J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 4719923 |
| 27 | * @summary Test that MBeanInfo.equals works even for mutable subclasses |
| 28 | * @author Eamonn McManus |
| 29 | * @run clean MBeanInfoEqualsTest |
| 30 | * @run build MBeanInfoEqualsTest |
| 31 | * @run main MBeanInfoEqualsTest |
| 32 | */ |
| 33 | |
| 34 | /* Test that MBeanInfo and its referenced classes implement the equals |
| 35 | and hashCode methods correctly. These classes include some magic |
| 36 | to improve performance based on the classes' immutability. The |
| 37 | logic checks that any subclasses encountered remain immutable, and |
| 38 | falls back on less performant code if not. */ |
| 39 | |
| 40 | import javax.management.*; |
| 41 | import java.lang.reflect.*; |
| 42 | |
| 43 | public class MBeanInfoEqualsTest { |
| 44 | // Class just used for reflection |
| 45 | private static class Toy { |
| 46 | public Toy() {} |
| 47 | public Toy(int a, String b) {} |
| 48 | public int getA() {return 0;} |
| 49 | public void setA(int a) {} |
| 50 | public boolean isB() {return false;} |
| 51 | public void setB(boolean b) {} |
| 52 | public void run() {} |
| 53 | public void blah(int a, String b) {} |
| 54 | } |
| 55 | |
| 56 | static final Class toy = Toy.class; |
| 57 | static final Constructor con1, con2; |
| 58 | static final Method getA, setA, isB, setB, run, blah; |
| 59 | static { |
| 60 | try { |
| 61 | con1 = toy.getConstructor(new Class[] {}); |
| 62 | con2 = toy.getConstructor(new Class[] {Integer.TYPE, |
| 63 | String.class}); |
| 64 | getA = toy.getMethod("getA", new Class[] {}); |
| 65 | setA = toy.getMethod("setA", new Class[] {Integer.TYPE}); |
| 66 | isB = toy.getMethod("isB", new Class[] {}); |
| 67 | setB = toy.getMethod("setB", new Class[] {Boolean.TYPE}); |
| 68 | run = toy.getMethod("run", new Class[] {}); |
| 69 | blah = toy.getMethod("blah", new Class[] {Integer.TYPE, |
| 70 | String.class}); |
| 71 | } catch (Exception e) { |
| 72 | throw new Error(e.getMessage()); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | private static final MBeanAttributeInfo |
| 77 | newMBeanAttributeInfo(String name, String description, |
| 78 | Method getter, Method setter) { |
| 79 | try { |
| 80 | return new MBeanAttributeInfo(name, description, getter, setter); |
| 81 | } catch (IntrospectionException e) { |
| 82 | throw new Error(e.getMessage()); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | static final MBeanAttributeInfo |
| 87 | a1a = new MBeanAttributeInfo("thing", "java.foo.bar", "an attribute", |
| 88 | true, true, false), |
| 89 | a1b = new MBeanAttributeInfo("thing", "java.foo.bar", "an attribute", |
| 90 | true, true, false), |
| 91 | a2a = new MBeanAttributeInfo("splob", "java.foo.bar", "an attribute", |
| 92 | true, true, false), |
| 93 | a2b = new MBeanAttributeInfo(a2a.getName(), a2a.getType(), |
| 94 | a2a.getDescription(), a2a.isReadable(), |
| 95 | a2a.isWritable(), a2a.isIs()), |
| 96 | a3 = new MBeanAttributeInfo("splob", "java.foo.bar", "a whatsit", |
| 97 | true, true, false), |
| 98 | a4 = new MBeanAttributeInfo("splob", "java.foo.bar", "a whatsit", |
| 99 | false, true, false), |
| 100 | a5a = newMBeanAttributeInfo("a", "an attribute", getA, setA), |
| 101 | a5b = new MBeanAttributeInfo("a", "int", "an attribute", |
| 102 | true, true, false), |
| 103 | a6a = newMBeanAttributeInfo("a", "an attribute", getA, null), |
| 104 | a6b = new MBeanAttributeInfo("a", "int", "an attribute", |
| 105 | true, false, false), |
| 106 | a7a = newMBeanAttributeInfo("a", "an attribute", null, setA), |
| 107 | a7b = new MBeanAttributeInfo("a", "int", "an attribute", |
| 108 | false, true, false), |
| 109 | a8a = newMBeanAttributeInfo("b", "an attribute", isB, setB), |
| 110 | a8b = new MBeanAttributeInfo("b", "boolean", "an attribute", |
| 111 | true, true, true), |
| 112 | a9a = newMBeanAttributeInfo("b", "an attribute", isB, null), |
| 113 | a9b = new MBeanAttributeInfo("b", "boolean", "an attribute", |
| 114 | true, false, true); |
| 115 | |
| 116 | static final MBeanParameterInfo |
| 117 | p1a = new MBeanParameterInfo("thing", "java.foo.bar", "a parameter"), |
| 118 | p1b = new MBeanParameterInfo("thing", "java.foo.bar", "a parameter"), |
| 119 | p2 = new MBeanParameterInfo("splob", "java.foo.bar", "a parameter"), |
| 120 | p3 = new MBeanParameterInfo("thing", "java.foo.bax", "a parameter"), |
| 121 | p4 = new MBeanParameterInfo("thing", "java.foo.bar", "a whatsit"); |
| 122 | |
| 123 | static final MBeanConstructorInfo |
| 124 | c1a = new MBeanConstructorInfo("a constructor", con1), |
| 125 | c1b = new MBeanConstructorInfo(c1a.getName(), "a constructor", |
| 126 | new MBeanParameterInfo[0]), |
| 127 | c1c = new MBeanConstructorInfo(c1a.getName(), c1a.getDescription(), |
| 128 | c1a.getSignature()), |
| 129 | c1d = new MBeanConstructorInfo(c1a.getName(), c1a.getDescription(), |
| 130 | null), |
| 131 | c2a = new MBeanConstructorInfo("another constructor", con2), |
| 132 | c2b = new MBeanConstructorInfo(c2a.getName(), |
| 133 | c2a.getDescription(), |
| 134 | c2a.getSignature()), |
| 135 | c3a = new MBeanConstructorInfo("conName", "a constructor", |
| 136 | new MBeanParameterInfo[] {p2, p3}), |
| 137 | c3b = new MBeanConstructorInfo("conName", "a constructor", |
| 138 | new MBeanParameterInfo[] {p2, p3}), |
| 139 | c4 = new MBeanConstructorInfo("conName", "a constructor", |
| 140 | new MBeanParameterInfo[] {p3, p2}), |
| 141 | c5 = new MBeanConstructorInfo("otherName", "a constructor", |
| 142 | new MBeanParameterInfo[] {p3, p2}), |
| 143 | c6 = new MBeanConstructorInfo("otherName", "another constructor", |
| 144 | new MBeanParameterInfo[] {p3, p2}); |
| 145 | |
| 146 | static final MBeanOperationInfo |
| 147 | o1a = new MBeanOperationInfo("an operation", run), |
| 148 | o1b = new MBeanOperationInfo("an operation", run), |
| 149 | o1c = new MBeanOperationInfo("run", "an operation", |
| 150 | o1a.getSignature(), "void", |
| 151 | o1a.getImpact()), |
| 152 | o1d = new MBeanOperationInfo("run", "an operation", |
| 153 | new MBeanParameterInfo[0], "void", |
| 154 | o1a.getImpact()), |
| 155 | o1e = new MBeanOperationInfo("run", "an operation", |
| 156 | null, "void", |
| 157 | o1a.getImpact()), |
| 158 | o2a = new MBeanOperationInfo("another operation", blah), |
| 159 | o2b = new MBeanOperationInfo(o2a.getName(), o2a.getDescription(), |
| 160 | o2a.getSignature(), o2a.getReturnType(), |
| 161 | o2a.getImpact()); |
| 162 | |
| 163 | static final MBeanNotificationInfo |
| 164 | n1a = new MBeanNotificationInfo(new String[] {"a.b", "c.d"}, |
| 165 | "x.y.z", |
| 166 | "a notification info"), |
| 167 | n1b = new MBeanNotificationInfo(new String[] {"a.b", "c.d"}, |
| 168 | "x.y.z", |
| 169 | "a notification info"), |
| 170 | n2a = new MBeanNotificationInfo(new String[] {"a.b", "c.d"}, |
| 171 | "x.y.z", |
| 172 | "another notification info"), |
| 173 | n2b = new MBeanNotificationInfo(n2a.getNotifTypes(), |
| 174 | n2a.getName(), |
| 175 | n2a.getDescription()), |
| 176 | n3 = new MBeanNotificationInfo(new String[] {"a.b", "c.d"}, |
| 177 | "x.y.zz", |
| 178 | "a notification info"), |
| 179 | n4 = new MBeanNotificationInfo(new String[] {"c.d", "a.b"}, |
| 180 | "x.y.z", |
| 181 | "a notification info"); |
| 182 | |
| 183 | static final MBeanAttributeInfo[] |
| 184 | xa1a = {a1a, a2a}, |
| 185 | xa1b = {a1b, a2b}, |
| 186 | xa2a = {a2a, a1a}; |
| 187 | |
| 188 | static final MBeanConstructorInfo[] |
| 189 | xc1a = {c1a, c2a}, |
| 190 | xc1b = {c1b, c2b}, |
| 191 | xc2a = {c2a, c1a}; |
| 192 | |
| 193 | static final MBeanOperationInfo[] |
| 194 | xo1a = {o1a, o2a}, |
| 195 | xo1b = {o1b, o2b}, |
| 196 | xo2a = {o2a, o1a}; |
| 197 | |
| 198 | static final MBeanNotificationInfo[] |
| 199 | xn1a = {n1a, n2a}, |
| 200 | xn1b = {n1b, n2b}, |
| 201 | xn2a = {n2a, n1a}; |
| 202 | |
| 203 | static final MBeanInfo |
| 204 | i1a = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc1a, xo1a, xn1a), |
| 205 | i1b = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc1a, xo1a, xn1a), |
| 206 | i1c = new MBeanInfo("a.b.c", "an MBean info", xa1b, xc1b, xo1b, xn1b), |
| 207 | i1d = new MutableMBeanInfo("a.b.c", "an MBean info", xa1b, xc1b, xo1b, |
| 208 | xn1b), |
| 209 | i1e = new ImmutableMBeanInfo("a.b.c", "an MBean info", xa1b, xc1b, |
| 210 | xo1b, xn1b), |
| 211 | i1f = new ImmutableMBeanInfo("a.b.c", "an MBean info", xa1b, xc1b, |
| 212 | xo1b, xn1b), |
| 213 | i2a = new MBeanInfo("a.b.cc", "an MBean info", xa1a, xc1a, xo1a, xn1a), |
| 214 | i2b = new MBeanInfo(i2a.getClassName(), i2a.getDescription(), |
| 215 | i2a.getAttributes(), i2a.getConstructors(), |
| 216 | i2a.getOperations(), i2a.getNotifications()), |
| 217 | i3 = new MBeanInfo("a.b.c", "another MBean info", xa1a, xc1a, xo1a, |
| 218 | xn1a), |
| 219 | i4 = new MBeanInfo("a.b.c", "an MBean info", xa2a, xc1a, xo1a, xn1a), |
| 220 | i5 = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc2a, xo1a, xn1a), |
| 221 | i6 = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc1a, xo2a, xn1a), |
| 222 | i7 = new MBeanInfo("a.b.c", "an MBean info", xa1a, xc1a, xo1a, xn2a); |
| 223 | |
| 224 | static final Object[][] equivalenceClasses = { |
| 225 | {a1a, a1b}, {a2a, a2b}, {a3}, {a4}, {a5a, a5b}, {a6a, a6b}, {a7a, a7b}, |
| 226 | {a8a, a8b}, {a9a, a9b}, |
| 227 | {c1a, c1b, c1c, c1d}, {c2a, c2b}, {c3a, c3b}, {c4}, {c5}, {c6}, |
| 228 | {o1a, o1b, o1c, o1d, o1e}, {o2a, o2b}, |
| 229 | {p1a, p1b}, {p2}, {p3}, {p4}, |
| 230 | {n1a, n1b}, {n2a, n2b}, {n3}, {n4}, |
| 231 | {i1a, i1b, i1c, i1d, i1e, i1f}, {i2a, i2b}, {i3}, {i4}, {i5}, {i6}, |
| 232 | {i7}, |
| 233 | }; |
| 234 | |
| 235 | private static class ImmutableMBeanInfo extends MBeanInfo { |
| 236 | ImmutableMBeanInfo(String className, |
| 237 | String description, |
| 238 | MBeanAttributeInfo[] attributes, |
| 239 | MBeanConstructorInfo[] constructors, |
| 240 | MBeanOperationInfo[] operations, |
| 241 | MBeanNotificationInfo[] notifications) { |
| 242 | super(className, description, attributes, constructors, operations, |
| 243 | notifications); |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | /* This class checks that the MBeanInfo.equals() method really |
| 248 | does call getClassName() etc rather than referring to its |
| 249 | private fields. */ |
| 250 | private static class MutableMBeanInfo extends MBeanInfo { |
| 251 | private final String className; |
| 252 | private final String description; |
| 253 | private final MBeanAttributeInfo[] attributes; |
| 254 | private final MBeanOperationInfo[] operations; |
| 255 | private final MBeanConstructorInfo[] constructors; |
| 256 | private final MBeanNotificationInfo[] notifications; |
| 257 | |
| 258 | MutableMBeanInfo(String className, |
| 259 | String description, |
| 260 | MBeanAttributeInfo[] attributes, |
| 261 | MBeanConstructorInfo[] constructors, |
| 262 | MBeanOperationInfo[] operations, |
| 263 | MBeanNotificationInfo[] notifications) { |
| 264 | super("bogus", null, null, null, null, null); |
| 265 | this.className = className; |
| 266 | this.description = description; |
| 267 | this.attributes = attributes; |
| 268 | this.constructors = constructors; |
| 269 | this.operations = operations; |
| 270 | this.notifications = notifications; |
| 271 | } |
| 272 | |
| 273 | public String getClassName() { |
| 274 | return className; |
| 275 | } |
| 276 | |
| 277 | public String getDescription() { |
| 278 | return description; |
| 279 | } |
| 280 | |
| 281 | public MBeanAttributeInfo[] getAttributes() { |
| 282 | return attributes; |
| 283 | } |
| 284 | |
| 285 | public MBeanOperationInfo[] getOperations() { |
| 286 | return operations; |
| 287 | } |
| 288 | |
| 289 | public MBeanConstructorInfo[] getConstructors() { |
| 290 | return constructors; |
| 291 | } |
| 292 | |
| 293 | public MBeanNotificationInfo[] getNotifications() { |
| 294 | return notifications; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | private static boolean checkEquals(String what, Object[][] equivs) { |
| 299 | boolean ok = true; |
| 300 | /* The equivs array is an array of equivalence classes. The members |
| 301 | of each equivalence class must be equal among themselves. |
| 302 | Each member of each equivalence class must be different from |
| 303 | each member of each other equivalence class. */ |
| 304 | for (int ei = 0; ei < equivs.length; ei++) { |
| 305 | Object[] ec1 = equivs[ei]; |
| 306 | ok &= checkSame(what + " equivalence class " + ei, ec1); |
| 307 | for (int ej = 0; ej < equivs.length; ej++) { |
| 308 | if (ei == ej) |
| 309 | continue; |
| 310 | Object[] ec2 = equivs[ej]; |
| 311 | ok &= checkDifferent(what + " equivalence classes " + |
| 312 | ei + " and " + ej, ec1, ec2); |
| 313 | } |
| 314 | } |
| 315 | if (ok) |
| 316 | System.out.println("equals test for " + what + " passed"); |
| 317 | return ok; |
| 318 | } |
| 319 | |
| 320 | /* We could simplify this test to compare every element with every |
| 321 | other and choose whether they are supposed to be the same based |
| 322 | on whether they are in the same equivalence class. A bit |
| 323 | simpler, but so what. */ |
| 324 | |
| 325 | private static boolean checkSame(String what, Object[] equiv) { |
| 326 | boolean ok = true; |
| 327 | for (int i = 0; i < equiv.length; i++) { |
| 328 | final Object o1 = equiv[i]; |
| 329 | for (int j = 0; j < equiv.length; j++) { |
| 330 | final Object o2 = equiv[j]; |
| 331 | if (!o1.equals(o2)) { |
| 332 | System.out.println("equals test: " + what + |
| 333 | ": !obj[" + i + |
| 334 | "].equals(obj[" + j + "])"); |
| 335 | System.out.println("..." + o1 + " " + o2); |
| 336 | ok = false; |
| 337 | } |
| 338 | if (o1.hashCode() != o2.hashCode()) { |
| 339 | System.out.println("equals test: " + what + |
| 340 | ": obj[" + i + |
| 341 | "].hashCode() != obj[" + j + |
| 342 | "].hashCode()"); |
| 343 | System.out.println("..." + o1 + " " + o2); |
| 344 | ok = false; |
| 345 | } |
| 346 | } |
| 347 | } |
| 348 | return ok; |
| 349 | } |
| 350 | |
| 351 | private static boolean checkDifferent(String what, Object[] equiv1, |
| 352 | Object[] equiv2) { |
| 353 | boolean ok = true; |
| 354 | for (int i = 0; i < equiv1.length; i++) { |
| 355 | final Object o1 = equiv1[i]; |
| 356 | for (int j = 0; j < equiv2.length; j++) { |
| 357 | final Object o2 = equiv2[j]; |
| 358 | if (o1.equals(o2)) { |
| 359 | System.out.println("equals test " + what + ": obj[" + |
| 360 | i + "].equals(obj[" + j + "])"); |
| 361 | System.out.println("..." + o1 + " " + o2); |
| 362 | ok = false; |
| 363 | } |
| 364 | } |
| 365 | } |
| 366 | return ok; |
| 367 | } |
| 368 | |
| 369 | public static void main(String[] args) throws Exception { |
| 370 | boolean ok = true; |
| 371 | ok &= checkEquals("equivalence", equivalenceClasses); |
| 372 | if (ok) { |
| 373 | System.out.println("all tests passed"); |
| 374 | } else { |
| 375 | System.out.println("at least one test failed"); |
| 376 | System.exit(1); |
| 377 | } |
| 378 | } |
| 379 | } |