Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2014, 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.

  *

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

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

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

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

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

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

  *

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

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

  * questions.

  */

 import com.oracle.java.testlibrary.Asserts;

 import com.oracle.java.testlibrary.Platform;

 import java.lang.reflect.InvocationTargetException;

 import java.lang.reflect.Method;

 import java.util.Arrays;

 import java.util.Collections;

 import java.util.EnumSet;

 import java.util.HashSet;

 import java.util.List;

 import java.util.Set;

 /**

  * @test

  * @summary Verify that for each group of mutually exclusive predicates defined

  *          in com.oracle.java.testlibrary.Platform one and only one predicate

  *          evaluates to true.

  * @library /testlibrary

  * @run main TestMutuallyExclusivePlatformPredicates

  */

 public class TestMutuallyExclusivePlatformPredicates {

     private static enum MethodGroup {

         ARCH("isARM", "isPPC", "isSparc", "isX86", "isX64"),

         BITNESS("is32bit", "is64bit"),

         OS("isAix", "isLinux", "isSolaris", "isWindows", "isOSX"),

         VM_TYPE("isClient", "isServer", "isGraal", "isMinimal"),

         IGNORED("isEmbedded", "isDebugBuild", "shouldSAAttach",

                 "canPtraceAttachLinux", "canAttachOSX");

         public final List<String> methodNames;

         private MethodGroup(String... methodNames) {

             this.methodNames = Collections.unmodifiableList(

                     Arrays.asList(methodNames));

         }

     }

     public static void main(String args[]) {

         EnumSet<MethodGroup> notIgnoredMethodGroups

                 = EnumSet.complementOf(EnumSet.of(MethodGroup.IGNORED));

         notIgnoredMethodGroups.forEach(

                 TestMutuallyExclusivePlatformPredicates::verifyPredicates);

         TestMutuallyExclusivePlatformPredicates.verifyCoverage();

     }

     /**

      * Verifies that one and only one predicate method defined in

      * {@link com.oracle.java.testlibrary.Platform}, whose name included into

      * methodGroup will return {@code true}.

      * @param methodGroup The group of methods that should be tested.

      */

     private static void verifyPredicates(MethodGroup methodGroup) {

         System.out.println("Verifying method group: " + methodGroup.name());

         long truePredicatesCount = methodGroup.methodNames.stream()

                 .filter(TestMutuallyExclusivePlatformPredicates

                         ::evaluatePredicate)

                 .count();

         Asserts.assertEQ(truePredicatesCount, 1L, String.format(

                 "Only one predicate from group %s should be evaluated to true "

                         + "(Actually %d predicates were evaluated to true).",

                 methodGroup.name(), truePredicatesCount));

     }

     /**

      * Verifies that all predicates defined in

      * {@link com.oracle.java.testlibrary.Platform} were either tested or

      * explicitly ignored.

      */

     private static void verifyCoverage() {

         Set<String> allMethods = new HashSet<>();

         for (MethodGroup group : MethodGroup.values()) {

             allMethods.addAll(group.methodNames);

         }

         for (Method m : Platform.class.getMethods()) {

             if (m.getParameterCount() == 0

                     && m.getReturnType() == boolean.class) {

                 Asserts.assertTrue(allMethods.contains(m.getName()),

                         "All Platform's methods with signature '():Z' should "

                                 + "be tested ");

             }

         }

     }

     /**

      * Evaluates predicate method with name {@code name} defined in

      * {@link com.oracle.java.testlibrary.Platform}.

      *

      * @param name The name of a predicate to be evaluated.

      * @return evaluated predicate's value.

      * @throws java.lang.Error if predicate is not defined or could not be

      *                         evaluated.

      */

     private static boolean evaluatePredicate(String name) {

         try {

             System.out.printf("Trying to evaluate predicate with name %s%n",

                     name);

             boolean value

                     = (Boolean) Platform.class.getMethod(name).invoke(null);

             System.out.printf("Predicate evaluated to: %s%n", value);

             return value;

         } catch (NoSuchMethodException e) {

             throw new Error("Predicate with name " + name

                     + " is not defined in " + Platform.class.getName(), e);

         } catch (IllegalAccessException | InvocationTargetException e) {

             throw new Error("Unable to evaluate predicate " + name, e);

         }

     }

 }