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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  package org.apache.commons.lang3.concurrent;
18  
19  import static org.junit.jupiter.api.Assertions.assertEquals;
20  import static org.junit.jupiter.api.Assertions.assertNotNull;
21  import static org.junit.jupiter.api.Assertions.assertNull;
22  import static org.junit.jupiter.api.Assertions.assertThrows;
23  
24  import org.apache.commons.lang3.exception.AbstractExceptionTest;
25  import org.junit.jupiter.api.Test;
26  
27  /**
28   * JUnit tests for {@link CircuitBreakingException}.
29   */
30  class CircuitBreakingExceptionTest extends AbstractExceptionTest {
31  
32      @Test
33      void testThrowingEmptyException() {
34          assertThrows(CircuitBreakingException.class, () -> {
35              throw new CircuitBreakingException();
36          });
37      }
38  
39      @Test
40      void testThrowingExceptionWithCause() {
41          assertThrows(CircuitBreakingException.class, () -> {
42              throw new CircuitBreakingException(generateCause());
43          });
44      }
45  
46      @Test
47      void testThrowingExceptionWithMessage() {
48          assertThrows(CircuitBreakingException.class, () -> {
49              throw new CircuitBreakingException(EXCEPTION_MESSAGE);
50          });
51      }
52  
53      @Test
54      void testThrowingInformativeException() {
55          assertThrows(CircuitBreakingException.class, () -> {
56              throw new CircuitBreakingException(EXCEPTION_MESSAGE, generateCause());
57          });
58      }
59  
60      @Test
61      void testWithCauseAndMessage() {
62          final Exception exception = new CircuitBreakingException(EXCEPTION_MESSAGE, generateCause());
63          assertNotNull(exception);
64          assertEquals(EXCEPTION_MESSAGE, exception.getMessage(), WRONG_EXCEPTION_MESSAGE);
65  
66          final Throwable cause = exception.getCause();
67          assertNotNull(cause);
68          assertEquals(CAUSE_MESSAGE, cause.getMessage(), WRONG_CAUSE_MESSAGE);
69      }
70  
71      @Test
72      void testWithoutCause() {
73          final Exception exception = new CircuitBreakingException(EXCEPTION_MESSAGE);
74          assertNotNull(exception);
75          assertEquals(EXCEPTION_MESSAGE, exception.getMessage(), WRONG_EXCEPTION_MESSAGE);
76  
77          final Throwable cause = exception.getCause();
78          assertNull(cause);
79      }
80  
81      @Test
82      void testWithoutMessage() {
83          final Exception exception = new CircuitBreakingException(generateCause());
84          assertNotNull(exception);
85          assertNotNull(exception.getMessage());
86  
87          final Throwable cause = exception.getCause();
88          assertNotNull(cause);
89          assertEquals(CAUSE_MESSAGE, cause.getMessage(), WRONG_CAUSE_MESSAGE);
90      }
91  }