common/util/src/test/java/org/opendaylight/yangtools/util/ReadWriteTrieMapTest.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, 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.yangtools.util;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.assertFalse;
  12 import static org.junit.Assert.assertNotEquals;
  13 import static org.junit.Assert.assertNotNull;
  14 import static org.junit.Assert.assertTrue;
  15
  16 import java.util.Collection;
  17 import java.util.HashMap;
  18 import java.util.Map;
  19 import java.util.Map.Entry;
  20 import java.util.Set;
  21 import org.junit.Test;
  22 import org.opendaylight.yangtools.triemap.MutableTrieMap;
  23 import org.opendaylight.yangtools.triemap.TrieMap;
  24
  25 public class ReadWriteTrieMapTest {
  26
  27     @Test
  28     public void testMethodsOfReadWriteTrieMap() {
  29         final MutableTrieMap<String, String> trieMap = TrieMap.create();
  30         trieMap.put("0", "zero");
  31         trieMap.put("1", "one");
  32
  33         final ReadWriteTrieMap<String, String> readWriteTrieMap = new ReadWriteTrieMap<>(trieMap, 5);
  34
  35         assertNotNull("Object readOnlyTrieMap shouldn't be 'null'.", readWriteTrieMap);
  36
  37         assertEquals("Size of readOnlyTrieMap should be '5'.", 5, readWriteTrieMap.size());
  38         assertFalse("Object readOnlyTrieMap shouldn't be empty.", readWriteTrieMap.isEmpty());
  39
  40         assertTrue("Object readOnlyTrieMap should have key '0'.", readWriteTrieMap.containsKey("0"));
  41         assertTrue("Object readOnlyTrieMap should have value 'zero'.", readWriteTrieMap.containsValue("zero"));
  42         assertEquals("Object readOnlyTrieMap should have value 'zero'.", "zero", readWriteTrieMap.get("0"));
  43
  44         final Map<String, String> rwMap = readWriteTrieMap;
  45         rwMap.put("2", "two");
  46         rwMap.put("3", "three");
  47
  48         assertEquals("Removed value from readOnlyTrieMap should be 'one'.", "one", rwMap.remove("1"));
  49
  50         final Set<String> trieMapKeySet = readWriteTrieMap.keySet();
  51         assertEquals("Size of keySet should be '3'.", 3, trieMapKeySet.size());
  52
  53         final Collection<String> trieMapValues = readWriteTrieMap.values();
  54         assertEquals("Size of values should be '3'.", 3, trieMapValues.size());
  55
  56         assertEquals(convertSetEntryToMap(readWriteTrieMap.entrySet()), trieMap);
  57
  58         trieMap.put("2", "two");
  59         final ReadWriteTrieMap<String, String> readWriteTrieMap2 = new ReadWriteTrieMap<>(trieMap, 4);
  60
  61         assertNotEquals(readWriteTrieMap, readWriteTrieMap2);
  62         assertEquals(readWriteTrieMap.hashCode(), readWriteTrieMap2.hashCode());
  63
  64         final Map<String, String> readOnlyTrieMap = readWriteTrieMap.toReadOnly();
  65         readWriteTrieMap.clear();
  66         assertEquals(0, readWriteTrieMap.size());
  67         assertEquals(6, readOnlyTrieMap.size());
  68     }
  69
  70     private static Map<String, String> convertSetEntryToMap(final Set<Entry<String, String>> input) {
  71         Map<String, String> resultMap = new HashMap<>();
  72         for (Entry<String, String> entry : input) {
  73             resultMap.put(entry.getKey(), entry.getValue());
  74         }
  75         return resultMap;
  76     }
  77 }