)
-          .add("project", project)
-          .add("changeId", changeId)
-          .add("commit", toString(commit))
-          .add("_changeNumber", _changeNumber)
-          .add("_revisionNumber", _revisionNumber)
-          .add("_currentRevisionNumber", _currentRevisionNumber)
-          .add("status", status)
-          .toString();
-    }
-
-    private static String toString(CommitInfo commit) {
-      return MoreObjects.toStringHelper(commit)
-          .add("commit", commit.commit)
-          .add("parent", commit.parents)
-          .add("author", commit.author)
-          .add("committer", commit.committer)
-          .add("subject", commit.subject)
-          .add("message", commit.message)
-          .add("webLinks", commit.webLinks)
-          .toString();
+    info.commit = new CommitInfo();
+    info.commit.commit = c.name();
+    info.commit.parents = Lists.newArrayListWithCapacity(c.getParentCount());
+    for (int i = 0; i < c.getParentCount(); i++) {
+      CommitInfo p = new CommitInfo();
+      p.commit = c.getParent(i).name();
+      info.commit.parents.add(p);
     }
+    info.commit.author = CommonConverters.toGitPerson(c.getAuthorIdent());
+    info.commit.subject = c.getShortMessage();
+    return info;
   }
 }

javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java

@@ -80,6 +80,7 @@ import com.google.gerrit.extensions.api.changes.NotifyHandling;
 import com.google.gerrit.extensions.api.changes.NotifyInfo;
 import com.google.gerrit.extensions.api.changes.RebaseInput;
 import com.google.gerrit.extensions.api.changes.RecipientType;
+import com.google.gerrit.extensions.api.changes.RelatedChangeAndCommitInfo;
 import com.google.gerrit.extensions.api.changes.RevertInput;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
 import com.google.gerrit.extensions.api.changes.ReviewInput.DraftHandling;
@@ -943,13 +944,77 @@ public class ChangeIT extends AbstractDaemonTest {
     RevisionInfo ri2 = ci2.revisions.get(ci2.currentRevision);
     assertThat(ri2.commit.parents.get(0).commit).isEqualTo(branchTip);
 
+    Change.Id id1 = r1.getChange().getId();
     RebaseInput in = new RebaseInput();
-    in.base = Integer.toString(r1.getChange().getId().get());
+    in.base = id1.toString();
     gApi.changes().id(r2.getChangeId()).rebase(in);
 
+    Change.Id id2 = r2.getChange().getId();
     ci2 = get(r2.getChangeId(), CURRENT_REVISION, CURRENT_COMMIT);
     ri2 = ci2.revisions.get(ci2.currentRevision);
     assertThat(ri2.commit.parents.get(0).commit).isEqualTo(r1.getCommit().name());
+
+    List<RelatedChangeAndCommitInfo> related = getRelated(id2, ri2._number);
+    assertThat(related).hasSize(2);
+    assertThat(related.get(0)._changeNumber).isEqualTo(id2.get());
+    assertThat(related.get(0)._revisionNumber).isEqualTo(2);
+    assertThat(related.get(1)._changeNumber).isEqualTo(id1.get());
+    assertThat(related.get(1)._revisionNumber).isEqualTo(1);
+  }
+
+  @Test
+  public void rebaseOnClosedChange() throws Exception {
+    String branchTip = testRepo.getRepository().exactRef("HEAD").getObjectId().name();
+    PushOneCommit.Result r1 = createChange();
+    testRepo.reset("HEAD~1");
+    PushOneCommit.Result r2 = createChange();
+
+    ChangeInfo ci2 = get(r2.getChangeId(), CURRENT_REVISION, CURRENT_COMMIT);
+    RevisionInfo ri2 = ci2.revisions.get(ci2.currentRevision);
+    assertThat(ri2.commit.parents.get(0).commit).isEqualTo(branchTip);
+
+    // Submit first change.
+    Change.Id id1 = r1.getChange().getId();
+    gApi.changes().id(id1.get()).current().review(ReviewInput.approve());
+    gApi.changes().id(id1.get()).current().submit();
+
+    // Rebase second change on first change.
+    RebaseInput in = new RebaseInput();
+    in.base = id1.toString();
+    gApi.changes().id(r2.getChangeId()).rebase(in);
+
+    Change.Id id2 = r2.getChange().getId();
+    ci2 = get(r2.getChangeId(), CURRENT_REVISION, CURRENT_COMMIT);
+    ri2 = ci2.revisions.get(ci2.currentRevision);
+    assertThat(ri2.commit.parents.get(0).commit).isEqualTo(r1.getCommit().name());
+
+    assertThat(getRelated(id2, ri2._number)).isEmpty();
+  }
+
+  @Test
+  public void rebaseFromRelationChainToClosedChange() throws Exception {
+    PushOneCommit.Result r1 = createChange();
+    testRepo.reset("HEAD~1");
+
+    createChange();
+    PushOneCommit.Result r3 = createChange();
+
+    // Submit first change.
+    Change.Id id1 = r1.getChange().getId();
+    gApi.changes().id(id1.get()).current().review(ReviewInput.approve());
+    gApi.changes().id(id1.get()).current().submit();
+
+    // Rebase third change on first change.
+    RebaseInput in = new RebaseInput();
+    in.base = id1.toString();
+    gApi.changes().id(r3.getChangeId()).rebase(in);
+
+    Change.Id id3 = r3.getChange().getId();
+    ChangeInfo ci3 = get(r3.getChangeId(), CURRENT_REVISION, CURRENT_COMMIT);
+    RevisionInfo ri3 = ci3.revisions.get(ci3.currentRevision);
+    assertThat(ri3.commit.parents.get(0).commit).isEqualTo(r1.getCommit().name());
+
+    assertThat(getRelated(id3, ri3._number)).isEmpty();
   }
 
   @Test

javatests/com/google/gerrit/acceptance/server/change/GetRelatedIT.java

@@ -24,9 +24,10 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Iterables;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.GerritConfig;
+import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.acceptance.PushOneCommit;
-import com.google.gerrit.acceptance.RestResponse;
 import com.google.gerrit.common.RawInputUtil;
+import com.google.gerrit.extensions.api.changes.RelatedChangeAndCommitInfo;
 import com.google.gerrit.extensions.common.CommitInfo;
 import com.google.gerrit.extensions.common.EditInfo;
 import com.google.gerrit.index.IndexConfig;
@@ -35,8 +36,6 @@ import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.server.query.change.ChangeData;
 import com.google.gerrit.server.restapi.change.ChangesCollection;
 import com.google.gerrit.server.restapi.change.GetRelated;
-import com.google.gerrit.server.restapi.change.GetRelated.ChangeAndCommit;
-import com.google.gerrit.server.restapi.change.GetRelated.RelatedInfo;
 import com.google.gerrit.server.update.BatchUpdate;
 import com.google.gerrit.server.update.BatchUpdateOp;
 import com.google.gerrit.server.update.ChangeContext;
@@ -56,6 +55,7 @@ import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 
+@NoHttpd
 public class GetRelatedIT extends AbstractDaemonTest {
   private static final int MAX_TERMS = 10;
 
@@ -577,17 +577,6 @@ public class GetRelatedIT extends AbstractDaemonTest {
     assertRelated(cd.change().currentPatchSetId());
   }
 
-  private List<ChangeAndCommit> getRelated(PatchSet.Id ps) throws Exception {
-    return getRelated(ps.getParentKey(), ps.get());
-  }
-
-  private List<ChangeAndCommit> getRelated(Change.Id changeId, int ps) throws Exception {
-    String url = String.format("/changes/%d/revisions/%d/related", changeId.get(), ps);
-    RestResponse r = adminRestSession.get(url);
-    r.assertOK();
-    return newGson().fromJson(r.getReader(), RelatedInfo.class).changes;
-  }
-
   private RevCommit parseBody(RevCommit c) throws Exception {
     testRepo.getRevWalk().parseBody(c);
     return c;
@@ -601,9 +590,9 @@ public class GetRelatedIT extends AbstractDaemonTest {
     return Iterables.getOnlyElement(queryProvider.get().byCommit(c));
   }
 
-  private ChangeAndCommit changeAndCommit(
+  private RelatedChangeAndCommitInfo changeAndCommit(
       PatchSet.Id psId, ObjectId commitId, int currentRevisionNum) {
-    ChangeAndCommit result = new ChangeAndCommit();
+    RelatedChangeAndCommitInfo result = new RelatedChangeAndCommitInfo();
     result.project = project.get();
     result._changeNumber = psId.getParentKey().get();
     result.commit = new CommitInfo();
@@ -631,13 +620,14 @@ public class GetRelatedIT extends AbstractDaemonTest {
     }
   }
 
-  private void assertRelated(PatchSet.Id psId, ChangeAndCommit... expected) throws Exception {
-    List<ChangeAndCommit> actual = getRelated(psId);
+  private void assertRelated(PatchSet.Id psId, RelatedChangeAndCommitInfo... expected)
+      throws Exception {
+    List<RelatedChangeAndCommitInfo> actual = getRelated(psId);
     assertThat(actual).named("related to " + psId).hasSize(expected.length);
     for (int i = 0; i < actual.size(); i++) {
       String name = "index " + i + " related to " + psId;
-      ChangeAndCommit a = actual.get(i);
-      ChangeAndCommit e = expected[i];
+      RelatedChangeAndCommitInfo a = actual.get(i);
+      RelatedChangeAndCommitInfo e = expected[i];
       assertThat(a.project).named("project of " + name).isEqualTo(e.project);
       assertThat(a._changeNumber).named("change ID of " + name).isEqualTo(e._changeNumber);
       // Don't bother checking changeId; assume _changeNumber is sufficient.