| /* |
| * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| * @bug 4313887 6881498 |
| * @modules java.base/java.lang:open |
| * @summary Miscellenous tests on exceptions in java.nio.file |
| */ |
| |
| import java.nio.file.*; |
| import java.io.*; |
| import java.util.Objects; |
| import java.lang.reflect.*; |
| |
| public class Exceptions { |
| |
| public static void main(String[] args) throws Exception { |
| testFileSystemException(); |
| testDirectoryIteratorException(); |
| } |
| |
| static void testFileSystemException() throws Exception { |
| String thisFile = "source"; |
| String otherFile = "target"; |
| String reason = "Access denied"; |
| |
| // getFile/getOtherFile |
| testFileSystemException(thisFile, otherFile, reason); |
| testFileSystemException(null, otherFile, reason); |
| testFileSystemException(thisFile, null, reason); |
| testFileSystemException(thisFile, otherFile, null); |
| |
| // serialization |
| FileSystemException exc; |
| exc = new FileSystemException(thisFile, otherFile, reason); |
| exc = (FileSystemException)deserialize(serialize(exc)); |
| if (!exc.getFile().equals(thisFile) || !exc.getOtherFile().equals(otherFile)) |
| throw new RuntimeException("Exception not reconstituted completely"); |
| } |
| |
| static void testFileSystemException(String thisFile, |
| String otherFile, |
| String reason) |
| { |
| FileSystemException exc = new FileSystemException(thisFile, otherFile, reason); |
| if (!Objects.equals(thisFile, exc.getFile())) |
| throw new RuntimeException("getFile returned unexpected result"); |
| if (!Objects.equals(otherFile, exc.getOtherFile())) |
| throw new RuntimeException("getOtherFile returned unexpected result"); |
| if (!Objects.equals(reason, exc.getReason())) |
| throw new RuntimeException("getReason returned unexpected result"); |
| } |
| |
| static void testDirectoryIteratorException() throws Exception { |
| // NullPointerException |
| try { |
| new DirectoryIteratorException(null); |
| throw new RuntimeException("NullPointerException expected"); |
| } catch (NullPointerException expected) { } |
| |
| // serialization |
| DirectoryIteratorException exc; |
| exc = new DirectoryIteratorException(new IOException()); |
| exc = (DirectoryIteratorException)deserialize(serialize(exc)); |
| IOException ioe = exc.getCause(); |
| if (ioe == null) |
| throw new RuntimeException("Cause should not be null"); |
| |
| // when deserializing then the cause should be an IOException |
| hackCause(exc, null); |
| try { |
| deserialize(serialize(exc)); |
| throw new RuntimeException("InvalidObjectException expected"); |
| } catch (InvalidObjectException expected) { } |
| |
| hackCause(exc, new RuntimeException()); |
| try { |
| deserialize(serialize(exc)); |
| throw new RuntimeException("InvalidObjectException expected"); |
| } catch (InvalidObjectException expected) { } |
| } |
| |
| |
| // Use reflection to set a Throwable's cause. |
| static void hackCause(Throwable t, Throwable cause) |
| throws NoSuchFieldException, IllegalAccessException |
| { |
| Field f = Throwable.class.getDeclaredField("cause"); |
| f.setAccessible(true); |
| f.set(t, cause); |
| } |
| |
| // Serialize the given object to a byte[] |
| static byte[] serialize(Object o) throws IOException { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ObjectOutputStream oos = new ObjectOutputStream(baos); |
| oos.writeObject(o); |
| oos.close(); |
| return baos.toByteArray(); |
| } |
| |
| // Read an object from its serialized form |
| static Object deserialize(byte[] bytes) |
| throws IOException, ClassNotFoundException |
| { |
| ByteArrayInputStream in = new ByteArrayInputStream(bytes); |
| ObjectInputStream ois = new ObjectInputStream(in); |
| Object result = ois.readObject(); |
| ois.close(); |
| return result; |
| } |
| } |