rev 7590 : 8068183: Add isTieredSupported method to c.o.j.t.Platforms
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   1 /*
   2  * Copyright (c) 2014, 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 import com.oracle.java.testlibrary.Asserts;
  25 import com.oracle.java.testlibrary.Platform;
  26 
  27 import java.lang.reflect.InvocationTargetException;
  28 import java.lang.reflect.Method;
  29 import java.util.Arrays;
  30 import java.util.Collections;
  31 import java.util.EnumSet;
  32 import java.util.HashSet;
  33 import java.util.List;
  34 import java.util.Set;
  35 
  36 /**
  37  * @test
  38  * @summary Verify that for each group of mutually exclusive predicates defined
  39  *          in com.oracle.java.testlibrary.Platform one and only one predicate
  40  *          evaluates to true.
  41  * @library /testlibrary
  42  * @run main TestMutuallyExclusivePlatformPredicates
  43  */
  44 public class TestMutuallyExclusivePlatformPredicates {
  45     private static enum MethodGroup {
  46         ARCH("isARM", "isPPC", "isSparc", "isX86", "isX64"),
  47         BITNESS("is32bit", "is64bit"),
  48         OS("isLinux", "isSolaris", "isWindows", "isOSX"),
  49         VM_TYPE("isClient", "isServer", "isGraal", "isMinimal"),
  50         IGNORED("isEmbedded", "isDebugBuild", "shouldSAAttach",
  51                 "canPtraceAttachLinux", "canAttachOSX", "isTieredSupported");
  52 
  53         public final List<String> methodNames;
  54 
  55         private MethodGroup(String... methodNames) {
  56             this.methodNames = Collections.unmodifiableList(
  57                     Arrays.asList(methodNames));
  58         }
  59     }
  60 
  61     public static void main(String args[]) {
  62         EnumSet<MethodGroup> notIgnoredMethodGroups
  63                 = EnumSet.complementOf(EnumSet.of(MethodGroup.IGNORED));
  64 
  65         notIgnoredMethodGroups.forEach(
  66                 TestMutuallyExclusivePlatformPredicates::verifyPredicates);
  67 
  68         TestMutuallyExclusivePlatformPredicates.verifyCoverage();
  69     }
  70 
  71     /**
  72      * Verifies that one and only one predicate method defined in
  73      * {@link com.oracle.java.testlibrary.Platform}, whose name included into
  74      * methodGroup will return {@code true}.
  75      * @param methodGroup The group of methods that should be tested.
  76      */
  77     private static void verifyPredicates(MethodGroup methodGroup) {
  78         System.out.println("Verifying method group: " + methodGroup.name());
  79         long truePredicatesCount = methodGroup.methodNames.stream()
  80                 .filter(TestMutuallyExclusivePlatformPredicates
  81                         ::evaluatePredicate)
  82                 .count();
  83 
  84         Asserts.assertEQ(truePredicatesCount, 1L, String.format(
  85                 "Only one predicate from group %s should be evaluated to true "
  86                         + "(Actually %d predicates were evaluated to true).",
  87                 methodGroup.name(), truePredicatesCount));
  88     }
  89 
  90     /**
  91      * Verifies that all predicates defined in
  92      * {@link com.oracle.java.testlibrary.Platform} were either tested or
  93      * explicitly ignored.
  94      */
  95     private static void verifyCoverage() {
  96         Set<String> allMethods = new HashSet<>();
  97         for (MethodGroup group : MethodGroup.values()) {
  98             allMethods.addAll(group.methodNames);
  99         }
 100 
 101         for (Method m : Platform.class.getMethods()) {
 102             if (m.getParameterCount() == 0
 103                     && m.getReturnType() == boolean.class) {
 104                 Asserts.assertTrue(allMethods.contains(m.getName()),
 105                         "All Platform's methods with signature '():Z' should "
 106                                 + "be tested ");
 107             }
 108         }
 109     }
 110 
 111     /**
 112      * Evaluates predicate method with name {@code name} defined in
 113      * {@link com.oracle.java.testlibrary.Platform}.
 114      *
 115      * @param name The name of a predicate to be evaluated.
 116      * @return evaluated predicate's value.
 117      * @throws java.lang.Error if predicate is not defined or could not be
 118      *                         evaluated.
 119      */
 120     private static boolean evaluatePredicate(String name) {
 121         try {
 122             System.out.printf("Trying to evaluate predicate with name %s%n",
 123                     name);
 124             boolean value
 125                     = (Boolean) Platform.class.getMethod(name).invoke(null);
 126             System.out.printf("Predicate evaluated to: %s%n", value);
 127             return value;
 128         } catch (NoSuchMethodException e) {
 129             throw new Error("Predicate with name " + name
 130                     + " is not defined in " + Platform.class.getName(), e);
 131         } catch (IllegalAccessException | InvocationTargetException e) {
 132             throw new Error("Unable to evaluate predicate " + name, e);
 133         }
 134     }
 135 }
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