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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 org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.runtime.RuntimeConstants;
import java.util.Collections;
/**
* Used to check that empty values are properly handled in #if statements
*/
public class IfEmptyNoEmptyCheckTestCase extends BaseTestCase
{
public IfEmptyNoEmptyCheckTestCase(final String name)
{
super(name);
}
@Override
protected void setUpEngine(VelocityEngine engine)
{
engine.setProperty(RuntimeConstants.CHECK_EMPTY_OBJECTS, "false");
}
protected void assertEmpty(Object obj)
{
context.put("obj", obj);
assertEvalEquals("", "#if( $obj )fail#end");
}
protected void assertNotEmpty(Object obj)
{
context.put("obj", obj);
assertEvalEquals("", "#if( !$obj )fail#end");
}
public void testNull()
{
assertEmpty(null);
assertNotEmpty(new NullAsString());
assertNotEmpty(new NullAsNumber());
}
public void testDataStructures()
{
assertNotEmpty(Collections.emptyMap());
assertNotEmpty(Collections.emptyList());
assertNotEmpty(new Object[]{});
}
public void testString()
{
assertNotEmpty("");
assertNotEmpty(new EmptyAsString());
}
public void testNumber()
{
assertNotEmpty(0);
}
public void testStringBuilder()
{
StringBuilder builder = new StringBuilder();
assertNotEmpty(builder);
}
public void testLiterals()
{
assertEvalEquals("", "#if( !0 )fail#end");
assertEvalEquals("", "#if( !0.0 )fail#end");
assertEvalEquals("", "#if( !'' )fail#end");
assertEvalEquals("", "#if( !\"\" )fail#end");
assertEvalEquals("", "#if( ![] )fail#end");
assertEvalEquals("", "#if( !{} )fail#end");
}
public static class NullAsString
{
public String getAsString()
{
return null;
}
}
public static class EmptyAsString
{
public String getAsString()
{
return "";
}
}
public static class NullAsNumber
{
public String getAsNumber()
{
return null;
}
}
}
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