trace/mdsal-trace-impl/src/test/java/org/opendaylight/mdsal/trace/test/TracingBrokerTest.java

   1 /*
   2  * Copyright (c) 2017 Red Hat, Inc. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.mdsal.trace.test;
   9
  10 import static java.nio.charset.StandardCharsets.UTF_8;
  11 import static org.hamcrest.CoreMatchers.containsString;
  12 import static org.hamcrest.CoreMatchers.not;
  13 import static org.hamcrest.MatcherAssert.assertThat;
  14 import static org.junit.Assert.assertTrue;
  15 import static org.mockito.Mockito.RETURNS_DEEP_STUBS;
  16 import static org.mockito.Mockito.mock;
  17
  18 import java.io.ByteArrayOutputStream;
  19 import java.io.PrintStream;
  20 import org.junit.Test;
  21 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTree;
  22 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  23 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadWriteTransaction;
  24 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
  25 import org.opendaylight.mdsal.trace.impl.TracingBroker;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsaltrace.rev160908.Config;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsaltrace.rev160908.ConfigBuilder;
  28
  29 /**
  30  * Test of {@link TracingBroker}. This test resides outside of org.opendaylight.mdsal.trace.impl package on purpose,
  31  * as the package name is used to suppress stack entries.
  32  *
  33  * @author Michael Vorburger.ch
  34  */
  35 public class TracingBrokerTest {
  36     @Test
  37     @SuppressWarnings({ "resource", "unused" }) // Finding resource leaks is the point of this test
  38     public void testPrintOpenTransactions() {
  39         DOMDataBroker domDataBroker = mock(DOMDataBroker.class, RETURNS_DEEP_STUBS);
  40         Config config = new ConfigBuilder().setTransactionDebugContextEnabled(true).build();
  41         BindingCodecTree codec = mock(BindingCodecTree.class);
  42         TracingBroker tracingBroker = new TracingBroker(domDataBroker, config, codec);
  43
  44         for (int i = 0; i < 3; i++) {
  45             DOMDataTreeReadWriteTransaction tx = tracingBroker.newReadWriteTransaction();
  46         }
  47         DOMDataTreeReadWriteTransaction anotherTx = tracingBroker.newReadWriteTransaction();
  48
  49         DOMTransactionChain txChain = tracingBroker.createTransactionChain();
  50         DOMDataTreeReadWriteTransaction txFromChain = txChain.newReadWriteTransaction();
  51
  52         ByteArrayOutputStream baos = new ByteArrayOutputStream();
  53         PrintStream ps = new PrintStream(baos);
  54         boolean printReturnValue = tracingBroker.printOpenTransactions(ps, 1);
  55         String output = new String(baos.toByteArray(), UTF_8);
  56
  57         assertTrue(printReturnValue);
  58         // Assert expectations about stack trace
  59         assertThat(output, containsString("testPrintOpenTransactions(TracingBrokerTest.java"));
  60         assertThat(output, not(containsString(TracingBroker.class.getName())));
  61
  62         String previousLine = "";
  63         for (String line : output.split("\n")) {
  64             if (line.contains("(...")) {
  65                 assertThat(previousLine, not(containsString("(...)")));
  66             }
  67             previousLine = line;
  68         }
  69
  70         // assert that the sorting works - the x3 is shown before the x1
  71         assertThat(output, containsString("  DataBroker : newReadWriteTransaction()\n    3x"));
  72
  73         // We don't do any verify/times on the mocks,
  74         // because the main point of the test is just to verify that
  75         // printOpenTransactions runs through without any exceptions
  76         // (e.g. it used to have a ClassCastException).
  77     }
  78 }