| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package libcore.java.util.zip; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.PipedInputStream; |
| import java.io.PipedOutputStream; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.zip.DeflaterOutputStream; |
| import java.util.zip.InflaterInputStream; |
| import junit.framework.TestCase; |
| |
| public class DeflaterOutputStreamTest extends TestCase { |
| |
| public void testSyncFlushEnabled() throws Exception { |
| InflaterInputStream in = createInflaterStream(true); |
| assertEquals(1, in.read()); |
| assertEquals(2, in.read()); |
| assertEquals(3, in.read()); |
| } |
| |
| public void testSyncFlushDisabled() throws Exception { |
| InflaterInputStream in = createInflaterStream(false); |
| try { |
| in.read(); |
| fail(); |
| } catch (IOException expected) { |
| } |
| } |
| |
| /** |
| * Creates an optionally-flushing deflater stream, writes some bytes to it, |
| * and flushes it. Returns an inflater stream that reads this deflater's |
| * output. |
| * |
| * <p>These bytes are written on a separate thread so that when the inflater |
| * stream is read, that read will fail when no bytes are available. Failing |
| * takes 3 seconds, co-ordinated by PipedInputStream's 'broken pipe' |
| * timeout. The 3 second delay is unfortunate but seems to be the easiest |
| * way demonstrate that data is unavailable. Ie. other techniques will cause |
| * the dry read to block indefinitely. |
| */ |
| private InflaterInputStream createInflaterStream(final boolean flushing) |
| throws Exception { |
| ExecutorService executor = Executors.newSingleThreadExecutor(); |
| final PipedOutputStream pout = new PipedOutputStream(); |
| PipedInputStream pin = new PipedInputStream(pout); |
| |
| executor.submit(new Callable<Void>() { |
| public Void call() throws Exception { |
| OutputStream out = new DeflaterOutputStream(pout, flushing); |
| out.write(1); |
| out.write(2); |
| out.write(3); |
| out.flush(); |
| return null; |
| } |
| }).get(); |
| executor.shutdown(); |
| |
| return new InflaterInputStream(pin); |
| } |
| } |