/*
* Encog(tm) Core Unit Tests v3.0 - Java Version
* http://www.heatonresearch.com/encog/
* http://code.google.com/p/encog-java/
* Copyright 2008-2011 Heaton Research, Inc.
*
* Licensed 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.
*
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*/
package org.encog.app.quant;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import junit.framework.Assert;
import junit.framework.TestCase;
import org.encog.app.analyst.csv.segregate.SegregateCSV;
import org.encog.app.analyst.csv.segregate.SegregateTargetPercent;
import org.encog.util.csv.CSVFormat;
public class TestSegregateCSV extends TestCase {
public static final File INPUT_NAME = new File("test.csv");
public static final File OUTPUT1_NAME = new File("test2.csv");
public static final File OUTPUT2_NAME = new File("test3.csv");
public void generateTestFileHeadings(boolean header) throws IOException
{
PrintWriter tw = new PrintWriter(new FileWriter(INPUT_NAME));
if (header)
{
tw.println("a,b");
}
tw.println("one,1");
tw.println("two,2");
tw.println("three,3");
tw.println("four,4");
// close the stream
tw.close();
}
public void testFilterCSVHeaders() throws IOException
{
generateTestFileHeadings(true);
SegregateCSV norm = new SegregateCSV();
norm.getTargets().add(new SegregateTargetPercent(OUTPUT1_NAME, 75));
norm.getTargets().add(new SegregateTargetPercent(OUTPUT2_NAME, 25));
norm.analyze(INPUT_NAME, true, CSVFormat.ENGLISH);
norm.process();
BufferedReader tr = new BufferedReader(new FileReader(OUTPUT1_NAME));
Assert.assertEquals("\"a\",\"b\"",tr.readLine());
Assert.assertEquals("one,1",tr.readLine());
Assert.assertEquals("two,2",tr.readLine());
Assert.assertEquals("three,3", tr.readLine());
Assert.assertNull(tr.readLine());
tr.close();
tr = new BufferedReader(new FileReader(OUTPUT2_NAME));
Assert.assertEquals("\"a\",\"b\"", tr.readLine());
Assert.assertEquals("four,4", tr.readLine());
Assert.assertNull(tr.readLine());
tr.close();
INPUT_NAME.delete();
OUTPUT1_NAME.delete();
OUTPUT2_NAME.delete();
}
public void testFilterCSVNoHeaders() throws IOException
{
generateTestFileHeadings(false);
SegregateCSV norm = new SegregateCSV();
norm.getTargets().add(new SegregateTargetPercent(OUTPUT1_NAME, 75));
norm.getTargets().add(new SegregateTargetPercent(OUTPUT2_NAME, 25));
norm.analyze(INPUT_NAME, false, CSVFormat.ENGLISH);
norm.setProduceOutputHeaders(false);
norm.process();
BufferedReader tr = new BufferedReader(new FileReader(OUTPUT1_NAME));
Assert.assertEquals("one,1", tr.readLine());
Assert.assertEquals("two,2", tr.readLine());
Assert.assertEquals("three,3", tr.readLine());
Assert.assertNull(tr.readLine());
tr.close();
tr = new BufferedReader(new FileReader(OUTPUT2_NAME));
Assert.assertEquals("four,4", tr.readLine());
Assert.assertNull(tr.readLine());
tr.close();
INPUT_NAME.delete();
OUTPUT1_NAME.delete();
OUTPUT2_NAME.delete();
}
}