/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.runtime.core.routing.outbound;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;

import org.mule.tck.size.SmallTest;

import java.util.ArrayList;
import java.util.Collection;

import org.junit.Test;

@SmallTest
public class PartitionedMessageSequenceTestCase {

  @Test
  public void wrapCollectionMessageSequence() {
    Collection<String> group1 = new ArrayList<>();
    group1.add("one");
    group1.add("two");
    group1.add("three");
    group1.add("four");

    Collection<String> group2 = new ArrayList<>();
    group2.add("five");
    group2.add("six");
    group2.add("seven");

    Collection<String> base = new ArrayList<>();
    base.addAll(group1);
    base.addAll(group2);

    CollectionMessageSequence<String> cms = new CollectionMessageSequence<>(base);
    int groupSize = group1.size();
    PartitionedMessageSequence<String> pms = new PartitionedMessageSequence<>(cms, groupSize);
    assertThat(pms.size(), is(2));

    Collection<String> batchItem = pms.next();
    assertEquals(groupSize, batchItem.size());
    assertTrue(batchItem.containsAll(group1));

    batchItem = pms.next();
    assertEquals(group2.size(), batchItem.size());
    assertTrue(batchItem.containsAll(group2));

    assertFalse(pms.hasNext());
  }
}