package org.codehaus.plexus.util;
   
   /*
    * Copyright The Codehaus Foundation.
    *
    * 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.
   */
  
  import java.util.Vector;
  
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotSame;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assertions.fail;
  
  /**
   * Created on 21/06/2003
   *
   * @author <a href="mailto:bert@tuaworks.co.nz">Bert van Brakel</a>
   * @since 3.4.0
   */
  class SweeperPoolTest {
      /** The pool under test */
      TestObjectPool pool;
  
      /** A bunch of object to pool */
      Object o1;
  
      Object o2;
  
      Object o3;
  
      Object o4;
  
      Object o5;
  
      Object o6;
  
      /**
       * Test the pool limits it's size, and disposes unneeded objects correctly
       */
      @Test
      void maxSize() {
          int sweepInterval = 0;
          int initialCapacity = 5;
          int maxSize = 2;
          int minSize = 1;
          int triggerSize = 2;
  
          pool = new TestObjectPool(maxSize, minSize, initialCapacity, sweepInterval, triggerSize);
  
          Object tmp = pool.get();
          assertNull(tmp, "Expected object from pool to be null");
          pool.put(o1);
          assertEquals(1, pool.getSize(), "Expected pool to contain 1 object");
          tmp = pool.get();
          assertSame(tmp, o1, "Expected returned pool object to be the same as the one put in");
          pool.put(o1);
          pool.put(o2);
          assertEquals(2, pool.getSize(), "Expected pool to contain 2 objects");
          pool.put(o3);
          assertEquals(2, pool.getSize(), "Expected pool to contain only a maximum of 2 objects.");
          assertEquals(1, pool.testGetDisposedObjects().size(), "Expected 1 disposed pool object");
          tmp = pool.testGetDisposedObjects().iterator().next();
  
          tmp = pool.get();
          assertEquals(1, pool.getSize(), "Expected pool size to be 1 after removing one object");
          Object tmp2 = pool.get();
          assertEquals(0, pool.getSize(), "Expected pool size to be 0 after removing 2 objects");
          assertNotSame(tmp, tmp2, "Expected returned objects to be different");
      }
  
      @Test
      void sweepAndTrim1() {
          // test trigger
          int sweepInterval = 1;
          int initialCapacity = 5;
          int maxSize = 5;
          int minSize = 1;
          int triggerSize = 2;
  
          pool = new TestObjectPool(maxSize, minSize, initialCapacity, sweepInterval, triggerSize);
          pool.put(o1);
         pool.put(o2);
         pool.put(o3);
         pool.put(o4);
         // give the sweeper some time to run
         synchronized (this) {
             try {
                 wait(2 * 1000);
             } catch (InterruptedException e) {
                 fail("Unexpected exception thrown. e=" + Tracer.traceToString(e));
             }
         }
         assertEquals(1, pool.getSize(), "Expected pool to only contain 1 object");
         assertEquals(3, pool.testGetDisposedObjects().size(), "Expected 3 disposed objects");
     }
 
     @BeforeEach
     void setUp() {
         o1 = new Object();
         o2 = new Object();
         o3 = new Object();
         o4 = new Object();
         o5 = new Object();
         o6 = new Object();
     }
 
     @AfterEach
     void tearDown() {
         pool.dispose();
         assertTrue(pool.isDisposed());
         pool = null;
     }
 
     static class TestObjectPool extends SweeperPool {
         private Vector<Object> disposedObjects = new Vector<>();
 
         public TestObjectPool(int maxSize, int minSize, int intialCapacity, int sweepInterval, int triggerSize) {
             super(maxSize, minSize, intialCapacity, sweepInterval, triggerSize);
         }
 
         public void reset() {
             disposedObjects.clear();
         }
 
         public void objectDisposed(Object obj) {
             disposedObjects.add(obj);
         }
 
         public Vector<Object> testGetDisposedObjects() {
             return disposedObjects;
         }
     }
 }