| /* |
| * Copyright (c) 2011, 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. |
| */ |
| |
| import java.io.*; |
| |
| /** |
| * @test |
| * @bug 7015589 8054565 |
| * @summary Test that buffering streams are considered closed even when the |
| * close or flush from the underlying stream fails. |
| */ |
| |
| public class FailingFlushAndClose { |
| |
| static int failed; |
| |
| static void fail(String msg) { |
| System.err.println("FAIL: " + msg); |
| failed++; |
| } |
| |
| static void failWithIOE(String msg) throws IOException { |
| fail(msg); |
| throw new IOException(msg); |
| } |
| |
| static class FailingCloseInputStream extends InputStream { |
| boolean closed; |
| @Override |
| public int read()throws IOException { |
| if (closed) |
| failWithIOE("input stream is closed"); |
| return 1; |
| } |
| @Override |
| public void close() throws IOException { |
| if (!closed) { |
| closed = true; |
| throw new IOException("close failed"); |
| } |
| } |
| } |
| |
| static class FailingCloseOutputStream extends OutputStream { |
| boolean closed; |
| @Override |
| public void write(int b) throws IOException { |
| if (closed) |
| failWithIOE("output stream is closed"); |
| } |
| @Override |
| public void flush() throws IOException { |
| if (closed) |
| failWithIOE("output stream is closed"); |
| } |
| @Override |
| public void close() throws IOException { |
| if (!closed) { |
| closed = true; |
| throw new IOException("close failed"); |
| } |
| } |
| } |
| |
| static class FailingFlushOutputStream extends OutputStream { |
| boolean closed; |
| @Override |
| public void write(int b) throws IOException { |
| if (closed) |
| failWithIOE("output stream is closed"); |
| } |
| @Override |
| public void flush() throws IOException { |
| if (closed) { |
| failWithIOE("output stream is closed"); |
| } else { |
| throw new IOException("flush failed"); |
| } |
| } |
| @Override |
| public void close() throws IOException { |
| closed = true; |
| } |
| } |
| |
| static class FailingCloseReader extends Reader { |
| boolean closed; |
| @Override |
| public int read(char[] cbuf, int off, int len) throws IOException { |
| if (closed) |
| failWithIOE("reader is closed"); |
| return 1; |
| } |
| @Override |
| public void close() throws IOException { |
| if (!closed) { |
| closed = true; |
| throw new IOException("close failed"); |
| } |
| } |
| } |
| |
| static class FailingCloseWriter extends Writer { |
| boolean closed; |
| @Override |
| public void write(char[] cbuf, int off, int len) throws IOException { |
| if (closed) |
| failWithIOE("writer is closed"); |
| } |
| @Override |
| public void flush() throws IOException { |
| if (closed) |
| failWithIOE("writer is closed"); |
| } |
| @Override |
| public void close() throws IOException { |
| if (!closed) { |
| closed = true; |
| throw new IOException("close failed"); |
| } |
| } |
| } |
| |
| static class FailingFlushWriter extends Writer { |
| boolean closed; |
| @Override |
| public void write(char[] cbuf, int off, int len) throws IOException { |
| if (closed) |
| failWithIOE("writer is closed"); |
| } |
| @Override |
| public void flush() throws IOException { |
| if (closed) { |
| failWithIOE("writer is closed"); |
| } else { |
| throw new IOException("flush failed"); |
| } |
| } |
| @Override |
| public void close() throws IOException { |
| if (!closed) { |
| closed = true; |
| throw new IOException("close failed"); |
| } |
| } |
| } |
| |
| static InputStream testFailingClose(InputStream in) throws IOException { |
| System.out.println(in.getClass()); |
| in.read(new byte[100]); |
| try { |
| in.close(); |
| fail("close did not fail"); |
| } catch (IOException expected) { } |
| try { |
| in.read(new byte[100]); |
| fail("read did not fail"); |
| } catch (IOException expected) { } |
| return in; |
| } |
| |
| static OutputStream testFailingClose(OutputStream out) throws IOException { |
| System.out.println(out.getClass()); |
| out.write(1); |
| try { |
| out.close(); |
| fail("close did not fail"); |
| } catch (IOException expected) { } |
| try { |
| out.write(1); |
| if (!(out instanceof BufferedOutputStream)) |
| fail("write did not fail"); |
| } catch (IOException expected) { } |
| return out; |
| } |
| |
| static OutputStream testFailingFlush(OutputStream out) throws IOException { |
| System.out.println(out.getClass()); |
| out.write(1); |
| try { |
| out.flush(); |
| fail("flush did not fail"); |
| } catch (IOException expected) { } |
| if (out instanceof BufferedOutputStream) { |
| out.write(1); |
| try { |
| out.close(); |
| fail("close did not fail"); |
| } catch (IOException expected) { } |
| } |
| return out; |
| } |
| |
| static void closeAgain(InputStream in) throws IOException { |
| // assert the given stream should already be closed. |
| try { |
| in.close(); |
| } catch (IOException expected) { |
| fail("unexpected IOException from subsequent close"); |
| } |
| } |
| static void closeAgain(OutputStream out) throws IOException { |
| // assert the given stream should already be closed. |
| try { |
| out.close(); |
| } catch (IOException expected) { |
| fail("unexpected IOException from subsequent close"); |
| } |
| } |
| |
| static Reader testFailingClose(Reader r) throws IOException { |
| System.out.println(r.getClass()); |
| r.read(new char[100]); |
| try { |
| r.close(); |
| fail("close did not fail"); |
| } catch (IOException expected) { } |
| try { |
| r.read(new char[100]); |
| fail("read did not fail"); |
| } catch (IOException expected) { } |
| return r; |
| } |
| |
| static Writer testFailingClose(Writer w) throws IOException { |
| System.out.println(w.getClass()); |
| w.write("message"); |
| try { |
| w.close(); |
| fail("close did not fail"); |
| } catch (IOException expected) { } |
| try { |
| w.write("another message"); |
| fail("write did not fail"); |
| } catch (IOException expected) { } |
| return w; |
| } |
| |
| static Writer testFailingFlush(Writer w) throws IOException { |
| System.out.println(w.getClass()); |
| w.write("message"); |
| try { |
| w.flush(); |
| fail("flush did not fail"); |
| } catch (IOException expected) { } |
| if (w instanceof BufferedWriter) { |
| // assume this message will be buffered |
| w.write("another message"); |
| try { |
| w.close(); |
| fail("close did not fail"); |
| } catch (IOException expected) { } |
| } |
| return w; |
| } |
| |
| static Reader closeAgain(Reader r) throws IOException { |
| // assert the given stream should already be closed. |
| try { |
| r.close(); |
| } catch (IOException expected) { |
| fail("unexpected IOException from subsequent close"); |
| } |
| return r; |
| } |
| static Writer closeAgain(Writer w) throws IOException { |
| // assert the given stream should already be closed. |
| try { |
| w.close(); |
| } catch (IOException expected) { |
| fail("unexpected IOException from subsequent close"); |
| } |
| return w; |
| } |
| |
| public static void main(String[] args) throws IOException { |
| |
| closeAgain(testFailingClose(new BufferedInputStream(new FailingCloseInputStream()))); |
| closeAgain(testFailingClose(new BufferedOutputStream(new FailingCloseOutputStream()))); |
| |
| closeAgain(testFailingClose(new BufferedReader(new FailingCloseReader()))); |
| closeAgain(testFailingClose(new BufferedWriter(new FailingCloseWriter()))); |
| |
| closeAgain(testFailingFlush(new BufferedOutputStream(new FailingFlushOutputStream()))); |
| closeAgain(testFailingFlush(new BufferedWriter(new FailingFlushWriter()))); |
| |
| if (failed > 0) |
| throw new RuntimeException(failed + " test(s) failed - see log for details"); |
| } |
| } |