org.apache.mahout.ga.watchmaker.cd.FileInfosDatasetTest.java Source code

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Here is the source code for org.apache.mahout.ga.watchmaker.cd.FileInfosDatasetTest.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file 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
 *
 * 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.
 */

package org.apache.mahout.ga.watchmaker.cd;

import junit.framework.Assert;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.mahout.common.FileLineIterable;
import org.apache.mahout.common.MahoutTestCase;

import com.google.common.io.Resources;

import java.io.IOException;
import java.io.File;

public class FileInfosDatasetTest extends MahoutTestCase {

    public void testRanges() throws IOException {
        FileSystem fs = FileSystem.get(new Configuration());
        Path inpath = fs.makeQualified(new Path(Resources.getResource("wdbc").toString()));

        DataSet dataset = FileInfoParser.parseFile(fs, inpath);
        DataSet.initialize(dataset);

        DataLine dl = new DataLine();
        for (String line : new FileLineIterable(new File(Resources.getResource("wdbc/wdbc.data").getPath()))) {
            dl.set(line);
            for (int index = 0; index < dataset.getNbAttributes(); index++) {
                if (dataset.isNumerical(index)) {
                    assertInRange(dl.getAttribute(index), dataset.getMin(index), dataset.getMax(index));
                } else {
                    assertInRange(dl.getAttribute(index), 0, dataset.getNbValues(index));
                }
            }
        }
    }

    private static void assertInRange(double value, double min, double max) {
        Assert.assertTrue("value" + value + ") < min", value >= min);
        Assert.assertTrue("value(" + value + ") > max", value <= max);
    }

}