311 lines
9.5 KiB
Java
311 lines
9.5 KiB
Java
/*
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* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.*;
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/**
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* @test
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* @bug 7015589 8054565
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* @summary Test that buffering streams are considered closed even when the
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* close or flush from the underlying stream fails.
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*/
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public class FailingFlushAndClose {
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static int failed;
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static void fail(String msg) {
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System.err.println("FAIL: " + msg);
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failed++;
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}
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static void failWithIOE(String msg) throws IOException {
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fail(msg);
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throw new IOException(msg);
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}
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static class FailingCloseInputStream extends InputStream {
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boolean closed;
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@Override
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public int read()throws IOException {
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if (closed)
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failWithIOE("input stream is closed");
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return 1;
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}
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@Override
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public void close() throws IOException {
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if (!closed) {
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closed = true;
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throw new IOException("close failed");
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}
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}
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}
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static class FailingCloseOutputStream extends OutputStream {
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boolean closed;
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@Override
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public void write(int b) throws IOException {
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if (closed)
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failWithIOE("output stream is closed");
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}
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@Override
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public void flush() throws IOException {
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if (closed)
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failWithIOE("output stream is closed");
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}
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@Override
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public void close() throws IOException {
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if (!closed) {
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closed = true;
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throw new IOException("close failed");
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}
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}
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}
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static class FailingFlushOutputStream extends OutputStream {
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boolean closed;
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@Override
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public void write(int b) throws IOException {
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if (closed)
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failWithIOE("output stream is closed");
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}
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@Override
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public void flush() throws IOException {
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if (closed) {
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failWithIOE("output stream is closed");
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} else {
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throw new IOException("flush failed");
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}
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}
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@Override
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public void close() throws IOException {
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closed = true;
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}
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}
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static class FailingCloseReader extends Reader {
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boolean closed;
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@Override
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public int read(char[] cbuf, int off, int len) throws IOException {
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if (closed)
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failWithIOE("reader is closed");
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return 1;
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}
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@Override
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public void close() throws IOException {
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if (!closed) {
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closed = true;
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throw new IOException("close failed");
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}
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}
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}
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static class FailingCloseWriter extends Writer {
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boolean closed;
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@Override
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public void write(char[] cbuf, int off, int len) throws IOException {
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if (closed)
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failWithIOE("writer is closed");
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}
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@Override
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public void flush() throws IOException {
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if (closed)
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failWithIOE("writer is closed");
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}
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@Override
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public void close() throws IOException {
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if (!closed) {
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closed = true;
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throw new IOException("close failed");
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}
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}
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}
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static class FailingFlushWriter extends Writer {
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boolean closed;
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@Override
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public void write(char[] cbuf, int off, int len) throws IOException {
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if (closed)
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failWithIOE("writer is closed");
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}
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@Override
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public void flush() throws IOException {
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if (closed) {
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failWithIOE("writer is closed");
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} else {
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throw new IOException("flush failed");
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}
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}
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@Override
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public void close() throws IOException {
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if (!closed) {
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closed = true;
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throw new IOException("close failed");
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}
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}
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}
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static InputStream testFailingClose(InputStream in) throws IOException {
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System.out.println(in.getClass());
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in.read(new byte[100]);
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try {
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in.close();
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fail("close did not fail");
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} catch (IOException expected) { }
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try {
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in.read(new byte[100]);
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fail("read did not fail");
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} catch (IOException expected) { }
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return in;
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}
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static OutputStream testFailingClose(OutputStream out) throws IOException {
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System.out.println(out.getClass());
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out.write(1);
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try {
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out.close();
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fail("close did not fail");
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} catch (IOException expected) { }
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try {
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out.write(1);
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if (!(out instanceof BufferedOutputStream))
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fail("write did not fail");
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} catch (IOException expected) { }
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return out;
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}
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static OutputStream testFailingFlush(OutputStream out) throws IOException {
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System.out.println(out.getClass());
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out.write(1);
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try {
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out.flush();
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fail("flush did not fail");
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} catch (IOException expected) { }
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if (out instanceof BufferedOutputStream) {
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out.write(1);
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try {
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out.close();
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fail("close did not fail");
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} catch (IOException expected) { }
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}
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return out;
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}
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static void closeAgain(InputStream in) throws IOException {
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// assert the given stream should already be closed.
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try {
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in.close();
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} catch (IOException expected) {
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fail("unexpected IOException from subsequent close");
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}
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}
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static void closeAgain(OutputStream out) throws IOException {
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// assert the given stream should already be closed.
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try {
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out.close();
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} catch (IOException expected) {
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fail("unexpected IOException from subsequent close");
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}
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}
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static Reader testFailingClose(Reader r) throws IOException {
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System.out.println(r.getClass());
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r.read(new char[100]);
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try {
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r.close();
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fail("close did not fail");
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} catch (IOException expected) { }
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try {
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r.read(new char[100]);
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fail("read did not fail");
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} catch (IOException expected) { }
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return r;
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}
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static Writer testFailingClose(Writer w) throws IOException {
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System.out.println(w.getClass());
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w.write("message");
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try {
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w.close();
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fail("close did not fail");
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} catch (IOException expected) { }
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try {
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w.write("another message");
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fail("write did not fail");
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} catch (IOException expected) { }
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return w;
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}
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static Writer testFailingFlush(Writer w) throws IOException {
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System.out.println(w.getClass());
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w.write("message");
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try {
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w.flush();
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fail("flush did not fail");
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} catch (IOException expected) { }
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if (w instanceof BufferedWriter) {
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// assume this message will be buffered
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w.write("another message");
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try {
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w.close();
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fail("close did not fail");
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} catch (IOException expected) { }
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}
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return w;
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}
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static Reader closeAgain(Reader r) throws IOException {
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// assert the given stream should already be closed.
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try {
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r.close();
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} catch (IOException expected) {
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fail("unexpected IOException from subsequent close");
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}
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return r;
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}
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static Writer closeAgain(Writer w) throws IOException {
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// assert the given stream should already be closed.
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try {
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w.close();
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} catch (IOException expected) {
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fail("unexpected IOException from subsequent close");
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}
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return w;
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}
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public static void main(String[] args) throws IOException {
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closeAgain(testFailingClose(new BufferedInputStream(new FailingCloseInputStream())));
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closeAgain(testFailingClose(new BufferedOutputStream(new FailingCloseOutputStream())));
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closeAgain(testFailingClose(new BufferedReader(new FailingCloseReader())));
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closeAgain(testFailingClose(new BufferedWriter(new FailingCloseWriter())));
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closeAgain(testFailingFlush(new BufferedOutputStream(new FailingFlushOutputStream())));
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closeAgain(testFailingFlush(new BufferedWriter(new FailingFlushWriter())));
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if (failed > 0)
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throw new RuntimeException(failed + " test(s) failed - see log for details");
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}
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}
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