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// Copyright (C) 2017 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.server.update;
import static com.google.common.truth.Truth.assertThat;
import static com.google.gerrit.testing.TestActionRefUpdateContext.testRefAction;
import static org.eclipse.jgit.lib.Constants.R_HEADS;
import com.google.gerrit.entities.Project;
import com.google.gerrit.testing.InMemoryRepositoryManager;
import org.eclipse.jgit.junit.TestRepository;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.StoredConfig;
import org.eclipse.jgit.transport.ReceiveCommand;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class RepoViewTest {
private static final String MASTER = "refs/heads/master";
private static final String BRANCH = "refs/heads/branch";
private Repository repo;
private TestRepository<?> tr;
private RepoView view;
@Before
public void setUp() throws Exception {
InMemoryRepositoryManager repoManager = new InMemoryRepositoryManager();
Project.NameKey project = Project.nameKey("project");
repo = repoManager.createRepository(project);
tr =
testRefAction(
() -> {
TestRepository<?> testRepo = new TestRepository<>(repo);
testRepo.branch(MASTER).commit().create();
return testRepo;
});
view = new RepoView(repoManager, project);
}
@After
public void tearDown() {
view.close();
repo.close();
}
@Test
public void getConfigIsDefensiveCopy() throws Exception {
StoredConfig orig = repo.getConfig();
orig.setString("a", "config", "option", "yes");
orig.save();
Config copy = view.getConfig();
copy.setString("a", "config", "option", "no");
assertThat(orig.getString("a", "config", "option")).isEqualTo("yes");
assertThat(repo.getConfig().getString("a", "config", "option")).isEqualTo("yes");
}
@Test
public void getRef() throws Exception {
ObjectId oldMaster = repo.exactRef(MASTER).getObjectId();
assertThat(repo.exactRef(MASTER).getObjectId()).isEqualTo(oldMaster);
assertThat(repo.exactRef(BRANCH)).isNull();
assertThat(view.getRef(MASTER)).hasValue(oldMaster);
assertThat(view.getRef(BRANCH)).isEmpty();
testRefAction(
() -> {
tr.branch(MASTER).commit().create();
tr.branch(BRANCH).commit().create();
});
assertThat(repo.exactRef(MASTER).getObjectId()).isNotEqualTo(oldMaster);
assertThat(repo.exactRef(BRANCH)).isNotNull();
assertThat(view.getRef(MASTER)).hasValue(oldMaster);
assertThat(view.getRef(BRANCH)).isEmpty();
}
@Test
public void getRefsRescansWhenNotCaching() throws Exception {
ObjectId oldMaster = repo.exactRef(MASTER).getObjectId();
assertThat(view.getRefs(R_HEADS)).containsExactly("master", oldMaster);
ObjectId newBranch = testRefAction(() -> tr.branch(BRANCH).commit().create());
assertThat(view.getRefs(R_HEADS)).containsExactly("master", oldMaster, "branch", newBranch);
}
@Test
public void getRefsUsesCachedValueMatchingGetRef() throws Exception {
ObjectId master1 = repo.exactRef(MASTER).getObjectId();
assertThat(view.getRefs(R_HEADS)).containsExactly("master", master1);
assertThat(view.getRef(MASTER)).hasValue(master1);
// Doesn't reflect new value for master.
ObjectId master2 = testRefAction(() -> tr.branch(MASTER).commit().create());
assertThat(repo.exactRef(MASTER).getObjectId()).isEqualTo(master2);
assertThat(view.getRefs(R_HEADS)).containsExactly("master", master1);
// Branch wasn't previously cached, so does reflect new value.
ObjectId branch1 = testRefAction(() -> tr.branch(BRANCH).commit().create());
assertThat(view.getRefs(R_HEADS)).containsExactly("master", master1, "branch", branch1);
// Looking up branch causes it to be cached.
assertThat(view.getRef(BRANCH)).hasValue(branch1);
ObjectId branch2 = testRefAction(() -> tr.branch(BRANCH).commit().create());
assertThat(repo.exactRef(BRANCH).getObjectId()).isEqualTo(branch2);
assertThat(view.getRefs(R_HEADS)).containsExactly("master", master1, "branch", branch1);
}
@Test
public void getRefsReflectsCommands() throws Exception {
ObjectId master1 = repo.exactRef(MASTER).getObjectId();
assertThat(view.getRefs(R_HEADS)).containsExactly("master", master1);
ObjectId master2 = tr.commit().create();
view.getCommands().add(new ReceiveCommand(master1, master2, MASTER));
assertThat(repo.exactRef(MASTER).getObjectId()).isEqualTo(master1);
assertThat(view.getRef(MASTER)).hasValue(master2);
assertThat(view.getRefs(R_HEADS)).containsExactly("master", master2);
view.getCommands().add(new ReceiveCommand(master2, ObjectId.zeroId(), MASTER));
assertThat(repo.exactRef(MASTER).getObjectId()).isEqualTo(master1);
assertThat(view.getRef(MASTER)).isEmpty();
assertThat(view.getRefs(R_HEADS)).isEmpty();
}
@Test
public void getRefsOverwritesCachedValueWithCommand() throws Exception {
ObjectId master1 = repo.exactRef(MASTER).getObjectId();
assertThat(view.getRef(MASTER)).hasValue(master1);
ObjectId master2 = tr.commit().create();
view.getCommands().add(new ReceiveCommand(master1, master2, MASTER));
assertThat(repo.exactRef(MASTER).getObjectId()).isEqualTo(master1);
assertThat(view.getRef(MASTER)).hasValue(master2);
assertThat(view.getRefs(R_HEADS)).containsExactly("master", master2);
view.getCommands().add(new ReceiveCommand(master2, ObjectId.zeroId(), MASTER));
assertThat(repo.exactRef(MASTER).getObjectId()).isEqualTo(master1);
assertThat(view.getRef(MASTER)).isEmpty();
assertThat(view.getRefs(R_HEADS)).isEmpty();
}
}