/*
    * 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.commons.io;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.Iterator;
  import java.util.concurrent.atomic.AtomicBoolean;
  import java.util.concurrent.atomic.AtomicInteger;
  import java.util.stream.Stream;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link StreamIterator}.
   */
  public class StreamIteratorTest {
  
      @Test
      public void testForEachRemaining() {
          final AtomicBoolean closed = new AtomicBoolean();
          final Iterator<Integer> iter = StreamIterator.iterator(Stream.of(1, 2, 3).onClose(() -> closed.set(true)));
          final AtomicInteger sum = new AtomicInteger();
  
          iter.forEachRemaining(sum::addAndGet);
  
          assertEquals(6, sum.get());
          assertTrue(closed.get());
      }
  
      @Test
      public void testHasNext() {
          final AtomicBoolean closed = new AtomicBoolean();
          final Iterator<Integer> iter = StreamIterator.iterator(Stream.of(1, 2, 3).onClose(() -> closed.set(true)));
          int sum = 0;
  
          while (iter.hasNext()) {
              sum += iter.next();
          }
  
          assertEquals(6, sum);
          assertTrue(closed.get());
      }
  }