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/*
* Copyright (c) 2014, 2023, 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 jdk.test.lib.Asserts;
import jdk.test.lib.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 jdk.test.lib.Platform one and only one predicate
* evaluates to true.
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run main TestMutuallyExclusivePlatformPredicates
*/
public class TestMutuallyExclusivePlatformPredicates {
private static enum MethodGroup {
ARCH("isAArch64", "isARM", "isPPC", "isS390x", "isSparc", "isX64", "isX86"),
BITNESS("is32bit", "is64bit"),
OS("isAix", "isLinux", "isOSX", "isSolaris", "isWindows"),
VM_TYPE("isClient", "isServer", "isGraal", "isMinimal", "isZero", "isEmbedded"),
MODE("isInt", "isMixed", "isComp"),
IGNORED("isEmulatedClient", "isDebugBuild", "isFastDebugBuild", "isSlowDebugBuild",
"hasSA", "isRoot", "isTieredSupported", "areCustomLoadersSupportedForCDS",
"isHardenedOSX", "hasOSXPlistEntries", "isOracleLinux7");
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 jdk.test.lib.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 jdk.test.lib.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. Missing: " + m.getName());
}
}
}
/**
* Evaluates predicate method with name {@code name} defined in
* {@link jdk.test.lib.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);
}
}
}
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