Failing template render from STRawGroupDir and StringTemplate 4.0.5

gistfile1.java

package com.kemga.framework;

import static org.junit.Assert.assertEquals;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.junit.Test;
import org.stringtemplate.v4.ST;
import org.stringtemplate.v4.STGroup;
import org.stringtemplate.v4.STRawGroupDir;

public class TestTest {
	public static final String tmpdir = System.getProperty("java.io.tmpdir");
	/**
	 * This passes with ST-4.0.5
	 */
	@Test
	public void testTemplateFromMemory() {
		ST template = new ST("$values:{foo|[$foo$]}$", '$', '$');
		List<String> values = new ArrayList<String>();
		values.add("one");
		values.add("two");
		values.add("three");
		template.add("values", values);
		assertEquals("[one][two][three]", template.render());
	}
	/**
	 * This fails with exception ST-4.0.5:
	 * context [template] 1:1 no such template: /_sub1
	 * context [template] 1:8 passed 1 arg(s) to template null with 0 declared arg(s)
	 * context [template] 1:1 passed 1 arg(s) to template null with 0 declared arg(s)
	 * context [template] 1:1 passed 1 arg(s) to template null with 0 declared arg(s)
	 * context [template] 1:1 passed 1 arg(s) to template null with 0 declared arg(s)
	 */
	@Test public void testSTRawGroupDir() {
		String dir = getRandomDir();
		writeFile(dir, "template.st", "$values:{foo|[$foo$]}$");
		STGroup group = new STRawGroupDir(dir, '$', '$');
		ST template = group.getInstanceOf("template");
		List<String> values = new ArrayList<String>();
		values.add("one");
		values.add("two");
		values.add("three");
		template.add("values", values);
		assertEquals("[one][two][three]", template.render());			
	}
	
    public static String getRandomDir() {
        String randomDir = tmpdir+"dir"+String.valueOf((int)(Math.random()*100000));
        File f = new File(randomDir);
        f.mkdirs();
        return randomDir;
    }
    
	public static void writeFile(String dir, String fileName, String content) {
		try {
			File f = new File(dir, fileName);
            if ( !f.getParentFile().exists() ) f.getParentFile().mkdirs();
			FileWriter w = new FileWriter(f);
			BufferedWriter bw = new BufferedWriter(w);
			bw.write(content);
			bw.close();
			w.close();
		}
		catch (IOException ioe) {
			System.err.println("can't write file");
			ioe.printStackTrace(System.err);
		}
	}
}