/*
    * 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.flatfile;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  import org.junit.Test;
  
  public class EntityArrayLifecycleTest extends EntityParserTestBase {
  
      @Test
      public void testMe() throws Exception {
          EntityArray e = (EntityArray) entityFactory.getEntity("hypo");
          try {
              e.getValue();
              fail("should fail");
          } catch (IllegalStateException ise) {
              // okay
          }
          assertTrue(e.isSizable());
          e.setSize(5);
          e.fill((byte) 'a');
          assertValue("aaaaaaaaaa", e);
          e = (EntityArray) entityFactory.getEntity("hypo");
          assertTrue(e.isSizable());
          e.setSize(2);
          e.fill((byte) 'b');
          assertValue("bbbb", e);
          e = (EntityArray) entityFactory.getEntity("complete");
          assertFalse(e.isSizable());
          expectInvalidSize(e, e.size() + 1,
                  "should fail to set size of completed entity",
                  IllegalStateException.class);
          e.setSize(e.size());
          e = (EntityArray) entityFactory.getEntity("rangeMin1");
          assertTrue(e.isSizable());
          expectInvalidSize(e, 0, "should fail to set size < 1",
                  IllegalArgumentException.class);
          e.setSize(665);
          assertEquals(665, e.size());
          e = (EntityArray) entityFactory.getEntity("explicitRange");
          expectInvalidSize(e, 0, "should fail to set size < 1",
                  IllegalArgumentException.class);
          expectInvalidSize(e, 4, "should fail to set size > 4",
                  IllegalArgumentException.class);
          e.setSize(3);
          assertEquals(3, e.size());
          e = (EntityArray) entityFactory.getEntity("optional");
          assertEquals(0, e.getMinimumSize());
          assertEquals(1, e.getMaximumSize());
          e.setSize(0);
          assertEquals(0, e.size());
          assertEquals(0, e.getValue().length);
          e = (EntityArray) entityFactory.getEntity("optional2");
          assertEquals(0, e.getMinimumSize());
          assertEquals(1, e.getMaximumSize());
          e.setSize(0);
          assertEquals(0, e.size());
          assertEquals(0, e.getValue().length);
      }
  
      private void expectInvalidSize(EntityArray e, int size,
              String failureMessage, Class<? extends Exception> exceptionType) {
          try {
              e.setSize(size);
              fail(failureMessage);
          } catch (Exception exc) {
              assertTrue("Unexpected exception " + exc, exceptionType == null
                      || exceptionType.isInstance(exc));
          }
      }
  
      protected String getSource() {
          return "entityarraylifecycle.test";
      }
  }