/*
* 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.jasper.compiler;
import java.io.File;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import org.junit.Assert;
import org.junit.Test;
import org.apache.catalina.Context;
import org.apache.catalina.startup.Tomcat;
import org.apache.catalina.startup.TomcatBaseTest;
import org.apache.jasper.JspCompilationContext;
import org.apache.jasper.compiler.ELInterpreterFactory.DefaultELInterpreter;
public class TestELInterpreterFactory extends TomcatBaseTest {
public static class SimpleELInterpreter implements ELInterpreter {
@Override
public String interpreterCall(JspCompilationContext context,
boolean isTagFile, String expression, Class<?> expectedType,
String fnmapvar) {
return expression;
}
}
@Test
public void testBug54239() throws Exception {
Tomcat tomcat = getTomcatInstance();
File appDir = new File("test/webapp");
Context ctx = tomcat.addWebapp(null, "/test", appDir.getAbsolutePath());
tomcat.start();
ServletContext context = ctx.getServletContext();
ELInterpreter interpreter =
ELInterpreterFactory.getELInterpreter(context);
Assert.assertNotNull(interpreter);
Assert.assertTrue(interpreter instanceof DefaultELInterpreter);
context.removeAttribute(ELInterpreter.class.getName());
context.setAttribute(ELInterpreter.class.getName(),
SimpleELInterpreter.class.getName());
interpreter = ELInterpreterFactory.getELInterpreter(context);
Assert.assertNotNull(interpreter);
Assert.assertTrue(interpreter instanceof SimpleELInterpreter);
context.removeAttribute(ELInterpreter.class.getName());
SimpleELInterpreter simpleInterpreter = new SimpleELInterpreter();
context.setAttribute(ELInterpreter.class.getName(), simpleInterpreter);
interpreter = ELInterpreterFactory.getELInterpreter(context);
Assert.assertNotNull(interpreter);
Assert.assertTrue(interpreter instanceof SimpleELInterpreter);
Assert.assertTrue(interpreter == simpleInterpreter);
context.removeAttribute(ELInterpreter.class.getName());
ctx.stop();
ctx.addApplicationListener(Bug54239Listener.class.getName());
ctx.start();
interpreter = ELInterpreterFactory.getELInterpreter(ctx.getServletContext());
Assert.assertNotNull(interpreter);
Assert.assertTrue(interpreter instanceof SimpleELInterpreter);
}
public static class Bug54239Listener implements ServletContextListener {
@Override
public void contextInitialized(ServletContextEvent sce) {
sce.getServletContext().setInitParameter(ELInterpreter.class.getName(),
SimpleELInterpreter.class.getName());
}
@Override
public void contextDestroyed(ServletContextEvent sce) {
// NO-OP
}
}
}