1 /*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test
26 * @bug 8044289
27 * @summary Test verifies that when some of the read() and write() methods
28 * are not able to get stream from createImageInputStream() and
29 * createImageOutputStream() are we doing null check for stream
30 * and throwing IOException as per specification.
31 * @run main NullStreamCheckTest
32 */
33
34 import java.awt.image.BufferedImage;
35 import java.io.File;
36 import java.io.IOException;
37 import java.io.InputStream;
38 import java.io.OutputStream;
39 import java.net.MalformedURLException;
40 import java.net.URL;
41 import javax.imageio.ImageIO;
42 import javax.imageio.spi.IIORegistry;
43 import javax.imageio.spi.ImageInputStreamSpi;
44 import javax.imageio.spi.ImageOutputStreamSpi;
45
46 public class NullStreamCheckTest {
47
48 // get ImageIORegistry default instance.
49 private static final IIORegistry localRegistry = IIORegistry.
50 getDefaultInstance();
51 // stream variables needed for input and output.
52 static LocalOutputStream outputStream = new LocalOutputStream();
53 static LocalInputStream inputStream = new LocalInputStream();
54
55 static final int width = 50, height = 50;
56
57 // input and output BufferedImage needed while read and write.
58 static BufferedImage inputImage = new BufferedImage(width, height,
59 BufferedImage.TYPE_INT_ARGB);
60
61 // creates test file needed for read and write in local directory.
62 private static File createTestFile(String name) throws IOException {
63 String sep = System.getProperty("file.separator");
64 String dir = System.getProperty("test.src", ".");
65 String filePath = dir+sep;
66 File directory = new File(filePath);
67 File tmpTestFile = File.createTempFile(name, ".png", directory);
68 directory.delete();
69 return tmpTestFile;
70 }
71
72 /* if we catch expected IOException message return
73 * false otherwise return true.
74 */
75 private static boolean verifyOutputExceptionMessage(IOException ex) {
76 String message = ex.getMessage();
77 return (!message.equals("Can't create an ImageOutputStream!"));
78 }
79
80 /* if we catch expected IOException message return
81 * false otherwise return true.
82 */
83 private static boolean verifyInputExceptionMessage(IOException ex) {
84 String message = ex.getMessage();
85 return (!message.equals("Can't create an ImageInputStream!"));
86 }
87
88 private static void verifyFileWrite() throws IOException {
89 File outputTestFile = createTestFile("outputTestFile");
90 try {
91 ImageIO.write(inputImage, "png", outputTestFile);
92 } catch (IOException ex) {
93 if (verifyOutputExceptionMessage(ex))
94 throw ex;
95 } finally {
96 outputTestFile.delete();
97 }
98 }
99
100 private static void verifyStreamWrite() throws IOException {
101 try {
102 ImageIO.write(inputImage, "png", outputStream);
103 } catch (IOException ex) {
104 if (verifyOutputExceptionMessage(ex))
105 throw ex;
106 } finally {
107 try {
108 outputStream.close();
109 } catch (IOException ex) {
110 throw ex;
111 }
112 }
113 }
114
115 private static void verifyFileRead() throws IOException {
116 File inputTestFile = createTestFile("inputTestFile");
117 try {
118 ImageIO.read(inputTestFile);
119 } catch (IOException ex) {
120 if (verifyInputExceptionMessage(ex))
121 throw ex;
122 } finally {
123 inputTestFile.delete();
124 }
125 }
126
127 private static void verifyStreamRead() throws IOException {
128 try {
129 ImageIO.read(inputStream);
130 } catch (IOException ex) {
131 if (verifyInputExceptionMessage(ex))
132 throw ex;
133 } finally {
134 try {
135 inputStream.close();
136 } catch (IOException ex) {
137 throw ex;
138 }
139 }
140 }
141
142 private static void verifyUrlRead() throws IOException {
143 URL url;
144 File inputTestUrlFile = createTestFile("inputTestFile");
145 try {
146 try {
147 url = inputTestUrlFile.toURI().toURL();
148 } catch (MalformedURLException ex) {
149 throw ex;
150 }
151
152 try {
153 ImageIO.read(url);
154 } catch (IOException ex) {
155 if (verifyInputExceptionMessage(ex))
156 throw ex;
157 }
158 } finally {
159 inputTestUrlFile.delete();
160 }
161 }
162
163 public static void main(String[] args) throws IOException,
164 MalformedURLException {
165
166 /* deregister ImageOutputStreamSpi so that we creatImageOutputStream
167 * returns null while writing.
168 */
169 localRegistry.deregisterAll(ImageOutputStreamSpi.class);
170 /* verify possible ImageIO.write() scenario's for null stream output
171 * from createImageOutputStream() API in ImageIO class.
172 */
173 verifyFileWrite();
174 verifyStreamWrite();
175
176 /* deregister ImageInputStreamSpi so that we creatImageInputStream
177 * returns null while reading.
178 */
179 localRegistry.deregisterAll(ImageInputStreamSpi.class);
180 /* verify possible ImageIO.read() scenario's for null stream output
181 * from createImageInputStream API in ImageIO class.
182 */
183 verifyFileRead();
184 verifyStreamRead();
185 verifyUrlRead();
186 }
187
188 static class LocalOutputStream extends OutputStream {
189
190 @Override
191 public void write(int i) throws IOException {
192 }
193 }
194
195 static class LocalInputStream extends InputStream {
196
197 @Override
198 public int read() throws IOException {
199 return 0;
200 }
201 }
202 }