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 *  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
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package org.apache.cayenne.gen;

import org.apache.velocity.Template;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.context.Context;
import org.apache.velocity.runtime.RuntimeConstants;
import org.apache.velocity.runtime.log.NullLogChute;
import org.junit.Before;

import java.io.StringWriter;
import java.util.Properties;

public class ClassGenerationCase {

    private VelocityEngine velocityEngine;

    @Before
    public void setUp() throws Exception {
        Properties props = new Properties();

        // null logger that will prevent velocity.log from being generated
        props.put(RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS, NullLogChute.class.getName());
        props.put("resource.loader", "cayenne");
        props.put("cayenne.resource.loader.class", ClassGeneratorResourceLoader.class.getName());
        props.put("cayenne.resource.loader.cache", "false");

        this.velocityEngine = new VelocityEngine();
        this.velocityEngine.init(props);
    }

    protected String renderTemplate(String templateName, Context context) throws Exception {
        StringWriter writer = new StringWriter();

        Template template = velocityEngine.getTemplate(templateName);
        template.merge(context, writer);

        return writer.toString();
    }

}