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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.output;
18  
19  import static org.junit.jupiter.api.Assertions.assertThrows;
20  
21  import java.io.IOException;
22  
23  import org.junit.jupiter.api.Test;
24  
25  /**
26   * Tests {@link ClosedWriter}.
27   */
28  public class ClosedWriterTest {
29  
30      /**
31       * Test the {@code flush()} method.
32       */
33      @Test
34      public void testFlush() throws IOException {
35          try (ClosedWriter cw = new ClosedWriter()) {
36              assertThrows(IOException.class, () -> cw.flush());
37          }
38      }
39  
40      /**
41       * Test the {@code write(cbuf, off, len)} method.
42       */
43      @Test
44      public void testWrite() throws IOException {
45          try (ClosedWriter cw = new ClosedWriter()) {
46              assertThrows(IOException.class, () -> cw.write(new char[0], 0, 0));
47          }
48      }
49  
50  }