/*
* FindBugs - Find Bugs in Java programs
* Copyright (C) 2003-2008 University of Maryland
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.umd.cs.findbugs.gui2;
import static java.util.Arrays.asList;
import static junit.framework.Assert.*;
import org.junit.Test;
import edu.umd.cs.findbugs.BugInstance;
import edu.umd.cs.findbugs.filter.Matcher;
import edu.umd.cs.findbugs.filter.NotMatcher;
/**
* @author Graham Allan (grundlefleck@gmail.com)
*/
public class FilterFactoryTest {
@Test
public void invertMatcherShouldNegateTheOriginalMatchingResult() {
BugInstance bug = new BugInstance("UUF_UNUSED_FIELD", 0);
Matcher originalMatcher = FilterFactory.makeMatcher(asList(Sortables.BUGCODE), bug);
assertTrue("Original matcher should match bug.", originalMatcher.match(bug));
Matcher notMatcher = FilterFactory.invertMatcher(originalMatcher);
assertTrue("Should return an instance of NotMatcher.", notMatcher instanceof NotMatcher);
assertFalse("Inverted matcher should now not match.", notMatcher.match(bug));
}
@Test
public void shouldReturnTheOriginalMatcherWhenAskedToInvertANotMatcher() {
BugInstance bug = new BugInstance("UUF_UNUSED_FIELD", 0);
Matcher originalMatcher = FilterFactory.makeMatcher(asList(Sortables.BUGCODE), bug);
Matcher notMatcher = FilterFactory.invertMatcher(originalMatcher);
Matcher notNotMatcher = FilterFactory.invertMatcher(notMatcher);
assertSame("Should return the originally wrapped matcher.", originalMatcher, notNotMatcher);
assertTrue("Original matcher should now not match.", notNotMatcher.match(bug));
}
}