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     }
  50
  51     @After
  52     public void cleanup() {
  53         FileBackedOutputStreamTest.deleteTempFiles(TEMP_DIR);
  54     }
  55
  56     @Test
  57     public void testSingleUsage() throws IOException {
  58         LOG.info("testSingleUsage starting");
  59         try (SharedFileBackedOutputStream fbos = new SharedFileBackedOutputStream(5, TEMP_DIR)) {
  60             byte[] bytes = new byte[]{0, 1, 2, 3, 4, 5, 6};
  61             fbos.write(bytes);
  62
  63             assertNotNull("Expected temp file created", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  64             fbos.cleanup();
  65             assertNull("Found unexpected temp file", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  66         }
  67
  68         LOG.info("testSingleUsage ending");
  69     }
  70
  71     @SuppressWarnings("unchecked")
  72     @Test
  73     public void testSharing() throws IOException {
  74         LOG.info("testSharing starting");
  75         try (SharedFileBackedOutputStream fbos = new SharedFileBackedOutputStream(5, TEMP_DIR)) {
  76             String context = "context";
  77             Consumer<String> mockCallback = Mockito.mock(Consumer.class);
  78             fbos.setOnCleanupCallback(mockCallback , context);
  79
  80             byte[] bytes = new byte[]{0, 1, 2, 3, 4, 5, 6};
  81             fbos.write(bytes);
  82
  83             assertNotNull("Expected temp file created", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  84
  85             fbos.incrementUsageCount();
  86             fbos.cleanup();
  87             assertNotNull("Expected temp file exists", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  88
  89             fbos.incrementUsageCount();
  90             fbos.incrementUsageCount();
  91
  92             fbos.cleanup();
  93             assertNotNull("Expected temp file exists", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  94
  95             fbos.cleanup();
  96             assertNotNull("Expected temp file exists", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
  97
  98             verify(mockCallback, never()).accept(context);
  99
 100             fbos.cleanup();
 101             assertNull("Found unexpected temp file", FileBackedOutputStreamTest.findTempFileName(TEMP_DIR));
 102
 103             verify(mockCallback).accept(context);
 104         }
 105
 106         LOG.info("testSharing ending");
 107     }
 108 }