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    1   /**
    2    * Copyright (c) 2008-2011, http://www.snakeyaml.org
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *     http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16
    17  package org.yaml.snakeyaml.representer;
    18
    19  import java.util.Iterator;
    20
    21  import junit.framework.TestCase;
    22
    23  import org.yaml.snakeyaml.Yaml;
    24
    25  /**
    26   * Test {@link issue69 http://code.google.com/p/snakeyaml/issues/detail?id=69}
    27   */
    28  public class RepresentIterableTest extends TestCase {
    29
    30      public void testIterable() {
    31          Yaml yaml = new Yaml();
    32          try {
    33              yaml.dump(new CounterFactory());
    34              fail("Iterable should not be treated as sequence by default.");
    35          } catch (Exception e) {
    36              assertEquals(
    37                      "No JavaBean properties found in org.yaml.snakeyaml.representer.RepresentIterableTest$CounterFactory",
    38                      e.getMessage());
    39          }
    40      }
    41
    42      public void testIterator() {
    43          Yaml yaml = new Yaml();
    44          String output = yaml.dump(new Counter(7));
    45          assertEquals("[0, 1, 2, 3, 4, 5, 6]\n", output);
    46      }
    47
    48      private class CounterFactory implements Iterable<Integer> {
    49          public Iterator<Integer> iterator() {
    50              return new Counter(10);
    51          }
    52      }
    53
    54      private class Counter implements Iterator<Integer> {
    55          private int max = 0;
    56          private int counter = 0;
    57
    58          public Counter(int max) {
    59              this.max = max;
    60          }
    61
    62          public boolean hasNext() {
    63              return counter < max;
    64          }
    65
    66          public Integer next() {
    67              return counter++;
    68          }
    69
    70          public void remove() {
    71              throw new UnsupportedOperationException();
    72          }
    73      }
    74  }