/*
* 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 jakarta.el;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import org.junit.Assert;
import org.junit.Test;
public class TestExpressionFactoryCache {
private static class TestClassLoader extends ClassLoader {
}
@Test
public void testCacheWithOneClassLoader() {
ExpressionFactory factory;
ClassLoader cl = new TestClassLoader();
ExpressionFactoryCache cache = new ExpressionFactoryCache();
factory = cache.getOrCreateExpressionFactory(cl);
Assert.assertEquals(factory, cache.getOrCreateExpressionFactory(cl));
}
@Test
public void testCacheWithInserts() {
final int numClassLoaders = 15;
ClassLoader[] loaders = new ClassLoader[numClassLoaders];
ExpressionFactory[] factories = new ExpressionFactory[numClassLoaders];
ExpressionFactoryCache cache = new ExpressionFactoryCache();
for (int i = 0; i < numClassLoaders; i++) {
loaders[i] = new TestClassLoader();
factories[i] = cache.getOrCreateExpressionFactory(loaders[i]);
// make a second call, ensure the same instance comes back
Assert.assertEquals(factories[i], cache.getOrCreateExpressionFactory(loaders[i]));
}
// use a Set<> to verify each factory is unique
Set<ExpressionFactory> factorySet = new HashSet<>(Arrays.asList(factories));
Assert.assertEquals(numClassLoaders, factorySet.size());
}
}