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package org.eclipse.jgit.diff;
import org.eclipse.jgit.diff.DiffEntry.ChangeType;
import org.eclipse.jgit.junit.TestRepository;
import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.RepositoryTestCase;
import org.eclipse.jgit.patch.FileHeader;
import org.eclipse.jgit.patch.HunkHeader;
import org.eclipse.jgit.util.RawParseUtils;
import org.eclipse.jgit.util.io.DisabledOutputStream;
public class DiffFormatterTest extends RepositoryTestCase {
private static final String DIFF = "diff --git ";
private static final String REGULAR_FILE = "100644";
private static final String GITLINK = "160000";
private static final String PATH_A = "src/a";
private static final String PATH_B = "src/b";
private DiffFormatter df;
private TestRepository testDb;
@Override
public void setUp() throws Exception {
super.setUp();
testDb = new TestRepository(db);
df = new DiffFormatter(DisabledOutputStream.INSTANCE);
df.setRepository(db);
}
public void testCreateFileHeader_Modify() throws Exception {
ObjectId adId = blob("a\nd\n");
ObjectId abcdId = blob("a\nb\nc\nd\n");
String diffHeader = makeDiffHeader(PATH_A, PATH_A, adId, abcdId);
DiffEntry ad = DiffEntry.delete(PATH_A, adId);
DiffEntry abcd = DiffEntry.add(PATH_A, abcdId);
DiffEntry mod = DiffEntry.pair(ChangeType.MODIFY, ad, abcd, 0);
FileHeader fh = df.createFileHeader(mod);
assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
assertEquals(0, fh.getStartOffset());
assertEquals(fh.getBuffer().length, fh.getEndOffset());
assertEquals(FileHeader.PatchType.UNIFIED, fh.getPatchType());
assertEquals(1, fh.getHunks().size());
HunkHeader hh = fh.getHunks().get(0);
assertEquals(1, hh.toEditList().size());
EditList el = hh.toEditList();
assertEquals(1, el.size());
Edit e = el.get(0);
assertEquals(1, e.getBeginA());
assertEquals(1, e.getEndA());
assertEquals(1, e.getBeginB());
assertEquals(3, e.getEndB());
assertEquals(Edit.Type.INSERT, e.getType());
}
public void testCreateFileHeader_Binary() throws Exception {
ObjectId adId = blob("a\nd\n");
ObjectId binId = blob("a\nb\nc\n\0\0\0\0d\n");
String diffHeader = makeDiffHeader(PATH_A, PATH_B, adId, binId)
+ "Binary files differ\n";
DiffEntry ad = DiffEntry.delete(PATH_A, adId);
DiffEntry abcd = DiffEntry.add(PATH_B, binId);
DiffEntry mod = DiffEntry.pair(ChangeType.MODIFY, ad, abcd, 0);
FileHeader fh = df.createFileHeader(mod);
assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
assertEquals(FileHeader.PatchType.BINARY, fh.getPatchType());
assertEquals(1, fh.getHunks().size());
HunkHeader hh = fh.getHunks().get(0);
assertEquals(0, hh.toEditList().size());
}
public void testCreateFileHeader_GitLink() throws Exception {
ObjectId aId = blob("a\n");
ObjectId bId = blob("b\n");
String diffHeader = makeDiffHeaderModeChange(PATH_A, PATH_A, aId, bId,
GITLINK, REGULAR_FILE)
+ "-Subproject commit " + aId.name() + "\n";
DiffEntry ad = DiffEntry.delete(PATH_A, aId);
ad.oldMode = FileMode.GITLINK;
DiffEntry abcd = DiffEntry.add(PATH_A, bId);
DiffEntry mod = DiffEntry.pair(ChangeType.MODIFY, ad, abcd, 0);
FileHeader fh = df.createFileHeader(mod);
assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
assertEquals(1, fh.getHunks().size());
HunkHeader hh = fh.getHunks().get(0);
assertEquals(0, hh.toEditList().size());
}
private String makeDiffHeader(String pathA, String pathB, ObjectId aId,
ObjectId bId) {
String a = aId.abbreviate(db).name();
String b = bId.abbreviate(db).name();
return DIFF + "a/" + pathA + " " + "b/" + pathB + "\n" + //
"index " + a + ".." + b + " " + REGULAR_FILE + "\n" + //
"--- a/" + pathA + "\n" + //
"+++ b/" + pathB + "\n";
}
private String makeDiffHeaderModeChange(String pathA, String pathB,
ObjectId aId, ObjectId bId, String modeA, String modeB) {
String a = aId.abbreviate(db).name();
String b = bId.abbreviate(db).name();
return DIFF + "a/" + pathA + " " + "b/" + pathB + "\n" + //
"old mode " + modeA + "\n" + //
"new mode " + modeB + "\n" + //
"index " + a + ".." + b + "\n" + //
"--- a/" + pathA + "\n" + //
"+++ b/" + pathB + "\n";
}
private ObjectId blob(String content) throws Exception {
return testDb.blob(content).copy();
}
}