/*
    * 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.jexl3.internal.introspection;
  
  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.util.ArrayList;
  import java.util.NoSuchElementException;
  
  import org.apache.commons.jexl3.JexlEngine;
  import org.junit.jupiter.api.Test;
  
  /**
   * Checks the CacheMap.MethodKey implementation
   */
  
  public class MiscIntrospectionTest {
      @Test
      public void testArrayIterator() {
          // not on lists
          assertThrows(IllegalArgumentException.class, () -> new ArrayIterator(new ArrayList<>()));
          // wih null ?
          ArrayIterator ai0 = new ArrayIterator(null);
          assertFalse(ai0.hasNext());
          assertThrows(NoSuchElementException.class, ai0::next);
          // an array
          ai0 = new ArrayIterator(new int[] { 42 });
          assertTrue(ai0.hasNext());
          assertEquals(42, ai0.next());
          assertFalse(ai0.hasNext());
          assertThrows(NoSuchElementException.class, ai0::next);
          // no remove
          assertThrows(UnsupportedOperationException.class, ai0::remove);
      }
  
      @Test
      public void testArrayListWrapper() {
          ArrayListWrapper alw;
          assertThrows(IllegalArgumentException.class, () -> new ArrayListWrapper(1));
          final Integer[] ai = { 1, 2 };
          alw = new ArrayListWrapper(ai);
          assertEquals(1, alw.indexOf(2));
          assertEquals(-1, alw.indexOf(null));
      }
  
      @Test
      public void testEmptyContext() {
          assertThrows(UnsupportedOperationException.class, () -> JexlEngine.EMPTY_CONTEXT.set("nope", 42));
      }
  
  }