/*
 * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */

package org.opendaylight.netconf.nettyutil;

import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.verify;

import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelPipeline;
import io.netty.util.concurrent.Promise;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import org.opendaylight.netconf.api.NetconfSession;
import org.opendaylight.netconf.codec.FrameDecoder;
import org.opendaylight.netconf.codec.MessageDecoder;
import org.opendaylight.netconf.codec.MessageEncoder;

@ExtendWith(MockitoExtension.class)
class AbstractChannelInitializerTest {

    @Mock
    private Channel channel;
    @Mock
    private ChannelPipeline pipeline;
    @Mock
    private Promise<NetconfSession> sessionPromise;

    @BeforeEach
    void setUp() {
        doReturn(pipeline).when(channel).pipeline();
        doReturn(pipeline).when(pipeline).addLast(anyString(), any(ChannelHandler.class));
    }

    @Test
    void testInit() {
        final TestingInitializer testingInitializer = new TestingInitializer();
        testingInitializer.initialize(channel, sessionPromise);
        verify(pipeline).addLast(anyString(), any(FrameDecoder.class));
        verify(pipeline).addLast(anyString(), any(MessageDecoder.class));
        verify(pipeline).addLast(anyString(), any(MessageEncoder.class));
    }

    private static final class TestingInitializer extends AbstractChannelInitializer<NetconfSession> {

        @Override
        protected void initializeSessionNegotiator(final Channel ch, final Promise<NetconfSession> promise) {
        }
    }

}