1 /* 2 * Copyright (c) 2011, 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 7087549 27 * @summary Test custom options with newInputStream. 28 * @author Brandon Passanisi 29 * @library .. 30 * @build CustomOptions PassThroughFileSystem 31 * @run main CustomOptions 32 */ 33 34 import java.io.IOException; 35 import java.io.InputStream; 36 import java.net.URI; 37 import java.nio.file.*; 38 import java.nio.file.attribute.FileAttribute; 39 import java.nio.file.spi.FileSystemProvider; 40 import java.nio.channels.SeekableByteChannel; 41 import java.util.Collections; 42 import java.util.Set; 43 import java.util.Map; 44 45 public class CustomOptions { 46 47 // Create a custom option 48 static enum CustomOption implements OpenOption { 49 IGNORE, 50 } 51 52 // number of times that IGNORE option is observed 53 static int ignoreCount; 54 55 // A pass through provider that supports a custom open option 56 static class MyCustomProvider extends PassThroughFileSystem.PassThroughProvider { 57 public MyCustomProvider() { } 58 59 @Override 60 public SeekableByteChannel newByteChannel(Path path, 61 Set<? extends OpenOption> options, 62 FileAttribute<?>... attrs) 63 throws IOException 64 { 65 if (options.contains(CustomOption.IGNORE)) { 66 ignoreCount++; 67 options.remove(CustomOption.IGNORE); 68 } 69 return super.newByteChannel(path, options, attrs); 70 } 71 } 72 73 public static void main(String[] args) throws Exception { 74 FileSystemProvider provider = new MyCustomProvider(); 75 Map<String,?> env = Collections.emptyMap(); 76 URI uri = URI.create("pass:///"); 77 FileSystem fs = provider.newFileSystem(uri, env); 78 79 // Create temp dir for testing 80 Path dir = TestUtil.createTemporaryDirectory(); 81 try { 82 83 // Create temp file for testing 84 Path path = fs.getPath(dir.resolve("foo").toString()); 85 Files.createFile(path); 86 87 // Test custom option 88 Files.newInputStream(path, CustomOption.IGNORE).close(); 89 if (ignoreCount != 1) 90 throw new RuntimeException("IGNORE option not passed through"); 91 92 // Test null option 93 try { 94 Files.newInputStream(path, new OpenOption[] { null }).close(); 95 throw new RuntimeException("NullPointerException expected"); 96 } catch (NullPointerException ignore) { } 97 98 // Test unsupported options 99 try { 100 Files.newInputStream(path, StandardOpenOption.WRITE).close(); 101 throw new RuntimeException("UnsupportedOperationException expected"); 102 } catch (UnsupportedOperationException uoe) { } 103 try { 104 Files.newInputStream(path, StandardOpenOption.APPEND).close(); 105 throw new RuntimeException("UnsupportedOperationException expected"); 106 } catch (UnsupportedOperationException uoe) { } 107 108 } finally { 109 // Cleanup 110 TestUtil.removeAll(dir); 111 } 112 } 113 }