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 java.io.StringWriter;
import java.util.Map;
import java.util.HashMap;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.exception.ParseErrorException;
/**
* More specific parser tests where just templating
* isn't enough.
*
* @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
* @version $Id: ParserTestCase.java 463298 2006-10-12 16:10:32Z henning $
*/
public class ParserTestCase extends TestCase
{
public ParserTestCase(String testName)
{
super(testName);
}
public static Test suite()
{
return new TestSuite(ParserTestCase.class);
}
/**
* Test to make sure that using '=' in #if() throws a PEE
*/
public void testEquals()
throws Exception
{
VelocityEngine ve = new VelocityEngine();
ve.init();
/*
* this should parse fine -> uses ==
*/
String template = "#if($a == $b) foo #end";
ve.evaluate(new VelocityContext(), new StringWriter(), "foo", template);
/*
* this should throw an exception
*/
template = "#if($a = $b) foo #end";
try
{
ve.evaluate(new VelocityContext(), new StringWriter(), "foo", template);
fail("Could evaluate template with errors!");
}
catch(ParseErrorException pe)
{
// Do nothing
}
}
/**
* Test to see if we force the first arg to #macro() to be a word
*/
public void testMacro()
throws Exception
{
VelocityEngine ve = new VelocityEngine();
ve.init();
/*
* this should work
*/
String template = "#macro(foo) foo #end";
ve.evaluate(new VelocityContext(), new StringWriter(), "foo", template);
/*
* this should throw an exception
*/
template = "#macro($x) foo #end";
try
{
ve.evaluate(new VelocityContext(), new StringWriter(), "foo", template);
fail("Could evaluate macro with errors!");
}
catch(ParseErrorException pe)
{
// Do nothing
}
}
/**
* Test to see if don't tolerage passing word tokens in anything but the
* 0th arg to #macro() and the 1th arg to foreach()
*/
public void testArgs()
throws Exception
{
VelocityEngine ve = new VelocityEngine();
ve.init();
/*
* this should work
*/
String template = "#macro(foo) foo #end";
ve.evaluate(new VelocityContext(), new StringWriter(), "foo", template);
/*
* this should work - spaces intentional
*/
template = "#foreach( $i in $woogie ) end #end";
ve.evaluate(new VelocityContext(), new StringWriter(), "foo", template);
/*
* this should bomb
*/
template = "#macro( foo $a) $a #end #foo(woogie)";
try
{
ve.evaluate(new VelocityContext(), new StringWriter(), "foo", template);
fail("Evaluation of macro with errors succeeded!");
}
catch(ParseErrorException pe)
{
// Do nothing
}
}
/**
* Test to see if we toString is called multiple times on references.
*/
public void testASTReferenceToStringOnlyCalledOnce()
throws Exception
{
VelocityEngine ve = new VelocityEngine();
ve.init();
String template = "$counter";
ToStringCounter counter = new ToStringCounter();
Map m = new HashMap();
m.put("counter", counter);
ve.evaluate(new VelocityContext(m), new StringWriter(), "foo", template);
assertEquals(1, counter.timesCalled);
}
public static class ToStringCounter {
public int timesCalled = 0;
public String toString() {
this.timesCalled++;
return "foo";
}
}
}