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/*
* SonarQube
* Copyright (C) 2009-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.scm.git;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
import org.apache.commons.io.FileUtils;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.lib.Repository;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.sonar.api.batch.scm.BlameLine;
import org.sonar.api.utils.DateUtils;
import org.sonar.api.utils.System2;
import org.sonar.api.testfixtures.log.LogTester;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assume.assumeTrue;
import static org.sonar.scm.git.Utils.javaUnzip;
public class JGitBlameCommandTest {
private static final String DUMMY_JAVA = "src/main/java/org/dummy/Dummy.java";
@Rule
public TemporaryFolder temp = new TemporaryFolder();
@Rule
public LogTester logTester = new LogTester();
private final JGitBlameCommand jGitBlameCommand = new JGitBlameCommand();
private Path baseDir;
@Before
public void before() throws IOException {
File projectDir = createNewTempFolder();
javaUnzip("dummy-git.zip", projectDir);
baseDir = projectDir.toPath().resolve("dummy-git");
}
@Test
public void blame_returns_all_lines() {
try (Git git = loadRepository(baseDir)) {
List<BlameLine> blameLines = jGitBlameCommand.blame(git, DUMMY_JAVA);
Date revisionDate1 = DateUtils.parseDateTime("2012-07-17T16:12:48+0200");
String revision1 = "6b3aab35a3ea32c1636fee56f996e677653c48ea";
String author1 = "david@gageot.net";
// second commit, which has a commit date different than the author date
Date revisionDate2 = DateUtils.parseDateTime("2015-05-19T13:31:09+0200");
String revision2 = "0d269c1acfb8e6d4d33f3c43041eb87e0df0f5e7";
String author2 = "duarte.meneses@sonarsource.com";
List<BlameLine> expectedBlame = new LinkedList<>();
for (int i = 0; i < 25; i++) {
expectedBlame.add(new BlameLine().revision(revision1).date(revisionDate1).author(author1));
}
for (int i = 0; i < 3; i++) {
expectedBlame.add(new BlameLine().revision(revision2).date(revisionDate2).author(author2));
}
for (int i = 0; i < 1; i++) {
expectedBlame.add(new BlameLine().revision(revision1).date(revisionDate1).author(author1));
}
assertThat(blameLines).isEqualTo(expectedBlame);
}
}
@Test
public void modified_file_returns_no_blame() throws IOException {
// Emulate a modification
Files.write(baseDir.resolve(DUMMY_JAVA), "modification and \n some new line".getBytes());
try (Git git = loadRepository(baseDir)) {
assertThat(jGitBlameCommand.blame(git, DUMMY_JAVA)).isEmpty();
}
}
@Test
public void new_file_returns_no_blame() throws IOException {
String relativePath2 = "src/main/java/org/dummy/Dummy2.java";
// Emulate a new file
FileUtils.copyFile(new File(baseDir.toFile(), DUMMY_JAVA), new File(baseDir.toFile(), relativePath2));
try (Git git = loadRepository(baseDir)) {
assertThat(jGitBlameCommand.blame(git, DUMMY_JAVA)).hasSize(29);
assertThat(jGitBlameCommand.blame(git, relativePath2)).isEmpty();
}
}
@Test
public void symlink_doesnt_fail() throws IOException {
assumeTrue(!System2.INSTANCE.isOsWindows());
String relativePath2 = "src/main/java/org/dummy/Dummy2.java";
// Create symlink
Files.createSymbolicLink(baseDir.resolve(relativePath2), baseDir.resolve(DUMMY_JAVA));
try (Git git = loadRepository(baseDir)) {
jGitBlameCommand.blame(git, DUMMY_JAVA);
jGitBlameCommand.blame(git, relativePath2);
}
}
private Git loadRepository(Path dir) {
Repository repo = JGitUtils.buildRepository(dir);
return Git.wrap(repo);
}
private File createNewTempFolder() throws IOException {
//This is needed for Windows, otherwise the created File point to invalid (shortened by Windows) temp folder path
return temp.newFolder().toPath().toRealPath(LinkOption.NOFOLLOW_LINKS).toFile();
}
}
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