/*
 * 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 freemarker.template.utility;

import java.io.IOException;

import org.junit.Test;

import freemarker.template.TemplateException;
import freemarker.test.TemplateTest;

public final class ConstantsTest extends TemplateTest {
    
    @Test
    public void testEmptyHash() throws IOException, TemplateException {
        addToDataModel("h", Constants.EMPTY_HASH);
        assertOutput("{<#list h as k ,v>x</#list>}", "{}"); 
        assertOutput("{<#list h?keys as k>x</#list>}", "{}"); 
        assertOutput("{<#list h?values as k>x</#list>}", "{}"); 
        assertOutput("${h?size}", "0"); 
    }
    
}