1 /*
2 * Copyright (c) 2014, 2016, 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 jdk.test.lib.Asserts;
25 import jdk.test.lib.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 jdk.test.lib.Platform one and only one predicate
40 * evaluates to true.
41 * @library /test/lib
42 * @modules java.base/jdk.internal.misc
43 * java.management
44 * @run main TestMutuallyExclusivePlatformPredicates
45 */
46 public class TestMutuallyExclusivePlatformPredicates {
47 private static enum MethodGroup {
48 ARCH("isARM", "isPPC", "isSparc", "isX86", "isX64", "isAArch64"),
49 BITNESS("is32bit", "is64bit"),
50 OS("isAix", "isLinux", "isOSX", "isSolaris", "isWindows"),
51 VM_TYPE("isClient", "isServer", "isGraal", "isMinimal", "isZero", "isEmbedded"),
52 MODE("isInt", "isMixed", "isComp"),
53 IGNORED("isDebugBuild", "isFastDebugBuild", "isSlowDebugBuild",
54 "shouldSAAttach", "canPtraceAttachLinux", "canAttachOSX",
55 "isTieredSupported");
56
57 public final List<String> methodNames;
58
59 private MethodGroup(String... methodNames) {
60 this.methodNames = Collections.unmodifiableList(
61 Arrays.asList(methodNames));
62 }
63 }
64
65 public static void main(String args[]) {
66 EnumSet<MethodGroup> notIgnoredMethodGroups
67 = EnumSet.complementOf(EnumSet.of(MethodGroup.IGNORED));
68
69 notIgnoredMethodGroups.forEach(
70 TestMutuallyExclusivePlatformPredicates::verifyPredicates);
71
72 TestMutuallyExclusivePlatformPredicates.verifyCoverage();
73 }
74
75 /**
76 * Verifies that one and only one predicate method defined in
77 * {@link jdk.test.lib.Platform}, whose name included into
78 * methodGroup will return {@code true}.
79 * @param methodGroup The group of methods that should be tested.
80 */
81 private static void verifyPredicates(MethodGroup methodGroup) {
82 System.out.println("Verifying method group: " + methodGroup.name());
83 long truePredicatesCount = methodGroup.methodNames.stream()
84 .filter(TestMutuallyExclusivePlatformPredicates
85 ::evaluatePredicate)
86 .count();
87
88 Asserts.assertEQ(truePredicatesCount, 1L, String.format(
89 "Only one predicate from group %s should be evaluated to true "
90 + "(Actually %d predicates were evaluated to true).",
91 methodGroup.name(), truePredicatesCount));
92 }
93
94 /**
95 * Verifies that all predicates defined in
96 * {@link jdk.test.lib.Platform} were either tested or
97 * explicitly ignored.
98 */
99 private static void verifyCoverage() {
100 Set<String> allMethods = new HashSet<>();
101 for (MethodGroup group : MethodGroup.values()) {
102 allMethods.addAll(group.methodNames);
103 }
104
105 for (Method m : Platform.class.getMethods()) {
106 if (m.getParameterCount() == 0
107 && m.getReturnType() == boolean.class) {
108 Asserts.assertTrue(allMethods.contains(m.getName()),
109 "All Platform's methods with signature '():Z' should "
110 + "be tested ");
111 }
112 }
113 }
114
115 /**
116 * Evaluates predicate method with name {@code name} defined in
117 * {@link jdk.test.lib.Platform}.
118 *
119 * @param name The name of a predicate to be evaluated.
120 * @return evaluated predicate's value.
121 * @throws java.lang.Error if predicate is not defined or could not be
122 * evaluated.
123 */
124 private static boolean evaluatePredicate(String name) {
125 try {
126 System.out.printf("Trying to evaluate predicate with name %s%n",
127 name);
128 boolean value
129 = (Boolean) Platform.class.getMethod(name).invoke(null);
130 System.out.printf("Predicate evaluated to: %s%n", value);
131 return value;
132 } catch (NoSuchMethodException e) {
133 throw new Error("Predicate with name " + name
134 + " is not defined in " + Platform.class.getName(), e);
135 } catch (IllegalAccessException | InvocationTargetException e) {
136 throw new Error("Unable to evaluate predicate " + name, e);
137 }
138 }
139 }