| /* |
| * Copyright (c) 2006, 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 4181483 |
| * @summary Test if InputStream methods will check if the stream |
| * has been closed. |
| */ |
| |
| import java.io.*; |
| |
| public enum OpsAfterClose { |
| |
| READ { boolean check(InputStream is) { |
| try { |
| int read = is.read(); |
| System.out.println("read returns: " + read); |
| } catch (IOException io) { |
| System.out.print("Excep Msg: "+ io.getMessage() + ", "); |
| return true; |
| } |
| return false; |
| } }, |
| |
| READ_BUF { boolean check(InputStream is) { |
| try { |
| byte buf[] = new byte[2]; |
| int read = is.read(buf); |
| System.out.println("read(buf) returns: " + read); |
| } catch (IOException io) { |
| System.out.print("Excep Msg: "+ io.getMessage() + ", "); |
| return true; |
| } |
| return false; |
| } }, |
| READ_BUF_OFF { boolean check(InputStream is) { |
| try { |
| byte buf[] = new byte[2]; |
| int len = 1; |
| int read = is.read(buf, 0, len); |
| System.out.println("read(buf, 0, len) returns: " + read); |
| } catch (IOException io) { |
| System.out.print("Excep Msg: "+ io.getMessage() + ", "); |
| return true; |
| } |
| return false; |
| } }, |
| AVAILABLE { boolean check(InputStream is) { |
| try { |
| int avail = is.available(); |
| System.out.println("available() returns: " + avail); |
| return false; |
| } catch (IOException io) { |
| System.out.print("Excep Msg: "+ io.getMessage() + ", "); |
| return true; |
| } |
| } }, |
| SKIP { boolean check(InputStream is) { |
| try { |
| long skipped = is.skip(1); |
| System.out.println("skip() returns: " + skipped); |
| } catch (IOException io) { |
| System.out.print("Excep Msg: "+ io.getMessage() + ", "); |
| return true; |
| } |
| return false; |
| } }, |
| MARK { boolean check(InputStream is) { |
| is.mark(20); |
| return true; |
| } }, |
| RESET { boolean check(InputStream is) { |
| try { |
| is.reset(); |
| } catch (IOException io) { |
| System.out.print("Excep Msg: "+ io.getMessage() + ", "); |
| return true; |
| } |
| return false; |
| } }, |
| MARK_SUPPORTED { boolean check(InputStream is) { |
| is.markSupported(); |
| return true; |
| } }, |
| CLOSE { boolean check(InputStream is) { |
| try { |
| is.close(); |
| return true; // No Exception thrown on windows for FileInputStream |
| } catch (IOException io) { |
| System.out.print("Excep Msg: "+ io.getMessage() + ", "); |
| return true; // Exception thrown on solaris and linux for FileInputStream |
| } |
| } }; |
| |
| abstract boolean check(InputStream is); |
| |
| public static void main(String args[]) throws Exception { |
| |
| boolean failed = false; |
| |
| File f = new File(System.getProperty("test.dir", "."), |
| "f.txt"); |
| f.createNewFile(); |
| f.deleteOnExit(); |
| |
| FileInputStream fis = new FileInputStream(f); |
| try { |
| if (testInputStream(fis)) { |
| failed = true; |
| } |
| if (testFileInputStream(fis)) { |
| failed = true; |
| } |
| } finally { |
| fis.close(); |
| } |
| |
| BufferedInputStream bs = new BufferedInputStream( |
| new FileInputStream(f)); |
| try { |
| if (testInputStream(bs)) { |
| failed = true; |
| } |
| } finally { |
| bs.close(); |
| } |
| |
| DataInputStream dis = new DataInputStream( |
| new FileInputStream(f)); |
| try { |
| if (testInputStream(dis)) { |
| failed = true; |
| } |
| } finally { |
| dis.close(); |
| } |
| |
| PushbackInputStream pbis = new PushbackInputStream( |
| new ByteArrayInputStream(new byte[20])); |
| if (testInputStream(pbis)) { |
| failed = true; |
| } |
| |
| if (testPushbackInputStream(pbis)) { |
| failed = true; |
| } |
| |
| PipedInputStream pis = new PipedInputStream(new PipedOutputStream()); |
| if (testInputStream(pis)) { |
| failed = true; |
| } |
| |
| /** |
| * The SequenceInputStream and ObjectInputStream does not throw IOException |
| |
| SequenceInputStream sqis = new SequenceInputStream( |
| new FileInputStream(f), |
| new PipedInputStream(new PipedOutputStream()) |
| ); |
| if (testInputStream(sqis)) { |
| failed = true; |
| } |
| |
| String serStr = "abc"; |
| ObjectOutputStream oos = new ObjectOutputStream( |
| new FileOutputStream(f)); |
| oos.writeObject(serStr); |
| oos.close(); |
| |
| ObjectInputStream ois = new ObjectInputStream( |
| new FileInputStream(f)); |
| if (testInputStream(ois)) { |
| failed = true; |
| } |
| |
| */ |
| |
| if (failed) { |
| throw new Exception( |
| "Some Op for some Stream failed, check the failed status above"); |
| } |
| } |
| |
| private static boolean testInputStream(InputStream is) |
| throws Exception { |
| is.close(); |
| boolean failed = false; |
| boolean result; |
| System.out.println("Testing :" + is); |
| for (OpsAfterClose op : OpsAfterClose.values()) { |
| |
| if (op.equals(AVAILABLE) && (is instanceof PipedInputStream)) { |
| // skip the test as available() returns 0 |
| continue; |
| } |
| |
| result = op.check(is); |
| if (!result) { |
| failed = true; |
| } |
| System.out.println(op + ":" + result); |
| } |
| if (failed) { |
| System.out.println("Test failed for the failed operation{s}" + |
| " above for :" + is); |
| } |
| return failed; |
| } |
| |
| private static boolean testPushbackInputStream(PushbackInputStream pis) |
| throws Exception { |
| boolean failed = false; |
| try { |
| pis.unread(1); |
| System.out.println("Test failed for unread(int):" + pis); |
| failed = true; |
| } catch (IOException io) { |
| System.out.println("UNREAD(int):true"); |
| } |
| |
| byte buf[] = new byte[2]; |
| try { |
| pis.unread(buf, 0, 2); |
| System.out.println("Test failed for unread(buf, offset, len):" + |
| pis); |
| failed = true; |
| } catch (IOException io) { |
| System.out.println("UNREAD(buf, offset, len):true"); |
| } |
| try { |
| pis.unread(buf); |
| System.out.println("Test failed for unread(char[] buf):" + pis); |
| failed = true; |
| } catch (IOException io) { |
| System.out.println("UNREAD(buf):true"); |
| } |
| return failed; |
| } |
| |
| private static boolean testFileInputStream(FileInputStream fis) |
| throws Exception { |
| boolean failed = false; |
| try { |
| fis.getFD(); |
| System.out.println("GetFD: true"); |
| } catch (IOException io) { |
| System.out.println("GetFD: false"); |
| failed = true; |
| } |
| fis.getChannel(); |
| System.out.println("GetChannel: true"); |
| return failed; |
| } |
| } |