/*
 * 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.jdo.tck.extents;

import java.util.Iterator;
import java.util.NoSuchElementException;
import javax.jdo.Extent;
import org.apache.jdo.tck.pc.company.Employee;
import org.apache.jdo.tck.util.BatchTestRunner;

/**
 * <B>Title:</B> Iterator Next After Extent CloseAll <br>
 * <B>Keywords:</B> extent <br>
 * <B>Assertion ID:</B> A15.3-13. <br>
 * <B>Assertion Description: </B> After a call to <code>Extent.closeAll()</code>, all iterators
 * acquired from this <code>Extent</code> will throw a <code>NoSuchElementException</code> to <code>
 * next()</code>.
 */
public class IteratorNextAfterExtentCloseAll extends ExtentTest {

  /** */
  private static final String ASSERTION_FAILED =
      "Assertion A15.3-13 (IteratorNextAfterExtentCloseAll) failed: ";

  /**
   * The <code>main</code> is called when the class is directly executed from the command line.
   *
   * @param args The arguments passed to the program.
   */
  public static void main(String[] args) {
    BatchTestRunner.run(IteratorNextAfterExtentCloseAll.class);
  }

  /** */
  public void test() {

    try {
      beginTransaction();
      Extent<Employee> ex = getPM().getExtent(Employee.class, true);
      Iterator<Employee> it1 = ex.iterator();
      deleteEmployee(it1.next());
      Iterator<Employee> it2 = ex.iterator();
      addEmployee();
      Iterator<Employee> it3 = ex.iterator();
      ex.closeAll();

      if (!tryNext(it1)) {
        fail(ASSERTION_FAILED, "iterator1.next() does not throw NoSuchElementException.");
      }
      if (!tryNext(it2)) {
        fail(ASSERTION_FAILED, "iterator2.next() does not throw NoSuchElementException.");
      }
      if (!tryNext(it3)) {
        fail(ASSERTION_FAILED, "iterator3.next() does not throw NoSuchElementException.");
      }
    } finally {
      rollbackTransaction();
    }
  }

  /** */
  boolean tryNext(Iterator<Employee> it) {
    try {
      it.next();
    } catch (NoSuchElementException expected) {
      return true;
    }
    return false;
  }
}