--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/management/MBeanInfo/MBeanInfoEqualsTest.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,379 @@
+/*
+ * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 4719923
+ * @summary Test that MBeanInfo.equals works even for mutable subclasses
+ * @author Eamonn McManus
+ * @run clean MBeanInfoEqualsTest
+ * @run build MBeanInfoEqualsTest
+ * @run main MBeanInfoEqualsTest
+ */
+
+/* Test that MBeanInfo and its referenced classes implement the equals
+ and hashCode methods correctly. These classes include some magic
+ to improve performance based on the classes' immutability. The
+ logic checks that any subclasses encountered remain immutable, and
+ falls back on less performant code if not. */
+
+import javax.management.*;
+import java.lang.reflect.*;
+
+public class MBeanInfoEqualsTest {
+ // Class just used for reflection
+ private static class Toy {
+ public Toy() {}
+ public Toy(int a, String b) {}
+ public int getA() {return 0;}
+ public void setA(int a) {}
+ public boolean isB() {return false;}
+ public void setB(boolean b) {}
+ public void run() {}
+ public void blah(int a, String b) {}
+ }
+
+ static final Class toy = Toy.class;
+ static final Constructor con1, con2;
+ static final Method getA, setA, isB, setB, run, blah;
+ static {
+ try {
+ con1 = toy.getConstructor(new Class[] {});
+ con2 = toy.getConstructor(new Class[] {Integer.TYPE,
+ String.class});
+ getA = toy.getMethod("getA", new Class[] {});
+ setA = toy.getMethod("setA", new Class[] {Integer.TYPE});
+ isB = toy.getMethod("isB", new Class[] {});
+ setB = toy.getMethod("setB", new Class[] {Boolean.TYPE});
+ run = toy.getMethod("run", new Class[] {});
+ blah = toy.getMethod("blah", new Class[] {Integer.TYPE,
+ String.class});
+ } catch (Exception e) {
+ throw new Error(e.getMessage());
+ }
+ }
+
+ private static final MBeanAttributeInfo
+ newMBeanAttributeInfo(String name, String description,
+ Method getter, Method setter) {
+ try {
+ return new MBeanAttributeInfo(name, description, getter, setter);
+ } catch (IntrospectionException e) {
+ throw new Error(e.getMessage());
+ }
+ }
+
+ static final MBeanAttributeInfo
+ a1a = new MBeanAttributeInfo("thing", "java.foo.bar", "an attribute",
+ true, true, false),
+ a1b = new MBeanAttributeInfo("thing", "java.foo.bar", "an attribute",
+ true, true, false),
+ a2a = new MBeanAttributeInfo("splob", "java.foo.bar", "an attribute",
+ true, true, false),
+ a2b = new MBeanAttributeInfo(a2a.getName(), a2a.getType(),
+ a2a.getDescription(), a2a.isReadable(),
+ a2a.isWritable(), a2a.isIs()),
+ a3 = new MBeanAttributeInfo("splob", "java.foo.bar", "a whatsit",
+ true, true, false),
+ a4 = new MBeanAttributeInfo("splob", "java.foo.bar", "a whatsit",
+ false, true, false),
+ a5a = newMBeanAttributeInfo("a", "an attribute", getA, setA),
+ a5b = new MBeanAttributeInfo("a", "int", "an attribute",
+ true, true, false),
+ a6a = newMBeanAttributeInfo("a", "an attribute", getA, null),
+ a6b = new MBeanAttributeInfo("a", "int", "an attribute",
+ true, false, false),
+ a7a = newMBeanAttributeInfo("a", "an attribute", null, setA),
+ a7b = new MBeanAttributeInfo("a", "int", "an attribute",
+ false, true, false),
+ a8a = newMBeanAttributeInfo("b", "an attribute", isB, setB),
+ a8b = new MBeanAttributeInfo("b", "boolean", "an attribute",
+ true, true, true),
+ a9a = newMBeanAttributeInfo("b", "an attribute", isB, null),
+ a9b = new MBeanAttributeInfo("b", "boolean", "an attribute",
+ true, false, true);
+
+ static final MBeanParameterInfo
+ p1a = new MBeanParameterInfo("thing", "java.foo.bar", "a parameter"),
+ p1b = new MBeanParameterInfo("thing", "java.foo.bar", "a parameter"),
+ p2 = new MBeanParameterInfo("splob", "java.foo.bar", "a parameter"),
+ p3 = new MBeanParameterInfo("thing", "java.foo.bax", "a parameter"),
+ p4 = new MBeanParameterInfo("thing", "java.foo.bar", "a whatsit");
+
+ static final MBeanConstructorInfo
+ c1a = new MBeanConstructorInfo("a constructor", con1),
+ c1b = new MBeanConstructorInfo(c1a.getName(), "a constructor",
+ new MBeanParameterInfo[0]),
+ c1c = new MBeanConstructorInfo(c1a.getName(), c1a.getDescription(),
+ c1a.getSignature()),
+ c1d = new MBeanConstructorInfo(c1a.getName(), c1a.getDescription(),
+ null),
+ c2a = new MBeanConstructorInfo("another constructor", con2),
+ c2b = new MBeanConstructorInfo(c2a.getName(),
+ c2a.getDescription(),
+ c2a.getSignature()),
+ c3a = new MBeanConstructorInfo("conName", "a constructor",
+ new MBeanParameterInfo[] {p2, p3}),
+ c3b = new MBeanConstructorInfo("conName", "a constructor",
+ new MBeanParameterInfo[] {p2, p3}),
+ c4 = new MBeanConstructorInfo("conName", "a constructor",
+ new MBeanParameterInfo[] {p3, p2}),
+ c5 = new MBeanConstructorInfo("otherName", "a constructor",
+ new MBeanParameterInfo[] {p3, p2}),
+ c6 = new MBeanConstructorInfo("otherName", "another constructor",
+ new MBeanParameterInfo[] {p3, p2});
+
+ static final MBeanOperationInfo
+ o1a = new MBeanOperationInfo("an operation", run),
+ o1b = new MBeanOperationInfo("an operation", run),
+ o1c = new MBeanOperationInfo("run", "an operation",
+ o1a.getSignature(), "void",
+ o1a.getImpact()),
+ o1d = new MBeanOperationInfo("run", "an operation",
+ new MBeanParameterInfo[0], "void",
+ o1a.getImpact()),
+ o1e = new MBeanOperationInfo("run", "an operation",
+ null, "void",
+ o1a.getImpact()),
+ o2a = new MBeanOperationInfo("another operation", blah),
+ o2b = new MBeanOperationInfo(o2a.getName(), o2a.getDescription(),
+ o2a.getSignature(), o2a.getReturnType(),
+ o2a.getImpact());
+
+ static final MBeanNotificationInfo
+ n1a = new MBeanNotificationInfo(new String[] {"a.b", "c.d"},
+ "x.y.z",
+ "a notification info"),
+ n1b = new MBeanNotificationInfo(new String[] {"a.b", "c.d"},
+ "x.y.z",
+ "a notification info"),
+ n2a = new MBeanNotificationInfo(new String[] {"a.b", "c.d"},
+ "x.y.z",
+ "another notification info"),
+ n2b = new MBeanNotificationInfo(n2a.getNotifTypes(),
+ n2a.getName(),
+ n2a.getDescription()),
+ n3 = new MBeanNotificationInfo(new String[] {"a.b", "c.d"},
+ "x.y.zz",
+ "a notification info"),
+ n4 = new MBeanNotificationInfo(new String[] {"c.d", "a.b"},
+ "x.y.z",
+ "a notification info");
+
+ static final MBeanAttributeInfo[]
+ xa1a = {a1a, a2a},
+ xa1b = {a1b, a2b},
+ xa2a = {a2a, a1a};
+
+ static final MBeanConstructorInfo[]
+ xc1a = {c1a, c2a},
+ xc1b = {c1b, c2b},
+ xc2a = {c2a, c1a};
+
+ static final MBeanOperationInfo[]
+ xo1a = {o1a, o2a},
+ xo1b = {o1b, o2b},
+ xo2a = {o2a, o1a};
+
+ static final MBeanNotificationInfo[]
+ xn1a = {n1a, n2a},
+ xn1b = {n1b, n2b},
+ xn2a = {n2a, n1a};
+
+ static final MBeanInfo
+ i1a = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc1a, xo1a, xn1a),
+ i1b = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc1a, xo1a, xn1a),
+ i1c = new MBeanInfo("a.b.c", "an MBean info", xa1b, xc1b, xo1b, xn1b),
+ i1d = new MutableMBeanInfo("a.b.c", "an MBean info", xa1b, xc1b, xo1b,
+ xn1b),
+ i1e = new ImmutableMBeanInfo("a.b.c", "an MBean info", xa1b, xc1b,
+ xo1b, xn1b),
+ i1f = new ImmutableMBeanInfo("a.b.c", "an MBean info", xa1b, xc1b,
+ xo1b, xn1b),
+ i2a = new MBeanInfo("a.b.cc", "an MBean info", xa1a, xc1a, xo1a, xn1a),
+ i2b = new MBeanInfo(i2a.getClassName(), i2a.getDescription(),
+ i2a.getAttributes(), i2a.getConstructors(),
+ i2a.getOperations(), i2a.getNotifications()),
+ i3 = new MBeanInfo("a.b.c", "another MBean info", xa1a, xc1a, xo1a,
+ xn1a),
+ i4 = new MBeanInfo("a.b.c", "an MBean info", xa2a, xc1a, xo1a, xn1a),
+ i5 = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc2a, xo1a, xn1a),
+ i6 = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc1a, xo2a, xn1a),
+ i7 = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc1a, xo1a, xn2a);
+
+ static final Object[][] equivalenceClasses = {
+ {a1a, a1b}, {a2a, a2b}, {a3}, {a4}, {a5a, a5b}, {a6a, a6b}, {a7a, a7b},
+ {a8a, a8b}, {a9a, a9b},
+ {c1a, c1b, c1c, c1d}, {c2a, c2b}, {c3a, c3b}, {c4}, {c5}, {c6},
+ {o1a, o1b, o1c, o1d, o1e}, {o2a, o2b},
+ {p1a, p1b}, {p2}, {p3}, {p4},
+ {n1a, n1b}, {n2a, n2b}, {n3}, {n4},
+ {i1a, i1b, i1c, i1d, i1e, i1f}, {i2a, i2b}, {i3}, {i4}, {i5}, {i6},
+ {i7},
+ };
+
+ private static class ImmutableMBeanInfo extends MBeanInfo {
+ ImmutableMBeanInfo(String className,
+ String description,
+ MBeanAttributeInfo[] attributes,
+ MBeanConstructorInfo[] constructors,
+ MBeanOperationInfo[] operations,
+ MBeanNotificationInfo[] notifications) {
+ super(className, description, attributes, constructors, operations,
+ notifications);
+ }
+ }
+
+ /* This class checks that the MBeanInfo.equals() method really
+ does call getClassName() etc rather than referring to its
+ private fields. */
+ private static class MutableMBeanInfo extends MBeanInfo {
+ private final String className;
+ private final String description;
+ private final MBeanAttributeInfo[] attributes;
+ private final MBeanOperationInfo[] operations;
+ private final MBeanConstructorInfo[] constructors;
+ private final MBeanNotificationInfo[] notifications;
+
+ MutableMBeanInfo(String className,
+ String description,
+ MBeanAttributeInfo[] attributes,
+ MBeanConstructorInfo[] constructors,
+ MBeanOperationInfo[] operations,
+ MBeanNotificationInfo[] notifications) {
+ super("bogus", null, null, null, null, null);
+ this.className = className;
+ this.description = description;
+ this.attributes = attributes;
+ this.constructors = constructors;
+ this.operations = operations;
+ this.notifications = notifications;
+ }
+
+ public String getClassName() {
+ return className;
+ }
+
+ public String getDescription() {
+ return description;
+ }
+
+ public MBeanAttributeInfo[] getAttributes() {
+ return attributes;
+ }
+
+ public MBeanOperationInfo[] getOperations() {
+ return operations;
+ }
+
+ public MBeanConstructorInfo[] getConstructors() {
+ return constructors;
+ }
+
+ public MBeanNotificationInfo[] getNotifications() {
+ return notifications;
+ }
+ }
+
+ private static boolean checkEquals(String what, Object[][] equivs) {
+ boolean ok = true;
+ /* The equivs array is an array of equivalence classes. The members
+ of each equivalence class must be equal among themselves.
+ Each member of each equivalence class must be different from
+ each member of each other equivalence class. */
+ for (int ei = 0; ei < equivs.length; ei++) {
+ Object[] ec1 = equivs[ei];
+ ok &= checkSame(what + " equivalence class " + ei, ec1);
+ for (int ej = 0; ej < equivs.length; ej++) {
+ if (ei == ej)
+ continue;
+ Object[] ec2 = equivs[ej];
+ ok &= checkDifferent(what + " equivalence classes " +
+ ei + " and " + ej, ec1, ec2);
+ }
+ }
+ if (ok)
+ System.out.println("equals test for " + what + " passed");
+ return ok;
+ }
+
+ /* We could simplify this test to compare every element with every
+ other and choose whether they are supposed to be the same based
+ on whether they are in the same equivalence class. A bit
+ simpler, but so what. */
+
+ private static boolean checkSame(String what, Object[] equiv) {
+ boolean ok = true;
+ for (int i = 0; i < equiv.length; i++) {
+ final Object o1 = equiv[i];
+ for (int j = 0; j < equiv.length; j++) {
+ final Object o2 = equiv[j];
+ if (!o1.equals(o2)) {
+ System.out.println("equals test: " + what +
+ ": !obj[" + i +
+ "].equals(obj[" + j + "])");
+ System.out.println("..." + o1 + " " + o2);
+ ok = false;
+ }
+ if (o1.hashCode() != o2.hashCode()) {
+ System.out.println("equals test: " + what +
+ ": obj[" + i +
+ "].hashCode() != obj[" + j +
+ "].hashCode()");
+ System.out.println("..." + o1 + " " + o2);
+ ok = false;
+ }
+ }
+ }
+ return ok;
+ }
+
+ private static boolean checkDifferent(String what, Object[] equiv1,
+ Object[] equiv2) {
+ boolean ok = true;
+ for (int i = 0; i < equiv1.length; i++) {
+ final Object o1 = equiv1[i];
+ for (int j = 0; j < equiv2.length; j++) {
+ final Object o2 = equiv2[j];
+ if (o1.equals(o2)) {
+ System.out.println("equals test " + what + ": obj[" +
+ i + "].equals(obj[" + j + "])");
+ System.out.println("..." + o1 + " " + o2);
+ ok = false;
+ }
+ }
+ }
+ return ok;
+ }
+
+ public static void main(String[] args) throws Exception {
+ boolean ok = true;
+ ok &= checkEquals("equivalence", equivalenceClasses);
+ if (ok) {
+ System.out.println("all tests passed");
+ } else {
+ System.out.println("at least one test failed");
+ System.exit(1);
+ }
+ }
+}