/*
 * 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
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package org.apache.shardingsphere.data.pipeline.core.channel.memory;

import org.apache.shardingsphere.data.pipeline.core.channel.PipelineChannel;
import org.apache.shardingsphere.data.pipeline.core.channel.PipelineChannelCreator;
import org.apache.shardingsphere.data.pipeline.core.task.InventoryTaskAckCallback;
import org.apache.shardingsphere.infra.spi.type.typed.TypedSPILoader;
import org.apache.shardingsphere.infra.util.props.PropertiesBuilder;
import org.apache.shardingsphere.infra.util.props.PropertiesBuilder.Property;
import org.junit.jupiter.api.Test;
import org.mockito.internal.configuration.plugins.Plugins;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.atomic.AtomicReference;

import static org.hamcrest.Matchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.isA;

class MemoryPipelineChannelCreatorTest {
    
    @Test
    void assertInitWithNonZeroBlockQueueSize() throws Exception {
        PipelineChannelCreator creator = TypedSPILoader.getService(PipelineChannelCreator.class, "MEMORY", PropertiesBuilder.build(new Property("block-queue-size", "2000")));
        assertThat(Plugins.getMemberAccessor().get(MemoryPipelineChannelCreator.class.getDeclaredField("queueSize"), creator), is(2000));
        PipelineChannel channel = creator.newInstance(1000, new InventoryTaskAckCallback(new AtomicReference<>()));
        assertThat(Plugins.getMemberAccessor().get(MemoryPipelineChannel.class.getDeclaredField("queue"), channel), isA(ArrayBlockingQueue.class));
    }
    
    @Test
    void assertInitWithZeroBlockQueueSize() throws Exception {
        PipelineChannelCreator creator = TypedSPILoader.getService(PipelineChannelCreator.class, "MEMORY", PropertiesBuilder.build(new Property("block-queue-size", "0")));
        assertThat(Plugins.getMemberAccessor().get(MemoryPipelineChannelCreator.class.getDeclaredField("queueSize"), creator), is(0));
        PipelineChannel channel = creator.newInstance(1000, new InventoryTaskAckCallback(new AtomicReference<>()));
        assertThat(Plugins.getMemberAccessor().get(MemoryPipelineChannel.class.getDeclaredField("queue"), channel), isA(SynchronousQueue.class));
    }
    
    @Test
    void assertNewInstanceWithoutBlockQueueSize() throws Exception {
        PipelineChannelCreator creator = TypedSPILoader.getService(PipelineChannelCreator.class, "MEMORY");
        assertThat(Plugins.getMemberAccessor().get(MemoryPipelineChannelCreator.class.getDeclaredField("queueSize"), creator), is(2000));
    }
}
