| /* |
| * Copyright (c) 2006, 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 4679743 |
| * @summary Test basic functionality of DeflaterInputStream and InflaterOutputStream |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| import java.util.zip.*; |
| |
| public class DeflateIn_InflateOut { |
| private static byte[] data = new byte[1024 * 1024]; |
| |
| private static ByteArrayInputStream bais; |
| private static DeflaterInputStream dis; |
| |
| private static ByteArrayOutputStream baos; |
| private static InflaterOutputStream ios; |
| |
| private static void reset() { |
| new Random(new Date().getTime()).nextBytes(data); |
| |
| bais = new ByteArrayInputStream(data); |
| dis = new DeflaterInputStream(bais); |
| |
| baos = new ByteArrayOutputStream(); |
| ios = new InflaterOutputStream(baos); |
| } |
| |
| /** Check byte arrays read/write. */ |
| private static void ArrayReadWrite() throws Throwable { |
| byte[] buf = new byte[512]; |
| |
| reset(); |
| check(dis.available() == 1); |
| for (;;) { |
| int len = dis.read(buf, 0, buf.length); |
| if (len < 0) { |
| break; |
| } else { |
| ios.write(buf, 0, len); |
| } |
| } |
| check(dis.available() == 0); |
| ios.close(); |
| check(Arrays.equals(data, baos.toByteArray())); |
| } |
| |
| /** Check byte arrays read, single byte write */ |
| private static void ArrayReadByteWrite() throws Throwable { |
| byte[] buf = new byte[512]; |
| |
| reset(); |
| for (;;) { |
| int len = dis.read(buf, 0, buf.length); |
| if (len <= 0) { |
| break; |
| } else { |
| for (int i = 0; i < len; i++) { |
| byte x = (byte) (buf[i] & 0xff); |
| ios.write(x); |
| } |
| } |
| } |
| check(dis.available() == 0); |
| ios.close(); |
| check(Arrays.equals(data, baos.toByteArray())); |
| } |
| |
| /** Check single byte read, byte array write. |
| * <p> |
| * Note that this test relies on the vaule from DeflaterInputStream.read() |
| * to determine when to stop reading. |
| */ |
| private static void ByteReadArrayWrite() throws Throwable { |
| byte[] buf = new byte[8192]; |
| int off = 0; |
| |
| reset(); |
| int datum = dis.read(); |
| while (datum != -1) { |
| if (off == 8192) { |
| ios.write(buf, 0, off); |
| off = 0; |
| } |
| buf[off++] = (byte) (datum & 0xff); |
| datum = dis.read(); |
| } |
| if (off > 0) { |
| ios.write(buf, 0, off); |
| } |
| ios.close(); |
| check(Arrays.equals(data, baos.toByteArray())); |
| } |
| |
| /** Check single byte read/write. |
| * <p> |
| * Note that this test relies on DeflaterInputStream.available() to |
| * determine when to stop reading. |
| */ |
| private static void ByteReadByteWrite() throws Throwable { |
| byte[] buf = new byte[512]; |
| boolean reachEOF = false; |
| |
| reset(); |
| while (dis.available() == 1) { |
| int datum = dis.read(); |
| if (datum == -1) { |
| reachEOF = true; |
| } else { |
| if (datum < 0 || datum > 255) { |
| fail("datum out of range: " + datum); |
| } |
| ios.write(datum); |
| } |
| } |
| dis.close(); |
| ios.close(); |
| check(data[0] == baos.toByteArray()[0]); |
| } |
| |
| /** Check skip(). */ |
| private static void SkipBytes() throws Throwable { |
| byte[] buf = new byte[512]; |
| int numReadable = 0; |
| |
| // Count number of bytes that are read |
| reset(); |
| check(dis.available() == 1); |
| for (;;) { |
| int count = dis.read(buf, 0, buf.length); |
| if (count < 0) { |
| break; |
| } else { |
| numReadable += count; |
| } |
| } |
| check(dis.available() == 0); |
| |
| // Verify that skipping the first several bytes works. |
| reset(); |
| int numNotSkipped = 0; |
| int numSkipBytes = 2053; // arbitrarily chosen prime |
| check(dis.skip(numSkipBytes) == numSkipBytes); |
| for (int i = 0; ; i++) { |
| int count = dis.read(buf, 0, buf.length); |
| if (count < 0) { |
| break; |
| } else { |
| numNotSkipped += count; |
| } |
| } |
| check(numNotSkipped + numSkipBytes == numReadable); |
| |
| // Verify that skipping some bytes mid-stream works. |
| reset(); |
| numNotSkipped = 0; |
| numSkipBytes = 8887; // arbitrarily chosen prime |
| for (int i = 0; ; i++) { |
| if (i == 13) { // Arbitrarily chosen |
| check(dis.skip(numSkipBytes) == numSkipBytes); |
| } else { |
| int count = dis.read(buf, 0, buf.length); |
| if (count < 0) { |
| break; |
| } else { |
| numNotSkipped += count; |
| } |
| } |
| } |
| check(numNotSkipped + numSkipBytes == numReadable); |
| |
| // Verify that skipping the last N bytes works. |
| reset(); |
| numNotSkipped = 0; |
| numSkipBytes = 6449; // arbitrarily chosen prime |
| for (int i = 0; ; i++) { |
| if (numNotSkipped + numSkipBytes > numReadable) { |
| numSkipBytes = numReadable - numNotSkipped; |
| check(dis.skip(numSkipBytes) == numSkipBytes); |
| check(dis.read(buf, 0, buf.length) == -1); |
| check(dis.available() == 0); |
| } else { |
| int count = dis.read(buf, 0, buf.length); |
| if (count < 0) { |
| break; |
| } else { |
| numNotSkipped += count; |
| } |
| } |
| } |
| check(numNotSkipped + numSkipBytes == numReadable); |
| } |
| |
| |
| public static void realMain(String[] args) throws Throwable { |
| ArrayReadWrite(); |
| |
| ArrayReadByteWrite(); |
| |
| ByteReadArrayWrite(); |
| |
| ByteReadByteWrite(); |
| |
| SkipBytes(); |
| } |
| |
| //--------------------- Infrastructure --------------------------- |
| static volatile int passed = 0, failed = 0; |
| static void pass() {passed++;} |
| static void fail() {failed++; Thread.dumpStack();} |
| static void fail(String msg) {System.out.println(msg); fail();} |
| static void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| static void check(boolean cond) {if (cond) pass(); else fail();} |
| static void equal(Object x, Object y) { |
| if (x == null ? y == null : x.equals(y)) pass(); |
| else fail(x + " not equal to " + y);} |
| public static void main(String[] args) throws Throwable { |
| try {realMain(args);} catch (Throwable t) {unexpected(t);} |
| System.out.println("\nPassed = " + passed + " failed = " + failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| } |