/*
 * 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 javax.jdo.Extent;
import org.apache.jdo.tck.util.BatchTestRunner;

/**
 * <B>Title:</B> Iterator Mutating Methods <br>
 * <B>Keywords:</B> extent exception <br>
 * <B>Assertion ID:</B> A15.3-4. <br>
 * <B>Assertion Description: </B> If any mutating method, including the <code>remove</code> method,
 * is called on the <code>Iterator</code> returned by <code>Extent.iterator()</code>, an <code>
 * UnsupportedOperationException</code> is thrown.
 */
public class IteratorMutatingMethods extends ExtentTest {

  /** */
  private static final String ASSERTION_FAILED =
      "Assertion A15.3-4 (IteratorMutatingMethods) 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(IteratorMutatingMethods.class);
  }

  /** */
  public void test() {
    beginTransaction();
    Extent<?> ex = getExtent();
    Iterator<?> it = ex.iterator();
    it.next();
    try {
      it.remove();
      fail(
          ASSERTION_FAILED,
          "extent.iterator().remove() should throw UnsupportedOperationException");
    } catch (UnsupportedOperationException expected) {
      // expected exception
      if (debug) logger.debug("expected exception " + ex);
    }
    commitTransaction();
  }
}