lttng-ust-java-tests-common/src/test/java/org/lttng/ust/agent/context/ContextRegistrationIT.java

   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.context;
  20
  21 import static org.junit.Assert.assertEquals;
  22 import static org.junit.Assert.fail;
  23
  24 import java.io.IOException;
  25
  26 import org.junit.Before;
  27 import org.junit.Test;
  28 import org.junit.runner.RunWith;
  29 import org.lttng.ust.agent.utils.TestPrintRunner;
  30
  31 /**
  32  * Generic tests related to the context retrieval mechanisms.
  33  *
  34  * @author Alexandre Montplaisir
  35  */
  36 @RunWith(TestPrintRunner.class)
  37 public class ContextRegistrationIT {
  38
  39     private ContextInfoManager mgr;
  40
  41     /**
  42      * Test setup
  43      */
  44     @Before
  45     public void testSetup() {
  46         try {
  47             mgr = ContextInfoManager.getInstance();
  48         } catch (SecurityException | IOException e) {
  49             fail(e.getMessage());
  50         }
  51     }
  52
  53     /**
  54      * Test registration and unregistration of a basic retriever.
  55      */
  56     @Test
  57     public void testRegistration() {
  58         final String retrieverName = "test-retriever";
  59         final IContextInfoRetriever emptyRetriever = (key -> null);
  60
  61         mgr.registerContextInfoRetriever(retrieverName, emptyRetriever);
  62
  63         IContextInfoRetriever retriever2 = mgr.getContextInfoRetriever(retrieverName);
  64         assertEquals(emptyRetriever, retriever2);
  65
  66         mgr.unregisterContextInfoRetriever(retrieverName);
  67     }
  68 }