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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    *      https://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  
18  package org.apache.commons.lang3.function;
19  
20  import static org.junit.jupiter.api.Assertions.assertEquals;
21  import static org.junit.jupiter.api.Assertions.assertThrows;
22  import static org.junit.jupiter.api.Assertions.assertTrue;
23  
24  import java.io.IOException;
25  import java.util.concurrent.atomic.AtomicBoolean;
26  
27  import org.apache.commons.lang3.AbstractLangTest;
28  import org.junit.jupiter.api.Test;
29  
30  /**
31   * Tests {@link FailableRunnable}.
32   */
33  class FailableRunnableTest extends AbstractLangTest {
34  
35      @Test
36      void testRun_executesBody() throws IOException {
37          final AtomicBoolean ran = new AtomicBoolean();
38          final FailableRunnable<IOException> runnable = () -> ran.set(true);
39          runnable.run();
40          assertTrue(ran.get());
41      }
42  
43      @Test
44      void testRun_throwsException() {
45          final IOException expected = new IOException("fail");
46          final FailableRunnable<IOException> runnable = () -> {
47              throw expected;
48          };
49          final IOException thrown = assertThrows(IOException.class, runnable::run);
50          assertEquals(expected, thrown);
51      }
52  }