code: package xyz.lejon.utils;
  
  import static org.junit.Assert.*;
  
  import java.io.FileNotFoundException;
  
  import org.junit.Test;
  
  import cc.mallet.util.LDAUtils;
  import cc.mallet.types.InstanceList;
  import cc.mallet.util.Randoms;
  
  public class AlphabetTesting {
  
  	@Test
  	public void test() throws FileNotFoundException {
  		int TRAINING = 0;
  		int TESTING = 1;
  
  		// Load textdata
  		InstanceList instances = LDAUtils.loadInstances("src/test/resources/datasets/small.lda", null, 1);
  		InstanceList[] instanceLists =
  				instances.split(new Randoms(),
  						new double[] {0.9, 0.1, 0.0});
  		
  		//System.out.println(instanceLists[TESTING].getAlphabet());
  		//System.out.println(instanceLists[TRAINING].getAlphabet());
  		
  		assertEquals(instanceLists[TRAINING].getAlphabet(),instanceLists[TESTING].getAlphabet());
  	}
  
  }
  