/*
    * 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
    *
    *      https://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.lang3;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InvalidObjectException;
  import java.io.ObjectInputStream;
  
  import org.apache.commons.lang3.reflect.FieldUtils;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests that a serialized {@link CharRange} can't carry an inverted ({@code start > end}) range.
   */
  class CharRangeReadObjectTest {
  
      private static Object deserialize(final byte[] bytes) throws IOException, ClassNotFoundException {
          try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bytes))) {
              return ois.readObject();
          }
      }
  
      @Test
      void testForgedInvertedRangeIsRejected() throws Exception {
          // Negative control: the factory reverses reversed endpoints, so no inverted range can be built directly.
          assertEquals(CharRange.isIn('a', 'e'), CharRange.isIn('e', 'a'));
          final CharRange seed = CharRange.isIn('a', 'e');
          FieldUtils.writeDeclaredField(seed, "start", 'z', true);
          FieldUtils.writeDeclaredField(seed, "end", 'a', true);
          assertThrows(InvalidObjectException.class, () -> deserialize(SerializationUtils.serialize(seed)));
          assertThrows(SerializationException.class, () -> SerializationUtils.roundtrip(seed));
      }
  
      @Test
      void testRoundTripPreservesRange() throws Exception {
          final CharRange range = CharRange.isIn('a', 'e');
          final CharRange roundtrip = SerializationUtils.roundtrip(range);
          assertEquals(range, roundtrip);
          assertTrue(roundtrip.contains('c'));
          assertFalse(roundtrip.contains('z'));
      }
  }