/*
* Copyright 2002-2014 the original author or authors.
*
* 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 org.springframework.beans;
import java.beans.BeanInfo;
import java.beans.PropertyDescriptor;
import java.util.ArrayList;
import org.junit.Test;
import org.springframework.core.OverridingClassLoader;
import org.springframework.tests.sample.beans.TestBean;
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
/**
* @author Juergen Hoeller
* @author Chris Beams
* @author Arjen Poutsma
*/
public class CachedIntrospectionResultsTests {
@Test
public void acceptAndClearClassLoader() throws Exception {
BeanWrapper bw = new BeanWrapperImpl(TestBean.class);
assertTrue(bw.isWritableProperty("name"));
assertTrue(bw.isWritableProperty("age"));
assertTrue(CachedIntrospectionResults.strongClassCache.containsKey(TestBean.class));
ClassLoader child = new OverridingClassLoader(getClass().getClassLoader());
Class<?> tbClass = child.loadClass("org.springframework.tests.sample.beans.TestBean");
assertFalse(CachedIntrospectionResults.strongClassCache.containsKey(tbClass));
CachedIntrospectionResults.acceptClassLoader(child);
bw = new BeanWrapperImpl(tbClass);
assertTrue(bw.isWritableProperty("name"));
assertTrue(bw.isWritableProperty("age"));
assertTrue(CachedIntrospectionResults.strongClassCache.containsKey(tbClass));
CachedIntrospectionResults.clearClassLoader(child);
assertFalse(CachedIntrospectionResults.strongClassCache.containsKey(tbClass));
assertTrue(CachedIntrospectionResults.strongClassCache.containsKey(TestBean.class));
}
@Test
public void clearClassLoaderForSystemClassLoader() throws Exception {
BeanUtils.getPropertyDescriptors(ArrayList.class);
assertTrue(CachedIntrospectionResults.strongClassCache.containsKey(ArrayList.class));
CachedIntrospectionResults.clearClassLoader(ArrayList.class.getClassLoader());
assertFalse(CachedIntrospectionResults.strongClassCache.containsKey(ArrayList.class));
}
@Test
public void shouldUseExtendedBeanInfoWhenApplicable() throws NoSuchMethodException, SecurityException {
// given a class with a non-void returning setter method
@SuppressWarnings("unused")
class C {
public Object setFoo(String s) { return this; }
public String getFoo() { return null; }
}
// CachedIntrospectionResults should delegate to ExtendedBeanInfo
CachedIntrospectionResults results = CachedIntrospectionResults.forClass(C.class);
BeanInfo info = results.getBeanInfo();
PropertyDescriptor pd = null;
for (PropertyDescriptor candidate : info.getPropertyDescriptors()) {
if (candidate.getName().equals("foo")) {
pd = candidate;
}
}
// resulting in a property descriptor including the non-standard setFoo method
assertThat(pd, notNullValue());
assertThat(pd.getReadMethod(), equalTo(C.class.getMethod("getFoo")));
assertThat(
"No write method found for non-void returning 'setFoo' method. " +
"Check to see if CachedIntrospectionResults is delegating to " +
"ExtendedBeanInfo as expected",
pd.getWriteMethod(), equalTo(C.class.getMethod("setFoo", String.class)));
}
}