opendaylight/md-sal/sal-clustering-commons/src/test/java/org/opendaylight/controller/cluster/io/SharedFileBackedOutputStreamTest.java

   1 /*
   2  * Copyright (c) 2017 Inocybe Technologies 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.controller.cluster.io;
   9
  10 import static org.junit.Assert.assertNotNull;
  11 import static org.junit.Assert.assertNull;
  12 import static org.mockito.Mockito.never;
  13 import static org.mockito.Mockito.verify;
  14
  15 import java.io.IOException;
  16 import java.util.function.Consumer;
  17 import org.junit.After;
  18 import org.junit.AfterClass;
  19 import org.junit.Before;
  20 import org.junit.BeforeClass;
  21 import org.junit.Test;
  22 import org.mockito.Mockito;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  * Unit tests for SharedFileBackedOutputStream.
  28  *
  29  * @author Thomas Pantelis
  30  */
  31 public class SharedFileBackedOutputStreamTest {
  32     private static final Logger LOG = LoggerFactory.getLogger(SharedFileBackedOutputStreamTest.class);
  33     private static final String TEMP_DIR = "target/FileBackedOutputStreamTest";
  34
  35     @BeforeClass
  36     public static void staticSetup() {
  37         FileBackedOutputStreamTest.createDir(TEMP_DIR);
  38     }
  39
  40     @AfterClass
  41     public static void staticCleanup() {
  42         FileBackedOutputStreamTest.deleteTempFiles(TEMP_DIR);
  43         FileBackedOutputStreamTest.deleteFile(TEMP_DIR);
  44     }
  45
  46     @Before
  47     public void setup() {
  48         FileBackedOutputStreamTest.deleteTempFiles(TEMP_DIR);
  49         FileBackedOutputStream.REFERENCE_CACHE.clear();
  50     }
  51
  52     @After
  53     public void cleanup() {
  54         FileBackedOutputStreamTest.deleteTempFiles(TEMP_DIR);
  55     }
  56
  57     @Test
  58     public void testSingleUsage() throws IOException {
  59         LOG.info("testSingleUsage starting");
  60         try (SharedFileBackedOutputStream fbos = new SharedFileBackedOutputStream(5, TEMP_DIR)) {
  61             byte[] bytes = new byte[]{0, 1, 2, 3, 4, 5, 6};
  62             fbos.write(bytes);
  63
  64             assertNotNull("Expected temp file created", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  65             fbos.cleanup();
  66             assertNull("Found unexpected temp file", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  67         }
  68
  69         LOG.info("testSingleUsage ending");
  70     }
  71
  72     @SuppressWarnings("unchecked")
  73     @Test
  74     public void testSharing() throws IOException {
  75         LOG.info("testSharing starting");
  76         try (SharedFileBackedOutputStream fbos = new SharedFileBackedOutputStream(5, TEMP_DIR)) {
  77             String context = "context";
  78             Consumer<String> mockCallback = Mockito.mock(Consumer.class);
  79             fbos.setOnCleanupCallback(mockCallback , context);
  80
  81             byte[] bytes = new byte[]{0, 1, 2, 3, 4, 5, 6};
  82             fbos.write(bytes);
  83
  84             assertNotNull("Expected temp file created", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  85
  86             fbos.incrementUsageCount();
  87             fbos.cleanup();
  88             assertNotNull("Expected temp file exists", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  89
  90             fbos.incrementUsageCount();
  91             fbos.incrementUsageCount();
  92
  93             fbos.cleanup();
  94             assertNotNull("Expected temp file exists", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  95
  96             fbos.cleanup();
  97             assertNotNull("Expected temp file exists", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  98
  99             verify(mockCallback, never()).accept(context);
 100
 101             fbos.cleanup();
 102             assertNull("Found unexpected temp file", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
 103
 104             verify(mockCallback).accept(context);
 105         }
 106
 107         LOG.info("testSharing ending");
 108     }
 109 }