Package org.eobjects.datacleaner.regexparser

Source Code of org.eobjects.datacleaner.regexparser.RegexParserTransformerTest

/**
* eobjects.org DataCleaner
* Copyright (C) 2010 eobjects.org
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA  02110-1301  USA
*/
package org.eobjects.datacleaner.regexparser;

import static org.junit.Assert.assertArrayEquals;

import java.util.regex.Pattern;

import junit.framework.TestCase;

import org.eobjects.analyzer.beans.api.OutputColumns;
import org.eobjects.analyzer.data.MockInputColumn;
import org.eobjects.analyzer.data.MockInputRow;

public class RegexParserTransformerTest extends TestCase {

  public void testTransform() throws Exception {
    MockInputColumn<String> col = new MockInputColumn<String>("foobar", String.class);

    RegexParserTransformer t = new RegexParserTransformer();
    t.column = col;
    t.pattern = Pattern.compile("(a+)(b+)|(c+)");
   
    OutputColumns outputColumns = t.getOutputColumns();
    assertEquals(4, outputColumns.getColumnCount());
    assertEquals("foobar (matched part)", outputColumns.getColumnName(0));
    assertEquals("foobar (group 1)", outputColumns.getColumnName(1));
    assertEquals("foobar (group 2)", outputColumns.getColumnName(2));
    assertEquals("foobar (group 3)", outputColumns.getColumnName(3));

    assertArrayEquals(new String[] { "aabb", "aa", "bb", null }, t.transform(new MockInputRow().put(col, "aabb")));
    assertArrayEquals(new String[] { "cccc", null, null, "cccc" }, t.transform(new MockInputRow().put(col, "cccc")));
    assertArrayEquals(new String[] { null, null, null, null }, t.transform(new MockInputRow().put(col, "dddd")));
  }
}
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