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DiskFileItemSerializeTest.java
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DiskFileItemSerializeTest.java
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/*
* 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.commons.fileupload2;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.UncheckedIOException;
import org.apache.commons.fileupload2.disk.DiskFileItemFactory;
import org.apache.commons.io.FileUtils;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
/**
* Serialization Unit tests for
* {@link org.apache.commons.fileupload2.disk.DiskFileItem}.
*/
public class DiskFileItemSerializeTest {
// Use a private repo to catch any files left over by tests
private static final File REPO = new File(System.getProperty("java.io.tmpdir"), "diskfileitemrepo");
@BeforeEach
public void setUp() throws Exception {
if (REPO.exists()) {
FileUtils.deleteDirectory(REPO);
}
FileUtils.forceMkdir(REPO);
}
@AfterEach
public void tearDown() throws IOException {
for(final File file : FileUtils.listFiles(REPO, null, true)) {
System.out.println("Found leftover file " + file);
}
FileUtils.deleteDirectory(REPO);
}
/**
* Content type for regular form items.
*/
private static final String textContentType = "text/plain";
/**
* Very low threshold for testing memory versus disk options.
*/
private static final int threshold = 16;
/**
* Helper method to test creation of a field when a repository is used.
*/
public void testInMemoryObject(final byte[] testFieldValueBytes, final File repository) {
final FileItem item = createFileItem(testFieldValueBytes, repository);
// Check state is as expected
assertTrue(item.isInMemory(), "Initial: in memory");
assertEquals(item.getSize(), testFieldValueBytes.length, "Initial: size");
try {
compareBytes("Initial", item.get(), testFieldValueBytes);
} catch (UncheckedIOException e) {
fail("Unexpected IOException", e);
}
item.delete();
}
/**
* Helper method to test creation of a field.
*/
private void testInMemoryObject(final byte[] testFieldValueBytes) {
testInMemoryObject(testFieldValueBytes, REPO);
}
/**
* Test creation of a field for which the amount of data falls below the
* configured threshold.
*/
@Test
public void testBelowThreshold() {
// Create the FileItem
final byte[] testFieldValueBytes = createContentBytes(threshold - 1);
testInMemoryObject(testFieldValueBytes);
}
/**
* Test creation of a field for which the amount of data equals the
* configured threshold.
*/
@Test
public void testThreshold() {
// Create the FileItem
final byte[] testFieldValueBytes = createContentBytes(threshold);
testInMemoryObject(testFieldValueBytes);
}
/**
* Test creation of a field for which the amount of data falls above the
* configured threshold.
*/
@Test
public void testAboveThreshold() {
// Create the FileItem
final byte[] testFieldValueBytes = createContentBytes(threshold + 1);
final FileItem item = createFileItem(testFieldValueBytes);
// Check state is as expected
assertFalse(item.isInMemory(), "Initial: in memory");
assertEquals(item.getSize(), testFieldValueBytes.length, "Initial: size");
try {
compareBytes("Initial", item.get(), testFieldValueBytes);
} catch (UncheckedIOException e) {
fail("Unexpected IOException", e);
}
item.delete();
}
/**
* Test serialization and deserialization when repository is not null.
*/
@Test
public void testValidRepository() {
// Create the FileItem
final byte[] testFieldValueBytes = createContentBytes(threshold);
testInMemoryObject(testFieldValueBytes, REPO);
}
/**
* Test deserialization fails when repository is not valid.
*/
@Test
public void testInvalidRepository() {
// Create the FileItem
final byte[] testFieldValueBytes = createContentBytes(threshold);
final File repository = new File(System.getProperty("java.io.tmpdir"), "file");
final FileItem item = createFileItem(testFieldValueBytes, repository);
assertThrows(IOException.class, () -> deserialize(serialize(item)));
}
/**
* Test deserialization fails when repository contains a null character.
*/
@Test
public void testInvalidRepositoryWithNullChar() {
// Create the FileItem
final byte[] testFieldValueBytes = createContentBytes(threshold);
final File repository = new File(System.getProperty("java.io.tmpdir"), "\0");
final FileItem item = createFileItem(testFieldValueBytes, repository);
assertThrows(IOException.class, () -> deserialize(serialize(item)));
}
/**
* Compare content bytes.
*/
private void compareBytes(final String text, final byte[] origBytes, final byte[] newBytes) {
assertNotNull(origBytes, "origBytes must not be null");
assertNotNull(newBytes, "newBytes must not be null");
assertEquals(origBytes.length, newBytes.length, text + " byte[] length");
for (int i = 0; i < origBytes.length; i++) {
assertEquals(origBytes[i], newBytes[i], text + " byte[" + i + "]");
}
}
/**
* Create content bytes of a specified size.
*/
private byte[] createContentBytes(final int size) {
final StringBuilder buffer = new StringBuilder(size);
byte count = 0;
for (int i = 0; i < size; i++) {
buffer.append(count+"");
count++;
if (count > 9) {
count = 0;
}
}
return buffer.toString().getBytes();
}
/**
* Create a FileItem with the specfied content bytes and repository.
*/
private FileItem createFileItem(final byte[] contentBytes, final File repository) {
final FileItemFactory factory = new DiskFileItemFactory(threshold, repository);
final String textFieldName = "textField";
final FileItem item = factory.createItem(
textFieldName,
textContentType,
true,
"My File Name"
);
try {
final OutputStream os = item.getOutputStream();
os.write(contentBytes);
os.close();
} catch(final IOException e) {
fail("Unexpected IOException" + e);
}
return item;
}
/**
* Create a FileItem with the specfied content bytes.
*/
private FileItem createFileItem(final byte[] contentBytes) {
return createFileItem(contentBytes, REPO);
}
/**
* Do serialization
*/
private ByteArrayOutputStream serialize(final Object target) throws Exception {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(target);
oos.flush();
oos.close();
return baos;
}
/**
* Do deserialization
*/
private Object deserialize(final ByteArrayOutputStream baos) throws Exception {
final ByteArrayInputStream bais =
new ByteArrayInputStream(baos.toByteArray());
final ObjectInputStream ois = new ObjectInputStream(bais);
final Object result = ois.readObject();
bais.close();
return result;
}
}