@Test
public void testUsingHiddenDeltaBaseFails() throws Exception {
byte[] delta = {0x1, 0x1, 0x1, 'c'};
TestRepository<Repository> s = new TestRepository<Repository>(src);
RevCommit N =
s.commit()
.parent(B)
.add("q", s.blob(BinaryDelta.apply(dst.open(b).getCachedBytes(), delta)))
.create();
final TemporaryBuffer.Heap pack = new TemporaryBuffer.Heap(1024);
packHeader(pack, 3);
copy(pack, src.open(N));
copy(pack, src.open(s.parseBody(N).getTree()));
pack.write((Constants.OBJ_REF_DELTA) << 4 | 4);
b.copyRawTo(pack);
deflate(pack, delta);
digest(pack);
final TemporaryBuffer.Heap inBuf = new TemporaryBuffer.Heap(1024);
final PacketLineOut inPckLine = new PacketLineOut(inBuf);
inPckLine.writeString(
ObjectId.zeroId().name()
+ ' '
+ N.name()
+ ' '
+ "refs/heads/s"
+ '\0'
+ BasePackPushConnection.CAPABILITY_REPORT_STATUS);
inPckLine.end();
pack.writeTo(inBuf, PM);
final TemporaryBuffer.Heap outBuf = new TemporaryBuffer.Heap(1024);
final ReceivePack rp = new ReceivePack(dst);
rp.setCheckReceivedObjects(true);
rp.setCheckReferencedObjectsAreReachable(true);
rp.setAdvertiseRefsHook(new HidePrivateHook());
try {
receive(rp, inBuf, outBuf);
fail("Expected UnpackException");
} catch (UnpackException failed) {
Throwable err = failed.getCause();
assertTrue(err instanceof MissingObjectException);
MissingObjectException moe = (MissingObjectException) err;
assertEquals(b, moe.getObjectId());
}
final PacketLineIn r = asPacketLineIn(outBuf);
String master = r.readString();
int nul = master.indexOf('\0');
assertTrue("has capability list", nul > 0);
assertEquals(B.name() + ' ' + R_MASTER, master.substring(0, nul));
assertSame(PacketLineIn.END, r.readString());
assertEquals("unpack error Missing blob " + b.name(), r.readString());
assertEquals("ng refs/heads/s n/a (unpacker error)", r.readString());
assertSame(PacketLineIn.END, r.readString());
}
@Override
protected void run() throws Exception {
ObjectReader reader = db.newObjectReader();
RevObject obj = new RevWalk(reader).parseAny(objectId);
byte[] delta = getDelta(reader, obj);
// We're crossing our fingers that this will be a delta. Double
// check the size field in the header, it should match.
//
long size = reader.getObjectSize(obj, obj.getType());
try {
if (BinaryDelta.getResultSize(delta) != size)
throw die("Object " + obj.name() + " is not a delta");
} catch (ArrayIndexOutOfBoundsException bad) {
throw die("Object " + obj.name() + " is not a delta");
}
outw.println(BinaryDelta.format(delta));
}