test/jdk/java/util/Collections/NullComparator.java

*** 1,7 ***
  /*
!  * Copyright (c) 1999, 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) 1999, 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.

*** 23,18 ***
--- 23,21 ---
  
  /*
   * @test
   * @bug 4224271
   * @summary A null Comparator is now specified to indicate natural ordering.
+  * @library /test/lib
   */
  
+ import jdk.test.lib.valueclass.VClass;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  
  public class NullComparator {
+ 
      public static void main(String[] args) throws Exception {
          List list = new ArrayList(100);
          for (int i=0; i<100; i++)
              list.add(new Integer(i));
          List sorted = new ArrayList(list);

*** 59,7 ***
--- 62,20 ---
              throw new Exception("Collections.binarySearch");
          if (!Collections.min(list, null).equals(new Integer(0)))
              throw new Exception("Collections.min");
          if (!Collections.max(list, null).equals(new Integer(99)))
              throw new Exception("Collections.max");
+ 
+         List<VClass> vlist = new ArrayList<>();
+         for (int i = 0; i < 100; i++) vlist.add(new VClass(i, new int[] { i }));
+         Collections.shuffle(vlist);
+         Collections.sort(vlist, null);
+         for (int i = 0; i < 100; i++)
+             if (!vlist.get(i).equals(new VClass(i, new int[] { i }))) throw new Exception("value Collections.sort");
+         if (Collections.binarySearch(vlist, new VClass(69, new int[] { 69 }), null) != 69)
+             throw new Exception("value binarySearch");
+         if (!Collections.min(vlist, null).equals(new VClass(0, new int[] { 0 })))
+             throw new Exception("value min");
+         if (!Collections.max(vlist, null).equals(new VClass(99, new int[] { 99 })))
+             throw new Exception("value max");
      }
  }