/*
* 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.jackrabbit.core.persistence.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.Collections;
import java.util.HashSet;
import java.util.Random;
import java.util.Set;
import javax.jcr.PropertyType;
import junit.framework.TestCase;
import org.apache.jackrabbit.core.id.NodeId;
import org.apache.jackrabbit.core.id.PropertyId;
import org.apache.jackrabbit.core.persistence.util.NodePropBundle.PropertyEntry;
import org.apache.jackrabbit.core.util.StringIndex;
import org.apache.jackrabbit.core.value.InternalValue;
import org.apache.jackrabbit.spi.Name;
import org.apache.jackrabbit.spi.NameFactory;
import org.apache.jackrabbit.spi.commons.name.NameFactoryImpl;
/**
* A randomized test for the BundleBinding writer and reader classes.
*/
public class BundleBindingRandomizedTest extends TestCase {
private static final NameFactory factory = NameFactoryImpl.getInstance();
/**
* Tests serialization of a complex bundle.
*/
public void testRandomBundle() throws Exception {
int seed = 0;
for (int i=0; i<100;) {
Random r = new Random(seed++);
NodePropBundle bundle;
try {
bundle = randomBundle(r);
} catch (IllegalArgumentException e) {
continue;
}
try {
if (tryBundleRoundtrip(bundle)) {
i++;
}
} catch (Exception e) {
throw new Exception(
"Error round-tripping bundle with seed " + seed, e);
}
}
}
private static NodePropBundle randomBundle(Random r) {
NodeId id = randomNodeId(r);
NodePropBundle bundle = new NodePropBundle(id);
bundle.setModCount((short) randomSize(r));
if (r.nextInt(10) > 0) {
bundle.setParentId(randomNodeId(r));
}
if (r.nextInt(100) > 0) {
bundle.setNodeTypeName(randomName(r));
}
if (r.nextInt(100) > 0) {
bundle.setMixinTypeNames(randomNameSet(r));
}
if (r.nextInt(10) > 0) {
bundle.setReferenceable(r.nextBoolean());
}
if (r.nextInt(10) > 0) {
bundle.setSharedSet(randomNodeIdSet(r));
}
int count = randomSize(r);
for (int i=0; i<count; i++) {
PropertyEntry p = randomProperty(id, r);
bundle.addProperty(p);
}
count = randomSize(r);
for (int i=0; i<count; i++) {
bundle.addChildNodeEntry(randomName(r), randomNodeId(r));
}
return bundle;
}
private static boolean tryBundleRoundtrip(NodePropBundle bundle)
throws Exception {
BundleBinding binding;
StringIndex index = new StringIndex() {
@Override
public int stringToIndex(String string) {
return 0;
}
@Override
public String indexToString(int idx) {
return "";
}
};
binding = new BundleBinding(null, null, index, index, null);
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
try {
binding.writeBundle(buffer, bundle);
} catch (Exception e) {
// ignore - error found
return false;
}
byte[] bytes = buffer.toByteArray();
NodePropBundle b2 = binding.readBundle(
new ByteArrayInputStream(bytes), bundle.getId());
if (!bundle.equals(b2)) {
// if debugging is needed:
// buffer = new ByteArrayOutputStream();
// binding.writeBundle(buffer, bundle);
// bytes = buffer.toByteArray();
// b2 = binding.readBundle(
// new ByteArrayInputStream(bytes), bundle.getId());
assertEquals(bundle.toString(), b2.toString());
}
return true;
}
private static PropertyEntry randomProperty(NodeId nodeId, Random r) {
PropertyEntry p = new PropertyEntry(
new PropertyId(nodeId, randomName(r)));
int type = PropertyType.STRING;
if (r.nextInt(10) == 0) {
type = r.nextInt() + 15;
}
p.setType(type);
p.setModCount((short) randomSize(r));
boolean multiValued = r.nextBoolean();
p.setMultiValued(multiValued);
int size;
if (multiValued && r.nextInt(10) > 0) {
size = 1;
} else {
size = randomSize(r);
}
InternalValue[] values = new InternalValue[size];
for (int i = 0; i < size; i++) {
values[i] = randomValue(r);
}
p.setValues(values);
return p;
}
private static InternalValue randomValue(Random r) {
if (r.nextInt(50) == 0) {
return null;
}
// TODO currently only string values
return InternalValue.create(randomString(r));
}
private static int randomSize(Random r) {
if (r.nextInt(20) == 0) {
return 0;
} else if (r.nextInt(20) == 0) {
return 1;
} else if (r.nextInt(20) == 0) {
return r.nextInt(10000);
}
return r.nextInt(5) + 1;
}
private static Set<Name> randomNameSet(Random r) {
if (r.nextInt(100) == 0) {
return null;
}
int size = randomSize(r);
HashSet<Name> set = new HashSet<Name>();
for(int i=0; i<size; i++) {
set.add(randomName(r));
}
return set;
}
private static Set<NodeId> randomNodeIdSet(Random r) {
if (r.nextInt(100) == 0) {
return null;
} else if (r.nextInt(10) == 0) {
return Collections.emptySet();
}
int size = randomSize(r);
HashSet<NodeId> set = new HashSet<NodeId>();
for(int i=0; i<size; i++) {
set.add(randomNodeId(r));
}
return set;
}
private static NodeId randomNodeId(Random r) {
if (r.nextInt(100) == 0) {
return null;
}
return new NodeId(r.nextLong(), r.nextLong());
}
private static Name randomName(Random r) {
if (r.nextInt(100) == 0) {
return null;
}
return factory.create(randomString(r), randomString(r));
}
private static String randomString(Random r) {
int size = randomSize(r);
StringBuilder buff = new StringBuilder();
for (int i=0; i<size; i++) {
buff.append("abcd".charAt(r.nextInt(4)));
}
return buff.toString();
}
}