1 /*

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     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

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     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

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    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 /* @test

    27  * @summary BoundMethodHandle tests with primitive types

    28  * @compile MaxTest.java

    29  * @run junit/othervm test.java.lang.invoke.MaxTest

    30  */

    31 

    32 package test.java.lang.invoke;

    33 

    34 import static org.junit.Assert.assertEquals;

    35 

    36 import java.lang.invoke.MethodHandle;

    37 import java.lang.invoke.MethodHandles;

    38 import java.lang.invoke.MethodType;

    39 

    40 import org.junit.Test;

    41 

    42 public class MaxTest {

    43 

    44     static MethodHandles.Lookup LOOKUP = MethodHandles.lookup();

    45 

    46     private MethodHandle getMax(Class<?> t) throws Throwable {

    47         return LOOKUP.findStatic(Math.class, "max", MethodType.methodType(t, t, t));

    48     }

    49 

    50     static int ITERATION_COUNT = 40000;

    51     static {

    52         String iterations = System.getProperty(MaxTest.class.getSimpleName() + ".ITERATION_COUNT");

    53         if (iterations == null) {

    54             iterations = System.getProperty(MaxTest.class.getName() + ".ITERATION_COUNT");

    55         }

    56         if (iterations != null) {

    57             ITERATION_COUNT = Integer.parseInt(iterations);

    58         }

    59     }

    60 

    61     @Test

    62     public void testMaxLong() throws Throwable {

    63         final Class<?> C = long.class;

    64         final long P = 23L;

    65         final long Q = 42L;

    66         final long R = Math.max(P, Q);

    67         for (int i = 0; i < ITERATION_COUNT; ++i) {

    68             MethodHandle h = getMax(C);

    69             assertEquals((long) h.invokeExact(P, Q), R);

    70             MethodHandle bh = MethodHandles.insertArguments(h, 0, P);

    71             assertEquals((long) bh.invokeExact(Q), R);

    72             MethodHandle bbh = MethodHandles.insertArguments(bh, 0, Q);

    73             assertEquals((long) bbh.invokeExact(), R);

    74             MethodHandle b2h = MethodHandles.insertArguments(h, 1, Q);

    75             assertEquals((long) b2h.invokeExact(P), R);

    76             MethodHandle bb2h = MethodHandles.insertArguments(b2h, 0, P);

    77             assertEquals((long) bb2h.invokeExact(), R);

    78         }

    79     }

    80 

    81     @Test

    82     public void testMaxInt() throws Throwable {

    83         final Class<?> C = int.class;

    84         final int P = 23;

    85         final int Q = 42;

    86         final int R = Math.max(P, Q);

    87         for (int i = 0; i < ITERATION_COUNT; ++i) {

    88             MethodHandle h = getMax(C);

    89             assertEquals((int) h.invokeExact(P, Q), R);

    90             MethodHandle bh = MethodHandles.insertArguments(h, 0, P);

    91             assertEquals((int) bh.invokeExact(Q), R);

    92             MethodHandle bbh = MethodHandles.insertArguments(bh, 0, Q);

    93             assertEquals((int) bbh.invokeExact(), R);

    94             MethodHandle b2h = MethodHandles.insertArguments(h, 1, Q);

    95             assertEquals((int) b2h.invokeExact(P), R);

    96             MethodHandle bb2h = MethodHandles.insertArguments(b2h, 0, P);

    97             assertEquals((int) bb2h.invokeExact(), R);

    98         }

    99     }

   100 

   101     @Test

   102     public void testMaxFloat() throws Throwable {

   103         final Class<?> C = float.class;

   104         final float P = 23F;

   105         final float Q = 42F;

   106         final float R = Math.max(P, Q);

   107         final float D = 0.1F;

   108         for (int i = 0; i < ITERATION_COUNT; ++i) {

   109             MethodHandle h = getMax(C);

   110             assertEquals((float) h.invokeExact(P, Q), R, D);

   111             MethodHandle bh = MethodHandles.insertArguments(h, 0, P);

   112             assertEquals((float) bh.invokeExact(Q), R, D);

   113             MethodHandle bbh = MethodHandles.insertArguments(bh, 0, Q);

   114             assertEquals((float) bbh.invokeExact(), R, D);

   115             MethodHandle b2h = MethodHandles.insertArguments(h, 1, Q);

   116             assertEquals((float) b2h.invokeExact(P), R, D);

   117             MethodHandle bb2h = MethodHandles.insertArguments(b2h, 0, P);

   118             assertEquals((float) bb2h.invokeExact(), R, D);

   119         }

   120     }

   121 

   122     @Test

   123     public void testMaxDouble() throws Throwable {

   124         final Class<?> C = double.class;

   125         final double P = 23F;

   126         final double Q = 42F;

   127         final double R = Math.max(P, Q);

   128         final double D = 0.1;

   129         for (int i = 0; i < ITERATION_COUNT; ++i) {

   130             MethodHandle h = getMax(C);

   131             assertEquals((double) h.invokeExact(P, Q), R, D);

   132             MethodHandle bh = MethodHandles.insertArguments(h, 0, P);

   133             assertEquals((double) bh.invokeExact(Q), R, D);

   134             MethodHandle bbh = MethodHandles.insertArguments(bh, 0, Q);

   135             assertEquals((double) bbh.invokeExact(), R, D);

   136             MethodHandle b2h = MethodHandles.insertArguments(h, 1, Q);

   137             assertEquals((double) b2h.invokeExact(P), R, D);

   138             MethodHandle bb2h = MethodHandles.insertArguments(b2h, 0, P);

   139             assertEquals((double) bb2h.invokeExact(), R, D);

   140         }

   141     }

   142 

   143 }