content: /*
   * 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 com.aliyun.odps;
  
  import static org.junit.Assert.assertTrue;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  import org.junit.Test;
  
  public class ListIteratorTest {
  
    public Iterator<String> getList() {
      return new ListIterator<String>() {
        private int step = 0;
  
        @Override
        protected List<String> list() {
          ++step;
          if (step == 1) {
            return new ArrayList<String>();
          } else if (step == 2) {
            ArrayList<String> list = new ArrayList<String>();
            list.add("not empty");
            return list;
          } else {
            return null;
          }
        }
      };
    }
  
    @Test
    public void testList() throws OdpsException {
      Iterator<String> list = getList();
      assertTrue(list.hasNext());
    }
  
    @Test
    public void testNextFirst() throws OdpsException {
      Iterator<String> list = getList();
      assertTrue("not empty".equals(list.next()));
    }
  }
  