2 * (C) Copyright 2016 Pantheon Technologies, s.r.o. and others.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.opendaylight.yangtools.triemap;
18 import static org.junit.Assert.assertEquals;
19 import static org.junit.Assert.assertFalse;
20 import static org.junit.Assert.assertNull;
21 import static org.junit.Assert.assertSame;
22 import static org.junit.Assert.assertTrue;
24 import java.util.HashSet;
25 import java.util.Iterator;
27 import java.util.Map.Entry;
28 import java.util.NoSuchElementException;
29 import java.util.Random;
31 import org.junit.Test;
33 public class TestMapIterator {
35 public void testMapIterator () {
36 final Random random = new Random();
38 for (int i = 0; i < 60 * 1000; i+= 400 + random.nextInt(400)) {
39 final Map<Integer, Integer> bt = new TrieMap <>();
40 for (int j = 0; j < i; j++) {
41 assertNull(bt.put(Integer.valueOf(j), Integer.valueOf(j)));
44 final Set<Integer> set = new HashSet<>();
45 for (final Entry<Integer, Integer> e : bt.entrySet()) {
49 for (final Integer j : set) {
50 assertTrue(bt.containsKey(j));
52 for (final Integer j : bt.keySet()) {
53 assertTrue(set.contains(j));
56 assertEquals(i, count);
57 assertEquals(i, bt.size());
59 for (Entry<Integer, Integer> e : bt.entrySet()) {
60 assertSame(e.getValue(), bt.get(e.getKey()));
61 e.setValue(e.getValue() + 1);
62 assertEquals((Object)e.getValue(), e.getKey () + 1);
63 assertEquals(e.getValue(), bt.get(e.getKey()));
64 e.setValue(e.getValue() - 1);
67 final Iterator<Integer> it = bt.keySet().iterator();
69 final Integer k = it.next ();
70 assertTrue(bt.containsKey(k));
72 assertFalse(bt.containsKey(k));
75 assertEquals(0, bt.size ());
76 assertTrue(bt.isEmpty ());
80 private static void failAdvance(final Iterator<?> it) {
81 assertFalse(it.hasNext());
85 @Test(expected = NoSuchElementException.class)
86 public void testEmptyIterator() {
87 failAdvance(new TrieMap<>().iterator());
90 @Test(expected = NoSuchElementException.class)
91 public void testEmptyReadOnlyIterator() {
92 failAdvance(new TrieMap<>().readOnlyIterator());
95 @Test(expected = NoSuchElementException.class)
96 public void testEmptyReadOnlySnapshotIterator() {
97 failAdvance(new TrieMap<>().readOnlySnapshot().iterator());