/* Copyright (C) 2003 Univ. of Massachusetts Amherst, Computer Science Dept.
This file is part of "MALLET" (MAchine Learning for LanguagE Toolkit).
http://www.cs.umass.edu/~mccallum/mallet
This software is provided under the terms of the Common Public License,
version 1.0, as published by http://www.opensource.org. For further
information, see the file `LICENSE' included with this distribution. */
package cc.mallet.pipe.tests;
import cc.mallet.fst.SimpleTagger;
import cc.mallet.pipe.Pipe;
import cc.mallet.pipe.PipeUtils;
import cc.mallet.pipe.SerialPipes;
import cc.mallet.pipe.SimpleTaggerSentence2TokenSequence;
import cc.mallet.types.Alphabet;
import cc.mallet.types.Instance;
import junit.framework.*;
/**
* Created: Aug 28, 2005
*
* @author <A HREF="mailto:casutton@cs.umass.edu>casutton@cs.umass.edu</A>
* @version $Id: TestPipeUtils.java,v 1.1 2007/10/22 21:37:40 mccallum Exp $
*/
public class TestPipeUtils extends TestCase {
public TestPipeUtils (String name)
{
super (name);
}
private static class StupidPipe extends Pipe {
public Instance pipe (Instance carrier)
{
System.out.println ("StupidPipe says hi.");
return carrier;
}
}
private static String data = "f1 f2 CL1\nf1 f3 CL2";
public void testPipesAreStupid ()
{
Pipe p1 = new StupidPipe ();
Pipe p2 = new SimpleTaggerSentence2TokenSequence ();
// initialize p2's dict
p2.instanceFrom(new Instance (data, null, null, null));
Pipe serial = new SerialPipes (new Pipe[] { p1, p2 });
try {
serial.getDataAlphabet ();
assertTrue ("Test failed: Should have generated exception.", false);
} catch (IllegalStateException e) {}
}
public void testConcatenatePipes ()
{
Pipe p1 = new StupidPipe ();
Pipe p2 = new SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence ();
// initialize p2's dict
p2.instanceFrom(new Instance (data, null, null, null));
assertEquals (3, p2.getDataAlphabet ().size());
Pipe serial = PipeUtils.concatenatePipes (p1, p2);
Alphabet dict = serial.getDataAlphabet ();
assertEquals (3, dict.size ());
assertTrue (dict == p2.getDataAlphabet ());
}
public void testConcatenateNullPipes ()
{
Pipe p1 = new StupidPipe ();
Pipe p2 = new SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence ();
Pipe serial = PipeUtils.concatenatePipes (p1, p2);
p2.instanceFrom(new Instance (data, null, null, null));
assertEquals (3, serial.getDataAlphabet ().size ());
}
public void testConcatenateBadPipes ()
{
Pipe p1 = new SimpleTaggerSentence2TokenSequence ();
// force resolving data alphabet
Alphabet dict1 = p1.getDataAlphabet ();
Pipe p2 = new SimpleTaggerSentence2TokenSequence ();
// force resolving data alphabet
Alphabet dict2 = p2.getDataAlphabet ();
assertTrue (dict1 != dict2);
try {
PipeUtils.concatenatePipes (p1, p2);
assertTrue ("Test failed: concatenatePipes() allowed putting together incompatible alphabets.", false);
} catch (IllegalArgumentException e) {
// Exception expected
}
}
public static Test suite ()
{
return new TestSuite (TestPipeUtils.class);
}
public static void main (String[] args) throws Throwable
{
TestSuite theSuite;
if (args.length > 0) {
theSuite = new TestSuite ();
for (int i = 0; i < args.length; i++) {
theSuite.addTest (new TestPipeUtils (args[i]));
}
} else {
theSuite = (TestSuite) suite ();
}
junit.textui.TestRunner.run (theSuite);
}
}