1 /*
   2  * Copyright (c) 2015, 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 package compiler.compilercontrol.share.pool;
  25 
  26 import jdk.test.lib.util.Pair;
  27 
  28 import java.lang.reflect.Executable;
  29 import java.lang.reflect.Method;
  30 import java.util.ArrayList;
  31 import java.util.List;
  32 import java.util.concurrent.Callable;
  33 
  34 /**
  35  * Represents a holder that contains test methods
  36  */
  37 public abstract class MethodHolder {
  38     /**
  39      * Helper method to get executable for the specified method
  40      *
  41      * @param holder class that holds specified method
  42      * @param name method name
  43      * @param parameterTypes parameter types of the specified method
  44      * @return {@link Method} instance
  45      */
  46     public Method getMethod(MethodHolder holder,
  47                              String name,
  48                              Class<?>... parameterTypes) {
  49         try {
  50             return holder.getClass().getDeclaredMethod(name, parameterTypes);
  51         } catch (NoSuchMethodException e) {
  52             throw new Error("TESTBUG: Can't get method " + name, e);
  53         }
  54     }
  55 
  56     /**
  57      * Gets all test methods
  58      *
  59      * @return pairs of Executable and appropriate Callable
  60      */
  61     public List<Pair<Executable, Callable<?>>> getAllMethods() {
  62         Class<?> aClass = this.getClass();
  63         Object classInstance;
  64         try {
  65             classInstance = aClass.newInstance();
  66         } catch (ReflectiveOperationException e) {
  67             throw new Error("TESTBUG: unable to get new instance", e);
  68         }
  69         List<Pair<Executable, Callable<?>>> pairs = new ArrayList<>();
  70         {
  71             Method method = getMethod(this, "method", int.class, String[].class,
  72                     Integer.class, byte[].class, double[][].class);
  73             Pair<Executable, Callable<?>> pair = new Pair<>(method,
  74                     () -> {
  75                         // Make args
  76                         int a = 0;
  77                         String[] ss = {"a", "b", "c", "d"};
  78                         Integer i = 1;
  79                         byte[] bb = {1, 2};
  80                         double[][] dd = {
  81                                 {1.618033, 3.141592},
  82                                 {2.718281, 0.007874}
  83                         };
  84                         // Invoke method
  85                         method.invoke(classInstance, a, ss, i, bb, dd);
  86                         return true;
  87                     });
  88             pairs.add(pair);
  89         }
  90         {
  91             Method method = getMethod(this, "method");
  92             Pair<Executable, Callable<?>> pair = new Pair<>(method,
  93                     () -> {
  94                         method.invoke(classInstance);
  95                         return true;
  96                     });
  97             pairs.add(pair);
  98         }
  99         {
 100             Method method = getMethod(this, "smethod");
 101             Pair<Executable, Callable<?>> pair = new Pair<>(method,
 102                     () -> method.invoke(classInstance));
 103             pairs.add(pair);
 104         }
 105         {
 106             Method method = getMethod(this, "smethod", int.class, int[].class);
 107             Pair<Executable, Callable<?>> pair = new Pair<>(method,
 108                     () -> {
 109                         int[] array = {1, 2, 3};
 110                         return method.invoke(classInstance, 42, array);
 111                     });
 112             pairs.add(pair);
 113         }
 114         {
 115             Method method = getMethod(this, "smethod", Integer.class);
 116             Pair<Executable, Callable<?>> pair = new Pair<>(method,
 117                     () -> method.invoke(classInstance, 100));
 118             pairs.add(pair);
 119         }
 120         return pairs;
 121     }
 122 }