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.vfs2.provider.ram;
18
19 import static org.junit.jupiter.api.Assertions.assertEquals;
20 import static org.junit.jupiter.api.Assertions.assertNotEquals;
21
22 import java.io.IOException;
23 import java.io.InputStream;
24 import java.io.OutputStream;
25
26 import org.apache.commons.vfs2.FileObject;
27 import org.apache.commons.vfs2.VFS;
28 import org.apache.commons.vfs2.util.RandomAccessMode;
29 import org.junit.jupiter.api.Test;
30
31 /**
32 */
33 public class RamFileRandomAccessContentTest {
34
35 private final int EOF = -1;
36
37 @Test
38 public void testInputStreamRead0xff() throws IOException {
39
40 // create ram file to test
41 final FileObject file = VFS.getManager().resolveFile("ram://file");
42 file.createFile();
43
44 // write test data,a single byte 0xFF
45 try (OutputStream out = file.getContent().getOutputStream()) {
46 out.write(0xFF);
47 }
48
49 // read test data,first data should be 0xFF instead of -1. Will read -1 finally (EOF)
50 try (InputStream in = new RamFileRandomAccessContent((RamFileObject) file, RandomAccessMode.READ).getInputStream()) {
51 // read first data
52 final int read = in.read();
53 assertNotEquals(EOF, read);
54 assertEquals(0xFF, read);
55
56 // read EOF
57 assertEquals(EOF, in.read());
58 }
59 }
60
61 }