package org.biojava.bio.search;

import junit.framework.TestCase;

import org.biojava.bio.seq.DNATools;
import org.biojava.bio.symbol.IllegalAlphabetException;
import org.biojava.bio.symbol.IllegalSymbolException;
import org.biojava.bio.symbol.SymbolList;

/**
 * Test the MaxMismatchPattern and MaxMismatchMatcher classes.
 *
 * @author Matthew Pocock
 * @since 1.4
 */
public class MaxMismatchPatternTest
extends TestCase {
  public void testTooShort()
  throws IllegalSymbolException, IllegalAlphabetException{
    SymbolList zero = DNATools.createDNA("");
    SymbolList one = DNATools.createDNA("a");
    SymbolList agct = DNATools.createDNA("agct");
    SymbolList aggt = DNATools.createDNA("aggt");

    MaxMismatchPattern mmp = new MaxMismatchPattern(agct, 0);
    assertFalse("Zero length string has no matches", mmp.matcher(zero).find());
    assertFalse("One length string has no matches", mmp.matcher(one).find());
    assertTrue("Four length identical string has a match", mmp.matcher(agct).find());
    assertFalse("Four length non-identical string has no match", mmp.matcher(aggt).find());
  }
}