1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @run testng/othervm -Xverify:none -XX:+EnableMVT TestValueInValue
  27  */
  28 
  29 import jdk.incubator.mvt.ValueType;
  30 
  31 import java.lang.invoke.MethodHandle;
  32 import java.lang.invoke.MethodHandles;
  33 import java.lang.invoke.MethodType;
  34 
  35 import org.testng.annotations.Test;
  36 
  37 import static org.testng.Assert.assertEquals;
  38 
  39 @Test
  40 public class TestValueInValue {
  41 
  42     static final ValueType<?> VT_OUTER;
  43 
  44     static final ValueType<?> VT_INNER;
  45 
  46     static final Object[] TEST_OBJECTS;
  47 
  48     static {
  49         try {
  50             MethodHandles.Lookup lookup = MethodHandles.lookup();
  51             VT_INNER = ValueType.make(lookup, "Inner", new String[] {"f_i1", "f_i2"}, new Class<?>[] {int.class, String.class});
  52             VT_OUTER = ValueType.make(lookup, "Outer", new String[] {"f_o1", "f_o2"}, new Class<?>[] {VT_INNER.valueClass(), double.class});
  53             MethodHandle c_i = lookup.findConstructor(VT_INNER.boxClass(), MethodType.methodType(void.class, int.class, String.class));
  54             MethodHandle c_o = lookup.findConstructor(VT_OUTER.boxClass(), MethodType.methodType(void.class, VT_INNER.valueClass(), double.class));
  55             TEST_OBJECTS = new Object[] {
  56                     c_o.invoke(c_i.invoke(42, "One"), 42d),
  57                     c_o.invoke(c_i.invoke(42, "Two"), 42d),
  58                     c_o.invoke(c_i.invoke(42, "Three"), 42d),
  59                     c_o.invoke(c_i.invoke(42, "Four"), 42d),
  60             };
  61         } catch (Throwable t) {
  62             throw new AssertionError(t);
  63         }
  64     }
  65 
  66     public void testHashCode() throws Throwable {
  67         for (int i = 0 ; i < TEST_OBJECTS.length ; i++) {
  68             assertEquals((int)VT_OUTER.substitutabilityHashCode().invoke(TEST_OBJECTS[i]), TEST_OBJECTS[i].hashCode());
  69         }
  70     }
  71 
  72     public void testEquals() throws Throwable {
  73         for (int i = 0 ; i < TEST_OBJECTS.length ; i++) {
  74             for (int j = 0 ; j < TEST_OBJECTS.length ; j++) {
  75                 assertEquals((boolean)VT_OUTER.substitutabilityTest().invoke(TEST_OBJECTS[i], TEST_OBJECTS[j]),
  76                                TEST_OBJECTS[i].equals(TEST_OBJECTS[j]));
  77             }
  78         }
  79     }
  80 
  81     public void testArray() throws Throwable {
  82         Object arr = MethodHandles.arrayConstructor(VT_OUTER.arrayValueClass()).invoke(TEST_OBJECTS.length);
  83         int index = 0;
  84         for (Object o : TEST_OBJECTS) {
  85             MethodHandles.arrayElementSetter(VT_OUTER.arrayValueClass()).invoke(arr, index, o);
  86             Object o2 = MethodHandles.arrayElementGetter(VT_OUTER.arrayValueClass()).invoke(arr, index);
  87             assertEquals(o, o2);
  88             index++;
  89         }
  90     }
  91 }