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   1 /*
   2  * Copyright (C) 2016, EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 package org.lttng.ust.agent.integration.context;
  20
  21 import static org.junit.Assert.assertFalse;
  22 import static org.junit.Assert.assertNotNull;
  23 import static org.junit.Assert.assertTrue;
  24 import static org.junit.Assert.fail;
  25
  26 import java.io.IOException;
  27 import java.util.List;
  28
  29 import org.junit.After;
  30 import org.junit.Before;
  31 import org.junit.Test;
  32 import org.junit.runner.RunWith;
  33 import org.lttng.tools.ILttngSession;
  34 import org.lttng.tools.ILttngSession.Domain;
  35 import org.lttng.ust.agent.ILttngHandler;
  36 import org.lttng.ust.agent.context.ContextInfoManager;
  37 import org.lttng.ust.agent.utils.TestPrintRunner;
  38
  39 /**
  40  * Base abstract class to implement all sorts of integration tests verifying the
  41  * presence of enabled application contexts in resulting traces.
  42  */
  43 @RunWith(TestPrintRunner.class)
  44 public abstract class AppContextITBase {
  45
  46     protected static final String EVENT_NAME = "EventName";
  47
  48     protected static final String RETRIEVER_NAME_1 = "Retriever1";
  49     protected static final String RETRIEVER_NAME_2 = "some.retriever_2";
  50
  51     private static final String CONTEXT_NAME = ContextInfoRetrieverStubs.CONTEXT_NAME;
  52
  53     private ContextInfoManager cim;
  54     private ILttngSession session;
  55
  56     /* Field defined by the sub-class */
  57     protected ILttngHandler logHandler;
  58
  59     protected abstract Domain getDomain();
  60
  61     protected abstract boolean closeHandlers();
  62
  63     protected abstract void sendEventsToLoggers();
  64
  65     /**
  66      * Base test setup
  67      */
  68     @Before
  69     public void testSetup() {
  70         try {
  71             cim = ContextInfoManager.getInstance();
  72         } catch (SecurityException | IOException e) {
  73             /* The native library is not available! */
  74             fail(e.getMessage());
  75         }
  76         session = ILttngSession.createSession(null, getDomain());
  77     }
  78
  79     /**
  80      * Base test teardown
  81      */
  82     @After
  83     public void testTeardown() {
  84         session.close();
  85
  86         if (closeHandlers()) {
  87             logHandler.close();
  88         }
  89         logHandler = null;
  90
  91         /* In case some tests fail or forget to unregister their retrievers */
  92         cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1);
  93         cim.unregisterContextInfoRetriever(RETRIEVER_NAME_2);
  94     }
  95
  96     // ------------------------------------------------------------------------
  97     // Context enabled/disabled tests
  98     // ------------------------------------------------------------------------
  99
 100     /**
 101      * Utility method to check that a context is present in all events of a
 102      * trace output.
 103      */
 104     private static void testContextPresentInTrace(List<String> traceOutput, String retrieverName, String contextName, String contextValue) {
 105         String traceRetrieverName = convertToNameInTrace(retrieverName);
 106         String traceContextName = convertToNameInTrace(contextName);
 107
 108         String fullString = "_app_" + traceRetrieverName + "_" + traceContextName + " = " + contextValue;
 109         traceOutput.forEach(line -> assertTrue(line.contains(fullString)));
 110     }
 111
 112     /**
 113      * Utility method to check that a context is *absent* from all events of a
 114      * trace output
 115      */
 116     private static void testContextNotPresentInTrace(List<String> traceOutput, String retrieverName, String contextName) {
 117         String traceRetrieverName = convertToNameInTrace(retrieverName);
 118         String traceContextName = convertToNameInTrace(contextName);
 119
 120         String fullString = "_app_" + traceRetrieverName + "_" + traceContextName;
 121         traceOutput.forEach(line -> assertFalse(line.contains(fullString)));
 122     }
 123
 124     /**
 125      * LTTng accepts periods in context names, but ends up printing them as
 126      * underscores in the trace, so the metadata grammar remains valid.
 127      */
 128     private static String convertToNameInTrace(String name) {
 129         return name.replace('.', '_');
 130     }
 131
 132     /**
 133      * Test that if no retrievers are declared, no context info is passed at
 134      * all.
 135      */
 136     @Test
 137     public void testNoContexts() {
 138         assertTrue(session.enableAllEvents());
 139         assertTrue(session.start());
 140         sendEventsToLoggers();
 141         assertTrue(session.stop());
 142
 143         List<String> output = session.view();
 144         assertNotNull(output);
 145         assertFalse(output.isEmpty());
 146
 147         /* Test that there is no "_app" contexts in the output */
 148         output.forEach(line -> assertFalse(line.contains("_app")));
 149     }
 150
 151     /**
 152      * Test that if a retriever is registered and provides a context, but this
 153      * context is not enabled in the tracing session, that it is not present in
 154      * the trace.
 155      */
 156     @Test
 157     public void testContextAvailableButNotEnabled() {
 158         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 159
 160         assertTrue(session.enableAllEvents());
 161         assertTrue(session.start());
 162         sendEventsToLoggers();
 163         assertTrue(session.stop());
 164
 165         List<String> output = session.view();
 166         assertNotNull(output);
 167         assertFalse(output.isEmpty());
 168
 169         /* Test that there is no "_app" contexts in the output */
 170         output.forEach(line -> assertFalse(line.contains("_app")));
 171
 172         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 173     }
 174
 175     /**
 176      * Test that if a context is enabled, but no retriever provides it, that the
 177      * retriever/context names are still mentioned in the event but no value is
 178      * provided.
 179      */
 180     @Test
 181     public void testContextNotAvailableButEnabled() {
 182         assertTrue(session.enableAllEvents());
 183         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 184
 185         assertTrue(session.start());
 186         sendEventsToLoggers();
 187         assertTrue(session.stop());
 188
 189         List<String> output = session.view();
 190         assertNotNull(output);
 191         assertFalse(output.isEmpty());
 192
 193         /* Test that context name is there but value is not */
 194         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME, "{ { } } }");
 195     }
 196
 197     /**
 198      * Test that if a context is enabled and provided by a retriever that it is
 199      * correctly present in the tracing session.
 200      */
 201     @Test
 202     public void testContextAvailableAndEnabled() {
 203         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 204
 205         assertTrue(session.enableAllEvents());
 206         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 207
 208         assertTrue(session.start());
 209         sendEventsToLoggers();
 210         assertTrue(session.stop());
 211
 212         List<String> output = session.view();
 213         assertNotNull(output);
 214         assertFalse(output.isEmpty());
 215
 216         /* Test that context name + value are present */
 217         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 218                 "{ \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" }");
 219
 220         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 221     }
 222
 223     /**
 224      * Test that one context is available by a retriever, but another is is
 225      * enabled in the session. Only the latter should be mentioned in events,
 226      * with no value.
 227      */
 228     @Test
 229     public void testContextsOneAvailableOtherEnabled() {
 230         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 231
 232         assertTrue(session.enableAllEvents());
 233         assertTrue(session.enableAppContext(RETRIEVER_NAME_2, CONTEXT_NAME));
 234
 235         assertTrue(session.start());
 236         sendEventsToLoggers();
 237         assertTrue(session.stop());
 238
 239         List<String> output = session.view();
 240         assertNotNull(output);
 241         assertFalse(output.isEmpty());
 242
 243         /* Test that only retriever-name-2 is present, with no value */
 244         testContextNotPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME);
 245         testContextPresentInTrace(output, RETRIEVER_NAME_2, CONTEXT_NAME, "{ { } } }");
 246
 247         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 248     }
 249
 250     /**
 251      * Test with two contexts provided in the application, but only one of them
 252      * is enabled in the session. Only that one should be present in the trace,
 253      * name and value.
 254      */
 255     @Test
 256     public void testContextsTwoAvailableOneEnabled() {
 257         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 258         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_2, ContextInfoRetrieverStubs.INTEGER_RETRIEVER));
 259
 260         assertTrue(session.enableAllEvents());
 261         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 262
 263         assertTrue(session.start());
 264         sendEventsToLoggers();
 265         assertTrue(session.stop());
 266
 267         List<String> output = session.view();
 268         assertNotNull(output);
 269         assertFalse(output.isEmpty());
 270
 271         /* Test that only retriever-name-1 is present, name + value */
 272         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 273                 "{ \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" }");
 274         testContextNotPresentInTrace(output, RETRIEVER_NAME_2, CONTEXT_NAME);
 275
 276         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 277         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_2));
 278     }
 279
 280     /**
 281      * Test with two contexts enabled in the session but only one of them is
 282      * provided by the application. Both should be mentioned in the trace, but
 283      * only the provided one will have a value.
 284      */
 285     @Test
 286     public void testContextsOneAvailableTwoEnabled() {
 287         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 288
 289         assertTrue(session.enableAllEvents());
 290         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 291         assertTrue(session.enableAppContext(RETRIEVER_NAME_2, CONTEXT_NAME));
 292
 293         assertTrue(session.start());
 294         sendEventsToLoggers();
 295         assertTrue(session.stop());
 296
 297         List<String> output = session.view();
 298         assertNotNull(output);
 299         assertFalse(output.isEmpty());
 300
 301         /* Test that both contexts are present, but only retriever-1's has a value */
 302         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 303                 "{ \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" }");
 304         testContextPresentInTrace(output, RETRIEVER_NAME_2, CONTEXT_NAME, "{ { } } }");
 305
 306         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 307     }
 308
 309     // ------------------------------------------------------------------------
 310     // Context types tests
 311     // ------------------------------------------------------------------------
 312
 313     /**
 314      * Utility method to enable all events, add the one context we are looking
 315      * for, take a trace, and return the trace output.
 316      */
 317     private List<String> enableContextAndTrace() {
 318         assertTrue(session.enableAllEvents());
 319         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 320         assertTrue(session.start());
 321         sendEventsToLoggers();
 322         assertTrue(session.stop());
 323
 324         List<String> output = session.view();
 325         assertNotNull(output);
 326         assertFalse(output.isEmpty());
 327
 328         return output;
 329     }
 330
 331     /**
 332      * Test a "null" context value.
 333      */
 334     @Test
 335     public void testContextValueNull() {
 336         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.NULL_RETRIEVER));
 337
 338         List<String> output = enableContextAndTrace();
 339         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME, "{ { } } }");
 340
 341         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 342     }
 343
 344     /**
 345      * Test an integer (int32) context value.
 346      */
 347     @Test
 348     public void testContextValueInteger() {
 349         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.INTEGER_RETRIEVER));
 350
 351         List<String> output = enableContextAndTrace();
 352         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 353                 "{ " + ContextInfoRetrieverStubs.INTEGER_VALUE + " } }");
 354
 355         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 356     }
 357
 358     /**
 359      * Test a long (int64) context value.
 360      */
 361     @Test
 362     public void testContextValueLong() {
 363         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.LONG_RETRIEVER));
 364
 365         List<String> output = enableContextAndTrace();
 366         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 367                 "{ " + ContextInfoRetrieverStubs.LONG_VALUE + " } }");
 368
 369         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 370     }
 371
 372     /**
 373      * Test a double context value.
 374      */
 375     @Test
 376     public void testContextValueDouble() {
 377         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.DOUBLE_RETRIEVER));
 378
 379         List<String> output = enableContextAndTrace();
 380         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 381                 "{ " + ContextInfoRetrieverStubs.DOUBLE_VALUE + " } }");
 382
 383         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 384     }
 385
 386     /**
 387      * Test a character context value (should get converted to a string).
 388      */
 389     @Test
 390     public void testContextValueCharacter() {
 391         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.CHARACTER_RETRIEVER));
 392
 393         List<String> output = enableContextAndTrace();
 394         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 395                 "{ \"" + ContextInfoRetrieverStubs.CHARACTER_VALUE + "\" } }");
 396
 397         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 398     }
 399
 400     /**
 401      * Test a float context value.
 402      */
 403     @Test
 404     public void testContextValueFloat() {
 405         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.FLOAT_RETRIEVER));
 406
 407         List<String> output = enableContextAndTrace();
 408         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 409                 "{ " + ContextInfoRetrieverStubs.FLOAT_VALUE + " } }");
 410
 411         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 412     }
 413
 414     /**
 415      * Test a byte (int8) context value.
 416      */
 417     @Test
 418     public void testContextValueByte() {
 419         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.BYTE_RETRIEVER));
 420
 421         List<String> output = enableContextAndTrace();
 422         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 423                 "{ " + ContextInfoRetrieverStubs.BYTE_VALUE + " } }");
 424
 425         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 426     }
 427
 428     /**
 429      * Test a short (int16) context value.
 430      */
 431     @Test
 432     public void testContextValueShort() {
 433         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.SHORT_RETRIEVER));
 434
 435         List<String> output = enableContextAndTrace();
 436         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 437                 "{ " + ContextInfoRetrieverStubs.SHORT_VALUE + " } }");
 438
 439         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 440     }
 441
 442     /**
 443      * Test a "true" boolean context value (gets converted to a int8 of value 1).
 444      */
 445     @Test
 446     public void testContextValueBooleanTrue() {
 447         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.BOOLEAN_TRUE_RETRIEVER));
 448
 449         List<String> output = enableContextAndTrace();
 450         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME, "{ 1 } }");
 451
 452         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 453     }
 454
 455     /**
 456      * Test a "false" boolean context value (gets converted to a int8 of value 0).
 457      */
 458     @Test
 459     public void testContextValueBooleanFalse() {
 460         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.BOOLEAN_FALSE_RETRIEVER));
 461
 462         List<String> output = enableContextAndTrace();
 463         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME, "{ 0 } }");
 464
 465         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 466     }
 467
 468     /**
 469      * Test a string context value.
 470      */
 471     @Test
 472     public void testContextValueString() {
 473         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 474
 475         List<String> output = enableContextAndTrace();
 476         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 477                 "{ \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" } }");
 478
 479         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 480     }
 481
 482     /**
 483      * Test a Object context value (should be converted to a String via .toString()).
 484      */
 485     @Test
 486     public void testContextValueObject() {
 487         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.OBJECT_RETRIEVER));
 488
 489         List<String> output = enableContextAndTrace();
 490         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 491                 "{ \"" + ContextInfoRetrieverStubs.OBJECT_VALUE.toString() + "\" } }");
 492
 493         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 494     }
 495
 496     // ------------------------------------------------------------------------
 497     // Tests related to filtering
 498     // ------------------------------------------------------------------------
 499
 500     /**
 501      * Test with a filter expression using a context, but not having the actual
 502      * context enabled.
 503      *
 504      * The JNI should still send the context so UST can use it for filtering,
 505      * but it should not be present in the resulting trace.
 506      */
 507     @Test
 508     public void testContextFilterExpressionNotEnabled() {
 509         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 510
 511         assertTrue(session.enableEvent(EVENT_NAME, null, false,
 512                 "$app." + RETRIEVER_NAME_1 + ':' + CONTEXT_NAME + "==\"" + ContextInfoRetrieverStubs.STRING_VALUE + '\"'));
 513
 514         assertTrue(session.start());
 515         sendEventsToLoggers();
 516         assertTrue(session.stop());
 517
 518         List<String> output = session.view();
 519         assertNotNull(output);
 520         assertFalse(output.isEmpty());
 521
 522         testContextNotPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME);
 523
 524         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 525     }
 526
 527     /**
 528      * Test with a filter expression and an enabled context. The filter however
 529      * should *exclude* the events, so no events should be present in the
 530      * resulting trace.
 531      */
 532     @Test
 533     public void testContextFilterExpressionEnabledNotMatching() {
 534         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 535
 536         assertTrue(session.enableEvent(EVENT_NAME, null, false,
 537                 "$app." + RETRIEVER_NAME_1 + ':' + CONTEXT_NAME + "!=\"" + ContextInfoRetrieverStubs.STRING_VALUE + '\"'));
 538
 539         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 540         assertTrue(session.start());
 541         sendEventsToLoggers();
 542         assertTrue(session.stop());
 543
 544         List<String> output = session.view();
 545         assertNotNull(output);
 546         assertTrue(output.isEmpty());
 547
 548         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 549     }
 550
 551     /**
 552      * Test with a filter expression and an enabled context. The filter however
 553      * should match the events, so events with the context info should be
 554      * present in the resulting trace.
 555      */
 556     @Test
 557     public void testContextFilterExpressionEnabledMatching() {
 558         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 559
 560         assertTrue(session.enableEvent(EVENT_NAME, null, false,
 561                 "$app." + RETRIEVER_NAME_1 + ':' + CONTEXT_NAME + "==\"" + ContextInfoRetrieverStubs.STRING_VALUE + '\"'));
 562
 563         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 564         assertTrue(session.start());
 565         sendEventsToLoggers();
 566         assertTrue(session.stop());
 567
 568         List<String> output = session.view();
 569         assertNotNull(output);
 570         assertFalse(output.isEmpty());
 571
 572         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 573                 "{ \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" } }");
 574
 575         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 576     }
 577 }