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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    *      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.io.input;
18  
19  import static org.junit.jupiter.api.Assertions.assertEquals;
20  import static org.junit.jupiter.api.Assertions.assertFalse;
21  
22  import java.io.ByteArrayInputStream;
23  import java.io.IOException;
24  import java.io.InputStream;
25  
26  import org.junit.jupiter.api.BeforeEach;
27  import org.junit.jupiter.api.Test;
28  
29  /**
30   * Tests {@link CloseShieldInputStream}.
31   */
32  public class CloseShieldInputStreamTest {
33  
34      private byte[] data;
35  
36      private InputStream original;
37  
38      private InputStream shielded;
39  
40      private boolean closed;
41  
42      @BeforeEach
43      public void setUp() {
44          data = new byte[] { 'x', 'y', 'z' };
45          original = new ByteArrayInputStream(data) {
46              @Override
47              public void close() {
48                  closed = true;
49              }
50          };
51          shielded = CloseShieldInputStream.wrap(original);
52          closed = false;
53      }
54  
55      @Test
56      public void testClose() throws IOException {
57          shielded.close();
58          assertFalse(closed, "closed");
59          assertEquals(-1, shielded.read(), "read()");
60          assertEquals(data[0], original.read(), "read()");
61      }
62  
63  }