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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jrt;
import java.nio.ByteBuffer;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class PacketTest {
@org.junit.Test
public void testRequestPacket() {
Values params = new Values();
params.add(new Int32Value(123));
Packet packet = new RequestPacket(Packet.FLAG_NOREPLY, 42,
"foobar", params);
PacketInfo info = packet.getPacketInfo();
ByteBuffer buf = ByteBuffer.allocate(info.packetLength());
info.encodePacket(packet, buf);
buf.flip();
int bytes = 12 + 4 + 6 + params.bytes();
ByteBuffer ref = ByteBuffer.allocate(bytes);
ref.putInt(bytes - 4); // plen
ref.putShort((short)2); // flags (no reply)
ref.putShort((short)100); // pcode (request)
ref.putInt(42); // reqId
ref.putInt(6); // method name length
ref.put((byte)'f').put((byte)'o').put((byte)'o')
.put((byte)'b').put((byte)'a').put((byte)'r');
params.encode(ref);
assertEquals(0, ref.remaining());
ref.flip();
assertTrue(buf.equals(ref));
PacketInfo info2 = PacketInfo.getPacketInfo(buf);
assertTrue(info2 != null);
assertEquals(info2.packetLength(), buf.remaining());
Packet packet2 = info2.decodePacket(buf);
assertEquals(0, buf.remaining());
assertEquals(packet2.requestId(), 42);
assertEquals(((RequestPacket)packet2).methodName(), "foobar");
Values params2 = ((RequestPacket)packet2).parameters();
assertEquals(params2.size(), 1);
assertEquals(params2.get(0).type(), Value.INT32);
assertEquals(params2.get(0).asInt32(), 123);
}
@org.junit.Test
public void testReplyPacket() {
Values ret = new Values();
ret.add(new Int32Value(123));
Packet packet = new ReplyPacket(0, 42, ret);
PacketInfo info = packet.getPacketInfo();
ByteBuffer buf = ByteBuffer.allocate(info.packetLength());
info.encodePacket(packet, buf);
buf.flip();
int bytes = 12 + ret.bytes();
ByteBuffer ref = ByteBuffer.allocate(bytes);
ref.putInt(bytes - 4); // plen
ref.putShort((short)0); // flags
ref.putShort((short)101); // pcode (reply)
ref.putInt(42); // reqId
ret.encode(ref);
assertEquals(0, ref.remaining());
ref.flip();
assertTrue(buf.equals(ref));
PacketInfo info2 = PacketInfo.getPacketInfo(buf);
assertTrue(info2 != null);
assertEquals(info2.packetLength(), buf.remaining());
Packet packet2 = info2.decodePacket(buf);
assertEquals(0, buf.remaining());
assertEquals(packet2.requestId(), 42);
Values ret2 = ((ReplyPacket)packet2).returnValues();
assertEquals(ret2.size(), 1);
assertEquals(ret2.get(0).type(), Value.INT32);
assertEquals(ret2.get(0).asInt32(), 123);
}
@org.junit.Test
public void testErrorPacket() {
String errStr = "NSM";
Packet packet =
new ErrorPacket(0, 42, ErrorCode.NO_SUCH_METHOD, errStr);
PacketInfo info = packet.getPacketInfo();
ByteBuffer buf = ByteBuffer.allocate(info.packetLength());
info.encodePacket(packet, buf);
buf.flip();
int bytes = 12 + 4 + 4 + 3;
ByteBuffer ref = ByteBuffer.allocate(bytes);
ref.putInt(bytes - 4); // plen
ref.putShort((short)0); // flags
ref.putShort((short)102); // pcode (error)
ref.putInt(42); // reqId
ref.putInt(ErrorCode.NO_SUCH_METHOD);
ref.putInt(3); // length of errorMessage
ref.put((byte)'N').put((byte)'S').put((byte)'M');
assertEquals(0, ref.remaining());
ref.flip();
assertTrue(buf.equals(ref));
PacketInfo info2 = PacketInfo.getPacketInfo(buf);
assertTrue(info2 != null);
assertEquals(info2.packetLength(), buf.remaining());
Packet packet2 = info2.decodePacket(buf);
assertEquals(0, buf.remaining());
assertEquals(packet2.requestId(), 42);
assertEquals(ErrorCode.NO_SUCH_METHOD,
((ErrorPacket)packet2).errorCode());
assertEquals(errStr, ((ErrorPacket)packet2).errorMessage());
}
}
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