/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.cassandra.transport;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.apache.cassandra.transport.messages.ErrorMessage;
import org.junit.Assert;
import org.junit.Test;

import java.util.ArrayList;
import java.util.List;

public class ProtocolErrorTest {

    @Test
    public void testInvalidDirection() throws Exception
    {
        Frame.Decoder dec = new Frame.Decoder(null);

        List<Object> results = new ArrayList<>();
        // should generate a protocol exception for using a response frame with
        // a prepare op, ensure that it comes back with stream ID 1
        byte[] frame = new byte[] {
                (byte) 0x82,  // direction & version
                0x00,  // flags
                0x01,  // stream ID
                0x09,  // opcode
                0x00, 0x00, 0x00, 0x21,  // body length
                0x00, 0x00, 0x00, 0x1b, 0x00, 0x1b, 0x53, 0x45,
                0x4c, 0x45, 0x43, 0x54, 0x20, 0x2a, 0x20, 0x46,
                0x52, 0x4f, 0x4d, 0x20, 0x73, 0x79, 0x73, 0x74,
                0x65, 0x6d, 0x2e, 0x6c, 0x6f, 0x63, 0x61, 0x6c,
                0x3b
        };
        ByteBuf buf = Unpooled.wrappedBuffer(frame);
        try {
            dec.decode(null, buf, results);
        } catch (ErrorMessage.WrappedException e) {
            // make sure the exception has the correct stream ID
            Assert.assertEquals(1, e.getStreamId());
        }
    }

    @Test
    public void testNegativeBodyLength() throws Exception
    {
        Frame.Decoder dec = new Frame.Decoder(null);

        List<Object> results = new ArrayList<>();
        byte[] frame = new byte[] {
                (byte) 0x82,  // direction & version
                0x00,  // flags
                0x01,  // stream ID
                0x09,  // opcode
                (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,  // body length (-1)
        };
        ByteBuf buf = Unpooled.wrappedBuffer(frame);
        try {
            dec.decode(null, buf, results);
        } catch (ErrorMessage.WrappedException e) {
            // make sure the exception has the correct stream ID
            Assert.assertEquals(1, e.getStreamId());
        }
    }

    @Test
    public void testBodyLengthOverLimit() throws Exception
    {
        Frame.Decoder dec = new Frame.Decoder(null);

        List<Object> results = new ArrayList<>();
        byte[] frame = new byte[] {
                (byte) 0x82,  // direction & version
                0x00,  // flags
                0x01,  // stream ID
                0x09,  // opcode
                0x7f, (byte) 0xff, (byte) 0xff, (byte) 0xff,  // body length
        };
        ByteBuf buf = Unpooled.wrappedBuffer(frame);
        try {
            dec.decode(null, buf, results);
        } catch (ErrorMessage.WrappedException e) {
            // make sure the exception has the correct stream ID
            Assert.assertEquals(1, e.getStreamId());
        }
    }
}