test/jdk/java/util/Collections/AsLifoQueue.java

*** 1,7 ***
  /*
!  * Copyright (c) 2005, 2014, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ---
  /*
!  * Copyright (c) 2005, 2026, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.

*** 24,12 ***
--- 24,14 ---
  /*
   * @test
   * @bug     6301085 6192552 6365601
   * @summary Basic tests for asLifoQueue
   * @author  Martin Buchholz
+  * @library /test/lib
   */
  
+ import jdk.test.lib.valueclass.VClass;
  import java.util.*;
  import java.util.concurrent.*;
  
  public class AsLifoQueue {
  

*** 70,10 ***
--- 72,21 ---
              check(q.isEmpty());
              equal(q.size(), 0);
          } catch (Throwable t) { unexpected(t); }
  
          THROWS(NullPointerException.class, () -> Collections.asLifoQueue(null));
+ 
+         try {
+             Deque<VClass> deq = new ArrayDeque<>();
+             Queue<VClass> q = Collections.asLifoQueue(deq);
+             check(q.add(new VClass(1, new int[] { 1 })));
+             check(q.add(new VClass(2, new int[] { 2 })));
+             equal(q.peek(), new VClass(2, new int[] { 2 }));
+             equal(q.remove(), new VClass(2, new int[] { 2 }));
+             equal(q.poll(), new VClass(1, new int[] { 1 }));
+             check(q.isEmpty());
+         } catch (Throwable t) { unexpected(t); }
      }
  
      //--------------------- Infrastructure ---------------------------
      static volatile int passed = 0, failed = 0;
      static void pass() {passed++;}