| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.tests.internal.localstore; |
| |
| import java.io.*; |
| import java.util.ArrayList; |
| import java.util.List; |
| import junit.framework.Test; |
| import junit.framework.TestSuite; |
| import org.eclipse.core.internal.localstore.*; |
| import org.eclipse.core.internal.resources.Workspace; |
| import org.eclipse.core.runtime.IPath; |
| |
| public class SafeChunkyInputOutputStreamTest extends LocalStoreTest { |
| protected File temp; |
| |
| private List<SafeChunkyOutputStream> streams; |
| |
| private File target; |
| |
| public SafeChunkyInputOutputStreamTest() { |
| super(); |
| } |
| |
| public SafeChunkyInputOutputStreamTest(String name) { |
| super(name); |
| } |
| |
| protected boolean compare(byte[] source, byte[] target1) { |
| assertEquals(source.length, target1.length); |
| for (int i = 0; i < target1.length; i++) { |
| assertEquals(source[i], target1[i]); |
| } |
| return true; |
| } |
| |
| protected byte[] merge(byte[] b1, byte[] b2) { |
| byte[] result = new byte[b1.length + b2.length]; |
| for (int i = 0; i < b1.length; i++) { |
| result[i] = b1[i]; |
| } |
| for (int i = 0; i < b2.length; i++) { |
| result[b1.length + i] = b2[i]; |
| } |
| return result; |
| } |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| streams = new ArrayList<>(); |
| |
| IPath location = getRandomLocation(); |
| temp = location.append("temp").toFile(); |
| temp.mkdirs(); |
| assertTrue("could not create temp directory", temp.isDirectory()); |
| target = new File(temp, "target"); |
| } |
| |
| public static Test suite() { |
| return new TestSuite(SafeChunkyInputOutputStreamTest.class); |
| } |
| |
| @Override |
| protected void tearDown() throws Exception { |
| for (SafeChunkyOutputStream stream : streams) { |
| try { |
| stream.close(); |
| } catch (Exception e) { |
| // ignore |
| } |
| } |
| ensureDoesNotExistInFileSystem(temp.getParentFile()); |
| super.tearDown(); |
| } |
| |
| public void testBufferLimit() throws Exception { |
| Workspace.clear(target); // make sure there was nothing here before |
| assertTrue(!target.exists()); |
| |
| // use only one chunk but bigger than the buffer |
| int bufferSize = 10024; |
| byte[] chunk = getBigContents(bufferSize); |
| try (SafeChunkyOutputStream output = new SafeChunkyOutputStream(target)) { |
| output.write(chunk); |
| output.succeed(); |
| } |
| |
| // read chunks |
| try (SafeChunkyInputStream input = new SafeChunkyInputStream(target)) { |
| byte[] read = new byte[chunk.length]; |
| assertEquals(chunk.length, input.read(read)); |
| assertTrue(compare(chunk, read)); |
| } |
| Workspace.clear(target); // make sure there was nothing here before |
| } |
| |
| public void testFailure() throws Exception { |
| Workspace.clear(target); // make sure there was nothing here before |
| assertTrue(!target.exists()); |
| |
| // misc |
| byte[] fakeEnd = new byte[ILocalStoreConstants.END_CHUNK.length]; |
| System.arraycopy(ILocalStoreConstants.END_CHUNK, 0, fakeEnd, 0, ILocalStoreConstants.END_CHUNK.length); |
| fakeEnd[fakeEnd.length - 1] = 86; |
| |
| // write chunks |
| byte[] chunk1 = getRandomString().getBytes(); |
| byte[] chunk2 = getRandomString().getBytes(); |
| byte[] chunk3 = getRandomString().getBytes(); |
| byte[] chunk4 = getRandomString().getBytes(); |
| byte[] chunk5 = getRandomString().getBytes(); |
| byte[] chunk6 = getRandomString().getBytes(); |
| SafeChunkyOutputStream output = new SafeChunkyOutputStream(target); |
| try { |
| output.write(chunk1); |
| output.succeed(); |
| doNothing(output); |
| output = new SafeChunkyOutputStream(target); |
| // fake failure |
| output.write(chunk2); |
| output.write(ILocalStoreConstants.BEGIN_CHUNK); // another begin |
| output.succeed(); |
| // |
| doNothing(output); |
| output = new SafeChunkyOutputStream(target); |
| output.write(chunk3); |
| output.succeed(); |
| doNothing(output); |
| output = new SafeChunkyOutputStream(target); |
| // fake failure |
| output.write(chunk4); |
| output.write(ILocalStoreConstants.END_CHUNK); // another end |
| output.succeed(); |
| doNothing(output); |
| // |
| output = new SafeChunkyOutputStream(target); |
| output.write(chunk5); |
| output.succeed(); |
| // fake failure |
| output.write(fakeEnd); |
| output.write(chunk6); |
| output.succeed(); |
| } finally { |
| output.close(); |
| } |
| |
| // read chunks |
| try (SafeChunkyInputStream input = new SafeChunkyInputStream(target)) { |
| byte[] read1 = new byte[chunk1.length]; |
| // byte[] read2 = new byte[chunk2.length]; |
| byte[] read3 = new byte[chunk3.length]; |
| byte[] read4 = new byte[chunk4.length]; |
| byte[] read5 = new byte[chunk5.length]; |
| byte[] read6 = new byte[fakeEnd.length + chunk6.length]; |
| assertEquals(chunk1.length, input.read(read1)); |
| // assert("3.1", input.read(read2) == chunk2.length); |
| assertEquals(chunk3.length, input.read(read3)); |
| assertEquals(chunk4.length, input.read(read4)); |
| assertEquals(chunk5.length, input.read(read5)); |
| assertEquals((fakeEnd.length + chunk6.length), input.read(read6)); |
| assertTrue(compare(chunk1, read1)); |
| // assert("3.7", compare(chunk2, read2)); |
| assertTrue(compare(chunk3, read3)); |
| assertTrue(compare(chunk4, read4)); |
| assertTrue(compare(chunk5, read5)); |
| byte[] expected = merge(fakeEnd, chunk6); |
| assertTrue(compare(expected, read6)); |
| } |
| } |
| |
| /** |
| * This method is used to trick the java compiler to avoid reporting |
| * a warning that the stream was not closed. In this test we are intentionally |
| * not closing the stream to test recovery from failure. |
| */ |
| private void doNothing(SafeChunkyOutputStream output) { |
| streams.add(output); |
| } |
| |
| public void testAlmostEmpty() throws Exception { |
| Workspace.clear(target); // make sure there was nothing here before |
| assertTrue(!target.exists()); |
| |
| // open the file but don't write anything. |
| try (SafeChunkyOutputStream output = new SafeChunkyOutputStream(target)) { |
| output.close(); |
| } |
| |
| try (DataInputStream input = new DataInputStream(new SafeChunkyInputStream(target))) { |
| input.readUTF(); |
| fail("Should throw EOFException"); |
| } catch (EOFException e) { |
| // should hit here |
| } |
| } |
| |
| public void testSimple() throws Exception { |
| Workspace.clear(target); // make sure there was nothing here before |
| assertTrue(!target.exists()); |
| |
| // write chunks |
| byte[] chunk1 = getRandomString().getBytes(); |
| byte[] chunk2 = getRandomString().getBytes(); |
| byte[] chunk3 = getRandomString().getBytes(); |
| byte[] chunk4 = getRandomString().getBytes(); |
| byte[] chunk5 = getRandomString().getBytes(); |
| try (SafeChunkyOutputStream output = new SafeChunkyOutputStream(target)) { |
| output.write(chunk1); |
| output.succeed(); |
| output.write(chunk2); |
| output.succeed(); |
| output.write(chunk3); |
| output.succeed(); |
| output.write(chunk4); |
| output.succeed(); |
| output.write(chunk5); |
| output.succeed(); |
| } |
| |
| // read chunks |
| try (SafeChunkyInputStream input = new SafeChunkyInputStream(target)) { |
| byte[] read1 = new byte[chunk1.length]; |
| byte[] read2 = new byte[chunk2.length]; |
| byte[] read3 = new byte[chunk3.length]; |
| byte[] read4 = new byte[chunk4.length]; |
| byte[] read5 = new byte[chunk5.length]; |
| assertEquals(chunk1.length, input.read(read1)); |
| assertEquals(chunk2.length, input.read(read2)); |
| assertEquals(chunk3.length, input.read(read3)); |
| assertEquals(chunk4.length, input.read(read4)); |
| assertEquals(chunk5.length, input.read(read5)); |
| assertTrue(compare(chunk1, read1)); |
| assertTrue(compare(chunk2, read2)); |
| assertTrue(compare(chunk3, read3)); |
| assertTrue(compare(chunk4, read4)); |
| assertTrue(compare(chunk5, read5)); |
| } finally { |
| Workspace.clear(target); // make sure there was nothing here before |
| } |
| } |
| } |