2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.yangtools.util;
10 import static org.junit.jupiter.api.Assertions.assertEquals;
11 import static org.junit.jupiter.api.Assertions.assertFalse;
12 import static org.junit.jupiter.api.Assertions.assertThrows;
13 import static org.junit.jupiter.api.Assertions.assertTrue;
15 import com.google.common.collect.Iterables;
16 import java.util.Collection;
17 import java.util.List;
19 import org.junit.jupiter.api.Test;
21 class ConstantArrayCollectionTest {
22 private static final String[] ARRAY = new String[] { "a", "bb", "ccc" };
23 private static final Collection<String> REF = List.of(ARRAY);
25 private static Collection<String> create() {
26 return new ConstantArrayCollection<>(ARRAY.clone());
32 assertEquals(Set.of().toString(), new ConstantArrayCollection<>(new Object[0]).toString());
35 assertEquals(REF.toString(), create().toString());
40 final var c = create();
42 assertTrue(c.containsAll(REF));
43 assertTrue(REF.containsAll(c));
44 assertTrue(Iterables.elementsEqual(REF, c));
48 void testSimpleOperations() {
49 final var c = create();
51 assertEquals(ARRAY.length, c.size());
52 assertFalse(c.isEmpty());
53 assertTrue(c.contains("ccc"));
54 assertFalse(c.contains(""));
55 assertFalse(c.contains(1));
57 assertTrue(c.containsAll(List.of()));
58 assertFalse(c.containsAll(Set.of("")));
59 assertFalse(c.containsAll(Set.of(1)));
63 void testProtection() {
64 final var c = create();
66 assertThrows(UnsupportedOperationException.class, () -> c.add(null));
67 assertThrows(UnsupportedOperationException.class, () -> c.remove(null));
68 assertThrows(UnsupportedOperationException.class, () -> c.addAll(null));
69 assertThrows(UnsupportedOperationException.class, () -> c.removeAll(null));
70 assertThrows(UnsupportedOperationException.class, () -> c.retainAll(null));
71 assertThrows(UnsupportedOperationException.class, () -> c.clear());