content: /*
   * Copyright 2015, 2024 StreamEx contributors
   *
   * 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
   *
   *     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 one.util.streamex;
  
  import one.util.streamex.Internals.PairBox;
  import org.junit.Test;
  
  import java.util.*;
  import java.util.function.Consumer;
  
  import static one.util.streamex.Internals.ArrayCollection;
  import static one.util.streamex.Internals.PartialCollector;
  import static org.junit.Assert.*;
  
  /**
   * Tests for non-public APIs in StreamExInternals
   * 
   * @author Tagir Valeev
   */
  public class InternalsTest {
      @Test
      public void testArrayCollection() {
          Collection<Object> collection = new ArrayCollection(new Object[] { "1", "2" });
          List<Object> list = new LinkedList<>(collection);
          assertEquals("1", list.get(0));
          assertEquals("2", list.get(1));
          List<Object> list2 = new ArrayList<>(collection);
          assertEquals("1", list.get(0));
          assertEquals("2", list.get(1));
          assertEquals(list2, list);
          Set<Object> set = new HashSet<>(collection);
          assertTrue(set.contains("1"));
          assertTrue(set.contains("2"));
          assertEquals(2, set.size());
      }
  
      @Test(expected = UnsupportedOperationException.class)
      public void testPartialCollector() {
          PartialCollector.intSum().accumulator();
      }
      
      @SuppressWarnings({"SimplifiableAssertion", "EqualsBetweenInconvertibleTypes"})
      @Test
      public void testPairBoxEquals() {
          PairBox<Integer, Integer> boxOneTwo = new PairBox<>(1, 2);
          PairBox<Integer, Integer> boxTwoTwo = new PairBox<>(2, 2);
          PairBox<Integer, Integer> boxTwoOne = new PairBox<>(2, 1);
          PairBox<Integer, Integer> boxOneOne = new PairBox<>(1, 1);
          assertFalse(boxOneOne.equals(null));
          assertFalse(boxOneOne.equals(""));
          assertEquals(boxOneTwo, boxTwoTwo);
          assertNotEquals(boxOneTwo, boxTwoOne);
          assertNotEquals(boxOneTwo, boxOneOne);
          assertEquals(boxTwoOne, boxOneOne);
      }
      
      @Test
      public void testCloneableSpliterator() {
          class Splt extends Internals.CloneableSpliterator<Object, Splt> {
              @Override
              protected Object clone() throws CloneNotSupportedException {
                  throw new CloneNotSupportedException();
              }
  
              @Override public boolean tryAdvance(Consumer<? super Object> action) { return false; }
              @Override public Spliterator<Object> trySplit() { return null; }
              @Override public long estimateSize() { return 0; }
              @Override public int characteristics() { return 0; }
          }
          Splt splt = new Splt();
          assertThrows(InternalError.class, splt::doClone);
      }
  }
  