/*
 * Licensed to Crate.io GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.netty.channel;

import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;

import org.elasticsearch.common.settings.Settings;
import org.junit.Test;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;

public class PipelineRegistryTest {

    private static PipelineRegistry.ChannelPipelineItem channelPipelineItem(String base, String name) {
        return new PipelineRegistry.ChannelPipelineItem(base, name, (f) -> new SimpleChannelInboundHandler() {
            @Override
            protected void channelRead0(ChannelHandlerContext ctx, Object msg) {

            }
        });
    }

    @Test
    public void testAddSortedToPipeline() throws Exception {
        PipelineRegistry pipelineRegistry = new PipelineRegistry(Settings.EMPTY);

        pipelineRegistry.addBefore(channelPipelineItem("c", "d"));
        pipelineRegistry.addBefore(channelPipelineItem("a", "b"));
        pipelineRegistry.addBefore(channelPipelineItem("d", "e"));
        pipelineRegistry.addBefore(channelPipelineItem("b", "c"));

        int size = pipelineRegistry.addBeforeList().size();
        assertThat(size, is(4));

        String[] names = new String[pipelineRegistry.addBeforeList().size()];
        for (int i = 0; i < size; i++) {
            names[i] = pipelineRegistry.addBeforeList().get(i).name;
        }
        assertThat(names, is(new String[]{"b", "c", "d", "e"}));
    }
}
