1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.lang3.concurrent;
18
19 import static org.junit.jupiter.api.Assertions.assertFalse;
20 import static org.junit.jupiter.api.Assertions.assertTrue;
21
22 import java.io.IOException;
23 import java.util.concurrent.atomic.AtomicBoolean;
24
25 import org.junit.jupiter.api.Test;
26
27 /**
28 * Tests {@code LazyInitializer}.
29 */
30 public class LazyInitializerFailableCloserTest extends AbstractConcurrentInitializerTest {
31
32 private final AtomicBoolean closed = new AtomicBoolean();
33
34 /**
35 * Creates the initializer to be tested. This implementation returns the {@code LazyInitializer} created in the {@code setUp()} method.
36 *
37 * @return the initializer to be tested
38 */
39 @Override
40 protected LazyInitializer<Object> createInitializer() {
41 return LazyInitializer.builder().setInitializer(this::makeObject).setCloser(e -> throwingCloser()).get();
42 }
43
44 private Object makeObject() throws ConcurrentException {
45 if (closed.get()) {
46 // Doesn't actually throw, just for the method sig without unused warning.
47 throw new ConcurrentException("test", new IOException());
48 }
49 return new Object();
50 }
51
52 @Test
53 public void testIsInitialized() throws ConcurrentException {
54 final LazyInitializer<Object> initializer = createInitializer();
55 assertFalse(initializer.isInitialized());
56 initializer.get();
57 assertTrue(initializer.isInitialized());
58 assertFalse(closed.get());
59 initializer.close();
60 assertTrue(closed.get());
61 }
62
63 private void throwingCloser() throws ConcurrentException {
64 closed.set(true);
65 // always false:
66 if (!closed.get()) {
67 // Doesn't actually throw, just for the method sig without unused warning.
68 throw new ConcurrentException("test", new IOException());
69 }
70 }
71
72 }