opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/utils/UnsignedLongSetTest.java

   1 /*
   2  * Copyright (c) 2021 PANTHEON.tech, s.r.o. 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.datastore.utils;
   9
  10 import static org.junit.Assert.assertArrayEquals;
  11 import static org.junit.Assert.assertEquals;
  12 import static org.junit.Assert.assertFalse;
  13 import static org.junit.Assert.assertNotEquals;
  14 import static org.junit.Assert.assertNotSame;
  15 import static org.junit.Assert.assertSame;
  16 import static org.junit.Assert.assertThrows;
  17 import static org.junit.Assert.assertTrue;
  18 import static org.mockito.Mockito.mock;
  19
  20 import java.io.ByteArrayInputStream;
  21 import java.io.ByteArrayOutputStream;
  22 import java.io.DataInputStream;
  23 import java.io.DataOutput;
  24 import java.io.DataOutputStream;
  25 import java.io.IOException;
  26 import org.junit.Test;
  27 import org.junit.runner.RunWith;
  28 import org.mockito.junit.MockitoJUnitRunner;
  29
  30 @RunWith(MockitoJUnitRunner.StrictStubs.class)
  31 public class UnsignedLongSetTest {
  32     @Test
  33     public void testOperations() {
  34         final var set = MutableUnsignedLongSet.of();
  35         assertEquals("MutableUnsignedLongSet{size=0}", set.toString());
  36         assertFalse(set.contains(0));
  37
  38         set.add(0);
  39         assertTrue(set.contains(0));
  40         assertEquals("MutableUnsignedLongSet{span=[0..0], size=1}", set.toString());
  41
  42         set.add(1);
  43         assertTrue(set.contains(1));
  44         assertEquals("MutableUnsignedLongSet{span=[0..1], size=1}", set.toString());
  45         set.add(1);
  46         assertEquals("MutableUnsignedLongSet{span=[0..1], size=1}", set.toString());
  47
  48         set.add(4);
  49         assertEquals("MutableUnsignedLongSet{span=[0..4], size=2}", set.toString());
  50
  51         set.add(3);
  52         assertEquals("MutableUnsignedLongSet{span=[0..4], size=2}", set.toString());
  53
  54         set.add(2);
  55         assertEquals("MutableUnsignedLongSet{span=[0..4], size=1}", set.toString());
  56
  57         assertTrue(set.contains(2));
  58         assertTrue(set.contains(3));
  59         assertTrue(set.contains(4));
  60     }
  61
  62     @Test
  63     public void testSerialization() throws IOException {
  64         final var tmp = MutableUnsignedLongSet.of();
  65         tmp.add(0);
  66         tmp.add(1);
  67         tmp.add(4);
  68         tmp.add(3);
  69
  70         final var set = tmp.immutableCopy();
  71
  72         final var bos = new ByteArrayOutputStream();
  73         try (var out = new DataOutputStream(bos)) {
  74             set.writeTo(out);
  75         }
  76
  77         final var bytes = bos.toByteArray();
  78         assertArrayEquals(new byte[] { 0, 0, 0, 2, 16, 2, 17, 3, 5 }, bytes);
  79
  80         final ImmutableUnsignedLongSet read;
  81         try (var in = new DataInputStream(new ByteArrayInputStream(bytes))) {
  82             read = ImmutableUnsignedLongSet.readFrom(in);
  83             assertEquals(0, in.available());
  84         }
  85
  86         assertEquals(set, read);
  87     }
  88
  89     @Test
  90     public void testToRangeSet() {
  91         final var set = MutableUnsignedLongSet.of();
  92         set.add(0);
  93         set.add(1);
  94         set.add(4);
  95         set.add(3);
  96         assertEquals("[[0..2), [3..5)]", set.toRangeSet().toString());
  97     }
  98
  99     @Test
 100     public void testEmptyCopy() {
 101         final var orig = MutableUnsignedLongSet.of();
 102         assertSame(ImmutableUnsignedLongSet.of(), orig.immutableCopy());
 103         final var copy = orig.mutableCopy();
 104         assertEquals(orig, copy);
 105         assertNotSame(orig, copy);
 106     }
 107
 108     @Test
 109     public void testMutableCopy() {
 110         final var orig = MutableUnsignedLongSet.of();
 111         orig.add(-1);
 112         assertEquals("MutableUnsignedLongSet{span=[18446744073709551615..18446744073709551615], size=1}",
 113             orig.toString());
 114
 115         final var copy = orig.mutableCopy();
 116         assertEquals(orig, copy);
 117         assertNotSame(orig, copy);
 118
 119         orig.add(-2);
 120         assertNotEquals(orig, copy);
 121         assertEquals("MutableUnsignedLongSet{span=[18446744073709551614..18446744073709551615], size=1}",
 122             orig.toString());
 123     }
 124
 125     @Test
 126     public void testWriteRangesTo() throws IOException {
 127         ImmutableUnsignedLongSet.of().writeRangesTo(mock(DataOutput.class), 0);
 128     }
 129
 130     @Test
 131     public void testWriteRangesToViolation() {
 132         final var ex = assertThrows(IOException.class,
 133             () -> ImmutableUnsignedLongSet.of().writeRangesTo(mock(DataOutput.class), 1));
 134         assertEquals("Mismatched size: expected 0, got 1", ex.getMessage());
 135     }
 136 }