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17 package org.apache.commons.io.input;
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19 import static org.junit.jupiter.api.Assertions.assertEquals;
20 import static org.mockito.Mockito.never;
21 import static org.mockito.Mockito.spy;
22 import static org.mockito.Mockito.verify;
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24 import java.io.IOException;
25 import java.io.Reader;
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27 import org.junit.jupiter.api.BeforeEach;
28 import org.junit.jupiter.api.Test;
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33 public class CloseShieldReaderTest {
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35 private String data;
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37 private Reader original;
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39 private Reader shielded;
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41 @BeforeEach
42 public void setUp() {
43 data = "xyz";
44 original = spy(new CharSequenceReader(data));
45 shielded = CloseShieldReader.wrap(original);
46 }
47
48 @Test
49 public void testClose() throws IOException {
50 shielded.close();
51 verify(original, never()).close();
52 final char[] cbuf = new char[10];
53 assertEquals(-1, shielded.read(cbuf, 0, 10), "read(cbuf, off, len)");
54 assertEquals(data.length(), original.read(cbuf, 0, 10), "read(cbuf, off, len)");
55 assertEquals(data, new String(cbuf, 0, data.length()));
56 }
57
58 }