content: /*
   * Copyright 2014-2025 Real Logic Limited.
   *
   * Licensed 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.agrona.collections;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  
  class ArrayUtilTest
  {
      // Reference Equality
      private static final Integer ONE = 1;
      private static final Integer TWO = 2;
      private static final Integer THREE = 3;
  
      private final Integer[] values = { ONE, TWO };
  
      @Test
      void shouldNotRemoveMissingElement()
      {
          final Integer[] result = ArrayUtil.remove(values, THREE);
  
          assertArrayEquals(values, result);
      }
  
      @Test
      void shouldRemovePresentElementAtEnd()
      {
          final Integer[] result = ArrayUtil.remove(values, TWO);
  
          assertArrayEquals(new Integer[]{ ONE }, result);
      }
  
      @Test
      void shouldRemovePresentElementAtStart()
      {
          final Integer[] result = ArrayUtil.remove(values, ONE);
  
          assertArrayEquals(new Integer[]{ TWO }, result);
      }
  
      @Test
      void shouldRemoveByIndex()
      {
          final Integer[] result = ArrayUtil.remove(values, 0);
  
          assertArrayEquals(new Integer[]{ TWO }, result);
      }
  }
  