package org.apache.velocity.test;
/*
* 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.
*/
import junit.framework.TestCase;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.context.EvaluateContext;
import org.apache.velocity.context.InternalContextAdapterImpl;
import org.apache.velocity.runtime.RuntimeConstants;
import org.apache.velocity.runtime.RuntimeInstance;
import org.apache.velocity.test.misc.TestContext;
/**
* Tests scope of EvaluateContext.
*
* @author <a href="mailto:wglass@forio.com">Will Glass-Husain</a>
* @version $Id: EvaluateContextTestCase.java 753027 2009-03-12 21:47:56Z nbubna $
*/
public class EvaluateContextTestCase extends TestCase
{
public void testLocalscopePutDoesntLeakButGetDoes()
throws Exception
{
RuntimeInstance instance;
instance = new RuntimeInstance();
instance.setProperty(RuntimeConstants.EVALUATE_CONTEXT_CLASS, VelocityContext.class.getName());
instance.init();
VelocityContext base = new VelocityContext();
base.put("outsideVar", "value1");
EvaluateContext evc = new EvaluateContext(new InternalContextAdapterImpl(base), instance);
evc.put("newLocalVar", "value2");
// New variable put doesn't leak
assertNull(base.get("newLocalVar"));
assertEquals("value2", evc.get("newLocalVar"));
// But we can still get to "outsideVar"
assertEquals("value1", evc.get("outsideVar"));
// If we decide to try and set outsideVar it won't leak
evc.put("outsideVar", "value3");
assertEquals("value3", evc.get("outsideVar"));
assertEquals("value1", base.get("outsideVar"));
assertEquals(2, evc.getKeys().length);
}
/**
* Test that local context can be configured.
* @throws Exception
*/
public void testSetLocalContext()
throws Exception
{
RuntimeInstance instance = new RuntimeInstance();
instance.setProperty(RuntimeConstants.EVALUATE_CONTEXT_CLASS, TestContext.class.getName());
instance.init();
VelocityContext base = new VelocityContext();
base.put("outsideVar", "value1");
EvaluateContext evc = new EvaluateContext(new InternalContextAdapterImpl(base), instance);
// original entry
assertEquals(1,evc.getKeys().length);
// original plus local entry
evc.put("test","result");
assertEquals(2,evc.getKeys().length);
// local context is case insensitive, so the count remains the same
evc.put("TEST","result");
assertEquals(2,evc.getKeys().length);
assertEquals("result",evc.get("test"));
assertEquals("result",evc.get("TEst"));
assertNull(evc.get("OUTSIDEVAR"));
}
public void testSetLocalContextWithErrors()
throws Exception
{
VelocityContext base = new VelocityContext();
try
{
// initialize with bad class name
RuntimeInstance instance = new RuntimeInstance();
instance.setProperty(RuntimeConstants.EVALUATE_CONTEXT_CLASS, "org.apache");
instance.init();
EvaluateContext evc = new EvaluateContext(new InternalContextAdapterImpl(base), instance);
fail ("Expected an exception");
}
catch (Exception e) {}
try
{
// initialize with class not implementing Context
RuntimeInstance instance = new RuntimeInstance();
instance.setProperty(RuntimeConstants.EVALUATE_CONTEXT_CLASS, org.apache.velocity.test.EvaluateContextTestCase.class.getName());
instance.init();
EvaluateContext evc = new EvaluateContext(new InternalContextAdapterImpl(base), instance);
fail ("Expected an exception");
}
catch (Exception e) {}
}
}