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package org.eclipse.jgit.api.blame;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.blame.BlameGenerator;
import org.eclipse.jgit.blame.BlameResult;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.revwalk.RevCommit;
import org.junit.Test;
/** Unit tests of {@link BlameGenerator}. */
public class BlameGeneratorTest extends RepositoryTestCase {
@Test
public void testBoundLineDelete() throws Exception {
try (Git git = new Git(db)) {
String[] content1 = new String[] { "first", "second" };
writeTrashFile("file.txt", join(content1));
git.add().addFilepattern("file.txt").call();
RevCommit c1 = git.commit().setMessage("create file").call();
String[] content2 = new String[] { "third", "first", "second" };
writeTrashFile("file.txt", join(content2));
git.add().addFilepattern("file.txt").call();
RevCommit c2 = git.commit().setMessage("create file").call();
try (BlameGenerator generator = new BlameGenerator(db, "file.txt")) {
generator.push(null, db.resolve(Constants.HEAD));
assertEquals(3, generator.getResultContents().size());
assertTrue(generator.next());
assertEquals(c2, generator.getSourceCommit());
assertEquals(1, generator.getRegionLength());
assertEquals(0, generator.getResultStart());
assertEquals(1, generator.getResultEnd());
assertEquals(0, generator.getSourceStart());
assertEquals(1, generator.getSourceEnd());
assertEquals("file.txt", generator.getSourcePath());
assertTrue(generator.next());
assertEquals(c1, generator.getSourceCommit());
assertEquals(2, generator.getRegionLength());
assertEquals(1, generator.getResultStart());
assertEquals(3, generator.getResultEnd());
assertEquals(0, generator.getSourceStart());
assertEquals(2, generator.getSourceEnd());
assertEquals("file.txt", generator.getSourcePath());
assertFalse(generator.next());
}
}
}
@Test
public void testRenamedBoundLineDelete() throws Exception {
try (Git git = new Git(db)) {
final String FILENAME_1 = "subdir/file1.txt";
final String FILENAME_2 = "subdir/file2.txt";
String[] content1 = new String[] { "first", "second" };
writeTrashFile(FILENAME_1, join(content1));
git.add().addFilepattern(FILENAME_1).call();
RevCommit c1 = git.commit().setMessage("create file1").call();
// rename it
writeTrashFile(FILENAME_2, join(content1));
git.add().addFilepattern(FILENAME_2).call();
deleteTrashFile(FILENAME_1);
git.rm().addFilepattern(FILENAME_1).call();
git.commit().setMessage("rename file1.txt to file2.txt").call();
// and change the new file
String[] content2 = new String[] { "third", "first", "second" };
writeTrashFile(FILENAME_2, join(content2));
git.add().addFilepattern(FILENAME_2).call();
RevCommit c2 = git.commit().setMessage("change file2").call();
try (BlameGenerator generator = new BlameGenerator(db, FILENAME_2)) {
generator.push(null, db.resolve(Constants.HEAD));
assertEquals(3, generator.getResultContents().size());
assertTrue(generator.next());
assertEquals(c2, generator.getSourceCommit());
assertEquals(1, generator.getRegionLength());
assertEquals(0, generator.getResultStart());
assertEquals(1, generator.getResultEnd());
assertEquals(0, generator.getSourceStart());
assertEquals(1, generator.getSourceEnd());
assertEquals(FILENAME_2, generator.getSourcePath());
assertTrue(generator.next());
assertEquals(c1, generator.getSourceCommit());
assertEquals(2, generator.getRegionLength());
assertEquals(1, generator.getResultStart());
assertEquals(3, generator.getResultEnd());
assertEquals(0, generator.getSourceStart());
assertEquals(2, generator.getSourceEnd());
assertEquals(FILENAME_1, generator.getSourcePath());
assertFalse(generator.next());
}
// and test again with other BlameGenerator API:
try (BlameGenerator generator = new BlameGenerator(db, FILENAME_2)) {
generator.push(null, db.resolve(Constants.HEAD));
BlameResult result = generator.computeBlameResult();
assertEquals(3, result.getResultContents().size());
assertEquals(c2, result.getSourceCommit(0));
assertEquals(FILENAME_2, result.getSourcePath(0));
assertEquals(c1, result.getSourceCommit(1));
assertEquals(FILENAME_1, result.getSourcePath(1));
assertEquals(c1, result.getSourceCommit(2));
assertEquals(FILENAME_1, result.getSourcePath(2));
}
}
}
@Test
public void testLinesAllDeletedShortenedWalk() throws Exception {
try (Git git = new Git(db)) {
String[] content1 = new String[] { "first", "second", "third" };
writeTrashFile("file.txt", join(content1));
git.add().addFilepattern("file.txt").call();
git.commit().setMessage("create file").call();
String[] content2 = new String[] { "" };
writeTrashFile("file.txt", join(content2));
git.add().addFilepattern("file.txt").call();
git.commit().setMessage("create file").call();
writeTrashFile("file.txt", join(content1));
git.add().addFilepattern("file.txt").call();
RevCommit c3 = git.commit().setMessage("create file").call();
try (BlameGenerator generator = new BlameGenerator(db, "file.txt")) {
generator.push(null, db.resolve(Constants.HEAD));
assertEquals(3, generator.getResultContents().size());
assertTrue(generator.next());
assertEquals(c3, generator.getSourceCommit());
assertEquals(0, generator.getResultStart());
assertEquals(3, generator.getResultEnd());
assertFalse(generator.next());
}
}
}
private static String join(String... lines) {
StringBuilder joined = new StringBuilder();
for (String line : lines)
joined.append(line).append('\n');
return joined.toString();
}
}