| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 org.apache.poi.poifs.filesystem; |
| |
| import java.io.IOException; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.util.Arrays; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.poi.util.IOUtils; |
| import org.apache.poi.poifs.filesystem.POIFSFileSystem; |
| import org.apache.poi.poifs.filesystem.POIFSWriterEvent; |
| import org.apache.poi.poifs.filesystem.POIFSWriterListener; |
| import org.apache.poi.poifs.filesystem.DirectoryEntry; |
| |
| public final class TestEmptyDocument extends TestCase { |
| |
| public void testSingleEmptyDocument() throws IOException { |
| POIFSFileSystem fs = new POIFSFileSystem(); |
| DirectoryEntry dir = fs.getRoot(); |
| dir.createDocument("Foo", new ByteArrayInputStream(new byte[] {})); |
| |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| fs.writeFilesystem(out); |
| new POIFSFileSystem(new ByteArrayInputStream(out.toByteArray())); |
| } |
| |
| public void testSingleEmptyDocumentEvent() throws IOException { |
| POIFSFileSystem fs = new POIFSFileSystem(); |
| DirectoryEntry dir = fs.getRoot(); |
| dir.createDocument("Foo", 0, new POIFSWriterListener() { |
| public void processPOIFSWriterEvent(POIFSWriterEvent event) { |
| System.out.println("written"); |
| } |
| }); |
| |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| fs.writeFilesystem(out); |
| new POIFSFileSystem(new ByteArrayInputStream(out.toByteArray())); |
| } |
| |
| public void testEmptyDocumentWithFriend() throws IOException { |
| POIFSFileSystem fs = new POIFSFileSystem(); |
| DirectoryEntry dir = fs.getRoot(); |
| dir.createDocument("Bar", new ByteArrayInputStream(new byte[] { 0 })); |
| dir.createDocument("Foo", new ByteArrayInputStream(new byte[] {})); |
| |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| fs.writeFilesystem(out); |
| new POIFSFileSystem(new ByteArrayInputStream(out.toByteArray())); |
| } |
| |
| public void testEmptyDocumentEventWithFriend() throws IOException { |
| POIFSFileSystem fs = new POIFSFileSystem(); |
| DirectoryEntry dir = fs.getRoot(); |
| dir.createDocument("Bar", 1, new POIFSWriterListener() { |
| public void processPOIFSWriterEvent(POIFSWriterEvent event) { |
| try { |
| event.getStream().write(0); |
| } catch (IOException exception) { |
| throw new RuntimeException("exception on write: " + exception); |
| } |
| } |
| }); |
| dir.createDocument("Foo", 0, new POIFSWriterListener() { |
| public void processPOIFSWriterEvent(POIFSWriterEvent event) { |
| } |
| }); |
| |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| fs.writeFilesystem(out); |
| new POIFSFileSystem(new ByteArrayInputStream(out.toByteArray())); |
| } |
| |
| public void testEmptyDocumentBug11744() throws Exception { |
| byte[] testData = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }; |
| |
| POIFSFileSystem fs = new POIFSFileSystem(); |
| fs.createDocument(new ByteArrayInputStream(new byte[0]), "Empty"); |
| fs.createDocument(new ByteArrayInputStream(testData), "NotEmpty"); |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| fs.writeFilesystem(out); |
| out.toByteArray(); |
| |
| // This line caused the error. |
| fs = new POIFSFileSystem(new ByteArrayInputStream(out.toByteArray())); |
| |
| DocumentEntry entry = (DocumentEntry) fs.getRoot().getEntry("Empty"); |
| assertEquals("Expected zero size", 0, entry.getSize()); |
| byte[] actualReadbackData; |
| actualReadbackData = IOUtils.toByteArray(new DocumentInputStream(entry)); |
| assertEquals("Expected zero read from stream", 0, actualReadbackData.length); |
| |
| entry = (DocumentEntry) fs.getRoot().getEntry("NotEmpty"); |
| actualReadbackData = IOUtils.toByteArray(new DocumentInputStream(entry)); |
| assertEquals("Expected size was wrong", testData.length, entry.getSize()); |
| assertTrue("Expected different data read from stream", Arrays.equals(testData, |
| actualReadbackData)); |
| } |
| } |