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/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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 com.vaadin.data;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import org.junit.Assert;
import org.junit.Test;
import com.vaadin.data.provider.bov.Person;
import com.vaadin.tests.server.ClassesSerializableTest;
public class BeanPropertySetTest {
@Test
public void testSerializeDeserialize_propertySet() throws Exception {
PropertySet<Person> originalPropertySet = BeanPropertySet
.get(Person.class);
PropertySet<Person> deserializedPropertySet = ClassesSerializableTest
.serializeAndDeserialize(originalPropertySet);
Assert.assertSame(
"Deserialized instance should be the same as the original",
originalPropertySet, deserializedPropertySet);
}
@Test
public void testSerializeDeserialize_propertySet_cacheCleared()
throws Exception {
PropertySet<Person> originalPropertySet = BeanPropertySet
.get(Person.class);
ByteArrayOutputStream bs = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bs);
out.writeObject(originalPropertySet);
byte[] data = bs.toByteArray();
// Simulate deserializing into a different JVM by clearing the instance
// map
Field instancesField = BeanPropertySet.class
.getDeclaredField("instances");
instancesField.setAccessible(true);
Map<?, ?> instances = (Map<?, ?>) instancesField.get(null);
instances.clear();
ObjectInputStream in = new ObjectInputStream(
new ByteArrayInputStream(data));
PropertySet<Person> deserializedPropertySet = (PropertySet<Person>) in
.readObject();
Assert.assertSame(
"Deserialized instance should be the same as in the cache",
BeanPropertySet.get(Person.class), deserializedPropertySet);
Assert.assertNotSame(
"Deserialized instance should not be the same as the original",
originalPropertySet, deserializedPropertySet);
}
@Test
public void testSerializeDeserialize_propertyDefinition() throws Exception {
PropertyDefinition<Person, ?> definition = BeanPropertySet
.get(Person.class).getProperty("born")
.orElseThrow(RuntimeException::new);
PropertyDefinition<Person, ?> deserializedDefinition = ClassesSerializableTest
.serializeAndDeserialize(definition);
ValueProvider<Person, ?> getter = deserializedDefinition.getGetter();
Person person = new Person("Milennial", 2000);
Integer age = (Integer) getter.apply(person);
Assert.assertEquals("Deserialized definition should be functional",
Integer.valueOf(2000), age);
Assert.assertSame(
"Deserialized instance should be the same as in the cache",
BeanPropertySet.get(Person.class).getProperty("born")
.orElseThrow(RuntimeException::new),
deserializedDefinition);
}
@Test
public void properties() {
PropertySet<Person> propertySet = BeanPropertySet.get(Person.class);
Set<String> propertyNames = propertySet.getProperties()
.map(PropertyDefinition::getName).collect(Collectors.toSet());
Assert.assertEquals(new HashSet<>(Arrays.asList("name", "born")),
propertyNames);
}
}
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